Stefan Hajnoczi [Thu, 30 Apr 2020 14:04:42 +0000 (15:04 +0100)]
virtio-blk: handle block_device_operations callbacks after hot unplug
A userspace process holding a file descriptor to a virtio_blk device can
still invoke block_device_operations after hot unplug. This leads to a
use-after-free accessing vblk->vdev in virtblk_getgeo() when
ioctl(HDIO_GETGEO) is invoked:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000090
IP: [<
ffffffffc00e5450>] virtio_check_driver_offered_feature+0x10/0x90 [virtio]
PGD
800000003a92f067 PUD
3a930067 PMD 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 1310 Comm: hdio-getgeo Tainted: G OE ------------ 3.10.0-1062.el7.x86_64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
task:
ffff9be5fbfb8000 ti:
ffff9be5fa890000 task.ti:
ffff9be5fa890000
RIP: 0010:[<
ffffffffc00e5450>] [<
ffffffffc00e5450>] virtio_check_driver_offered_feature+0x10/0x90 [virtio]
RSP: 0018:
ffff9be5fa893dc8 EFLAGS:
00010246
RAX:
ffff9be5fc3f3400 RBX:
ffff9be5fa893e30 RCX:
0000000000000000
RDX:
0000000000000000 RSI:
0000000000000004 RDI:
ffff9be5fbc10b40
RBP:
ffff9be5fa893dc8 R08:
0000000000000301 R09:
0000000000000301
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff9be5fdc24680
R13:
ffff9be5fbc10b40 R14:
ffff9be5fbc10480 R15:
0000000000000000
FS:
00007f1bfb968740(0000) GS:
ffff9be5ffc00000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000090 CR3:
000000003a894000 CR4:
0000000000360ff0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
[<
ffffffffc016ac37>] virtblk_getgeo+0x47/0x110 [virtio_blk]
[<
ffffffff8d3f200d>] ? handle_mm_fault+0x39d/0x9b0
[<
ffffffff8d561265>] blkdev_ioctl+0x1f5/0xa20
[<
ffffffff8d488771>] block_ioctl+0x41/0x50
[<
ffffffff8d45d9e0>] do_vfs_ioctl+0x3a0/0x5a0
[<
ffffffff8d45dc81>] SyS_ioctl+0xa1/0xc0
A related problem is that virtblk_remove() leaks the vd_index_ida index
when something still holds a reference to vblk->disk during hot unplug.
This causes virtio-blk device names to be lost (vda, vdb, etc).
Fix these issues by protecting vblk->vdev with a mutex and reference
counting vblk so the vd_index_ida index can be removed in all cases.
Fixes: 48e4043d4529 ("virtio: add virtio disk geometry feature")
Reported-by: Lance Digby <ldigby@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Link: https://lore.kernel.org/r/20200430140442.171016-1-stefanha@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Linus Torvalds [Sat, 2 May 2020 00:19:15 +0000 (17:19 -0700)]
Merge tag 'vfio-v5.7-rc4' of git://github.com/awilliam/linux-vfio
Pull VFIO fixes from Alex Williamson:
- copy_*_user validity check for new vfio_dma_rw interface (Yan Zhao)
- Fix a potential math overflow (Yan Zhao)
- Use follow_pfn() for calculating PFNMAPs (Sean Christopherson)
* tag 'vfio-v5.7-rc4' of git://github.com/awilliam/linux-vfio:
vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn()
vfio: avoid possible overflow in vfio_iommu_type1_pin_pages
vfio: checking of validity of user vaddr in vfio_dma_rw
Linus Torvalds [Sat, 2 May 2020 00:09:31 +0000 (17:09 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Catalin Marinas:
"Add -fasynchronous-unwind-tables to the vDSO CFLAGS"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: vdso: Add -fasynchronous-unwind-tables to cflags
Linus Torvalds [Sat, 2 May 2020 00:03:06 +0000 (17:03 -0700)]
Merge tag 'io_uring-5.7-2020-05-01' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- Fix for statx not grabbing the file table, making AT_EMPTY_PATH fail
- Cover a few cases where async poll can handle retry, eliminating the
need for an async thread
- fallback request busy/free fix (Bijan)
- syzbot reported SQPOLL thread exit fix for non-preempt (Xiaoguang)
- Fix extra put of req for sync_file_range (Pavel)
- Always punt splice async. We'll improve this for 5.8, but wanted to
eliminate the inode mutex lock from the non-blocking path for 5.7
(Pavel)
* tag 'io_uring-5.7-2020-05-01' of git://git.kernel.dk/linux-block:
io_uring: punt splice async because of inode mutex
io_uring: check non-sync defer_list carefully
io_uring: fix extra put in sync_file_range()
io_uring: use cond_resched() in io_ring_ctx_wait_and_kill()
io_uring: use proper references for fallback_req locking
io_uring: only force async punt if poll based retry can't handle it
io_uring: enable poll retry for any file with ->read_iter / ->write_iter
io_uring: statx must grab the file table for valid fd
Arnd Bergmann [Thu, 30 Apr 2020 21:30:49 +0000 (23:30 +0200)]
drop_monitor: work around gcc-10 stringop-overflow warning
The current gcc-10 snapshot produces a false-positive warning:
net/core/drop_monitor.c: In function 'trace_drop_common.constprop':
cc1: error: writing 8 bytes into a region of size 0 [-Werror=stringop-overflow=]
In file included from net/core/drop_monitor.c:23:
include/uapi/linux/net_dropmon.h:36:8: note: at offset 0 to object 'entries' with size 4 declared here
36 | __u32 entries;
| ^~~~~~~
I reported this in the gcc bugzilla, but in case it does not get
fixed in the release, work around it by using a temporary variable.
Fixes: 9a8afc8d3962 ("Network Drop Monitor: Adding drop monitor implementation & Netlink protocol")
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94881
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yoshiyuki Kurauchi [Thu, 30 Apr 2020 05:01:36 +0000 (14:01 +0900)]
gtp: set NLM_F_MULTI flag in gtp_genl_dump_pdp()
In drivers/net/gtp.c, gtp_genl_dump_pdp() should set NLM_F_MULTI
flag since it returns multipart message.
This patch adds a new arg "flags" in gtp_genl_fill_info() so that
flags can be set by the callers.
Signed-off-by: Yoshiyuki Kurauchi <ahochauwaaaaa@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jules Irenge [Wed, 29 Apr 2020 22:57:22 +0000 (23:57 +0100)]
cxgb4: Add missing annotation for service_ofldq()
Sparse reports a warning at service_ofldq()
warning: context imbalance in service_ofldq() - unexpected unlock
The root cause is the missing annotation at service_ofldq()
Add the missing __must_hold(&q->sendq.lock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jacob Keller [Wed, 29 Apr 2020 20:59:50 +0000 (13:59 -0700)]
ice: cleanup language in ice.rst for fw.app
The documentation for the ice driver around "fw.app" has a spelling
mistake in variation. Additionally, the language of "shall have a unique
name" sounds like a requirement. Reword this to read more like
a description or property.
Reported-by: Benjamin Fisher <benjamin.l.fisher@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clay McClure [Wed, 29 Apr 2020 07:59:00 +0000 (00:59 -0700)]
net: Make PTP-specific drivers depend on PTP_1588_CLOCK
Commit
d1cbfd771ce8 ("ptp_clock: Allow for it to be optional") changed
all PTP-capable Ethernet drivers from `select PTP_1588_CLOCK` to `imply
PTP_1588_CLOCK`, "in order to break the hard dependency between the PTP
clock subsystem and ethernet drivers capable of being clock providers."
As a result it is possible to build PTP-capable Ethernet drivers without
the PTP subsystem by deselecting PTP_1588_CLOCK. Drivers are required to
handle the missing dependency gracefully.
Some PTP-capable Ethernet drivers (e.g., TI_CPSW) factor their PTP code
out into separate drivers (e.g., TI_CPTS_MOD). The above commit also
changed these PTP-specific drivers to `imply PTP_1588_CLOCK`, making it
possible to build them without the PTP subsystem. But as Grygorii
Strashko noted in [1]:
On Wed, Apr 22, 2020 at 02:16:11PM +0300, Grygorii Strashko wrote:
> Another question is that CPTS completely nonfunctional in this case and
> it was never expected that somebody will even try to use/run such
> configuration (except for random build purposes).
In my view, enabling a PTP-specific driver without the PTP subsystem is
a configuration error made possible by the above commit. Kconfig should
not allow users to create a configuration with missing dependencies that
results in "completely nonfunctional" drivers.
I audited all network drivers that call ptp_clock_register() but merely
`imply PTP_1588_CLOCK` and found five PTP-specific drivers that are
likely nonfunctional without PTP_1588_CLOCK:
NET_DSA_MV88E6XXX_PTP
NET_DSA_SJA1105_PTP
MACB_USE_HWSTAMP
CAVIUM_PTP
TI_CPTS_MOD
Note how these symbols all reference PTP or timestamping in their name;
this is a clue that they depend on PTP_1588_CLOCK.
Change them from `imply PTP_1588_CLOCK` [2] to `depends on PTP_1588_CLOCK`.
I'm not using `select PTP_1588_CLOCK` here because PTP_1588_CLOCK has
its own dependencies, which `select` would not transitively apply.
Additionally, remove the `select NET_PTP_CLASSIFY` from CPTS_TI_MOD;
PTP_1588_CLOCK already selects that.
[1]: https://lore.kernel.org/lkml/
c04458ed-29ee-1797-3a11-
7f3f560553e6@ti.com/
[2]: NET_DSA_SJA1105_PTP had never declared any type of dependency on
PTP_1588_CLOCK (`imply` or otherwise); adding a `depends on PTP_1588_CLOCK`
here seems appropriate.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: d1cbfd771ce8 ("ptp_clock: Allow for it to be optional")
Signed-off-by: Clay McClure <clay@daemons.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Wed, 29 Apr 2020 02:01:58 +0000 (19:01 -0700)]
devlink: fix return value after hitting end in region read
Commit
d5b90e99e1d5 ("devlink: report 0 after hitting end in region read")
fixed region dump, but region read still returns a spurious error:
$ devlink region read netdevsim/netdevsim1/dummy snapshot 0 addr 0 len 128
0000000000000000 a6 f4 c4 1c 21 35 95 a6 9d 34 c3 5b 87 5b 35 79
0000000000000010 f3 a0 d7 ee 4f 2f 82 7f c6 dd c4 f6 a5 c3 1b ae
0000000000000020 a4 fd c8 62 07 59 48 03 70 3b c7 09 86 88 7f 68
0000000000000030 6f 45 5d 6d 7d 0e 16 38 a9 d0 7a 4b 1e 1e 2e a6
0000000000000040 e6 1d ae 06 d6 18 00 85 ca 62 e8 7e 11 7e f6 0f
0000000000000050 79 7e f7 0f f3 94 68 bd e6 40 22 85 b6 be 6f b1
0000000000000060 af db ef 5e 34 f0 98 4b 62 9a e3 1b 8b 93 fc 17
devlink answers: Invalid argument
0000000000000070 61 e8 11 11 66 10 a5 f7 b1 ea 8d 40 60 53 ed 12
This is a minimal fix, I'll follow up with a restructuring
so we don't have two checks for the same condition.
Fixes: fdd41ec21e15 ("devlink: Return right error code in case of errors for region read")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nathan Chancellor [Tue, 28 Apr 2020 17:54:56 +0000 (10:54 -0700)]
hv_netvsc: Fix netvsc_start_xmit's return type
netvsc_start_xmit is used as a callback function for the ndo_start_xmit
function pointer. ndo_start_xmit's return type is netdev_tx_t but
netvsc_start_xmit's return type is int.
This causes a failure with Control Flow Integrity (CFI), which requires
function pointer prototypes and callback function definitions to match
exactly. When CFI is in enforcing, the kernel panics. When booting a
CFI kernel with WSL 2, the VM is immediately terminated because of this.
The splat when CONFIG_CFI_PERMISSIVE is used:
[ 5.916765] CFI failure (target: netvsc_start_xmit+0x0/0x10):
[ 5.916771] WARNING: CPU: 8 PID: 0 at kernel/cfi.c:29 __cfi_check_fail+0x2e/0x40
[ 5.916772] Modules linked in:
[ 5.916774] CPU: 8 PID: 0 Comm: swapper/8 Not tainted
5.7.0-rc3-next-20200424-microsoft-cbl-00001-ged4eb37d2c69-dirty #1
[ 5.916776] RIP: 0010:__cfi_check_fail+0x2e/0x40
[ 5.916777] Code: 48 c7 c7 70 98 63 a9 48 c7 c6 11 db 47 a9 e8 69 55 59 00 85 c0 75 02 5b c3 48 c7 c7 73 c6 43 a9 48 89 de 31 c0 e8 12 2d f0 ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 85 f6 74 25
[ 5.916778] RSP: 0018:
ffffa803c0260b78 EFLAGS:
00010246
[ 5.916779] RAX:
712a1af25779e900 RBX:
ffffffffa8cf7950 RCX:
ffffffffa962cf08
[ 5.916779] RDX:
ffffffffa9c36b60 RSI:
0000000000000082 RDI:
ffffffffa9c36b5c
[ 5.916780] RBP:
ffff8ffc4779c2c0 R08:
0000000000000001 R09:
ffffffffa9c3c300
[ 5.916781] R10:
0000000000000151 R11:
ffffffffa9c36b60 R12:
ffff8ffe39084000
[ 5.916782] R13:
ffffffffa8cf7950 R14:
ffffffffa8d12cb0 R15:
ffff8ffe39320140
[ 5.916784] FS:
0000000000000000(0000) GS:
ffff8ffe3bc00000(0000) knlGS:
0000000000000000
[ 5.916785] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 5.916786] CR2:
00007ffef5749408 CR3:
00000002f4f5e000 CR4:
0000000000340ea0
[ 5.916787] Call Trace:
[ 5.916788] <IRQ>
[ 5.916790] __cfi_check+0x3ab58/0x450e0
[ 5.916793] ? dev_hard_start_xmit+0x11f/0x160
[ 5.916795] ? sch_direct_xmit+0xf2/0x230
[ 5.916796] ? __dev_queue_xmit.llvm.
11471227737707190958+0x69d/0x8e0
[ 5.916797] ? neigh_resolve_output+0xdf/0x220
[ 5.916799] ? neigh_connected_output.cfi_jt+0x8/0x8
[ 5.916801] ? ip6_finish_output2+0x398/0x4c0
[ 5.916803] ? nf_nat_ipv6_out+0x10/0xa0
[ 5.916804] ? nf_hook_slow+0x84/0x100
[ 5.916807] ? ip6_input_finish+0x8/0x8
[ 5.916807] ? ip6_output+0x6f/0x110
[ 5.916808] ? __ip6_local_out.cfi_jt+0x8/0x8
[ 5.916810] ? mld_sendpack+0x28e/0x330
[ 5.916811] ? ip_rt_bug+0x8/0x8
[ 5.916813] ? mld_ifc_timer_expire+0x2db/0x400
[ 5.916814] ? neigh_proxy_process+0x8/0x8
[ 5.916816] ? call_timer_fn+0x3d/0xd0
[ 5.916817] ? __run_timers+0x2a9/0x300
[ 5.916819] ? rcu_core_si+0x8/0x8
[ 5.916820] ? run_timer_softirq+0x14/0x30
[ 5.916821] ? __do_softirq+0x154/0x262
[ 5.916822] ? native_x2apic_icr_write+0x8/0x8
[ 5.916824] ? irq_exit+0xba/0xc0
[ 5.916825] ? hv_stimer0_vector_handler+0x99/0xe0
[ 5.916826] ? hv_stimer0_callback_vector+0xf/0x20
[ 5.916826] </IRQ>
[ 5.916828] ? hv_stimer_global_cleanup.cfi_jt+0x8/0x8
[ 5.916829] ? raw_setsockopt+0x8/0x8
[ 5.916830] ? default_idle+0xe/0x10
[ 5.916832] ? do_idle.llvm.
10446269078108580492+0xb7/0x130
[ 5.916833] ? raw_setsockopt+0x8/0x8
[ 5.916833] ? cpu_startup_entry+0x15/0x20
[ 5.916835] ? cpu_hotplug_enable.cfi_jt+0x8/0x8
[ 5.916836] ? start_secondary+0x188/0x190
[ 5.916837] ? secondary_startup_64+0xa5/0xb0
[ 5.916838] ---[ end trace
f2683fa869597ba5 ]---
Avoid this by using the right return type for netvsc_start_xmit.
Fixes: fceaf24a943d8 ("Staging: hv: add the Hyper-V virtual network driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1009
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 1 May 2020 22:23:44 +0000 (15:23 -0700)]
Merge branch 'WoL-fixes-for-DP83822-and-DP83tc811'
Dan Murphy says:
====================
WoL fixes for DP83822 and DP83tc811
The WoL feature for each device was enabled during boot or when the PHY was
brought up which may be undesired. These patches disable the WoL in the
config_init. The disabling and enabling of the WoL is now done though the
set_wol call.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Murphy [Tue, 28 Apr 2020 16:03:54 +0000 (11:03 -0500)]
net: phy: DP83TC811: Fix WoL in config init to be disabled
The WoL feature should be disabled when config_init is called and the
feature should turned on or off when set_wol is called.
In addition updated the calls to modify the registers to use the set_bit
and clear_bit function calls.
Fixes: 6d749428788b ("net: phy: DP83TC811: Introduce support for the
DP83TC811 phy")
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Murphy [Tue, 28 Apr 2020 16:03:53 +0000 (11:03 -0500)]
net: phy: DP83822: Fix WoL in config init to be disabled
The WoL feature should be disabled when config_init is called and the
feature should turned on or off when set_wol is called.
In addition updated the calls to modify the registers to use the set_bit
and clear_bit function calls.
Fixes: 3b427751a9d0 ("net: phy: DP83822 initial driver submission")
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Fri, 1 May 2020 14:53:08 +0000 (08:53 -0600)]
ipv6: Use global sernum for dst validation with nexthop objects
Nik reported a bug with pcpu dst cache when nexthop objects are
used illustrated by the following:
$ ip netns add foo
$ ip -netns foo li set lo up
$ ip -netns foo addr add 2001:db8:11::1/128 dev lo
$ ip netns exec foo sysctl net.ipv6.conf.all.forwarding=1
$ ip li add veth1 type veth peer name veth2
$ ip li set veth1 up
$ ip addr add 2001:db8:10::1/64 dev veth1
$ ip li set dev veth2 netns foo
$ ip -netns foo li set veth2 up
$ ip -netns foo addr add 2001:db8:10::2/64 dev veth2
$ ip -6 nexthop add id 100 via 2001:db8:10::2 dev veth1
$ ip -6 route add 2001:db8:11::1/128 nhid 100
Create a pcpu entry on cpu 0:
$ taskset -a -c 0 ip -6 route get 2001:db8:11::1
Re-add the route entry:
$ ip -6 ro del 2001:db8:11::1
$ ip -6 route add 2001:db8:11::1/128 nhid 100
Route get on cpu 0 returns the stale pcpu:
$ taskset -a -c 0 ip -6 route get 2001:db8:11::1
RTNETLINK answers: Network is unreachable
While cpu 1 works:
$ taskset -a -c 1 ip -6 route get 2001:db8:11::1
2001:db8:11::1 from :: via 2001:db8:10::2 dev veth1 src 2001:db8:10::1 metric 1024 pref medium
Conversion of FIB entries to work with external nexthop objects
missed an important difference between IPv4 and IPv6 - how dst
entries are invalidated when the FIB changes. IPv4 has a per-network
namespace generation id (rt_genid) that is bumped on changes to the FIB.
Checking if a dst_entry is still valid means comparing rt_genid in the
rtable to the current value of rt_genid for the namespace.
IPv6 also has a per network namespace counter, fib6_sernum, but the
count is saved per fib6_node. With the per-node counter only dst_entries
based on fib entries under the node are invalidated when changes are
made to the routes - limiting the scope of invalidations. IPv6 uses a
reference in the rt6_info, 'from', to track the corresponding fib entry
used to create the dst_entry. When validating a dst_entry, the 'from'
is used to backtrack to the fib6_node and check the sernum of it to the
cookie passed to the dst_check operation.
With the inline format (nexthop definition inline with the fib6_info),
dst_entries cached in the fib6_nh have a 1:1 correlation between fib
entries, nexthop data and dst_entries. With external nexthops, IPv6
looks more like IPv4 which means multiple fib entries across disparate
fib6_nodes can all reference the same fib6_nh. That means validation
of dst_entries based on external nexthops needs to use the IPv4 format
- the per-network namespace counter.
Add sernum to rt6_info and set it when creating a pcpu dst entry. Update
rt6_get_cookie to return sernum if it is set and update dst_check for
IPv6 to look for sernum set and based the check on it if so. Finally,
rt6_get_pcpu_route needs to validate the cached entry before returning
a pcpu entry (similar to the rt_cache_valid calls in __mkroute_input and
__mkroute_output for IPv4).
This problem only affects routes using the new, external nexthops.
Thanks to the kbuild test robot for catching the IS_ENABLED needed
around rt_genid_ipv6 before I sent this out.
Fixes: 5b98324ebe29 ("ipv6: Allow routes to use nexthop objects")
Reported-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Tested-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 1 May 2020 18:13:36 +0000 (11:13 -0700)]
Merge tag 'block-5.7-2020-05-01' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes for this release:
- NVMe pull request from Christoph, with a single fix for a double
free in the namespace error handling.
- Kill the bd_openers check in blk_drop_partitions(), fixing a
regression in this merge window (Christoph)"
* tag 'block-5.7-2020-05-01' of git://git.kernel.dk/linux-block:
block: remove the bd_openers checks in blk_drop_partitions
nvme: prevent double free in nvme_alloc_ns() error handling
Linus Torvalds [Fri, 1 May 2020 18:10:09 +0000 (11:10 -0700)]
Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Three driver bugfixes, and two reverts because the original patches
revealed underlying problems which the Tegra guys are now working on"
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: aspeed: Avoid i2c interrupt status clear race condition.
i2c: amd-mp2-pci: Fix Oops in amd_mp2_pci_init() error handling
Revert "i2c: tegra: Better handle case where CPU0 is busy for a long time"
Revert "i2c: tegra: Synchronize DMA before termination"
i2c: iproc: generate stop event for slave writes
Linus Torvalds [Fri, 1 May 2020 18:05:28 +0000 (11:05 -0700)]
Merge tag 'sound-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a collection of small fixes around this time:
- One more try for fixing PCM OSS regression
- HD-audio: a new quirk for Lenovo, the improved driver blacklisting,
a lock fix in the minor error path, and a fix for the possible race
at monitor notifiaction
- USB-audio: a quirk ID fix, a fix for POD HD500 workaround"
* tag 'sound-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usb-audio: Correct a typo of NuPrime DAC-10 USB ID
ALSA: opti9xx: shut up gcc-10 range warning
ALSA: hda/hdmi: fix without unlocked before return
ALSA: hda/hdmi: fix race in monitor detection during probe
ALSA: hda/realtek - Two front mics on a Lenovo ThinkCenter
ALSA: line6: Fix POD HD500 audio playback
ALSA: pcm: oss: Place the plugin buffer overflow checks correctly (for 5.7)
ALSA: pcm: oss: Place the plugin buffer overflow checks correctly
ALSA: hda: Match both PCI ID and SSID for driver blacklist
Linus Torvalds [Fri, 1 May 2020 18:01:51 +0000 (11:01 -0700)]
Merge tag 'drm-fixes-2020-05-01' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular scheduled fixes for graphics. Nothing to extreme bunch of
amdgpu fixes, i915 and qxl fixes, along with some misc ones.
All seems to be progressing normally.
core:
- EDID off by one DTD fix
- DP mst write return code fix
dma-buf:
- fix SET_NAME ioctl uapi
- doc fixes
amdgpu:
- Fix a green screen on resume issue
- PM fixes for SR-IOV SDMA fix for navi
- Renoir display fixes
- Cursor and pageflip stuttering fixes
- Misc additional display fixes
- (uapi) Add additional DCC tiling flags for navi1x
i915:
- Fix selftest refcnt leak (Xiyu)
- Fix gem vma lock (Chris)
- Fix gt's i915_request.timeline acquire by checking if cacheline is
valid (Chris)
- Fix IRQ postinistall fault masks (Matt)
qxl:
- use after gree fix
- fix lost kunmap
- release leak fix
virtio:
- context destruction fix"
* tag 'drm-fixes-2020-05-01' of git://anongit.freedesktop.org/drm/drm: (26 commits)
dma-buf: fix documentation build warnings
drm/qxl: qxl_release use after free
drm/qxl: lost qxl_bo_kunmap_atomic_page in qxl_image_init_helper()
drm/i915: Use proper fault mask in interrupt postinstall too
drm/amd/display: Use cursor locking to prevent flip delays
drm/amd/display: Update downspread percent to match spreadsheet for DCN2.1
drm/amd/display: Defer cursor update around VUPDATE for all ASIC
drm/amd/display: fix rn soc bb update
drm/amd/display: check if REFCLK_CNTL register is present
drm/amdgpu: bump version for invalidate L2 before SDMA IBs
drm/amdgpu: invalidate L2 before SDMA IBs (v2)
drm/amdgpu: add tiling flags from Mesa
drm/amd/powerplay: avoid using pm_en before it is initialized revised
Revert "drm/amd/powerplay: avoid using pm_en before it is initialized"
drm/qxl: qxl_release leak in qxl_hw_surface_alloc()
drm/qxl: qxl_release leak in qxl_draw_dirty_fb()
drm/virtio: only destroy created contexts
drm/dp_mst: Fix drm_dp_send_dpcd_write() return code
drm/i915/gt: Check cacheline is valid before acquiring
drm/i915/gem: Hold obj->vma.lock over for_each_ggtt_vma()
...
Linus Torvalds [Fri, 1 May 2020 18:00:07 +0000 (11:00 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four minor fixes: three in drivers and one in the core.
The core one allows an additional state change that fixes a regression
introduced by an update to the aacraid driver in the previous merge
window"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target/iblock: fix WRITE SAME zeroing
scsi: qla2xxx: check UNLOADING before posting async work
scsi: qla2xxx: set UNLOADING before waiting for session deletion
scsi: core: Allow the state change from SDEV_QUIESCE to SDEV_BLOCK
Pavel Begunkov [Fri, 1 May 2020 14:09:38 +0000 (17:09 +0300)]
io_uring: punt splice async because of inode mutex
Nonblocking do_splice() still may wait for some time on an inode mutex.
Let's play safe and always punt it async.
Reported-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Fri, 1 May 2020 14:09:37 +0000 (17:09 +0300)]
io_uring: check non-sync defer_list carefully
io_req_defer() do double-checked locking. Use proper helpers for that,
i.e. list_empty_careful().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Fri, 1 May 2020 14:09:36 +0000 (17:09 +0300)]
io_uring: fix extra put in sync_file_range()
[ 40.179474] refcount_t: underflow; use-after-free.
[ 40.179499] WARNING: CPU: 6 PID: 1848 at lib/refcount.c:28 refcount_warn_saturate+0xae/0xf0
...
[ 40.179612] RIP: 0010:refcount_warn_saturate+0xae/0xf0
[ 40.179617] Code: 28 44 0a 01 01 e8 d7 01 c2 ff 0f 0b 5d c3 80 3d 15 44 0a 01 00 75 91 48 c7 c7 b8 f5 75 be c6 05 05 44 0a 01 01 e8 b7 01 c2 ff <0f> 0b 5d c3 80 3d f3 43 0a 01 00 0f 85 6d ff ff ff 48 c7 c7 10 f6
[ 40.179619] RSP: 0018:
ffffb252423ebe18 EFLAGS:
00010286
[ 40.179623] RAX:
0000000000000000 RBX:
ffff98d65e929400 RCX:
0000000000000000
[ 40.179625] RDX:
0000000000000001 RSI:
0000000000000086 RDI:
00000000ffffffff
[ 40.179627] RBP:
ffffb252423ebe18 R08:
0000000000000001 R09:
000000000000055d
[ 40.179629] R10:
0000000000000c8c R11:
0000000000000001 R12:
0000000000000000
[ 40.179631] R13:
ffff98d68c434400 R14:
ffff98d6a9cbaa20 R15:
ffff98d6a609ccb8
[ 40.179634] FS:
0000000000000000(0000) GS:
ffff98d6af580000(0000) knlGS:
0000000000000000
[ 40.179636] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 40.179638] CR2:
00000000033e3194 CR3:
000000006480a003 CR4:
00000000003606e0
[ 40.179641] Call Trace:
[ 40.179652] io_put_req+0x36/0x40
[ 40.179657] io_free_work+0x15/0x20
[ 40.179661] io_worker_handle_work+0x2f5/0x480
[ 40.179667] io_wqe_worker+0x2a9/0x360
[ 40.179674] ? _raw_spin_unlock_irqrestore+0x24/0x40
[ 40.179681] kthread+0x12c/0x170
[ 40.179685] ? io_worker_handle_work+0x480/0x480
[ 40.179690] ? kthread_park+0x90/0x90
[ 40.179695] ret_from_fork+0x35/0x40
[ 40.179702] ---[ end trace
85027405f00110aa ]---
Opcode handler must never put submission ref, but that's what
io_sync_file_range_finish() do. use io_steal_work() there.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Tang Bin [Sat, 18 Apr 2020 13:47:03 +0000 (21:47 +0800)]
iommu/qcom: Fix local_base status check
The function qcom_iommu_device_probe() does not perform sufficient
error checking after executing devm_ioremap_resource(), which can
result in crashes if a critical error path is encountered.
Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu")
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200418134703.1760-1-tangbin@cmss.chinamobile.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Greg Kroah-Hartman [Thu, 30 Apr 2020 12:01:20 +0000 (14:01 +0200)]
iommu: Properly export iommu_group_get_for_dev()
In commit
a7ba5c3d008d ("drivers/iommu: Export core IOMMU API symbols to
permit modular drivers") a bunch of iommu symbols were exported, all
with _GPL markings except iommu_group_get_for_dev(). That export should
also be _GPL like the others.
Fixes: a7ba5c3d008d ("drivers/iommu: Export core IOMMU API symbols to permit modular drivers")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: John Garry <john.garry@huawei.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20200430120120.2948448-1-gregkh@linuxfoundation.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Lu Baolu [Fri, 1 May 2020 07:24:27 +0000 (15:24 +0800)]
iommu/vt-d: Use right Kconfig option name
The CONFIG_ prefix should be added in the code.
Fixes: 046182525db61 ("iommu/vt-d: Add Kconfig option to enable/disable scalable mode")
Reported-and-tested-by: Kumar, Sanjay K <sanjay.k.kumar@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Link: https://lore.kernel.org/r/20200501072427.14265-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Suravee Suthikulpanit [Wed, 22 Apr 2020 13:30:02 +0000 (08:30 -0500)]
iommu/amd: Fix legacy interrupt remapping for x2APIC-enabled system
Currently, system fails to boot because the legacy interrupt remapping
mode does not enable 128-bit IRTE (GA), which is required for x2APIC
support.
Fix by using AMD_IOMMU_GUEST_IR_LEGACY_GA mode when booting with
kernel option amd_iommu_intr=legacy instead. The initialization
logic will check GASup and automatically fallback to using
AMD_IOMMU_GUEST_IR_LEGACY if GA mode is not supported.
Fixes: 3928aa3f5775 ("iommu/amd: Detect and enable guest vAPIC support")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/1587562202-14183-1-git-send-email-suravee.suthikulpanit@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Xiaoguang Wang [Fri, 1 May 2020 00:52:56 +0000 (08:52 +0800)]
io_uring: use cond_resched() in io_ring_ctx_wait_and_kill()
While working on to make io_uring sqpoll mode support syscalls that need
struct files_struct, I got cpu soft lockup in io_ring_ctx_wait_and_kill(),
while (ctx->sqo_thread && !wq_has_sleeper(&ctx->sqo_wait))
cpu_relax();
above loop never has an chance to exit, it's because preempt isn't enabled
in the kernel, and the context calling io_ring_ctx_wait_and_kill() and
io_sq_thread() run in the same cpu, if io_sq_thread calls a cond_resched()
yield cpu and another context enters above loop, then io_sq_thread() will
always in runqueue and never exit.
Use cond_resched() can fix this issue.
Reported-by: syzbot+66243bb7126c410cefe6@syzkaller.appspotmail.com
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Bijan Mottahedeh [Thu, 30 Apr 2020 00:47:50 +0000 (17:47 -0700)]
io_uring: use proper references for fallback_req locking
Use ctx->fallback_req address for test_and_set_bit_lock() and
clear_bit_unlock().
Signed-off-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Tue, 28 Apr 2020 19:16:53 +0000 (13:16 -0600)]
io_uring: only force async punt if poll based retry can't handle it
We do blocking retry from our poll handler, if the file supports polled
notifications. Only mark the request as needing an async worker if we
can't poll for it.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Tue, 28 Apr 2020 19:15:06 +0000 (13:15 -0600)]
io_uring: enable poll retry for any file with ->read_iter / ->write_iter
We can have files like eventfd where it's perfectly fine to do poll
based retry on them, right now io_file_supports_async() doesn't take
that into account.
Pass in data direction and check the f_op instead of just always needing
an async worker.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Rahul Lakkireddy [Wed, 29 Apr 2020 18:52:19 +0000 (00:22 +0530)]
cxgb4: fix EOTID leak when disabling TC-MQPRIO offload
Under heavy load, the EOTID termination FLOWC request fails to get
enqueued to the end of the Tx ring due to lack of credits. This
results in EOTID leak.
When disabling TC-MQPRIO offload, the link is already brought down
to cleanup EOTIDs. So, flush any pending enqueued skbs that can't be
sent outside the wire, to make room for FLOWC request. Also, move the
FLOWC descriptor consumption logic closer to when the FLOWC request is
actually posted to hardware.
Fixes: 0e395b3cb1fb ("cxgb4: add FLOWC based QoS offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Wed, 29 Apr 2020 15:09:32 +0000 (18:09 +0300)]
stmmac: intel: Fix kernel crash due to wrong error path
Unfortunately sometimes ->probe() may fail. The commit
b9663b7ca6ff
("net: stmmac: Enable SERDES power up/down sequence")
messed up with error handling and thus:
[ 12.811311] ------------[ cut here ]------------
[ 12.811993] kernel BUG at net/core/dev.c:9937!
Fix this by properly crafted error path.
Fixes: b9663b7ca6ff ("net: stmmac: Enable SERDES power up/down sequence")
Cc: Voon Weifeng <weifeng.voon@intel.com>
Cc: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Mon, 27 Apr 2020 15:05:47 +0000 (18:05 +0300)]
mlxsw: spectrum_acl_tcam: Position vchunk in a vregion list properly
Vregion helpers to get min and max priority depend on the correct
ordering of vchunks in the vregion list. However, the current code
always adds new chunk to the end of the list, no matter what the
priority is. Fix this by finding the correct place in the list and put
vchunk there.
Fixes: 22a677661f56 ("mlxsw: spectrum: Introduce ACL core with simple TCAM implementation")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Toke Høiland-Jørgensen [Mon, 27 Apr 2020 14:11:05 +0000 (16:11 +0200)]
tunnel: Propagate ECT(1) when decapsulating as recommended by RFC6040
RFC 6040 recommends propagating an ECT(1) mark from an outer tunnel header
to the inner header if that inner header is already marked as ECT(0). When
RFC 6040 decapsulation was implemented, this case of propagation was not
added. This simply appears to be an oversight, so let's fix that.
Fixes: eccc1bb8d4b4 ("tunnel: drop packet if ECN present with not-ECT")
Reported-by: Bob Briscoe <ietf@bobbriscoe.net>
Reported-by: Olivier Tilmans <olivier.tilmans@nokia-bell-labs.com>
Cc: Dave Taht <dave.taht@gmail.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Mon, 27 Apr 2020 10:51:20 +0000 (13:51 +0300)]
net: macb: Fix runtime PM refcounting
The commit
e6a41c23df0d, while trying to fix an issue,
("net: macb: ensure interface is not suspended on at91rm9200")
introduced a refcounting regression, because in error case refcounter
must be balanced. Fix it by calling pm_runtime_put_noidle() in error case.
While here, fix the same mistake in other couple of places.
Fixes: e6a41c23df0d ("net: macb: ensure interface is not suspended on at91rm9200")
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe JAILLET [Sun, 26 Apr 2020 20:59:21 +0000 (22:59 +0200)]
net: moxa: Fix a potential double 'free_irq()'
Should an irq requested with 'devm_request_irq' be released explicitly,
it should be done by 'devm_free_irq()', not 'free_irq()'.
Fixes: 6c821bd9edc9 ("net: Add MOXA ART SoCs ethernet driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Dial [Fri, 24 Apr 2020 22:51:08 +0000 (18:51 -0400)]
net: macsec: preserve ingress frame ordering
MACsec decryption always occurs in a softirq context. Since
the FPU may not be usable in the softirq context, the call to
decrypt may be scheduled on the cryptd work queue. The cryptd
work queue does not provide ordering guarantees. Therefore,
preserving order requires masking out ASYNC implementations
of gcm(aes).
For instance, an Intel CPU with AES-NI makes available the
generic-gcm-aesni driver from the aesni_intel module to
implement gcm(aes). However, this implementation requires
the FPU, so it is not always available to use from a softirq
context, and will fallback to the cryptd work queue, which
does not preserve frame ordering. With this change, such a
system would select gcm_base(ctr(aes-aesni),ghash-generic).
While the aes-aesni implementation prefers to use the FPU, it
will fallback to the aes-asm implementation if unavailable.
By using a synchronous version of gcm(aes), the decryption
will complete before returning from crypto_aead_decrypt().
Therefore, the macsec_decrypt_done() callback will be called
before returning from macsec_decrypt(). Thus, the order of
calls to macsec_post_decrypt() for the frames is preserved.
While it's presumable that the pure AES-NI version of gcm(aes)
is more performant, the hybrid solution is capable of gigabit
speeds on modest hardware. Regardless, preserving the order
of frames is paramount for many network protocols (e.g.,
triggering TCP retries). Within the MACsec driver itself, the
replay protection is tripped by the out-of-order frames, and
can cause frames to be dropped.
This bug has been present in this code since it was added in
v4.6, however it may not have been noticed since not all CPUs
have FPU offload available. Additionally, the bug manifests
as occasional out-of-order packets that are easily
misattributed to other network phenomena.
When this code was added in v4.6, the crypto/gcm.c code did
not restrict selection of the ghash function based on the
ASYNC flag. For instance, x86 CPUs with PCLMULQDQ would
select the ghash-clmulni driver instead of ghash-generic,
which submits to the cryptd work queue if the FPU is busy.
However, this bug was was corrected in v4.8 by commit
b30bdfa86431afbafe15284a3ad5ac19b49b88e3, and was backported
all the way back to the v3.14 stable branch, so this patch
should be applicable back to the v4.6 stable branch.
Signed-off-by: Scott Dial <scott@scottdial.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Fri, 1 May 2020 01:19:54 +0000 (11:19 +1000)]
Merge tag 'amd-drm-fixes-5.7-2020-04-29' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.7-2020-04-29:
amdgpu:
- Fix a green screen on resume issue
- PM fixes for SR-IOV
- SDMA fix for navi
- Renoir display fixes
- Cursor and pageflip stuttering fixes
- Misc additional display fixes
UAPI:
- Add additional DCC tiling flags for navi1x
Used by: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4697
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200429212008.4306-1-alexander.deucher@amd.com
David S. Miller [Fri, 1 May 2020 01:07:16 +0000 (18:07 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Do not update the UDP checksum when it's zero, from Guillaume Nault.
2) Fix return of local variable in nf_osf, from Arnd Bergmann.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 1 May 2020 01:04:58 +0000 (18:04 -0700)]
Merge branch 'net-ipa-three-bug-fixes'
Alex Elder says:
====================
net: ipa: three bug fixes
This series fixes three bugs in the Qualcomm IPA code. The third
adds a missing error code initialization step.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Elder [Thu, 30 Apr 2020 21:35:12 +0000 (16:35 -0500)]
net: ipa: zero return code before issuing generic EE command
Zero the result code stored in a field of the scratch 0 register
before issuing a generic EE command. This just guarantees that
the value we read later was actually written as a result of the
command.
Also add the definitions of two more possible result codes that can
be returned when issuing flow control enable or disable commands:
INCORRECT_CHANNEL_STATE: - channel must be in started state
INCORRECT_DIRECTION - flow control is only valid for TX channels
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Elder [Thu, 30 Apr 2020 21:35:11 +0000 (16:35 -0500)]
net: ipa: fix an error message in gsi_channel_init_one()
An error message about limiting the number of TREs used prints the
wrong value. Fix this bug.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Elder [Thu, 30 Apr 2020 21:35:10 +0000 (16:35 -0500)]
net: ipa: fix a bug in ipa_endpoint_stop()
In ipa_endpoint_stop(), for TX endpoints we set the number of retries
to 0. When we break out of the loop, retries being 0 means we return
EIO rather than the value of ret (which should be 0).
Fix this by using a non-zero retry count for both RX and TX
channels, and just break out of the loop after calling
gsi_channel_stop() for TX channels. This way only RX channels
will retry, and the retry count will be non-zero at the end
for TX channels (so the proper value gets returned).
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Fri, 1 May 2020 00:56:13 +0000 (10:56 +1000)]
Merge tag 'drm-intel-fixes-2020-04-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix selftest refcnt leak (Xiyu)
- Fix gem vma lock (Chris)
- Fix gt's i915_request.timeline acquire by checking if cacheline is valid (Chris)
- Fix IRQ postinistall fault masks (Matt)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200430140042.GA270140@intel.com
David S. Miller [Fri, 1 May 2020 01:02:46 +0000 (18:02 -0700)]
Merge branch 'ionic-fw-upgrade-bug-fixes'
Shannon Nelson says:
====================
ionic: fw upgrade bug fixes
These patches address issues found in additional internal
fw-upgrade testing.
v2:
- replaced extra state flag with postponing first link check
- added device reset patch
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Shannon Nelson [Thu, 30 Apr 2020 21:33:43 +0000 (14:33 -0700)]
ionic: add device reset to fw upgrade down
Doing a device reset addresses an obscure FW timing issue in
the FW upgrade process.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shannon Nelson [Thu, 30 Apr 2020 21:33:42 +0000 (14:33 -0700)]
ionic: refresh devinfo after fw-upgrade
Make sure we can report the new FW version after a
fw-upgrade has finished by re-reading the device's
fw version information.
Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shannon Nelson [Thu, 30 Apr 2020 21:33:41 +0000 (14:33 -0700)]
ionic: no link check until after probe
Don't bother with the link check during probe, let
the watchdog notice the first link-up. This allows
probe to finish cleanly without any interruptions
from over excited user programs opening the device
as soon as it is registered.
Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Thu, 30 Apr 2020 19:51:32 +0000 (21:51 +0200)]
dp83640: reverse arguments to list_add_tail
In this code, it appears that phyter_clocks is a list head, based on
the previous list_for_each, and that clock->list is intended to be a
list element, given that it has just been initialized in
dp83640_clock_init. Accordingly, switch the arguments to
list_add_tail, which takes the list head as the second argument.
Fixes: cb646e2b02b27 ("ptp: Added a clock driver for the National Semiconductor PHYTER.")
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Thu, 30 Apr 2020 19:38:45 +0000 (22:38 +0300)]
net: bridge: vlan: Add a schedule point during VLAN processing
User space can request to delete a range of VLANs from a bridge slave in
one netlink request. For each deleted VLAN the FDB needs to be traversed
in order to flush all the affected entries.
If a large range of VLANs is deleted and the number of FDB entries is
large or the FDB lock is contented, it is possible for the kernel to
loop through the deleted VLANs for a long time. In case preemption is
disabled, this can result in a soft lockup.
Fix this by adding a schedule point after each VLAN is deleted to yield
the CPU, if needed. This is safe because the VLANs are traversed in
process context.
Fixes: bdced7ef7838 ("bridge: support for multiple vlans and vlan ranges in setlink and dellink requests")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Tested-by: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Fri, 1 May 2020 00:41:59 +0000 (10:41 +1000)]
Merge tag 'drm-misc-fixes-2020-04-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
A few resources-related fixes for qxl, some doc build warnings and ioctl
fixes for dma-buf, an off-by-one fix in edid, and a return code fix in
DP-MST
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200430153201.wx6of2b2gsoip7bk@gilmour.lan
Linus Torvalds [Thu, 30 Apr 2020 23:45:08 +0000 (16:45 -0700)]
Merge tag 'for-5.7/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Document DM integrity allow_discard feature that was added during 5.7
merge window.
- Fix potential for DM writecache data corruption during DM table
reloads.
- Fix DM verity's FEC support's hash block number calculation in
verity_fec_decode().
- Fix bio-based DM multipath crash due to use of stale copy of
MPATHF_QUEUE_IO flag state in __map_bio().
* tag 'for-5.7/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm multipath: use updated MPATHF_QUEUE_IO on mapping for bio-based mpath
dm verity fec: fix hash block number in verity_fec_decode
dm writecache: fix data corruption when reloading the target
dm integrity: document allow_discard option
Linus Torvalds [Thu, 30 Apr 2020 23:35:45 +0000 (16:35 -0700)]
Merge tag 'selinux-pr-
20200430' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fixes from Paul Moore:
"Two more SELinux patches to fix problems in the v5.7-rcX releases.
Wei Yongjun's patch fixes a return code in an error path, and my patch
fixes a problem where we were not correctly applying access controls
to all of the netlink messages in the netlink_send LSM hook"
* tag 'selinux-pr-
20200430' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: properly handle multiple messages in selinux_netlink_send()
selinux: fix error return code in cond_read_list()
Linus Torvalds [Thu, 30 Apr 2020 23:32:47 +0000 (16:32 -0700)]
Merge tag 'linux-kselftest-kunit-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kunit fix from Shuah Khan:
"A single fix to flush the test summary to the console log without
delay"
* tag 'linux-kselftest-kunit-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Add missing newline in summary message
Linus Torvalds [Thu, 30 Apr 2020 23:28:49 +0000 (16:28 -0700)]
Merge tag 'linux-kselftest-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
- ftrace test fixes to check for required filter files and kprobe args.
- Kselftest build/cross-build dependency check script to make it easier
for test ring admins/users to configure build systems correctly for
build/cross-build kselftests. Currently checks library dependencies.
- Checks if Kselftests can be built/cross-built on a system running
compile test on a trivial C file with LDLIBS specified for each
individual test in their Makefiles.
- Prints suggested target list for a system filtering out tests
failed the build dependency check from the TARGETS in Selftests
the main Makefile when optional -p is specified.
- Prints pass/fail dependency check for each tests/sub-test.
- Prints pass/fail targets and libraries.
- Default: runs dependency checks on all tests.
- Optional test name can be specified to check dependencies for it.
* tag 'linux-kselftest-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/ftrace: Check the first record for kprobe_args_type.tc
selftests: add build/cross-build dependency check script
selftests/ftrace: Check required filter files before running test
Juliet Kim [Thu, 30 Apr 2020 18:22:11 +0000 (13:22 -0500)]
ibmvnic: Skip fatal error reset after passive init
During MTU change, the following events may happen.
Client-driven CRQ initialization fails due to partner’s CRQ closed,
causing client to enqueue a reset task for FATAL_ERROR. Then passive
(server-driven) CRQ initialization succeeds, causing client to
release CRQ and enqueue a reset task for failover. If the passive
CRQ initialization occurs before the FATAL reset task is processed,
the FATAL error reset task would try to access a CRQ message queue
that was freed, causing an oops. The problem may be most likely to
occur during DLPAR add vNIC with a non-default MTU, because the DLPAR
process will automatically issue a change MTU request.
Fix this by not processing fatal error reset if CRQ is passively
initialized after client-driven CRQ initialization fails.
Signed-off-by: Juliet Kim <julietk@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Tue, 28 Apr 2020 13:59:02 +0000 (09:59 -0400)]
selinux: properly handle multiple messages in selinux_netlink_send()
Fix the SELinux netlink_send hook to properly handle multiple netlink
messages in a single sk_buff; each message is parsed and subject to
SELinux access control. Prior to this patch, SELinux only inspected
the first message in the sk_buff.
Cc: stable@vger.kernel.org
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
David S. Miller [Thu, 30 Apr 2020 19:58:11 +0000 (12:58 -0700)]
Merge tag 'mlx5-fixes-2020-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
Mellanox, mlx5 fixes 2020-04-29
This series introduces some fixes to mlx5 driver.
Please pull and let me know if there is any problem.
v2:
- Dropped the ktls patch, Tariq has to check if it is fixable in the stack
For -stable v4.12
('net/mlx5: Fix forced completion access non initialized command entry')
('net/mlx5: Fix command entry leak in Internal Error State')
For -stable v5.4
('net/mlx5: DR, On creation set CQ's arm_db member to right value')
For -stable v5.6
('net/mlx5e: Fix q counters on uplink representors')
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:03:22 +0000 (15:03 +0200)]
mptcp: fix uninitialized value access
tcp_v{4,6}_syn_recv_sock() set 'own_req' only when returning
a not NULL 'child', let's check 'own_req' only if child is
available to avoid an - unharmful - UBSAN splat.
v1 -> v2:
- reference the correct hash
Fixes: 4c8941de781c ("mptcp: avoid flipping mp_capable field in syn_recv_sock()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 30 Apr 2020 19:23:23 +0000 (12:23 -0700)]
Merge branch 'mptcp-fix-incoming-options-parsing'
Paolo Abeni says:
====================
mptcp: fix incoming options parsing
This series addresses a serious issue in MPTCP option parsing.
This is bigger than the usual -net change, but I was unable to find a
working, sane, smaller fix.
The core change is inside patch 2/5 which moved MPTCP options parsing from
the TCP code inside existing MPTCP hooks and clean MPTCP options status on
each processed packet.
The patch 1/5 is a needed pre-requisite, and patches 3,4,5 are smaller,
related fixes.
v1 -> v2:
- cleaned-up patch 1/5
- rebased on top of current -net
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:01:55 +0000 (15:01 +0200)]
mptcp: initialize the data_fin field for mpc packets
When parsing MPC+data packets we set the dss field, so
we must also initialize the data_fin, or we can find stray
value there.
Fixes: 9a19371bf029 ("mptcp: fix data_fin handing in RX path")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:01:54 +0000 (15:01 +0200)]
mptcp: fix 'use_ack' option access.
The mentioned RX option field is initialized only for DSS
packet, we must access it only if 'dss' is set too, or
the subflow will end-up in a bad status, leading to
RFC violations.
Fixes: d22f4988ffec ("mptcp: process MP_CAPABLE data option")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:01:53 +0000 (15:01 +0200)]
mptcp: avoid a WARN on bad input.
Syzcaller has found a way to trigger the WARN_ON_ONCE condition
in check_fully_established().
The root cause is a legit fallback to TCP scenario, so replace
the WARN with a plain message on a more strict condition.
Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:01:52 +0000 (15:01 +0200)]
mptcp: move option parsing into mptcp_incoming_options()
The mptcp_options_received structure carries several per
packet flags (mp_capable, mp_join, etc.). Such fields must
be cleared on each packet, even on dropped ones or packet
not carrying any MPTCP options, but the current mptcp
code clears them only on TCP option reset.
On several races/corner cases we end-up with stray bits in
incoming options, leading to WARN_ON splats. e.g.:
[ 171.164906] Bad mapping: ssn=32714 map_seq=1 map_data_len=32713
[ 171.165006] WARNING: CPU: 1 PID: 5026 at net/mptcp/subflow.c:533 warn_bad_map (linux-mptcp/net/mptcp/subflow.c:533 linux-mptcp/net/mptcp/subflow.c:531)
[ 171.167632] Modules linked in: ip6_vti ip_vti ip_gre ipip sit tunnel4 ip_tunnel geneve ip6_udp_tunnel udp_tunnel macsec macvtap tap ipvlan macvlan 8021q garp mrp xfrm_interface veth netdevsim nlmon dummy team bonding vcan bridge stp llc ip6_gre gre ip6_tunnel tunnel6 tun binfmt_misc intel_rapl_msr intel_rapl_common rfkill kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel joydev virtio_balloon pcspkr i2c_piix4 sunrpc ip_tables xfs libcrc32c crc32c_intel serio_raw virtio_console ata_generic virtio_blk virtio_net net_failover failover ata_piix libata
[ 171.199464] CPU: 1 PID: 5026 Comm: repro Not tainted 5.7.0-rc1.mptcp_f227fdf5d388+ #95
[ 171.200886] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-2.fc30 04/01/2014
[ 171.202546] RIP: 0010:warn_bad_map (linux-mptcp/net/mptcp/subflow.c:533 linux-mptcp/net/mptcp/subflow.c:531)
[ 171.206537] Code: c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1d 8b 55 3c 44 89 e6 48 c7 c7 20 51 13 95 e8 37 8b 22 fe <0f> 0b 48 83 c4 08 5b 5d 41 5c c3 89 4c 24 04 e8 db d6 94 fe 8b 4c
[ 171.220473] RSP: 0018:
ffffc90000150560 EFLAGS:
00010282
[ 171.221639] RAX:
0000000000000000 RBX:
0000000000000000 RCX:
0000000000000000
[ 171.223108] RDX:
0000000000000000 RSI:
0000000000000008 RDI:
fffff5200002a09e
[ 171.224388] RBP:
ffff8880aa6e3c00 R08:
0000000000000001 R09:
fffffbfff2ec9955
[ 171.225706] R10:
ffffffff9764caa7 R11:
fffffbfff2ec9954 R12:
0000000000007fca
[ 171.227211] R13:
ffff8881066f4a7f R14:
ffff8880aa6e3c00 R15:
0000000000000020
[ 171.228460] FS:
00007f8623719740(0000) GS:
ffff88810be00000(0000) knlGS:
0000000000000000
[ 171.230065] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 171.231303] CR2:
00007ffdab190a50 CR3:
00000001038ea006 CR4:
0000000000160ee0
[ 171.232586] Call Trace:
[ 171.233109] <IRQ>
[ 171.233531] get_mapping_status (linux-mptcp/net/mptcp/subflow.c:691)
[ 171.234371] mptcp_subflow_data_available (linux-mptcp/net/mptcp/subflow.c:736 linux-mptcp/net/mptcp/subflow.c:832)
[ 171.238181] subflow_state_change (linux-mptcp/net/mptcp/subflow.c:1085 (discriminator 1))
[ 171.239066] tcp_fin (linux-mptcp/net/ipv4/tcp_input.c:4217)
[ 171.240123] tcp_data_queue (linux-mptcp/./include/linux/compiler.h:199 linux-mptcp/net/ipv4/tcp_input.c:4822)
[ 171.245083] tcp_rcv_established (linux-mptcp/./include/linux/skbuff.h:1785 linux-mptcp/./include/net/tcp.h:1774 linux-mptcp/./include/net/tcp.h:1847 linux-mptcp/net/ipv4/tcp_input.c:5238 linux-mptcp/net/ipv4/tcp_input.c:5730)
[ 171.254089] tcp_v4_rcv (linux-mptcp/./include/linux/spinlock.h:393 linux-mptcp/net/ipv4/tcp_ipv4.c:2009)
[ 171.258969] ip_protocol_deliver_rcu (linux-mptcp/net/ipv4/ip_input.c:204 (discriminator 1))
[ 171.260214] ip_local_deliver_finish (linux-mptcp/./include/linux/rcupdate.h:651 linux-mptcp/net/ipv4/ip_input.c:232)
[ 171.261389] ip_local_deliver (linux-mptcp/./include/linux/netfilter.h:307 linux-mptcp/./include/linux/netfilter.h:301 linux-mptcp/net/ipv4/ip_input.c:252)
[ 171.265884] ip_rcv (linux-mptcp/./include/linux/netfilter.h:307 linux-mptcp/./include/linux/netfilter.h:301 linux-mptcp/net/ipv4/ip_input.c:539)
[ 171.273666] process_backlog (linux-mptcp/./include/linux/rcupdate.h:651 linux-mptcp/net/core/dev.c:6135)
[ 171.275328] net_rx_action (linux-mptcp/net/core/dev.c:6572 linux-mptcp/net/core/dev.c:6640)
[ 171.280472] __do_softirq (linux-mptcp/./arch/x86/include/asm/jump_label.h:25 linux-mptcp/./include/linux/jump_label.h:200 linux-mptcp/./include/trace/events/irq.h:142 linux-mptcp/kernel/softirq.c:293)
[ 171.281379] do_softirq_own_stack (linux-mptcp/arch/x86/entry/entry_64.S:1083)
[ 171.282358] </IRQ>
We could address the issue clearing explicitly the relevant fields
in several places - tcp_parse_option, tcp_fast_parse_options,
possibly others.
Instead we move the MPTCP option parsing into the already existing
mptcp ingress hook, so that we need to clear the fields in a single
place.
This allows us dropping an MPTCP hook from the TCP code and
removing the quite large mptcp_options_received from the tcp_sock
struct. On the flip side, the MPTCP sockets will traverse the
option space twice (in tcp_parse_option() and in
mptcp_incoming_options(). That looks acceptable: we already
do that for syn and 3rd ack packets, plain TCP socket will
benefit from it, and even MPTCP sockets will experience better
code locality, reducing the jumps between TCP and MPTCP code.
v1 -> v2:
- rebased on current '-net' tree
Fixes: 648ef4b88673 ("mptcp: Implement MPTCP receive path")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 30 Apr 2020 13:01:51 +0000 (15:01 +0200)]
mptcp: consolidate synack processing.
Currently the MPTCP code uses 2 hooks to process syn-ack
packets, mptcp_rcv_synsent() and the sk_rx_dst_set()
callback.
We can drop the first, moving the relevant code into the
latter, reducing the hooking into the TCP code. This is
also needed by the next patch.
v1 -> v2:
- use local tcp sock ptr instead of casting the sk variable
several times - DaveM
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trond Myklebust [Thu, 30 Apr 2020 19:08:26 +0000 (15:08 -0400)]
NFS: Fix a race in __nfs_list_for_each_server()
The struct nfs_server gets put on the cl_superblocks list before
the server->super field has been initialised, in which case the
call to nfs_sb_active() will Oops. Add a check to ensure that
we skip such a list entry.
Fixes: 3c9e502b59fb ("NFS: Add a helper nfs_client_for_each_server()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Linus Torvalds [Thu, 30 Apr 2020 17:38:48 +0000 (10:38 -0700)]
Merge tag 'mmc-v5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
- meson-mx-sdio: Fix support for HW busy detection
- sdhci-msm: Fix support for HW busy detection
- cqhci: Fix polling loop by converting to readx_poll_timeout()
- sdhci-xenon: Fix annoying 1.8V regulator warning
- sdhci-pci: Fix eMMC driver strength for BYT-based controllers
* tag 'mmc-v5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci: Fix eMMC driver strength for BYT-based controllers
mmc: sdhci-xenon: fix annoying 1.8V regulator warning
mmc: sdhci-msm: Enable host capabilities pertains to R1b response
mmc: cqhci: Avoid false "cqhci: CQE stuck on" by not open-coding timeout loop
mmc: meson-mx-sdio: remove the broken ->card_busy() op
mmc: meson-mx-sdio: Set MMC_CAP_WAIT_WHILE_BUSY
mmc: core: make mmc_interrupt_hpi() static
Vincenzo Frascino [Wed, 29 Apr 2020 15:10:50 +0000 (16:10 +0100)]
arm64: vdso: Add -fasynchronous-unwind-tables to cflags
On arm64 linux gcc uses -fasynchronous-unwind-tables -funwind-tables
by default since gcc-8, so now the de facto platform ABI is to allow
unwinding from async signal handlers.
However on bare metal targets (aarch64-none-elf), and on old gcc,
async and sync unwind tables are not enabled by default to avoid
runtime memory costs.
This means if linux is built with a baremetal toolchain the vdso.so
may not have unwind tables which breaks the gcc platform ABI guarantee
in userspace.
Add -fasynchronous-unwind-tables explicitly to the vgettimeofday.o
cflags to address the ABI change.
Fixes: 28b1a824a4f4 ("arm64: vdso: Substitute gettimeofday() with C implementation")
Cc: Will Deacon <will@kernel.org>
Reported-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Christoph Hellwig [Tue, 28 Apr 2020 08:52:03 +0000 (10:52 +0200)]
block: remove the bd_openers checks in blk_drop_partitions
When replacing the bd_super check with a bd_openers I followed a logical
conclusion, which turns out to be utterly wrong. When a block device has
bd_super sets it has a mount file system on it (although not every
mounted file system sets bd_super), but that also implies it doesn't even
have partitions to start with.
So instead of trying to come up with a logical check for all openers,
just remove the check entirely.
Fixes: d3ef5536274f ("block: fix busy device checking in blk_drop_partitions")
Fixes: cb6b771b05c3 ("block: fix busy device checking in blk_drop_partitions again")
Reported-by: Michal Koutný <mkoutny@suse.com>
Reported-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Roi Dayan [Thu, 23 Apr 2020 09:37:21 +0000 (12:37 +0300)]
net/mlx5e: Fix q counters on uplink representors
Need to allocate the q counters before init_rx which needs them
when creating the rq.
Fixes: 8520fa57a4e9 ("net/mlx5e: Create q counters on uplink representors")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Moshe Shemesh [Sun, 23 Feb 2020 01:27:41 +0000 (03:27 +0200)]
net/mlx5: Fix command entry leak in Internal Error State
Processing commands by cmd_work_handler() while already in Internal
Error State will result in entry leak, since the handler process force
completion without doorbell. Forced completion doesn't release the entry
and event completion will never arrive, so entry should be released.
Fixes: 73dd3a4839c1 ("net/mlx5: Avoid using pending command interface slots")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Moshe Shemesh [Sun, 21 Jul 2019 05:40:13 +0000 (08:40 +0300)]
net/mlx5: Fix forced completion access non initialized command entry
mlx5_cmd_flush() will trigger forced completions to all valid command
entries. Triggered by an asynch event such as fast teardown it can
happen at any stage of the command, including command initialization.
It will trigger forced completion and that can lead to completion on an
uninitialized command entry.
Setting MLX5_CMD_ENT_STATE_PENDING_COMP only after command entry is
initialized will ensure force completion is treated only if command
entry is initialized.
Fixes: 73dd3a4839c1 ("net/mlx5: Avoid using pending command interface slots")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Erez Shitrit [Wed, 25 Mar 2020 15:19:43 +0000 (17:19 +0200)]
net/mlx5: DR, On creation set CQ's arm_db member to right value
In polling mode, set arm_db member to a value that will avoid CQ
event recovery by the HW.
Otherwise we might get event without completion function.
In addition,empty completion function to was added to protect from
unexpected events.
Fixes: 297cccebdc5a ("net/mlx5: DR, Expose an internal API to issue RDMA operations")
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Parav Pandit [Tue, 21 Apr 2020 10:36:07 +0000 (05:36 -0500)]
net/mlx5: E-switch, Fix mutex init order
In cited patch mutex is initialized after its used.
Below call trace is observed.
Fix the order to initialize the mutex early enough.
Similarly follow mirror sequence during cleanup.
kernel: DEBUG_LOCKS_WARN_ON(lock->magic != lock)
kernel: WARNING: CPU: 5 PID: 45916 at kernel/locking/mutex.c:938
__mutex_lock+0x7d6/0x8a0
kernel: Call Trace:
kernel: ? esw_vport_tbl_get+0x3b/0x250 [mlx5_core]
kernel: ? mark_held_locks+0x55/0x70
kernel: ? __slab_free+0x274/0x400
kernel: ? lockdep_hardirqs_on+0x140/0x1d0
kernel: esw_vport_tbl_get+0x3b/0x250 [mlx5_core]
kernel: ? mlx5_esw_chains_create_fdb_prio+0xa57/0xc20 [mlx5_core]
kernel: mlx5_esw_vport_tbl_get+0x88/0xf0 [mlx5_core]
kernel: mlx5_esw_chains_create+0x2f3/0x3e0 [mlx5_core]
kernel: esw_create_offloads_fdb_tables+0x11d/0x580 [mlx5_core]
kernel: esw_offloads_enable+0x26d/0x540 [mlx5_core]
kernel: mlx5_eswitch_enable_locked+0x155/0x860 [mlx5_core]
kernel: mlx5_devlink_eswitch_mode_set+0x1af/0x320 [mlx5_core]
kernel: devlink_nl_cmd_eswitch_set_doit+0x41/0xb0
Fixes: 96e326878fa5 ("net/mlx5e: Eswitch, Use per vport tables for mirroring")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Parav Pandit [Mon, 20 Apr 2020 09:32:48 +0000 (04:32 -0500)]
net/mlx5: E-switch, Fix printing wrong error value
When mlx5_modify_header_alloc() fails, instead of printing the error
value returned, current error log prints 0.
Fix by printing correct error value returned by
mlx5_modify_header_alloc().
Fixes: 6724e66b90ee ("net/mlx5: E-Switch, Get reg_c1 value on miss")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Parav Pandit [Mon, 20 Apr 2020 09:20:41 +0000 (04:20 -0500)]
net/mlx5: E-switch, Fix error unwinding flow for steering init failure
Error unwinding is done incorrectly in the cited commit.
When steering init fails, there is no need to perform steering cleanup.
When vport error exists, error cleanup should be mirror of the setup
routine, i.e. to perform steering cleanup before metadata cleanup.
This avoids the call trace in accessing uninitialized objects which are
skipped during steering_init() due to failure in steering_init().
Call trace:
mlx5_cmd_modify_header_alloc:805:(pid 21128): too many modify header
actions 1, max supported 0
E-Switch: Failed to create restore mod header
BUG: kernel NULL pointer dereference, address:
00000000000000d0
[ 677.263079] mlx5_destroy_flow_group+0x13/0x80 [mlx5_core]
[ 677.268921] esw_offloads_steering_cleanup+0x51/0xf0 [mlx5_core]
[ 677.275281] esw_offloads_enable+0x1a5/0x800 [mlx5_core]
[ 677.280949] mlx5_eswitch_enable_locked+0x155/0x860 [mlx5_core]
[ 677.287227] mlx5_devlink_eswitch_mode_set+0x1af/0x320
[ 677.293741] devlink_nl_cmd_eswitch_set_doit+0x41/0xb0
[ 677.299217] genl_rcv_msg+0x1eb/0x430
Fixes: 7983a675ba65 ("net/mlx5: E-Switch, Enable chains only if regs loopback is enabled")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Jens Axboe [Thu, 30 Apr 2020 15:32:48 +0000 (09:32 -0600)]
Merge branch 'nvme-5.7' of git://git.infradead.org/nvme into block-5.7
Pull NVMe fix from Christoph.
* 'nvme-5.7' of git://git.infradead.org/nvme:
nvme: prevent double free in nvme_alloc_ns() error handling
Ritesh Harjani [Thu, 30 Apr 2020 14:57:46 +0000 (07:57 -0700)]
fibmap: Warn and return an error in case of block > INT_MAX
We better warn the fibmap user and not return a truncated and therefore
an incorrect block map address if the bmap() returned block address
is greater than INT_MAX (since user supplied integer pointer).
It's better to pr_warn() all user of ioctl_fibmap() and return a proper
error code rather than silently letting a FS corruption happen if the
user tries to fiddle around with the returned block map address.
We fix this by returning an error code of -ERANGE and returning 0 as the
block mapping address in case if it is > INT_MAX.
Now iomap_bmap() could be called from either of these two paths.
Either when a user is calling an ioctl_fibmap() interface to get
the block mapping address or by some filesystem via use of bmap()
internal kernel API.
bmap() kernel API is well equipped with handling of u64 addresses.
WARN condition in iomap_bmap_actor() was mainly added to warn all
the fibmap users. But now that we have directly added this warning
for all fibmap users and also made sure to return 0 as block map address
in case if addr > INT_MAX.
So we can now remove this logic from iomap_bmap_actor().
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Wei Yongjun [Thu, 30 Apr 2020 08:18:51 +0000 (08:18 +0000)]
bpf: Fix error return code in map_lookup_and_delete_elem()
Fix to return negative error code -EFAULT from the copy_to_user() error
handling case instead of 0, as done elsewhere in this function.
Fixes: bd513cd08f10 ("bpf: add MAP_LOOKUP_AND_DELETE_ELEM syscall")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200430081851.166996-1-weiyongjun1@huawei.com
Randy Dunlap [Wed, 8 Apr 2020 04:20:34 +0000 (21:20 -0700)]
dma-buf: fix documentation build warnings
Fix documentation warnings in dma-buf.[hc]:
../drivers/dma-buf/dma-buf.c:678: warning: Function parameter or member 'importer_ops' not described in 'dma_buf_dynamic_attach'
../drivers/dma-buf/dma-buf.c:678: warning: Function parameter or member 'importer_priv' not described in 'dma_buf_dynamic_attach'
../include/linux/dma-buf.h:339: warning: Incorrect use of kernel-doc format: * @move_notify
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linaro-mm-sig@lists.linaro.org
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/7bcbe6fe-0b4b-87da-d003-b68a26eb4cf0@infradead.org
ryan_chen [Wed, 29 Apr 2020 03:37:37 +0000 (11:37 +0800)]
i2c: aspeed: Avoid i2c interrupt status clear race condition.
In AST2600 there have a slow peripheral bus between CPU and i2c
controller. Therefore GIC i2c interrupt status clear have delay timing,
when CPU issue write clear i2c controller interrupt status. To avoid
this issue, the driver need have read after write clear at i2c ISR.
Fixes: f327c686d3ba ("i2c: aspeed: added driver for Aspeed I2C")
Signed-off-by: ryan_chen <ryan_chen@aspeedtech.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[wsa: added Fixes tag]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Dan Carpenter [Tue, 10 Sep 2019 13:42:42 +0000 (16:42 +0300)]
i2c: amd-mp2-pci: Fix Oops in amd_mp2_pci_init() error handling
The problem is that we dereference "privdata->pci_dev" when we print
the error messages in amd_mp2_pci_init():
dev_err(ndev_dev(privdata), "Failed to enable MP2 PCI device\n");
^^^^^^^^^^^^^^^^^
Fixes: 529766e0a011 ("i2c: Add drivers for the AMD PCIe MP2 I2C controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
Takashi Iwai [Thu, 30 Apr 2020 12:47:55 +0000 (14:47 +0200)]
ALSA: usb-audio: Correct a typo of NuPrime DAC-10 USB ID
The USB vendor ID of NuPrime DAC-10 is not 16b0 but 16d0.
Fixes: f656891c6619 ("ALSA: usb-audio: add more quirks for DSD interfaces")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200430124755.15940-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Arnd Bergmann [Wed, 29 Apr 2020 13:27:32 +0000 (15:27 +0200)]
btrfs: fix gcc-4.8 build warning for struct initializer
Some older compilers like gcc-4.8 warn about mismatched curly braces in
a initializer:
fs/btrfs/backref.c: In function 'is_shared_data_backref':
fs/btrfs/backref.c:394:9: error: missing braces around
initializer [-Werror=missing-braces]
struct prelim_ref target = {0};
^
fs/btrfs/backref.c:394:9: error: (near initialization for
'target.rbnode') [-Werror=missing-braces]
Use the GNU empty initializer extension to avoid this.
Fixes: ed58f2e66e84 ("btrfs: backref, don't add refs from shared block when resolving normal backref")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Arnd Bergmann [Wed, 29 Apr 2020 19:02:03 +0000 (21:02 +0200)]
ALSA: opti9xx: shut up gcc-10 range warning
gcc-10 points out a few instances of suspicious integer arithmetic
leading to value truncation:
sound/isa/opti9xx/opti92x-ad1848.c: In function 'snd_opti9xx_configure':
sound/isa/opti9xx/opti92x-ad1848.c:322:43: error: overflow in conversion from 'int' to 'unsigned char' changes value from '(int)snd_opti9xx_read(chip, 3) & -256 | 240' to '240' [-Werror=overflow]
322 | (snd_opti9xx_read(chip, reg) & ~(mask)) | ((value) & (mask)))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
sound/isa/opti9xx/opti92x-ad1848.c:351:3: note: in expansion of macro 'snd_opti9xx_write_mask'
351 | snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff);
| ^~~~~~~~~~~~~~~~~~~~~~
sound/isa/opti9xx/miro.c: In function 'snd_miro_configure':
sound/isa/opti9xx/miro.c:873:40: error: overflow in conversion from 'int' to 'unsigned char' changes value from '(int)snd_miro_read(chip, 3) & -256 | 240' to '240' [-Werror=overflow]
873 | (snd_miro_read(chip, reg) & ~(mask)) | ((value) & (mask)))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
sound/isa/opti9xx/miro.c:1010:3: note: in expansion of macro 'snd_miro_write_mask'
1010 | snd_miro_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff);
| ^~~~~~~~~~~~~~~~~~~
These are all harmless here as only the low 8 bit are passed down
anyway. Change the macros to inline functions to make the code
more readable and also avoid the warning.
Strictly speaking those functions also need locking to make the
read/write pair atomic, but it seems unlikely that anyone would
still run into that issue.
Fixes: 1841f613fd2e ("[ALSA] Add snd-miro driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200429190216.85919-1-arnd@arndb.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Jason A. Donenfeld [Wed, 22 Apr 2020 23:18:54 +0000 (17:18 -0600)]
crypto: arch/nhpoly1305 - process in explicit 4k chunks
Rather than chunking via PAGE_SIZE, this commit changes the arch
implementations to chunk in explicit 4k parts, so that calculations on
maximum acceptable latency don't suddenly become invalid on platforms
where PAGE_SIZE isn't 4k, such as arm64.
Fixes: 0f961f9f670e ("crypto: x86/nhpoly1305 - add AVX2 accelerated NHPoly1305")
Fixes: 012c82388c03 ("crypto: x86/nhpoly1305 - add SSE2 accelerated NHPoly1305")
Fixes: a00fa0c88774 ("crypto: arm64/nhpoly1305 - add NEON-accelerated NHPoly1305")
Fixes: 16aae3595a9d ("crypto: arm/nhpoly1305 - add NEON-accelerated NHPoly1305")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jason A. Donenfeld [Wed, 22 Apr 2020 23:18:53 +0000 (17:18 -0600)]
crypto: arch/lib - limit simd usage to 4k chunks
The initial Zinc patchset, after some mailing list discussion, contained
code to ensure that kernel_fpu_enable would not be kept on for more than
a 4k chunk, since it disables preemption. The choice of 4k isn't totally
scientific, but it's not a bad guess either, and it's what's used in
both the x86 poly1305, blake2s, and nhpoly1305 code already (in the form
of PAGE_SIZE, which this commit corrects to be explicitly 4k for the
former two).
Ard did some back of the envelope calculations and found that
at 5 cycles/byte (overestimate) on a 1ghz processor (pretty slow), 4k
means we have a maximum preemption disabling of 20us, which Sebastian
confirmed was probably a good limit.
Unfortunately the chunking appears to have been left out of the final
patchset that added the glue code. So, this commit adds it back in.
Fixes: 84e03fa39fbe ("crypto: x86/chacha - expose SIMD ChaCha routine as library function")
Fixes: b3aad5bad26a ("crypto: arm64/chacha - expose arm64 ChaCha routine as library function")
Fixes: a44a3430d71b ("crypto: arm/chacha - expose ARM ChaCha routine as library function")
Fixes: d7d7b8535662 ("crypto: x86/poly1305 - wire up faster implementations for kernel")
Fixes: f569ca164751 ("crypto: arm64/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation")
Fixes: a6b803b3ddc7 ("crypto: arm/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation")
Fixes: ed0356eda153 ("crypto: blake2s - x86_64 SIMD implementation")
Cc: Eric Biggers <ebiggers@google.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
David S. Miller [Wed, 29 Apr 2020 21:23:05 +0000 (14:23 -0700)]
Merge branch 'wireguard-fixes'
Jason A. Donenfeld says:
====================
wireguard fixes for 5.7-rc4
This series contains two fixes and a cleanup for wireguard:
1) Removal of a spurious newline, from Sultan Alsawaf.
2) Fix for a memory leak in an error path, in which memory allocated
prior to the error wasn't freed, reported by Sultan Alsawaf.
3) Fix to ECN support to use RFC6040 properly like all the other tunnel
drivers, from Toke Høiland-Jørgensen.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Toke Høiland-Jørgensen [Wed, 29 Apr 2020 20:59:22 +0000 (14:59 -0600)]
wireguard: receive: use tunnel helpers for decapsulating ECN markings
WireGuard currently only propagates ECN markings on tunnel decap according
to the old RFC3168 specification. However, the spec has since been updated
in RFC6040 to recommend slightly different decapsulation semantics. This
was implemented in the kernel as a set of common helpers for ECN
decapsulation, so let's just switch over WireGuard to using those, so it
can benefit from this enhancement and any future tweaks. We do not drop
packets with invalid ECN marking combinations, because WireGuard is
frequently used to work around broken ISPs, which could be doing that.
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Reported-by: Olivier Tilmans <olivier.tilmans@nokia-bell-labs.com>
Cc: Dave Taht <dave.taht@gmail.com>
Cc: Rodney W. Grimes <ietf@gndrsh.dnsmgr.net>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason A. Donenfeld [Wed, 29 Apr 2020 20:59:21 +0000 (14:59 -0600)]
wireguard: queueing: cleanup ptr_ring in error path of packet_queue_init
Prior, if the alloc_percpu of packet_percpu_multicore_worker_alloc
failed, the previously allocated ptr_ring wouldn't be freed. This commit
adds the missing call to ptr_ring_cleanup in the error case.
Reported-by: Sultan Alsawaf <sultan@kerneltoast.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sultan Alsawaf [Wed, 29 Apr 2020 20:59:20 +0000 (14:59 -0600)]
wireguard: send: remove errant newline from packet_encrypt_worker
This commit removes a useless newline at the end of a scope, which
doesn't add anything in the way of organization or readability.
Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gwendal Grignou [Mon, 27 Apr 2020 22:59:02 +0000 (15:59 -0700)]
platform/chrome: cros_ec_sensorhub: Allocate sensorhub resource before claiming sensors
Allocate callbacks array before enumerating the sensors: The probe routine
for these sensors (for instance cros_ec_sensors_probe) can be called
within the sensorhub probe routine (cros_ec_sensors_probe())
Fixes: 145d59baff594 ("platform/chrome: cros_ec_sensorhub: Add FIFO support")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reported-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Arnd Bergmann [Tue, 28 Apr 2020 21:30:17 +0000 (23:30 +0200)]
HID: mcp2221: add gpiolib dependency
Without gpiolib, this driver fails to link:
arm-linux-gnueabi-ld: drivers/hid/hid-mcp2221.o: in function `mcp2221_probe':
hid-mcp2221.c:(.text+0x1b0): undefined reference to `devm_gpiochip_add_data'
arm-linux-gnueabi-ld: drivers/hid/hid-mcp2221.o: in function `mcp_gpio_get':
hid-mcp2221.c:(.text+0x30c): undefined reference to `gpiochip_get_data'
Fixes: 328de1c519c5 ("HID: mcp2221: add GPIO functionality support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Rishi Gupta <gupt21@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Daniel Playfair Cal [Sat, 25 Apr 2020 10:58:17 +0000 (20:58 +1000)]
HID: i2c-hid: reset Synaptics SYNA2393 on resume
On the Dell XPS 9570, the Synaptics SYNA2393 touchpad generates spurious
interrupts after resuming from suspend until it receives some input or
is reset. Add it to the quirk I2C_HID_QUIRK_RESET_ON_RESUME so that it
is reset when resuming from suspend.
More information about the bug can be found in this mailing list
discussion: https://www.spinics.net/lists/linux-input/msg59530.html
Signed-off-by: Daniel Playfair Cal <daniel.playfair.cal@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Jason Gerecke [Fri, 24 Apr 2020 21:04:00 +0000 (14:04 -0700)]
HID: wacom: Report 2nd-gen Intuos Pro S center button status over BT
The state of the center button was not reported to userspace for the
2nd-gen Intuos Pro S when used over Bluetooth due to the pad handling
code not being updated to support its reduced number of buttons. This
patch uses the actual number of buttons present on the tablet to
assemble a button state bitmap.
Link: https://github.com/linuxwacom/xf86-input-wacom/issues/112
Fixes: cd47de45b855 ("HID: wacom: Add 2nd gen Intuos Pro Small support")
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Florian Westphal [Wed, 29 Apr 2020 18:43:20 +0000 (20:43 +0200)]
mptcp: replace mptcp_disconnect with a stub
Paolo points out that mptcp_disconnect is bogus:
"lock_sock(sk);
looks suspicious (lock should be already held by the caller)
And call to: tcp_disconnect(sk, flags); too, sk is not a tcp
socket".
->disconnect() gets called from e.g. inet_stream_connect when
one tries to disassociate a connected socket again (to re-connect
without closing the socket first).
MPTCP however uses mptcp_stream_connect, not inet_stream_connect,
for the mptcp-socket connect call.
inet_stream_connect only gets called indirectly, for the tcp socket,
so any ->disconnect() calls end up calling tcp_disconnect for that
tcp subflow sk.
This also explains why syzkaller has not yet reported a problem
here. So for now replace this with a stub that doesn't do anything.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/14
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Wed, 29 Apr 2020 19:00:41 +0000 (21:00 +0200)]
netfilter: nf_osf: avoid passing pointer to local var
gcc-10 points out that a code path exists where a pointer to a stack
variable may be passed back to the caller:
net/netfilter/nfnetlink_osf.c: In function 'nf_osf_hdr_ctx_init':
cc1: warning: function may return address of local variable [-Wreturn-local-addr]
net/netfilter/nfnetlink_osf.c:171:16: note: declared here
171 | struct tcphdr _tcph;
| ^~~~~
I am not sure whether this can happen in practice, but moving the
variable declaration into the callers avoids the problem.
Fixes: 31a9c29210e2 ("netfilter: nf_osf: add struct nf_osf_hdr_ctx")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Jason Yan [Wed, 29 Apr 2020 14:10:01 +0000 (22:10 +0800)]
net: dsa: mv88e6xxx: remove duplicate assignment of struct members
These struct members named 'phylink_validate' was assigned twice:
static const struct mv88e6xxx_ops mv88e6190_ops = {
......
.phylink_validate = mv88e6390_phylink_validate,
......
.phylink_validate = mv88e6390_phylink_validate,
};
static const struct mv88e6xxx_ops mv88e6190x_ops = {
......
.phylink_validate = mv88e6390_phylink_validate,
......
.phylink_validate = mv88e6390x_phylink_validate,
};
static const struct mv88e6xxx_ops mv88e6191_ops = {
......
.phylink_validate = mv88e6390_phylink_validate,
......
.phylink_validate = mv88e6390_phylink_validate,
};
static const struct mv88e6xxx_ops mv88e6290_ops = {
......
.phylink_validate = mv88e6390_phylink_validate,
......
.phylink_validate = mv88e6390_phylink_validate,
};
Remove all the first one and leave the second one which are been used in
fact. Be aware that for 'mv88e6190x_ops' the assignment functions is
different while the others are all the same. This fixes the following
coccicheck warning:
drivers/net/dsa/mv88e6xxx/chip.c:3911:48-49: phylink_validate: first
occurrence line 3965, second occurrence line 3967
drivers/net/dsa/mv88e6xxx/chip.c:3970:49-50: phylink_validate: first
occurrence line 4024, second occurrence line 4026
drivers/net/dsa/mv88e6xxx/chip.c:4029:48-49: phylink_validate: first
occurrence line 4082, second occurrence line 4085
drivers/net/dsa/mv88e6xxx/chip.c:4184:48-49: phylink_validate: first
occurrence line 4238, second occurrence line 4242
Fixes: 4262c38dc42e ("net: dsa: mv88e6xxx: Add SERDES stats counters to all 6390 family members")
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 29 Apr 2020 16:25:32 +0000 (09:25 -0700)]
Merge tag 'riscv-for-linus-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"A handful of fixes.
Specifically:
- fix linker argument to allow linking with lld
- build fix for configurations without a frame pointer
- a handful of build fixes related the SBI 0.1 vs 0.2 split
- remove STRICT_KERNEL_RWX for !MMU, which isn't useful"
* tag 'riscv-for-linus-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: select ARCH_HAS_STRICT_KERNEL_RWX only if MMU
riscv: sbi: Fix undefined reference to sbi_shutdown
tty: riscv: Using RISCV_SBI_V01 instead of RISCV_SBI
riscv: sbi: Correct sbi_shutdown() and sbi_clear_ipi() export
riscv: fix vdso build with lld
RISC-V: stacktrace: Declare sp_in_global outside ifdef
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