That's one line (the assignment line) that is 2,686,974 characters in
length.
Now, sparse does happen to react particularly badly to that (I didn't
look to why, but I suspect it's just that evaluating all the types
that don't actually ever end up getting used ends up being much more
expensive than it should be), but I bet it's not good for gcc either.
Jakub Sitnicki [Thu, 6 Feb 2020 11:16:52 +0000 (12:16 +0100)]
selftests/bpf: Test freeing sockmap/sockhash with a socket in it
Commit 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear
down") introduced sleeping issues inside RCU critical sections and while
holding a spinlock on sockmap/sockhash tear-down. There has to be at least
one socket in the map for the problem to surface.
This adds a test that triggers the warnings for broken locking rules. Not a
fix per se, but rather tooling to verify the accompanying fixes. Run on a
VM with 1 vCPU to reproduce the warnings.
Jakub Sitnicki [Thu, 6 Feb 2020 11:16:51 +0000 (12:16 +0100)]
bpf, sockhash: Synchronize_rcu before free'ing map
We need to have a synchronize_rcu before free'ing the sockhash because any
outstanding psock references will have a pointer to the map and when they
use it, this could trigger a use after free.
This is a sister fix for sockhash, following commit 2bb90e5cc90e ("bpf:
sockmap, synchronize_rcu before free'ing map") which addressed sockmap,
which comes from a manual audit.
Jakub Sitnicki [Thu, 6 Feb 2020 11:16:50 +0000 (12:16 +0100)]
bpf, sockmap: Don't sleep while holding RCU lock on tear-down
rcu_read_lock is needed to protect access to psock inside sock_map_unref
when tearing down the map. However, we can't afford to sleep in lock_sock
while in RCU read-side critical section. Grab the RCU lock only after we
have locked the socket.
This fixes RCU warnings triggerable on a VM with 1 vCPU when free'ing a
sockmap/sockhash that contains at least one socket:
bpftool: Don't crash on missing xlated program instructions
Turns out the xlated program instructions can also be missing if
kptr_restrict sysctl is set. This means that the previous fix to check the
jited_prog_insns pointer was insufficient; add another check of the
xlated_prog_insns pointer as well.
Lorenz Bauer [Fri, 7 Feb 2020 10:37:12 +0000 (10:37 +0000)]
bpf, sockmap: Check update requirements after locking
It's currently possible to insert sockets in unexpected states into
a sockmap, due to a TOCTTOU when updating the map from a syscall.
sock_map_update_elem checks that sk->sk_state == TCP_ESTABLISHED,
locks the socket and then calls sock_map_update_common. At this
point, the socket may have transitioned into another state, and
the earlier assumptions don't hold anymore. Crucially, it's
conceivable (though very unlikely) that a socket has become unhashed.
This breaks the sockmap's assumption that it will get a callback
via sk->sk_prot->unhash.
Fix this by checking the (fixed) sk_type and sk_protocol without the
lock, followed by a locked check of sk_state.
Unfortunately it's not possible to push the check down into
sock_(map|hash)_update_common, since BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB
run before the socket has transitioned from TCP_SYN_RECV into
TCP_ESTABLISHED.
Linus Torvalds [Fri, 7 Feb 2020 21:03:10 +0000 (13:03 -0800)]
Merge tag 'docs-5.6-2' of git://git.lwn.net/linux
Pull Documentation fixes from Jonathan Corbet:
"A handful of small documentation fixes that wandered in"
* tag 'docs-5.6-2' of git://git.lwn.net/linux:
Allow git builds of Sphinx
Documentation: changes.rst: update several outdated project URLs
Documentation: build warnings related to missing blank lines after explicit markups has been fixed
mailmap: add entry for Tiezhu Yang
Documentation/ko_KR/howto: Update a broken link
Documentation/ko_KR/howto: Update broken web addresses
docs/locking: Fix outdated section names
Linus Torvalds [Fri, 7 Feb 2020 20:51:54 +0000 (12:51 -0800)]
Merge tag 'acpi-5.6-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"Add Hisilicon Hip08-Lite I2C controller clock frequency support to the
ACPI driver for AMD SoCs (APD) and to the Designware I2C driver
(Hanjun Guo)"
* tag 'acpi-5.6-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
i2c: designware: Add ACPI HID for Hisilicon Hip08-Lite I2C controller
ACPI / APD: Add clock frequency for Hisilicon Hip08-Lite I2C controller
Linus Torvalds [Fri, 7 Feb 2020 20:49:10 +0000 (12:49 -0800)]
Merge tag 'pm-5.6-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
- Update the recently merged CPR (Core Power Reduction) support in the
AVS (Adaptive Voltage Scaling) subsystem (Brendan Higgins, Nathan
Chancellor, Niklas Cassel)
- Update the rockchip-io AVS driver (Heiko Stuebner)
- Add two more module parameters to intel_idle on top of the recently
merged material (Rafael Wysocki)
- Clean up a piece of cpuidle documentation and consolidate system
sleep states documentation (Rafael Wysocki)
* tag 'pm-5.6-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: Documentation: Clean up PM QoS description
Documentation: admin-guide: PM: Update sleep states documentation
intel_idle: Introduce 'states_off' module parameter
intel_idle: Introduce 'use_acpi' module parameter
power: avs: qcom-cpr: Avoid clang -Wsometimes-uninitialized in cpr_scale
power: avs: qcom-cpr: add unspecified HAS_IOMEM dependency
PM / AVS: rockchip-io: fix the supply naming for the emmc supply on px30
power: avs: qcom-cpr: add a printout after the driver has been initialized
Linus Torvalds [Fri, 7 Feb 2020 20:46:08 +0000 (12:46 -0800)]
Merge tag 'drm-next-2020-02-07' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Just some fixes for this merge window: the tegra changes fix some
regressions in the merge, nouveau has a few modesetting fixes.
The amdgpu fixes are bit bigger, but they contain a couple of weeks of
fixes, and don't seem to contain anything that isn't really a fix.
Summary:
tegra:
- merge window regression fixes
nouveau:
- couple of volta/turing modesetting fixes
amdgpu:
- EDC fixes for Arcturus
- GDDR6 memory training fixe
- Fix for reading gfx clockgating registers while in GFXOFF state
- i2c freq fixes
- Misc display fixes
- TLB invalidation fix when using semaphores
- VCN 2.5 instancing fixes
- Switch raven1 gfxoff to a blacklist
- Coreboot workaround for KV/KB
- Root cause dongle fixes for display and revert workaround
- Enable GPU reset for renoir and navi
- Navi overclocking fixes
- Fix up confusing warnings in display clock validation on raven
amdkfd:
- SDMA fix
radeon:
- Misc LUT fixes"
* tag 'drm-next-2020-02-07' of git://anongit.freedesktop.org/drm/drm: (90 commits)
gpu: host1x: Set DMA direction only for DMA-mapped buffer objects
drm/tegra: Reuse IOVA mapping where possible
drm/tegra: Relax IOMMU usage criteria on old Tegra
drm/amd/dm/mst: Ignore payload update failures
drm/amdgpu: update default voltage for boot od table for navi1x
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_latency
drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2)
drm/amdgpu: fetch default VDDC curve voltages (v2)
drm/amdgpu/smu_v11_0: Correct behavior of restoring default tables (v2)
drm/amdgpu/navi10: add OD_RANGE for navi overclocking
drm/amdgpu/navi: fix index for OD MCLK
drm/amd/display: Fix HW/SW state mismatch
drm/amd/display: Fix a typo when computing dsc configuration
drm/amd/powerplay: fix navi10 system intermittent reboot issue V2
drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode
drm/amd/display: Only enable cursor on pipes that need it
drm/nouveau/kms/gv100-: avoid sending a core update until the first modeset
drm/nouveau/kms/gv100-: move window ownership setup into modesetting path
drm/nouveau/disp/gv100-: halt NV_PDISP_FE_RM_INTR_STAT_CTRL_DISP_ERROR storms
...
- Fix the ls1028a driver to not deref a pointer before assigning it"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
of: clk: Make <linux/of_clk.h> self-contained
clk: qcom: Use ARRAY_SIZE in videocc-sc7180 for parent clocks
clk: qcom: Get rid of the test clock for videocc-sc7180
dt-bindings: clock: Cleanup qcom,videocc bindings for sdm845/sc7180
clk: qcom: Use ARRAY_SIZE in gpucc-sc7180 for parent clocks
clk: qcom: Get rid of the test clock for gpucc-sc7180
dt-bindings: clock: Fix qcom,gpucc bindings for sdm845/sc7180/msm8998
clk: qcom: Use ARRAY_SIZE in dispcc-sc7180 for parent clocks
clk: qcom: Get rid of the test clock for dispcc-sc7180
clk: qcom: Get rid of fallback global names for dispcc-sc7180
dt-bindings: clock: Fix qcom,dispcc bindings for sdm845/sc7180
clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
clk: ls1028a: fix a dereference of pointer 'parent' before a null check
dt-bindings: clk: qcom: Fix self-validation, split, and clean cruft
clk: qcom: Don't overwrite 'cfg' in clk_rcg2_dfs_populate_freq()
Stephen Boyd [Thu, 6 Feb 2020 19:15:21 +0000 (11:15 -0800)]
genirq: Clarify that irq wake state is orthogonal to enable/disable
There's some confusion around if an irq that's disabled with disable_irq()
can still wake the system from sleep states such as "suspend to RAM".
Clarify this in the kernel documentation for irq_set_irq_wake() so that
it's clear that an irq can be disabled and still wake the system if it has
been marked for wakeup.
Linus Torvalds [Fri, 7 Feb 2020 20:26:34 +0000 (12:26 -0800)]
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:
"Some bug fixes/cleanups.
The deprecated scsi passthrough for virtio_blk is removed"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_balloon: Fix memory leaks on errors in virtballoon_probe()
virtio-balloon: Fix memory leak when unloading while hinting is in progress
virtio_balloon: prevent pfn array overflow
virtio-blk: remove VIRTIO_BLK_F_SCSI support
virtio-pci: check name when counting MSI-X vectors
virtio-balloon: initialize all vq callbacks
virtio-mmio: convert to devm_platform_ioremap_resource
Linus Torvalds [Fri, 7 Feb 2020 20:22:29 +0000 (12:22 -0800)]
Merge tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa
Pull xtensa updates from Max Filippov:
- reorganize exception vectors placement
- small cleanups (drop unused functions/headers/defconfig entries,
spelling fixes)
* tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: ISS: improve simcall assembly
xtensa: reorganize vectors placement
xtensa: separate SMP and XIP support
xtensa: move fast exception handlers close to vectors
arch/xtensa: fix Kconfig typos for HAVE_SMP
xtensa: clean up optional XCHAL_* definitions
xtensa: drop unused function fast_coprocessor_double
xtensa: drop empty platform_* functions from platforms
xtensa: clean up platform headers
xtensa: drop set_except_vector declaration
xtensa: configs: Cleanup old Kconfig IO scheduler options
Al Viro [Wed, 18 Dec 2019 01:03:59 +0000 (20:03 -0500)]
fs_parse: handle optional arguments sanely
Don't bother with "mixed" options that would allow both the
form with and without argument (i.e. both -o foo and -o foo=bar).
Rather than trying to shove both into a single fs_parameter_spec,
allow having with-argument and no-argument specs with the same
name and teach fs_parse to handle that.
There are very few options of that sort, and they are actually
easier to handle that way - callers end up with less postprocessing.
Al Viro [Sat, 21 Dec 2019 05:16:49 +0000 (00:16 -0500)]
add prefix to fs_context->log
... turning it into struct p_log embedded into fs_context. Initialize
the prefix with fs_type->name, turning fs_parse() into a trivial
inline wrapper for __fs_parse().
This makes fs_parameter_description->name completely unused.
Al Viro [Wed, 18 Dec 2019 01:09:08 +0000 (20:09 -0500)]
get rid of fs_value_is_filename_empty
Its behaviour is identical to that of fs_value_is_filename.
It makes no sense, anyway - LOOKUP_EMPTY affects nothing
whatsoever once the pathname has been imported from userland.
And both fs_value_is_filename and fs_value_is_filename_empty
carry an already imported pathname.
Al Viro [Mon, 16 Dec 2019 18:45:41 +0000 (13:45 -0500)]
don't bother with explicit length argument for __lookup_constant()
Have the arrays of constant_table self-terminated (by NULL ->name
in the final entry). Simplifies lookup_constant() and allows to
reuse the search for enum params as well.
When upcalling gssproxy, cache_head.expiry_time is set as a
timeval, not seconds since boot. As such, RPC cache expiry
logic will not clean expired objects created under
auth.rpcsec.context cache.
This has proven to cause kernel memory leaks on field. Using
64 bit variants of getboottime/timespec
Expiration times have worked this way since 2010's c5b29f885afe "sunrpc:
use seconds since boot in expiry cache". The gssproxy code introduced
in 2012 added gss_proxy_save_rsc and introduced the bug. That's a while
for this to lurk, but it required a bit of an extreme case to make it
obvious.
Ido Schimmel [Fri, 7 Feb 2020 17:29:28 +0000 (19:29 +0200)]
drop_monitor: Do not cancel uninitialized work item
Drop monitor uses a work item that takes care of constructing and
sending netlink notifications to user space. In case drop monitor never
started to monitor, then the work item is uninitialized and not
associated with a function.
Therefore, a stop command from user space results in canceling an
uninitialized work item which leads to the following warning [1].
Fix this by not processing a stop command if drop monitor is not
currently monitoring.
David S. Miller [Fri, 7 Feb 2020 17:47:01 +0000 (18:47 +0100)]
Merge branch 'mlxsw-Various-fixes'
Ido Schimmel says:
====================
mlxsw: Various fixes
This patch set contains various fixes for the mlxsw driver.
Patch #1 fixes an issue introduced in 5.6 in which a route in the main
table can replace an identical route in the local table despite the
local table having an higher precedence.
Patch #2 contains a test case for the bug fixed in patch #1.
Patch #3 also fixes an issue introduced in 5.6 in which the driver
failed to clear the offload indication from IPv6 nexthops upon abort.
Patch #4 fixes an issue that prevents the driver from loading on
Spectrum-3 systems. The problem and solution are explained in detail in
the commit message.
Patch #5 adds a missing error path. Discovered using smatch.
====================
Ido Schimmel [Fri, 7 Feb 2020 17:26:28 +0000 (19:26 +0200)]
mlxsw: spectrum_dpipe: Add missing error path
In case devlink_dpipe_entry_ctx_prepare() failed, release RTNL that was
previously taken and free the memory allocated by
mlxsw_sp_erif_entry_prepare().
Fixes: 2ba5999f009d ("mlxsw: spectrum: Add Support for erif table entries access") Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Vadim Pasternak [Fri, 7 Feb 2020 17:26:27 +0000 (19:26 +0200)]
mlxsw: core: Add validation of hardware device types for MGPIR register
When reading the number of gearboxes from the hardware, the driver does
not validate the returned 'device type' field. The driver can therefore
wrongly assume that the queried devices are gearboxes.
On Spectrum-3 systems that support different types of devices, this can
prevent the driver from loading, as it will try to query the
temperature sensors from devices which it assumes are gearboxes and in
fact are not.
For example:
[ 218.129230] mlxsw_minimal 2-0048: Reg cmd access status failed (status=7(bad parameter))
[ 218.138282] mlxsw_minimal 2-0048: Reg cmd access failed (reg_id=900a(mtmp),type=write)
[ 218.147131] mlxsw_minimal 2-0048: Failed to setup temp sensor number 256
[ 218.534480] mlxsw_minimal 2-0048: Fail to register core bus
[ 218.540714] mlxsw_minimal: probe of 2-0048 failed with error -5
Fix this by validating the 'device type' field.
Fixes: 2e265a8b6c094 ("mlxsw: core: Extend hwmon interface with inter-connect temperature attributes") Fixes: f14f4e621b1b4 ("mlxsw: core: Extend thermal core with per inter-connect device thermal zones") Signed-off-by: Vadim Pasternak <[email protected]> Acked-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Ido Schimmel [Fri, 7 Feb 2020 17:26:26 +0000 (19:26 +0200)]
mlxsw: spectrum_router: Clear offload indication from IPv6 nexthops on abort
Unlike IPv4, in IPv6 there is no unique structure to represent the
nexthop and both the route and nexthop information are squashed to the
same structure ('struct fib6_info'). In order to improve resource
utilization the driver consolidates identical nexthop groups to the same
internal representation of a nexthop group.
Therefore, when the offload indication of a nexthop changes, the driver
needs to iterate over all the linked fib6_info and toggle their offload
flag accordingly.
During abort, all the routes are removed from the device and unlinked
from their nexthop group. The offload indication is cleared just before
the group is destroyed, but by that time no fib6_info is linked to the
group and the offload indication remains set.
Fix this by clearing the offload indication just before dropping the
reference from the nexthop.
Ido Schimmel [Fri, 7 Feb 2020 17:26:25 +0000 (19:26 +0200)]
selftests: mlxsw: Add test cases for local table route replacement
Test that routes in the main table do not replace identical routes in
the local table and that routes in the local table do replace identical
routes in the main table.
Ido Schimmel [Fri, 7 Feb 2020 17:26:24 +0000 (19:26 +0200)]
mlxsw: spectrum_router: Prevent incorrect replacement of local table routes
The driver uses the same table to represent both the main and local
routing tables. Prevent routes in the main table from replacing routes
in the local table to reflect the fact that the local table is consulted
first during lookup.
Fixes: b6a1d871d37a ("mlxsw: spectrum_router: Start using new IPv4 route notifications") Fixes: dacad7b34b59 ("mlxsw: spectrum_router: Start using new IPv6 route notifications") Signed-off-by: Ido Schimmel <[email protected]> Acked-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Eric Dumazet [Fri, 7 Feb 2020 15:16:37 +0000 (07:16 -0800)]
ipv6/addrconf: fix potential NULL deref in inet6_set_link_af()
__in6_dev_get(dev) called from inet6_set_link_af() can return NULL.
The needed check has been recently removed, let's add it back.
While do_setlink() does call validate_linkmsg() :
...
err = validate_linkmsg(dev, tb); /* OK at this point */
...
It is possible that the following call happening before the
->set_link_af() removes IPv6 if MTU is less than 1280 :
if (tb[IFLA_MTU]) {
err = dev_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack);
if (err < 0)
goto errout;
status |= DO_SETLINK_MODIFIED;
}
...
if (tb[IFLA_AF_SPEC]) {
...
err = af_ops->set_link_af(dev, af);
->inet6_set_link_af() // CRASH because idev is NULL
Please note that IPv4 is immune to the bug since inet_set_link_af() does :
struct in_device *in_dev = __in_dev_get_rcu(dev);
if (!in_dev)
return -EAFNOSUPPORT;
This problem has been mentioned in commit cf7afbfeb8ce ("rtnl: make
link af-specific updates atomic") changelog :
This method is not fail proof, while it is currently sufficient
to make set_link_af() inerrable and thus 100% atomic, the
validation function method will not be able to detect all error
scenarios in the future, there will likely always be errors
depending on states which are f.e. not protected by rtnl_mutex
and thus may change between validation and setting.
smp/up: Make smp_call_function_single() match SMP semantics
In CONFIG_SMP=y kernels, smp_call_function_single() returns -ENXIO when
invoked for a non-existent CPU. In contrast, in CONFIG_SMP=n kernels,
a splat is emitted and smp_call_function_single() otherwise silently
ignores its "cpu" argument, instead pretending that the caller intended
to have something happen on CPU 0. Given that there is now code that
expects smp_call_function_single() to return an error if a bad CPU was
specified, this difference in semantics needs to be addressed.
Bring the semantics of the CONFIG_SMP=n version of
smp_call_function_single() into alignment with its CONFIG_SMP=y
counterpart.
Tony W Wang-oc [Wed, 15 Jan 2020 08:22:19 +0000 (16:22 +0800)]
x86/apic: Mask IOAPIC entries when disabling the local APIC
When a system suspends, the local APIC is disabled in the suspend sequence,
but the IOAPIC is left in the current state. This means unmasked interrupt
lines stay unmasked. This is usually the case for IOAPIC pin 9 to which the
ACPI interrupt is connected.
That means that in suspended state the IOAPIC can respond to an external
interrupt, e.g. the wakeup via keyboard/RTC/ACPI, but the interrupt message
cannot be handled by the disabled local APIC. As a consequence the Remote
IRR bit is set, but the local APIC does not send an EOI to acknowledge
it. This causes the affected interrupt line to become stale and the stale
Remote IRR bit will cause a hang when __synchronize_hardirq() is invoked
for that interrupt line.
To prevent this, mask all IOAPIC entries before disabling the local
APIC. The resume code already has the unmask operation inside.
Madalin Bucur [Tue, 4 Feb 2020 10:08:58 +0000 (12:08 +0200)]
dpaa_eth: support all modes with rate adapting PHYs
Stop removing modes that are not supported on the system interface
when the connected PHY is capable of rate adaptation. This addresses
an issue with the LS1046ARDB board 10G interface no longer working
with an 1G link partner after autonegotiation support was added
for the Aquantia PHY on board in
commit 09c4c57f7bc4 ("net: phy: aquantia: add support for auto-negotiation configuration")
Before this commit the values advertised by the PHY were not
influenced by the dpaa_eth driver removal of system-side unsupported
modes as the aqr_config_aneg() was basically a no-op. After this
commit, the modes removed by the dpaa_eth driver were no longer
advertised thus autonegotiation with 1G link partners failed.
David S. Miller [Fri, 7 Feb 2020 10:36:22 +0000 (11:36 +0100)]
Merge branch 'stmmac-fixes'
Ong Boon Leong says:
====================
net: stmmac: general fixes for Ethernet functionality
1/5: It ensures that the previous value of GMAC_VLAN_TAG register is
read first before for updating the register.
2/5: Similar to 2/6 patch but it is a fix for XGMAC_VLAN_TAG register
as requested by Jose Abreu.
3/5: It ensures the GMAC IP v4.xx and above behaves correctly to:-
ip link set <devname> multicast off|on
4/5: Added similar IFF_MULTICAST flag for xgmac2, similar to 4/6.
5/5: It ensures PCI platform data is using plat->phy_interface.
Changes from v4:-
patch 1/6 - this patch is dropped now and will take the input on
handling return value from netif_set_real_num_rx|
tx_queues() in future patch series.
v3:-
patch 1/6 - add rtnl_lock() and rtnl_unlock() for stmmac_hw_setup()
called inside stmmac_resume()
patch 3/6 - Added new patch to fix XGMAC_VLAN_TAG register writting
v2:-
patch 1/5 - added control for rtnl_lock() & rtnl_unlock() to ensure
they are used forstmmac_resume()
patch 4/5 - added IFF_MULTICAST flag check for xgmac to ensure
multicast works correctly.
v1:-
- Drop v1 patches (1/7, 3/7 & 4/7) that are not valid.
====================
Voon Weifeng [Fri, 7 Feb 2020 07:34:28 +0000 (15:34 +0800)]
net: stmmac: update pci platform data to use phy_interface
The recent patch to support passive mode converter did not take care the
phy interface configuration in PCI platform data. Hence, converting all
the PCI platform data from plat->interface to plat->phy_interface as the
default mode is meant for PHY.
Fixes: 0060c8783330 ("net: stmmac: implement support for passive mode converters via dt") Signed-off-by: Voon Weifeng <[email protected]> Tested-by: Tan, Tee Min <[email protected]> Signed-off-by: Ong Boon Leong <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Tan, Tee Min [Fri, 7 Feb 2020 07:34:15 +0000 (15:34 +0800)]
net: stmmac: xgmac: fix missing IFF_MULTICAST checki in dwxgmac2_set_filter
Without checking for IFF_MULTICAST flag, it is wrong to assume multicast
filtering is always enabled. By checking against IFF_MULTICAST, now
the driver behaves correctly when the multicast support is toggled by below
command:-
ip link set <devname> multicast off|on
Fixes: 0efedbf11f07a ("net: stmmac: xgmac: Fix XGMAC selftests") Signed-off-by: Tan, Tee Min <[email protected]> Signed-off-by: Ong Boon Leong <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Verma, Aashish [Fri, 7 Feb 2020 07:33:54 +0000 (15:33 +0800)]
net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
Without checking for IFF_MULTICAST flag, it is wrong to assume multicast
filtering is always enabled. By checking against IFF_MULTICAST, now
the driver behaves correctly when the multicast support is toggled by below
command:-
ip link set <devname> multicast off|on
We should always do a read of current value of XGMAC_VLAN_TAG instead of
directly overwriting the register value.
Fixes: 3cd1cfcba26e2 ("net: stmmac: Implement VLAN Hash Filtering in XGMAC") Signed-off-by: Ong Boon Leong <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Tan, Tee Min [Fri, 7 Feb 2020 07:33:20 +0000 (15:33 +0800)]
net: stmmac: fix incorrect GMAC_VLAN_TAG register writting in GMAC4+
It should always do a read of current value of GMAC_VLAN_TAG instead of
directly overwriting the register value.
Fixes: c1be0022df0d ("net: stmmac: Add VLAN HASH filtering support in GMAC4+") Signed-off-by: Tan, Tee Min <[email protected]> Signed-off-by: Ong Boon Leong <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Haiyang Zhang [Thu, 6 Feb 2020 22:01:05 +0000 (14:01 -0800)]
hv_netvsc: Fix XDP refcnt for synthetic and VF NICs
The caller of XDP_SETUP_PROG has already incremented refcnt in
__bpf_prog_get(), so drivers should only increment refcnt by
num_queues - 1.
To fix the issue, update netvsc_xdp_set() to add the correct number
to refcnt.
Hold a refcnt in netvsc_xdp_set()’s other caller, netvsc_attach().
And, do the same in netvsc_vf_setxdp(). Otherwise, every time when VF is
removed and added from the host side, the refcnt will be decreased by one,
which may cause page fault when unloading xdp program.
Fixes: 351e1581395f ("hv_netvsc: Add XDP support") Signed-off-by: Haiyang Zhang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
David S. Miller [Fri, 7 Feb 2020 10:30:03 +0000 (11:30 +0100)]
Merge branch 'taprio-Some-fixes'
Vinicius Costa Gomes says:
====================
taprio: Some fixes
Changes from v3:
- Replaced ENOTSUPP error code with EOPNOTSUPP (Jakub Kicinski);
- Added the missing policy validation for the flags netlink argument
(Jakub Kicinski);
- Fixed the destroy() flow to also destroy the priority to traffic
class mapping (David Miller);
- Fixed dropping packets when taprio offloading is used together
with ETF offloading (more on this below);
Changes from v2:
- Squashed commits 2/3 and 3/3 into a single one (I think a single
commit is going to be easier to review);
- Removed an "improvement" that was causing changes in user visible
behavior;
Changes from v1:
- Fixed ignoring the 'flags' argument when adding a new
instance (Vladimir Oltean);
- Changed the order of commits;
Updated cover letter:
One bit that might need some attention is the fix for not dropping all
packets when taprio and ETF offloading are used, patch 5/5. The
behavior when the fix is applied is that packets that have a 'txtime'
that would fall outside of their transmission window are now dropped
by taprio. The question that might be raised is: should taprio be
responsible for dropping these packets, or should it be handled lower
in the stack?
My opinion is: taprio has all the information, and it's able to give
feeback to the user. Lower in the stack, those packets might go into
the void, and the only feedback could be a hard to find counter
increasing.
Patch 1/5: Reported by Po Liu, is more of a improvement of usability for
drivers implementing offloading features, now they can rely on the
value of dev->num_tc, instead of going through some hops to get this
value.
Patch 2/5: Use 'q->flags' as the source of truth for the offloading
flags. Tries to solidify the current behavior, while avoiding going
into invalid states, one of which was causing a "rcu stall" (more
information in the commit message).
Patch 3/5: Adds the missing netlink attribute validation for
TCA_TAPRIO_ATTR_FLAGS.
Patch 4/5: Replaces the usage of netdev_set_num_tc() with
netdev_reset_tc() in taprio_destroy(), taprio_destroy() is called when
applying a configuration fails, making sure that the device traffic
class configuration goes back to the default state.
@Vladimir: If possible, I would appreciate your Ack on patch 2/5. I
have been looking at this code for so long that I might have missed
something obvious (and my growing dislike for the word 'flags' may be
affecting my judgement :-).
====================
During enqueue, it works out that the verification added for the
"txtime" assisted mode is run when using taprio + ETF offloading, the
only thing missing is initializing the 'next_txtime' of all the cycle
entries. (if we don't set 'next_txtime' all packets from SO_TXTIME
sockets are dropped)
Fixes: 4cfd5779bd6e ("taprio: Add support for txtime-assist mode") Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: David S. Miller <[email protected]>
taprio: Use taprio_reset_tc() to reset Traffic Classes configuration
When destroying the current taprio instance, which can happen when the
creation of one fails, we should reset the traffic class configuration
back to the default state.
netdev_reset_tc() is a better way because in addition to setting the
number of traffic classes to zero, it also resets the priority to
traffic classes mapping to the default value.
Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler") Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: David S. Miller <[email protected]>
netlink policy validation for the 'flags' argument was missing.
Fixes: 4cfd5779bd6e ("taprio: Add support for txtime-assist mode") Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: David S. Miller <[email protected]>
taprio: Fix still allowing changing the flags during runtime
Because 'q->flags' starts as zero, and zero is a valid value, we
aren't able to detect the transition from zero to something else
during "runtime".
The solution is to initialize 'q->flags' with an invalid value, so we
can detect if 'q->flags' was set by the user or not.
To better solidify the behavior, 'flags' handling is moved to a
separate function. The behavior is:
- 'flags' if unspecified by the user, is assumed to be zero;
- 'flags' cannot change during "runtime" (i.e. a change() request
cannot modify it);
With this new function we can remove taprio_flags, which should reduce
the risk of future accidents.
Allowing flags to be changed was causing the following RCU stall:
Fixes: 4cfd5779bd6e ("taprio: Add support for txtime-assist mode") Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: David S. Miller <[email protected]>
taprio: Fix enabling offload with wrong number of traffic classes
If the driver implementing taprio offloading depends on the value of
the network device number of traffic classes (dev->num_tc) for
whatever reason, it was going to receive the value zero. The value was
only set after the offloading function is called.
So, moving setting the number of traffic classes to before the
offloading function is called fixes this issue. This is safe because
this only happens when taprio is instantiated (we don't allow this
configuration to be changed without first removing taprio).
net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port
The 7445 switch clocking profiles do not allow us to run the IMP port at
2Gb/sec in a way that it is reliable and consistent. Make sure that the
setting is only applied to the 7278 family.
Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec") Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
net: dsa: b53: Always use dev->vlan_enabled in b53_configure_vlan()
b53_configure_vlan() is called by the bcm_sf2 driver upon setup and
indirectly through resume as well. During the initial setup, we are
guaranteed that dev->vlan_enabled is false, so there is no change in
behavior, however during suspend, we may have enabled VLANs before, so we
do want to restore that setting.
Fixes: dad8d7c6452b ("net: dsa: b53: Properly account for VLAN filtering") Fixes: 967dd82ffc52 ("net: dsa: b53: Add support for Broadcom RoboSwitch") Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Dejin Zheng [Thu, 6 Feb 2020 15:29:17 +0000 (23:29 +0800)]
net: stmmac: fix a possible endless loop
It forgot to reduce the value of the variable retry in a while loop
in the ethqos_configure() function. It may cause an endless loop and
without timeout.
Fixes: a7c30e62d4b8 ("net: stmmac: Add driver for Qualcomm ethqos") Signed-off-by: Dejin Zheng <[email protected]> Acked-by: Vinod Koul <[email protected]> Signed-off-by: David S. Miller <[email protected]>
David Howells [Thu, 6 Feb 2020 13:57:40 +0000 (13:57 +0000)]
rxrpc: Fix call RCU cleanup using non-bh-safe locks
rxrpc_rcu_destroy_call(), which is called as an RCU callback to clean up a
put call, calls rxrpc_put_connection() which, deep in its bowels, takes a
number of spinlocks in a non-BH-safe way, including rxrpc_conn_id_lock and
local->client_conns_lock. RCU callbacks, however, are normally called from
softirq context, which can cause lockdep to notice the locking
inconsistency.
To get lockdep to detect this, it's necessary to have the connection
cleaned up on the put at the end of the last of its calls, though normally
the clean up is deferred. This can be induced, however, by starting a call
on an AF_RXRPC socket and then closing the socket without reading the
reply.
Fix this by having rxrpc_rcu_destroy_call() punt the destruction to a
workqueue if in softirq-mode and defer the destruction to process context.
Note that another way to fix this could be to add a bunch of bh-disable
annotations to the spinlocks concerned - and there might be more than just
those two - but that means spending more time with BHs disabled.
Note also that some of these places were covered by bh-disable spinlocks
belonging to the rxrpc_transport object, but these got removed without the
_bh annotation being retained on the next lock in.
David Howells [Thu, 6 Feb 2020 13:55:01 +0000 (13:55 +0000)]
rxrpc: Fix service call disconnection
The recent patch that substituted a flag on an rxrpc_call for the
connection pointer being NULL as an indication that a call was disconnected
puts the set_bit in the wrong place for service calls. This is only a
problem if a call is implicitly terminated by a new call coming in on the
same connection channel instead of a terminating ACK packet.
In such a case, rxrpc_input_implicit_end_call() calls
__rxrpc_disconnect_call(), which is now (incorrectly) setting the
disconnection bit, meaning that when rxrpc_release_call() is later called,
it doesn't call rxrpc_disconnect_call() and so the call isn't removed from
the peer's error distribution list and the list gets corrupted.
KASAN finds the issue as an access after release on a call, but the
position at which it occurs is confusing as it appears to be related to a
different call (the call site is where the latter call is being removed
from the error distribution list and either the next or pprev pointer
points to a previously released call).
Fix this by moving the setting of the flag from __rxrpc_disconnect_call()
to rxrpc_disconnect_call() in the same place that the connection pointer
was being cleared.
Fixes: 5273a191dca6 ("rxrpc: Fix NULL pointer deref due to call->conn being cleared on disconnect") Signed-off-by: David Howells <[email protected]> Signed-off-by: David S. Miller <[email protected]>
* pm-avs:
power: avs: qcom-cpr: Avoid clang -Wsometimes-uninitialized in cpr_scale
power: avs: qcom-cpr: add unspecified HAS_IOMEM dependency
PM / AVS: rockchip-io: fix the supply naming for the emmc supply on px30
power: avs: qcom-cpr: add a printout after the driver has been initialized
Damien Le Moal [Wed, 25 Dec 2019 07:07:44 +0000 (16:07 +0900)]
fs: New zonefs file system
zonefs is a very simple file system exposing each zone of a zoned block
device as a file. Unlike a regular file system with zoned block device
support (e.g. f2fs), zonefs does not hide the sequential write
constraint of zoned block devices to the user. Files representing
sequential write zones of the device must be written sequentially
starting from the end of the file (append only writes).
As such, zonefs is in essence closer to a raw block device access
interface than to a full featured POSIX file system. The goal of zonefs
is to simplify the implementation of zoned block device support in
applications by replacing raw block device file accesses with a richer
file API, avoiding relying on direct block device file ioctls which may
be more obscure to developers. One example of this approach is the
implementation of LSM (log-structured merge) tree structures (such as
used in RocksDB and LevelDB) on zoned block devices by allowing SSTables
to be stored in a zone file similarly to a regular file system rather
than as a range of sectors of a zoned device. The introduction of the
higher level construct "one file is one zone" can help reducing the
amount of changes needed in the application as well as introducing
support for different application programming languages.
Zonefs on-disk metadata is reduced to an immutable super block to
persistently store a magic number and optional feature flags and
values. On mount, zonefs uses blkdev_report_zones() to obtain the device
zone configuration and populates the mount point with a static file tree
solely based on this information. E.g. file sizes come from the device
zone type and write pointer offset managed by the device itself.
The zone files created on mount have the following characteristics.
1) Files representing zones of the same type are grouped together
under a common sub-directory:
* For conventional zones, the sub-directory "cnv" is used.
* For sequential write zones, the sub-directory "seq" is used.
These two directories are the only directories that exist in zonefs.
Users cannot create other directories and cannot rename nor delete
the "cnv" and "seq" sub-directories.
2) The name of zone files is the number of the file within the zone
type sub-directory, in order of increasing zone start sector.
3) The size of conventional zone files is fixed to the device zone size.
Conventional zone files cannot be truncated.
4) The size of sequential zone files represent the file's zone write
pointer position relative to the zone start sector. Truncating these
files is allowed only down to 0, in which case, the zone is reset to
rewind the zone write pointer position to the start of the zone, or
up to the zone size, in which case the file's zone is transitioned
to the FULL state (finish zone operation).
5) All read and write operations to files are not allowed beyond the
file zone size. Any access exceeding the zone size is failed with
the -EFBIG error.
6) Creating, deleting, renaming or modifying any attribute of files and
sub-directories is not allowed.
7) There are no restrictions on the type of read and write operations
that can be issued to conventional zone files. Buffered, direct and
mmap read & write operations are accepted. For sequential zone files,
there are no restrictions on read operations, but all write
operations must be direct IO append writes. mmap write of sequential
files is not allowed.
Several optional features of zonefs can be enabled at format time.
* Conventional zone aggregation: ranges of contiguous conventional
zones can be aggregated into a single larger file instead of the
default one file per zone.
* File ownership: The owner UID and GID of zone files is by default 0
(root) but can be changed to any valid UID/GID.
* File access permissions: the default 640 access permissions can be
changed.
The mkzonefs tool is used to format zoned block devices for use with
zonefs. This tool is available on Github at:
zonefs-tools also includes a test suite which can be run against any
zoned block device, including null_blk block device created with zoned
mode.
Example: the following formats a 15TB host-managed SMR HDD with 256 MB
zones with the conventional zones aggregation feature enabled.
$ sudo mkzonefs -o aggr_cnv /dev/sdX
$ sudo mount -t zonefs /dev/sdX /mnt
$ ls -l /mnt/
total 0
dr-xr-xr-x 2 root root 1 Nov 25 13:23 cnv
dr-xr-xr-x 2 root root 55356 Nov 25 13:23 seq
The size of the zone files sub-directories indicate the number of files
existing for each type of zones. In this example, there is only one
conventional zone file (all conventional zones are aggregated under a
single file).
The "seq" sub-directory grouping files for sequential write zones has
in this example 55356 zones.
$ ls -lv /mnt/seq
total 14511243264
-rw-r----- 1 root root 0 Nov 25 13:23 0
-rw-r----- 1 root root 0 Nov 25 13:23 1
-rw-r----- 1 root root 0 Nov 25 13:23 2
...
-rw-r----- 1 root root 0 Nov 25 13:23 55354
-rw-r----- 1 root root 0 Nov 25 13:23 55355
For sequential write zone files, the file size changes as data is
appended at the end of the file, similarly to any regular file system.
$ dd if=/dev/zero of=/mnt/seq/0 bs=4K count=1 conv=notrunc oflag=direct
1+0 records in
1+0 records out
4096 bytes (4.1 kB, 4.0 KiB) copied, 0.000452219 s, 9.1 MB/s
$ ls -l /mnt/seq/0
-rw-r----- 1 root root 4096 Nov 25 13:23 /mnt/seq/0
The written file can be truncated to the zone size, preventing any
further write operation.
$ truncate -s 268435456 /mnt/seq/0
$ ls -l /mnt/seq/0
-rw-r----- 1 root root 268435456 Nov 25 13:49 /mnt/seq/0
Truncation to 0 size allows freeing the file zone storage space and
restart append-writes to the file.
$ truncate -s 0 /mnt/seq/0
$ ls -l /mnt/seq/0
-rw-r----- 1 root root 0 Nov 25 13:49 /mnt/seq/0
Since files are statically mapped to zones on the disk, the number of
blocks of a file as reported by stat() and fstat() indicates the size
of the file zone.
The number of blocks of the file ("Blocks") in units of 512B blocks
gives the maximum file size of 524288 * 512 B = 256 MB, corresponding
to the device zone size in this example. Of note is that the "IO block"
field always indicates the minimum IO size for writes and corresponds
to the device physical sector size.
Al Viro [Sat, 7 Sep 2019 02:12:08 +0000 (22:12 -0400)]
fs_parse: get rid of ->enums
Don't do a single array; attach them to fsparam_enum() entry
instead. And don't bother trying to embed the names into those -
it actually loses memory, with no real speedup worth mentioning.
Al Viro [Tue, 17 Dec 2019 19:15:04 +0000 (14:15 -0500)]
Pass consistent param->type to fs_parse()
As it is, vfs_parse_fs_string() makes "foo" and "foo=" indistinguishable;
both get fs_value_is_string for ->type and NULL for ->string. To make
it even more unpleasant, that combination is impossible to produce with
fsconfig().
Much saner rules would be
"foo" => fs_value_is_flag, NULL
"foo=" => fs_value_is_string, ""
"foo=bar" => fs_value_is_string, "bar"
All cases are distinguishable, all results are expressable by fsconfig(),
->has_value checks are much simpler that way (to the point of the field
being useless) and quite a few regressions go away (gfs2 has no business
accepting -o nodebug=, for example).
Dave Airlie [Fri, 7 Feb 2020 02:29:35 +0000 (12:29 +1000)]
Merge tag 'amd-drm-next-5.6-2020-02-05' of git://people.freedesktop.org/~agd5f/linux into drm-next
amd-drm-next-5.6-2020-02-05:
amdgpu:
- EDC fixes for Arcturus
- GDDR6 memory training fixe
- Fix for reading gfx clockgating registers while in GFXOFF state
- i2c freq fixes
- Misc display fixes
- TLB invalidation fix when using semaphores
- VCN 2.5 instancing fixes
- Switch raven1 gfxoff to a blacklist
- Coreboot workaround for KV/KB
- Root cause dongle fixes for display and revert workaround
- Enable GPU reset for renoir and navi
- Navi overclocking fixes
- Fix up confusing warnings in display clock validation on raven
Aurelien Aptel [Thu, 6 Feb 2020 17:16:55 +0000 (18:16 +0100)]
cifs: fix mode bits from dir listing when mounted with modefromsid
When mounting with -o modefromsid, the mode bits are stored in an
ACE. Directory enumeration (e.g. ls -l /mnt) triggers an SMB Query Dir
which does not include ACEs in its response. The mode bits in this
case are silently set to a default value of 755 instead.
This patch marks the dentry created during the directory enumeration
as needing re-evaluation (i.e. additional Query Info with ACEs) so
that the mode bits can be properly extracted.
Quick repro:
$ mount.cifs //win19.test/data /mnt -o ...,modefromsid
$ touch /mnt/foo && chmod 751 /mnt/foo
$ stat /mnt/foo
# reports 751 (OK)
$ sleep 2
# dentry older than 1s by default get invalidated
$ ls -l /mnt
# since dentry invalid, ls does a Query Dir
# and reports foo as 755 (WRONG)
Tariq Toukan [Thu, 9 Jan 2020 13:53:37 +0000 (15:53 +0200)]
net/mlx5e: TX, Error completion is for last WQE in batch
For a cyclic work queue, when not requesting a completion per WQE,
a single CQE might indicate the completion of several WQEs.
However, in case some WQE in the batch causes an error, then an error
completion is issued, breaking the batch, and pointing to the offending
WQE in the wqe_counter field.
Hence, WQE-specific error CQE handling (like printing, breaking, etc...)
should be performed only for the last WQE in batch.
Fixes: 130c7b46c93d ("net/mlx5e: TX, Dump WQs wqe descriptors on CQE with error events") Fixes: fd9b4be8002c ("net/mlx5e: RX, Support multiple outstanding UMR posts") Signed-off-by: Tariq Toukan <[email protected]> Reviewed-by: Aya Levin <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
Raed Salem [Wed, 23 Oct 2019 13:41:21 +0000 (16:41 +0300)]
net/mlx5: IPsec, fix memory leak at mlx5_fpga_ipsec_delete_sa_ctx
SA context is allocated at mlx5_fpga_ipsec_create_sa_ctx,
however the counterpart mlx5_fpga_ipsec_delete_sa_ctx function
nullifies sa_ctx pointer without freeing the memory allocated,
hence the memory leak.
Raed Salem [Tue, 24 Dec 2019 07:54:45 +0000 (09:54 +0200)]
net/mlx5: IPsec, Fix esp modify function attribute
The function mlx5_fpga_esp_validate_xfrm_attrs is wrongly used
with negative negation as zero value indicates success but it
used as failure return value instead.
Fix by remove the unary not negation operator.
Fixes: 05564d0ae075 ("net/mlx5: Add flow-steering commands for FPGA IPSec implementation") Signed-off-by: Raed Salem <[email protected]> Reviewed-by: Boris Pismenny <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
Aurelien Aptel [Thu, 6 Feb 2020 12:49:26 +0000 (13:49 +0100)]
cifs: fix channel signing
The server var was accidentally used as an iterator over the global
list of connections, thus overwritten the passed argument. This
resulted in the wrong signing key being returned for extra channels.
In gfs2_file_write_iter, for direct writes, the error checking in the buffered
write fallback case is incomplete. This can cause inode write errors to go
undetected. Fix and clean up gfs2_file_write_iter along the way.
Thierry Reding [Tue, 4 Feb 2020 13:59:25 +0000 (14:59 +0100)]
drm/tegra: Reuse IOVA mapping where possible
This partially reverts the DMA API support that was recently merged
because it was causing performance regressions on older Tegra devices.
Unfortunately, the cache maintenance performed by dma_map_sg() and
dma_unmap_sg() causes performance to drop by a factor of 10.
The right solution for this would be to cache mappings for buffers per
consumer device, but that's a bit involved. Instead, we simply revert to
the old behaviour of sharing IOVA mappings when we know that devices can
do so (i.e. they share the same IOMMU domain).
Thierry Reding [Tue, 4 Feb 2020 13:59:24 +0000 (14:59 +0100)]
drm/tegra: Relax IOMMU usage criteria on old Tegra
Older Tegra devices only allow addressing 32 bits of memory, so whether
or not the host1x is attached to an IOMMU doesn't matter. host1x IOMMU
attachment is only needed on devices that can address memory beyond the
32-bit boundary and where the host1x doesn't support the wide GATHER
opcode that allows it to access buffers at higher addresses.
Linus Torvalds [Thu, 6 Feb 2020 17:07:45 +0000 (09:07 -0800)]
Merge tag 'kvm-5.6-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more KVM updates from Paolo Bonzini:
"s390:
- fix register corruption
- ENOTSUPP/EOPNOTSUPP mixed
- reset cleanups/fixes
- selftests
x86:
- Bug fixes and cleanups
- AMD support for APIC virtualization even in combination with
in-kernel PIT or IOAPIC.
MIPS:
- Compilation fix.
Generic:
- Fix refcount overflow for zero page"
* tag 'kvm-5.6-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits)
KVM: vmx: delete meaningless vmx_decache_cr0_guest_bits() declaration
KVM: x86: Mark CR4.UMIP as reserved based on associated CPUID bit
x86: vmxfeatures: rename features for consistency with KVM and manual
KVM: SVM: relax conditions for allowing MSR_IA32_SPEC_CTRL accesses
KVM: x86: Fix perfctr WRMSR for running counters
x86/kvm/hyper-v: don't allow to turn on unsupported VMX controls for nested guests
x86/kvm/hyper-v: move VMX controls sanitization out of nested_enable_evmcs()
kvm: mmu: Separate generating and setting mmio ptes
kvm: mmu: Replace unsigned with unsigned int for PTE access
KVM: nVMX: Remove stale comment from nested_vmx_load_cr3()
KVM: MIPS: Fold comparecount_func() into comparecount_wakeup()
KVM: MIPS: Fix a build error due to referencing not-yet-defined function
x86/kvm: do not setup pv tlb flush when not paravirtualized
KVM: fix overflow of zero page refcount with ksm running
KVM: x86: Take a u64 when checking for a valid dr7 value
KVM: x86: use raw clock values consistently
KVM: x86: reorganize pvclock_gtod_data members
KVM: nVMX: delete meaningless nested_vmx_run() declaration
KVM: SVM: allow AVIC without split irqchip
kvm: ioapic: Lazy update IOAPIC EOI
...
Linus Torvalds [Thu, 6 Feb 2020 17:05:42 +0000 (09:05 -0800)]
Merge tag 'kgdb-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux
Pull kgdb fix from Daniel Thompson:
"One of the simplifications added for 5.6-rc1 has caused build
regressions on some platforms (it was reported for sparc64).
This fixes it with a revert"
* tag 'kgdb-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
Revert "kdb: Get rid of confusing diag msg from "rd" if current task has no regs"
Abhi Das [Tue, 4 Feb 2020 20:14:56 +0000 (14:14 -0600)]
gfs2: fix gfs2_find_jhead that returns uninitialized jhead with seq 0
When the first log header in a journal happens to have a sequence
number of 0, a bug in gfs2_find_jhead() causes it to prematurely exit,
and return an uninitialized jhead with seq 0. This can cause failures
in the caller. For instance, a mount fails in one test case.
The correct behavior is for it to continue searching through the journal
to find the correct journal head with the highest sequence number.
Dan Carpenter [Mon, 13 Jan 2020 13:23:07 +0000 (16:23 +0300)]
nfsd4: fix double free in nfsd4_do_async_copy()
This frees "copy->nf_src" before and again after the goto.
Fixes: ce0887ac96d3 ("NFSD add nfs4 inter ssc to nfsd4_copy") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Olga Kornievskaia <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
projects / linux.git / log