Linus Torvalds [Fri, 9 Feb 2024 19:13:19 +0000 (11:13 -0800)]
Merge tag 'trace-v6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix broken direct trampolines being called when another callback is
attached the same function.
ARM 64 does not support FTRACE_WITH_REGS, and when it added direct
trampoline calls from ftrace, it removed the "WITH_REGS" flag from
the ftrace_ops for direct trampolines. This broke x86 as x86 requires
direct trampolines to have WITH_REGS.
This wasn't noticed because direct trampolines work as long as the
function it is attached to is not shared with other callbacks (like
the function tracer). When there are other callbacks, a helper
trampoline is called, to call all the non direct callbacks and when
it returns, the direct trampoline is called.
For x86, the direct trampoline sets a flag in the regs field to tell
the x86 specific code to call the direct trampoline. But this only
works if the ftrace_ops had WITH_REGS set. ARM does things
differently that does not require this. For now, set WITH_REGS if the
arch supports WITH_REGS (which ARM does not), and this makes it work
for both ARM64 and x86.
- Fix wasted memory in the saved_cmdlines logic.
The saved_cmdlines is a cache that maps PIDs to COMMs that tracing
can use. Most trace events only save the PID in the event. The
saved_cmdlines file lists PIDs to COMMs so that the tracing tools can
show an actual name and not just a PID for each event. There's an
array of PIDs that map to a small set of saved COMM strings. The
array is set to PID_MAX_DEFAULT which is usually set to 32768. When a
PID comes in, it will add itself to this array along with the index
into the COMM array (note if the system allows more than
PID_MAX_DEFAULT, this cache is similar to cache lines as an update of
a PID that has the same PID_MAX_DEFAULT bits set will flush out
another task with the same matching bits set).
A while ago, the size of this cache was changed to be dynamic and the
array was moved into a structure and created with kmalloc(). But this
new structure had the size of 131104 bytes, or 0x20020 in hex. As
kmalloc allocates in powers of two, it was actually allocating
0x40000 bytes (262144) leaving 131040 bytes of wasted memory. The
last element of this structure was a pointer to the COMM string array
which defaulted to just saving 128 COMMs.
By changing the last field of this structure to a variable length
string, and just having it round up to fill the allocated memory, the
default size of the saved COMM cache is now 8190. This not only uses
the wasted space, but actually saves space by removing the extra
allocation for the COMM names.
* tag 'trace-v6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix wasted memory in saved_cmdlines logic
ftrace: Fix DIRECT_CALLS to use SAVE_REGS by default
Linus Torvalds [Fri, 9 Feb 2024 19:04:26 +0000 (11:04 -0800)]
Merge tag 'probes-fixes-v6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- remove unnecessary initial values of kprobes local variables
- probe-events parser bug fixes:
- calculate the argument size and format string after setting type
information from BTF, because BTF can change the size and format
string.
- show $comm parse error correctly instead of failing silently.
* tag 'probes-fixes-v6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobes: Remove unnecessary initial values of variables
tracing/probes: Fix to set arg size and fmt after setting type from BTF
tracing/probes: Fix to show a parse error for bad type for $comm
Linus Torvalds [Fri, 9 Feb 2024 18:40:50 +0000 (10:40 -0800)]
Merge tag 'efi-fixes-for-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
"The only notable change here is the patch that changes the way we deal
with spurious errors from the EFI memory attribute protocol. This will
be backported to v6.6, and is intended to ensure that we will not
paint ourselves into a corner when we tighten this further in order to
comply with MS requirements on signed EFI code.
Note that this protocol does not currently exist in x86 production
systems in the field, only in Microsoft's fork of OVMF, but it will be
mandatory for Windows logo certification for x86 PCs in the future.
- Tighten ELF relocation checks on the RISC-V EFI stub
- Give up if the new EFI memory attributes protocol fails spuriously
on x86
- Take care not to place the kernel in the lowest 16 MB of DRAM on
x86
- Omit special purpose EFI memory from memblock
- Some fixes for the CXL CPER reporting code
- Make the PE/COFF layout of mixed-mode capable images comply with a
strict interpretation of the spec"
* tag 'efi-fixes-for-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
x86/efistub: Use 1:1 file:memory mapping for PE/COFF .compat section
cxl/trace: Remove unnecessary memcpy's
cxl/cper: Fix errant CPER prints for CXL events
efi: Don't add memblocks for soft-reserved memory
efi: runtime: Fix potential overflow of soft-reserved region size
efi/libstub: Add one kernel-doc comment
x86/efistub: Avoid placing the kernel below LOAD_PHYSICAL_ADDR
x86/efistub: Give up if memory attribute protocol returns an error
riscv/efistub: Tighten ELF relocation check
riscv/efistub: Ensure GP-relative addressing is not used
Linus Torvalds [Fri, 9 Feb 2024 18:37:59 +0000 (10:37 -0800)]
Merge tag 'pci-v6.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Fix an unintentional truncation of DWC MSI-X address to 32 bits and
update similar MSI code to match (Dan Carpenter)
* tag 'pci-v6.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: dwc: Clean up dw_pcie_ep_raise_msi_irq() alignment
PCI: dwc: Fix a 64bit bug in dw_pcie_ep_raise_msix_irq()
MMC host:
- sdhci-pci-o2micro: Fix a warm reboot BIOS issue"
* tag 'mmc-v6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: slot-gpio: Allow non-sleeping GPIO ro
mmc: sdhci-pci-o2micro: Fix a warm reboot issue that disk can't be detected by BIOS
Linus Torvalds [Fri, 9 Feb 2024 18:29:50 +0000 (10:29 -0800)]
Merge tag 'pmdomain-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:
"Core:
- Move the unused cleanup to a _sync initcall
Providers:
- mediatek: Fix race conditions at probe/remove with genpd
- renesas: r8a77980-sysc: CR7 must be always on"
* tag 'pmdomain-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: mediatek: fix race conditions with genpd
pmdomain: renesas: r8a77980-sysc: CR7 must be always on
pmdomain: core: Move the unused cleanup to a _sync initcall
Linus Torvalds [Fri, 9 Feb 2024 18:27:56 +0000 (10:27 -0800)]
Merge tag 'gpio-fixes-for-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:
- remove the new GPIO device from the global list unconditionally in
error path in core GPIOLIB
* tag 'gpio-fixes-for-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: remove GPIO device from the list unconditionally in error path
Linus Torvalds [Fri, 9 Feb 2024 17:57:12 +0000 (09:57 -0800)]
Merge tag 'drm-fixes-2024-02-09' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular weekly fixes, xe, amdgpu and msm are most of them, with some
misc in i915, ivpu and nouveau, scattered but nothing too intense at
this point.
i915:
- gvt: docs fix, uninit var, MAINTAINERS
ivpu:
- add aborted job status
- disable d3 hot delay
- mmu fixes
nouveau:
- fix gsp rpc size request
- fix dma buffer leaks
- use common code for gsp mem ctor
xe:
- Fix a loop in an error path
- Fix a missing dma-fence reference
- Fix a retry path on userptr REMAP
- Workaround for a false gcc warning
- Fix missing map of the usm batch buffer in the migrate vm.
- Fix a memory leak.
- Fix a bad assumption of used page size
- Fix hitting a BUG() due to zero pages to map.
- Remove some leftover async bind queue relics
msm:
- DPU:
- fix for kernel doc warnings and smatch warnings in dpu_encoder
- fix for smatch warning in dpu_encoder
- fix the bus bandwidth value for SDM670
- DP:
- fixes to handle unknown bpc case correctly for DP
- fix for MISC0 programming
- GPU:
- dmabuf vmap fix
- a610 UBWC corruption fix (incorrect hbb)
- revert a commit that was making GPU recovery unreliable"
* tag 'drm-fixes-2024-02-09' of git://anongit.freedesktop.org/drm/drm: (43 commits)
drm/xe: Remove TEST_VM_ASYNC_OPS_ERROR
drm/xe/vm: don't ignore error when in_kthread
drm/xe: Assume large page size if VMA not yet bound
drm/xe/display: Fix memleak in display initialization
drm/xe: Map both mem.kernel_bb_pool and usm.bb_pool
drm/xe: circumvent bogus stringop-overflow warning
drm/xe: Pick correct userptr VMA to repin on REMAP op failure
drm/xe: Take a reference in xe_exec_queue_last_fence_get()
drm/xe: Fix loop in vm_bind_ioctl_ops_unwind
drm/amdgpu: Fix HDP flush for VFs on nbio v7.9
drm/amd/display: Implement bounds check for stream encoder creation in DCN301
drm/amd/display: Increase frame-larger-than for all display_mode_vba files
drm/amd/display: Clear phantom stream count and plane count
drm/amdgpu: Avoid fetching VRAM vendor info
drm/amd/display: Disable ODM by default for DCN35
drm/amd/display: Update phantom pipe enable / disable sequence
drm/amd/display: Fix MST Null Ptr for RV
drm/amdgpu: Fix shared buff copy to user
drm/amd/display: Increase eval/entry delay for DCN35
drm/amdgpu: remove asymmetrical irq disabling in jpeg 4.0.5 suspend
...
tracing: Fix wasted memory in saved_cmdlines logic
While looking at improving the saved_cmdlines cache I found a huge amount
of wasted memory that should be used for the cmdlines.
The tracing data saves pids during the trace. At sched switch, if a trace
occurred, it will save the comm of the task that did the trace. This is
saved in a "cache" that maps pids to comms and exposed to user space via
the /sys/kernel/tracing/saved_cmdlines file. Currently it only caches by
default 128 comms.
The structure that uses this creates an array to store the pids using
PID_MAX_DEFAULT (which is usually set to 32768). This causes the structure
to be of the size of 131104 bytes on 64 bit machines.
In hex: 131104 = 0x20020, and since the kernel allocates generic memory in
powers of two, the kernel would allocate 0x40000 or 262144 bytes to store
this structure. That leaves 131040 bytes of wasted space.
Worse, the structure points to an allocated array to store the comm names,
which is 16 bytes times the amount of names to save (currently 128), which
is 2048 bytes. Instead of allocating a separate array, make the structure
end with a variable length string and use the extra space for that.
This is similar to a recommendation that Linus had made about eventfs_inode names:
Instead of allocating a separate string array to hold the saved comms,
have the structure end with: char saved_cmdlines[]; and round up to the
next power of two over sizeof(struct saved_cmdline_buffers) + num_cmdlines * TASK_COMM_LEN
It will use this extra space for the saved_cmdline portion.
Now, instead of saving only 128 comms by default, by using this wasted
space at the end of the structure it can save over 8000 comms and even
saves space by removing the need for allocating the other array.
ftrace: Fix DIRECT_CALLS to use SAVE_REGS by default
The commit 60c8971899f3 ("ftrace: Make DIRECT_CALLS work WITH_ARGS
and !WITH_REGS") changed DIRECT_CALLS to use SAVE_ARGS when there
are multiple ftrace_ops at the same function, but since the x86 only
support to jump to direct_call from ftrace_regs_caller, when we set
the function tracer on the same target function on x86, ftrace-direct
does not work as below (this actually works on arm64.)
At first, insmod ftrace-direct.ko to put a direct_call on
'wake_up_process()'.
# insmod kernel/samples/ftrace/ftrace-direct.ko
# less trace
...
<idle>-0 [006] ..s1. 564.686958: my_direct_func: waking up rcu_preempt-17
<idle>-0 [007] ..s1. 564.687836: my_direct_func: waking up kcompactd0-63
<idle>-0 [006] ..s1. 564.690926: my_direct_func: waking up rcu_preempt-17
<idle>-0 [006] ..s1. 564.696872: my_direct_func: waking up rcu_preempt-17
<idle>-0 [007] ..s1. 565.191982: my_direct_func: waking up kcompactd0-63
Setup a function filter to the 'wake_up_process' too, and enable it.
Then, only function tracer is shown on x86.
But if you enable 'kprobe on ftrace' event (which uses SAVE_REGS flag)
on the same function, it is shown again.
Dave Airlie [Fri, 9 Feb 2024 01:32:38 +0000 (11:32 +1000)]
Merge tag 'drm-msm-fixes-2024-02-07' of https://gitlab.freedesktop.org/drm/msm into drm-fixes
Fixes for v6.8-rc4
DPU:
- fix for kernel doc warnings and smatch warnings in dpu_encoder
- fix for smatch warning in dpu_encoder
- fix the bus bandwidth value for SDM670
DP:
- fixes to handle unknown bpc case correctly for DP. The current code was
spilling over into other bits of DP configuration register, had to be
fixed to avoid the extra shifts which were causing the spill over
- fix for MISC0 programming in DP driver to program the correct
colorimetry value
GPU:
- dmabuf vmap fix
- a610 UBWC corruption fix (incorrect hbb)
- revert a commit that was making GPU recovery unreliable
Dave Airlie [Fri, 9 Feb 2024 01:12:01 +0000 (11:12 +1000)]
Merge tag 'drm-xe-fixes-2024-02-08' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
Driver Changes:
- Fix a loop in an error path
- Fix a missing dma-fence reference
- Fix a retry path on userptr REMAP
- Workaround for a false gcc warning
- Fix missing map of the usm batch buffer
in the migrate vm.
- Fix a memory leak.
- Fix a bad assumption of used page size
- Fix hitting a BUG() due to zero pages to map.
- Remove some leftover async bind queue relics
Dave Airlie [Fri, 9 Feb 2024 00:52:43 +0000 (10:52 +1000)]
Merge tag 'drm-misc-fixes-2024-02-08' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
A null pointer dereference fix for v3d, a TTM pool initialization fix,
several fixes for nouveau around register size, DMA buffer leaks and API
consistency, a multiple fixes for ivpu around MMU setup, initialization
and firmware interactions.
- af_unix: fix memory leak for dead unix_(sk)->oob_skb in GC.
- devlink: avoid potential loop in devlink_rel_nested_in_notify_work()
- iwlwifi:
- mvm: fix a battery life regression
- fix double-free bug
- mac80211: fix waiting for beacons logic
- nic: nfp: flower: prevent re-adding mac index for bonded port
Previous releases - always broken:
- rxrpc: fix generation of serial numbers to skip zero
- tipc: check the bearer type before calling tipc_udp_nl_bearer_add()
- tunnels: fix out of bounds access when building IPv6 PMTU error
- nic: hv_netvsc: register VF in netvsc_probe if NET_DEVICE_REGISTER
missed
- nic: atlantic: fix DMA mapping for PTP hwts ring
Misc:
- selftests: more fixes to deal with very slow hosts"
* tag 'net-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (80 commits)
netfilter: nft_set_pipapo: remove scratch_aligned pointer
netfilter: nft_set_pipapo: add helper to release pcpu scratch area
netfilter: nft_set_pipapo: store index in scratch maps
netfilter: nft_set_rbtree: skip end interval element from gc
netfilter: nfnetlink_queue: un-break NF_REPEAT
netfilter: nf_tables: use timestamp to check for set element timeout
netfilter: nft_ct: reject direction for ct id
netfilter: ctnetlink: fix filtering for zone 0
s390/qeth: Fix potential loss of L3-IP@ in case of network issues
netfilter: ipset: Missing gc cancellations fixed
octeontx2-af: Initialize maps.
net: ethernet: ti: cpsw: enable mac_managed_pm to fix mdio
net: ethernet: ti: cpsw_new: enable mac_managed_pm to fix mdio
netfilter: nft_set_pipapo: remove static in nft_pipapo_get()
netfilter: nft_compat: restrict match/target protocol to u16
netfilter: nft_compat: reject unused compat flag
netfilter: nft_compat: narrow down revision to unsigned 8-bits
net: intel: fix old compiler regressions
MAINTAINERS: Maintainer change for rds
selftests: cmsg_ipv6: repeat the exact packet
...
Linus Torvalds [Thu, 8 Feb 2024 23:07:06 +0000 (15:07 -0800)]
Merge tag 'pinctrl-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pinctrl fix from Linus Walleij:
"A single fix for the AMD driver which affects developer laptops, the
pinctrl/GPIO driver won't probe on some systems"
* tag 'pinctrl-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: amd: Add IRQF_ONESHOT to the interrupt request
tracing/probes: Fix to set arg size and fmt after setting type from BTF
Since the BTF type setting updates probe_arg::type, the type size
calculation and setting print-fmt should be done after that.
Without this fix, the argument size and print-fmt can be wrong.
tracing/probes: Fix to show a parse error for bad type for $comm
Fix to show a parse error for bad type (non-string) for $comm/$COMM and
immediate-string. With this fix, error_log file shows appropriate error
message as below.
[ 30.144183] trace_kprobe: error: $comm and immediate-string only accepts string type
Command: p vfs_read $comm:u32
^
[ 62.618500] trace_kprobe: error: $comm and immediate-string only accepts string type
Command: p vfs_read \"hoge":u32
^ Link: https://lore.kernel.org/all/170602215411.215583.2238016352271091852.stgit@devnote2/ Fixes: 3dd1f7f24f8c ("tracing: probeevent: Fix to make the type of $comm string") Cc: [email protected] Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
Paolo Abeni [Thu, 8 Feb 2024 11:56:39 +0000 (12:56 +0100)]
Merge tag 'nf-24-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Narrow down target/match revision to u8 in nft_compat.
2) Bail out with unused flags in nft_compat.
3) Restrict layer 4 protocol to u16 in nft_compat.
4) Remove static in pipapo get command that slipped through when
reducing set memory footprint.
5) Follow up incremental fix for the ipset performance regression,
this includes the missing gc cancellation, from Jozsef Kadlecsik.
6) Allow to filter by zone 0 in ctnetlink, do not interpret zone 0
as no filtering, from Felix Huettner.
7) Reject direction for NFT_CT_ID.
8) Use timestamp to check for set element expiration while transaction
is handled to prevent garbage collection from removing set elements
that were just added by this transaction. Packet path and netlink
dump/get path still use current time to check for expiration.
9) Restore NF_REPEAT in nfnetlink_queue, from Florian Westphal.
10) map_index needs to be percpu and per-set, not just percpu.
At this time its possible for a pipapo set to fill the all-zero part
with ones and take the 'might have bits set' as 'start-from-zero' area.
From Florian Westphal. This includes three patches:
- Change scratchpad area to a structure that provides space for a
per-set-and-cpu toggle and uses it of the percpu one.
- Add a new free helper to prepare for the next patch.
- Remove the scratch_aligned pointer and makes AVX2 implementation
use the exact same memory addresses for read/store of the matching
state.
netfilter pull request 24-02-08
* tag 'nf-24-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_set_pipapo: remove scratch_aligned pointer
netfilter: nft_set_pipapo: add helper to release pcpu scratch area
netfilter: nft_set_pipapo: store index in scratch maps
netfilter: nft_set_rbtree: skip end interval element from gc
netfilter: nfnetlink_queue: un-break NF_REPEAT
netfilter: nf_tables: use timestamp to check for set element timeout
netfilter: nft_ct: reject direction for ct id
netfilter: ctnetlink: fix filtering for zone 0
netfilter: ipset: Missing gc cancellations fixed
netfilter: nft_set_pipapo: remove static in nft_pipapo_get()
netfilter: nft_compat: restrict match/target protocol to u16
netfilter: nft_compat: reject unused compat flag
netfilter: nft_compat: narrow down revision to unsigned 8-bits
====================
netfilter: nft_set_pipapo: store index in scratch maps
Pipapo needs a scratchpad area to keep state during matching.
This state can be large and thus cannot reside on stack.
Each set preallocates percpu areas for this.
On each match stage, one scratchpad half starts with all-zero and the other
is inited to all-ones.
At the end of each stage, the half that starts with all-ones is
always zero. Before next field is tested, pointers to the two halves
are swapped, i.e. resmap pointer turns into fill pointer and vice versa.
After the last field has been processed, pipapo stashes the
index toggle in a percpu variable, with assumption that next packet
will start with the all-zero half and sets all bits in the other to 1.
This isn't reliable.
There can be multiple sets and we can't be sure that the upper
and lower half of all set scratch map is always in sync (lookups
can be conditional), so one set might have swapped, but other might
not have been queried.
Thus we need to keep the index per-set-and-cpu, just like the
scratchpad.
Note that this bug fix is incomplete, there is a related issue.
avx2 and normal implementation might use slightly different areas of the
map array space due to the avx2 alignment requirements, so
m->scratch (generic/fallback implementation) and ->scratch_aligned
(avx) may partially overlap. scratch and scratch_aligned are not distinct
objects, the latter is just the aligned address of the former.
After this change, write to scratch_align->map_index may write to
scratch->map, so this issue becomes more prominent, we can set to 1
a bit in the supposedly-all-zero area of scratch->map[].
A followup patch will remove the scratch_aligned and makes generic and
avx code use the same (aligned) area.
Its done in a separate change to ease review.
Fixes: 3c4287f62044 ("nf_tables: Add set type for arbitrary concatenation of ranges") Reviewed-by: Stefano Brivio <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
netfilter: nft_set_rbtree: skip end interval element from gc
rbtree lazy gc on insert might collect an end interval element that has
been just added in this transactions, skip end interval elements that
are not yet active.
netfilter: nf_tables: use timestamp to check for set element timeout
Add a timestamp field at the beginning of the transaction, store it
in the nftables per-netns area.
Update set backend .insert, .deactivate and sync gc path to use the
timestamp, this avoids that an element expires while control plane
transaction is still unfinished.
.lookup and .update, which are used from packet path, still use the
current time to check if the element has expired. And .get path and dump
also since this runs lockless under rcu read size lock. Then, there is
async gc which also needs to check the current time since it runs
asynchronously from a workqueue.
Fixes: c3e1b005ed1c ("netfilter: nf_tables: add set element timeout support") Signed-off-by: Pablo Neira Ayuso <[email protected]>
s390/qeth: Fix potential loss of L3-IP@ in case of network issues
Symptom:
In case of a bad cable connection (e.g. dirty optics) a fast sequence of
network DOWN-UP-DOWN-UP could happen. UP triggers recovery of the qeth
interface. In case of a second DOWN while recovery is still ongoing, it
can happen that the IP@ of a Layer3 qeth interface is lost and will not
be recovered by the second UP.
Problem:
When registration of IP addresses with Layer 3 qeth devices fails, (e.g.
because of bad address format) the respective IP address is deleted from
its hash-table in the driver. If registration fails because of a ENETDOWN
condition, the address should stay in the hashtable, so a subsequent
recovery can restore it.
3caa4af834df ("qeth: keep ip-address after LAN_OFFLINE failure")
fixes this for registration failures during normal operation, but not
during recovery.
Solution:
Keep L3-IP address in case of ENETDOWN in qeth_l3_recover_ip(). For
consistency with qeth_l3_add_ip() we also keep it in case of EADDRINUSE,
i.e. for some reason the card already/still has this address registered.
The patch fdb8e12cc2cc ("netfilter: ipset: fix performance regression
in swap operation") missed to add the calls to gc cancellations
at the error path of create operations and at module unload. Also,
because the half of the destroy operations now executed by a
function registered by call_rcu(), neither NFNL_SUBSYS_IPSET mutex
or rcu read lock is held and therefore the checking of them results
false warnings.
kmalloc_array() without __GFP_ZERO flag does not initialize
memory to zero. This causes issues. Use kcalloc() for maps and
bitmap_zalloc() for bitmaps.
Sinthu Raja [Tue, 6 Feb 2024 00:59:28 +0000 (06:29 +0530)]
net: ethernet: ti: cpsw: enable mac_managed_pm to fix mdio
The below commit introduced a WARN when phy state is not in the states:
PHY_HALTED, PHY_READY and PHY_UP.
commit 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state")
When cpsw resumes, there have port in PHY_NOLINK state, so the below
warning comes out. Set mac_managed_pm be true to tell mdio that the phy
resume/suspend is managed by the mac, to fix the following warning:
WARNING: CPU: 0 PID: 965 at drivers/net/phy/phy_device.c:326 mdio_bus_phy_resume+0x140/0x144
CPU: 0 PID: 965 Comm: sh Tainted: G O 6.1.46-g247b2535b2 #1
Hardware name: Generic AM33XX (Flattened Device Tree)
unwind_backtrace from show_stack+0x18/0x1c
show_stack from dump_stack_lvl+0x24/0x2c
dump_stack_lvl from __warn+0x84/0x15c
__warn from warn_slowpath_fmt+0x1a8/0x1c8
warn_slowpath_fmt from mdio_bus_phy_resume+0x140/0x144
mdio_bus_phy_resume from dpm_run_callback+0x3c/0x140
dpm_run_callback from device_resume+0xb8/0x2b8
device_resume from dpm_resume+0x144/0x314
dpm_resume from dpm_resume_end+0x14/0x20
dpm_resume_end from suspend_devices_and_enter+0xd0/0x924
suspend_devices_and_enter from pm_suspend+0x2e0/0x33c
pm_suspend from state_store+0x74/0xd0
state_store from kernfs_fop_write_iter+0x104/0x1ec
kernfs_fop_write_iter from vfs_write+0x1b8/0x358
vfs_write from ksys_write+0x78/0xf8
ksys_write from ret_fast_syscall+0x0/0x54
Exception stack(0xe094dfa8 to 0xe094dff0)
dfa0: 00000004005c3fb800000001005c3fb80000000400000001
dfc0: 00000004005c3fb8b6f6bba000000004000000040059edb80000000000000000
dfe0: 00000004bed918f0b6f09bd3b6e89a66
Cc: <[email protected]> # v6.0+ Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") Fixes: fba863b81604 ("net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM") Signed-off-by: Sinthu Raja <[email protected]> Signed-off-by: Paolo Abeni <[email protected]>
Sinthu Raja [Tue, 6 Feb 2024 00:59:27 +0000 (06:29 +0530)]
net: ethernet: ti: cpsw_new: enable mac_managed_pm to fix mdio
The below commit introduced a WARN when phy state is not in the states:
PHY_HALTED, PHY_READY and PHY_UP.
commit 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state")
When cpsw_new resumes, there have port in PHY_NOLINK state, so the below
warning comes out. Set mac_managed_pm be true to tell mdio that the phy
resume/suspend is managed by the mac, to fix the following warning:
WARNING: CPU: 0 PID: 965 at drivers/net/phy/phy_device.c:326 mdio_bus_phy_resume+0x140/0x144
CPU: 0 PID: 965 Comm: sh Tainted: G O 6.1.46-g247b2535b2 #1
Hardware name: Generic AM33XX (Flattened Device Tree)
unwind_backtrace from show_stack+0x18/0x1c
show_stack from dump_stack_lvl+0x24/0x2c
dump_stack_lvl from __warn+0x84/0x15c
__warn from warn_slowpath_fmt+0x1a8/0x1c8
warn_slowpath_fmt from mdio_bus_phy_resume+0x140/0x144
mdio_bus_phy_resume from dpm_run_callback+0x3c/0x140
dpm_run_callback from device_resume+0xb8/0x2b8
device_resume from dpm_resume+0x144/0x314
dpm_resume from dpm_resume_end+0x14/0x20
dpm_resume_end from suspend_devices_and_enter+0xd0/0x924
suspend_devices_and_enter from pm_suspend+0x2e0/0x33c
pm_suspend from state_store+0x74/0xd0
state_store from kernfs_fop_write_iter+0x104/0x1ec
kernfs_fop_write_iter from vfs_write+0x1b8/0x358
vfs_write from ksys_write+0x78/0xf8
ksys_write from ret_fast_syscall+0x0/0x54
Exception stack(0xe094dfa8 to 0xe094dff0)
dfa0: 00000004005c3fb800000001005c3fb80000000400000001
dfc0: 00000004005c3fb8b6f6bba000000004000000040059edb80000000000000000
dfe0: 00000004bed918f0b6f09bd3b6e89a66
Cc: <[email protected]> # v6.0+ Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") Fixes: fba863b81604 ("net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM") Signed-off-by: Sinthu Raja <[email protected]> Signed-off-by: Paolo Abeni <[email protected]>
gpio: remove GPIO device from the list unconditionally in error path
Since commit 48e1b4d369cf ("gpiolib: remove the GPIO device from the list
when it's unregistered") we remove the GPIO device entry from the global
list (used to order devices by their GPIO ranges) when unregistering the
chip, not when releasing the device. It will not happen when the last
reference is put anymore. This means, we need to remove it in error path
in gpiochip_add_data_with_key() unconditionally, without checking if the
device's .release() callback is set.
Fixes: 48e1b4d369cf ("gpiolib: remove the GPIO device from the list when it's unregistered") Signed-off-by: Bartosz Golaszewski <[email protected]>
Matthew Brost [Tue, 6 Feb 2024 04:50:10 +0000 (20:50 -0800)]
drm/xe: Remove TEST_VM_ASYNC_OPS_ERROR
TEST_VM_ASYNC_OPS_ERROR is broken and unused. Remove for now and will
pull back in a later time when it is used, fixed, and properly hidden
behind a Kconfig option. Also fixup the supported flags value.
Matthew Auld [Fri, 2 Feb 2024 17:14:36 +0000 (17:14 +0000)]
drm/xe/vm: don't ignore error when in_kthread
If GUP fails and we are in_kthread, we can have pinned = 0 and ret = 0.
If that happens we call sg_alloc_append_table_from_pages() with n_pages
= 0, which is not well behaved and can trigger:
kernel BUG at include/linux/scatterlist.h:115!
depending on if the pages array happens to be zeroed or not. Even if we
don't hit that it crashes later when trying to dma_map the returned
table.
Matthew Brost [Mon, 5 Feb 2024 23:17:14 +0000 (15:17 -0800)]
drm/xe: Assume large page size if VMA not yet bound
The calculation to determine max page size of a VMA during a REMAP
operations assumes the VMA has been bound. This assumption is not true
if the VMA is from an eariler operation in an array of binds. If a VMA
has not been bound use the maximum page size which will ensure the
previous / next REMAP operations are not incorrectly skipped.
The call to intel_power_domains_cleanup() needs to stay where it is for
now. The main issue is that while the init is called by the display
side, shared by i915 and xe, the cleanup is called by a non-shared code
path. Fixing that will be done as a separate commit.
gcc-13 warns about an array overflow that it sees but that is
prevented by the "asid % NUM_PF_QUEUE" calculation:
drivers/gpu/drm/xe/xe_gt_pagefault.c: In function 'xe_guc_pagefault_handler':
include/linux/fortify-string.h:57:33: error: writing 16 bytes into a region of size 0 [-Werror=stringop-overflow=]
include/linux/fortify-string.h:689:26: note: in expansion of macro '__fortify_memcpy_chk'
689 | #define memcpy(p, q, s) __fortify_memcpy_chk(p, q, s, \
| ^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/xe/xe_gt_pagefault.c:341:17: note: in expansion of macro 'memcpy'
341 | memcpy(pf_queue->data + pf_queue->tail, msg, len * sizeof(u32));
| ^~~~~~
drivers/gpu/drm/xe/xe_gt_types.h:102:25: note: at offset [1144, 265324] into destination object 'tile' of size 8
I found that rewriting the assignment using pointer addition rather than the
equivalent array index calculation prevents the warning, so use that instead.
I sent a bug report against gcc for the false positive warning.
Matthew Brost [Thu, 1 Feb 2024 00:48:49 +0000 (16:48 -0800)]
drm/xe: Pick correct userptr VMA to repin on REMAP op failure
A REMAP op is composed of 3 VMA's - unmap, prev map, and next map. When
op_execute fails with -EAGAIN we need to update the local VMA pointer to
the current op state and then repin the VMA if it is a userptr.
Fixes a failure seen in xe_vm.munmap-style-unbind-userptr-one-partial.
Linus Torvalds [Thu, 8 Feb 2024 06:08:37 +0000 (06:08 +0000)]
Merge tag 'percpu-for-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu fix from Dennis Zhou:
- fix riscv wrong size passed to local_flush_tlb_range_asid()
* tag 'percpu-for-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
riscv: Fix wrong size passed to local_flush_tlb_range_asid()
drm/amd/display: Implement bounds check for stream encoder creation in DCN301
'stream_enc_regs' array is an array of dcn10_stream_enc_registers
structures. The array is initialized with four elements, corresponding
to the four calls to stream_enc_regs() in the array initializer. This
means that valid indices for this array are 0, 1, 2, and 3.
The error message 'stream_enc_regs' 4 <= 5 below, is indicating that
there is an attempt to access this array with an index of 5, which is
out of bounds. This could lead to undefined behavior
Here, eng_id is used as an index to access the stream_enc_regs array. If
eng_id is 5, this would result in an out-of-bounds access on the
stream_enc_regs array.
Thus fixing Buffer overflow error in dcn301_stream_encoder_create
reported by Smatch:
drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn301/dcn301_resource.c:1011 dcn301_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 4 <= 5
drm/amd/display: Increase frame-larger-than for all display_mode_vba files
After a recent change in LLVM, allmodconfig (which has CONFIG_KCSAN=y
and CONFIG_WERROR=y enabled) has a few new instances of
-Wframe-larger-than for the mode support and system configuration
functions:
Without the sanitizers enabled, there are no warnings.
This was the catalyst for commit 6740ec97bcdb ("drm/amd/display:
Increase frame warning limit with KASAN or KCSAN in dml2") and that same
change was made to dml in commit 5b750b22530f ("drm/amd/display:
Increase frame warning limit with KASAN or KCSAN in dml") but the
frame_warn_flag variable was not applied to all files. Do so now to
clear up the warnings and make all these files consistent.
Previously we would call apply_ctx_to_hw to enable and disable
phantom pipes. However, apply_ctx_to_hw can potentially update
non-phantom pipes as well which is undesired. Instead of calling
apply_ctx_to_hw as a whole, call the relevant helpers for each
phantom pipe when enabling / disabling which will avoid us modifying
hardware state for non-phantom pipes unknowingly.
The use case is for an FRL display where FRL_Update is requested
by the display. In this case link_state_valid flag is cleared in
a passive callback thread and should be handled in the next stream /
link update. However, due to the call to apply_ctx_to_hw for the
phantom pipes during a flip, the main pipes were modified outside
of the desired sequence (driver does not handle link_state_valid = 0
on flips).
With a second DP monitor connected, drm_atomic_state in dm atomic check
sequence does not include the connector state for the old/existing/first
DP monitor. In such case, dsc determination policy would hit a null ptr
when it tries to iterate the old/existing stream that does not have a
valid connector state attached to it. When that happens, dm atomic check
should call drm_atomic_get_connector_state for a new connector state.
Existing dm has already done that, except for RV due to it does not have
official support of dsc where .num_dsc is not defined in dcn10 resource
cap, that prevent from getting drm_atomic_get_connector_state called.
So, skip dsc determination policy for ASICs that don't have DSC support.
Stanley.Yang [Mon, 5 Feb 2024 07:55:48 +0000 (15:55 +0800)]
drm/amdgpu: Fix shared buff copy to user
ta if invoke node buffer
|-------- ta type ----------|
|-------- ta id ----------|
|-------- cmd id ----------|
|------ shared buf len -----|
|------ shared buffer ------|
ta if invoke node buffer is as above, copy shared buffer data to correct location
Li Ma [Thu, 1 Feb 2024 11:31:06 +0000 (19:31 +0800)]
drm/amdgpu: remove asymmetrical irq disabling in jpeg 4.0.5 suspend
A supplement to commit: 615dd56ac5379f4239940be69139a33e79e59c67
There is an irq warning of jpeg during resume in s2idle process. No irq enabled in jpeg 4.0.5 resume.
Prike Liang [Wed, 17 Jan 2024 05:39:37 +0000 (13:39 +0800)]
drm/amdgpu: reset gpu for s3 suspend abort case
In the s3 suspend abort case some type of gfx9 power
rail not turn off from FCH side and this will put the
GPU in an unknown power status, so let's reset the gpu
to a known good power state before reinitialize gpu
device.
Prike Liang [Tue, 16 Jan 2024 11:10:45 +0000 (19:10 +0800)]
drm/amdgpu: skip to program GFXDEC registers for suspend abort
In the suspend abort cases, the gfx power rail doesn't turn off so
some GFXDEC registers/CSB can't reset to default value and at this
moment reinitialize GFXDEC/CSB will result in an unexpected error.
So let skip those program sequence for the suspend abort case.
Wenjing Liu [Thu, 18 Jan 2024 23:12:15 +0000 (18:12 -0500)]
drm/amd/display: set odm_combine_policy based on context in dcn32 resource
[why]
When populating dml pipes, odm combine policy should be assigned based
on the pipe topology of the context passed in. DML pipes could be
repopulated multiple times during single validate bandwidth attempt. We
need to make sure that whenever we repopulate the dml pipes it is always
aligned with the updated context. There is a case where DML pipes get
repopulated during FPO optimization after ODM combine policy is changed.
Since in the current code we reinitlaize ODM combine policy, even though
the current context has ODM combine enabled, we overwrite it despite the
pipes are already split. This causes DML to think that MPC combine is
used so we mistakenly enable MPC combine because we apply pipe split
with ODM combine policy reset. This issue doesn't impact non windowed
MPO with ODM case because the legacy policy has restricted use cases. We
don't encounter the case where both ODM and FPO optimizations are
enabled together. So we decide to leave it as is because it is about to
be replaced anyway.
drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'
'panel_cntl' structure used to control the display panel could be null,
dereferencing it could lead to a null pointer access.
Fixes the below:
drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed 'panel_cntl' could be null (see line 250)
netfilter: nft_compat: restrict match/target protocol to u16
xt_check_{match,target} expects u16, but NFTA_RULE_COMPAT_PROTO is u32.
NLA_POLICY_MAX(NLA_BE32, 65535) cannot be used because .max in
nla_policy is s16, see 3e48be05f3c7 ("netlink: add attribute range
validation to policy").
Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables") Signed-off-by: Pablo Neira Ayuso <[email protected]>
Dan Carpenter [Fri, 26 Jan 2024 08:41:01 +0000 (11:41 +0300)]
PCI: dwc: Clean up dw_pcie_ep_raise_msi_irq() alignment
I recently changed the alignment code in dw_pcie_ep_raise_msix_irq(). The
code in dw_pcie_ep_raise_msi_irq() is similar, so update it to match, just
for consistency. (No effect on runtime, just a cleanup).
Jakub Kicinski [Wed, 7 Feb 2024 18:34:51 +0000 (10:34 -0800)]
Merge tag 'wireless-2024-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Kalle Valo says:
====================
wireless fixes for v6.8-rc4
This time we have unusually large wireless pull request. Several
functionality fixes to both stack and iwlwifi. Lots of fixes to
warnings, especially to MODULE_DESCRIPTION().
* tag 'wireless-2024-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless: (31 commits)
wifi: mt76: mt7996: fix fortify warning
wifi: brcmfmac: Adjust n_channels usage for __counted_by
wifi: iwlwifi: do not announce EPCS support
wifi: iwlwifi: exit eSR only after the FW does
wifi: iwlwifi: mvm: fix a battery life regression
wifi: mac80211: accept broadcast probe responses on 6 GHz
wifi: mac80211: adding missing drv_mgd_complete_tx() call
wifi: mac80211: fix waiting for beacons logic
wifi: mac80211: fix unsolicited broadcast probe config
wifi: mac80211: initialize SMPS mode correctly
wifi: mac80211: fix driver debugfs for vif type change
wifi: mac80211: set station RX-NSS on reconfig
wifi: mac80211: fix RCU use in TDLS fast-xmit
wifi: mac80211: improve CSA/ECSA connection refusal
wifi: cfg80211: detect stuck ECSA element in probe resp
wifi: iwlwifi: remove extra kernel-doc
wifi: fill in MODULE_DESCRIPTION()s for mt76 drivers
wifi: fill in MODULE_DESCRIPTION()s for wilc1000
wifi: fill in MODULE_DESCRIPTION()s for wl18xx
wifi: fill in MODULE_DESCRIPTION()s for p54spi
...
====================
Linus Torvalds [Wed, 7 Feb 2024 18:06:16 +0000 (18:06 +0000)]
Merge tag 'loongarch-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
"Fix acpi_core_pic[] array overflow, fix earlycon parameter if KASAN
enabled, disable UBSAN instrumentation for vDSO build, and two Kconfig
cleanups"
* tag 'loongarch-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: vDSO: Disable UBSAN instrumentation
LoongArch: Fix earlycon parameter if KASAN enabled
LoongArch: Change acpi_core_pic[NR_CPUS] to acpi_core_pic[MAX_CORE_PIC]
LoongArch: Select HAVE_ARCH_SECCOMP to use the common SECCOMP menu
LoongArch: Select ARCH_ENABLE_THP_MIGRATION instead of redefining it
Linus Torvalds [Wed, 7 Feb 2024 17:52:16 +0000 (17:52 +0000)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"x86 guest:
- Avoid false positive for check that only matters on AMD processors
x86:
- Give a hint when Win2016 might fail to boot due to XSAVES &&
!XSAVEC configuration
- Do not allow creating an in-kernel PIT unless an IOAPIC already
exists
RISC-V:
- Allow ISA extensions that were enabled for bare metal in 6.8 (Zbc,
scalar and vector crypto, Zfh[min], Zihintntl, Zvfh[min], Zfa)
S390:
- fix CC for successful PQAP instruction
- fix a race when creating a shadow page"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
x86/coco: Define cc_vendor without CONFIG_ARCH_HAS_CC_PLATFORM
x86/kvm: Fix SEV check in sev_map_percpu_data()
KVM: x86: Give a hint when Win2016 might fail to boot due to XSAVES erratum
KVM: x86: Check irqchip mode before create PIT
KVM: riscv: selftests: Add Zfa extension to get-reg-list test
RISC-V: KVM: Allow Zfa extension for Guest/VM
KVM: riscv: selftests: Add Zvfh[min] extensions to get-reg-list test
RISC-V: KVM: Allow Zvfh[min] extensions for Guest/VM
KVM: riscv: selftests: Add Zihintntl extension to get-reg-list test
RISC-V: KVM: Allow Zihintntl extension for Guest/VM
KVM: riscv: selftests: Add Zfh[min] extensions to get-reg-list test
RISC-V: KVM: Allow Zfh[min] extensions for Guest/VM
KVM: riscv: selftests: Add vector crypto extensions to get-reg-list test
RISC-V: KVM: Allow vector crypto extensions for Guest/VM
KVM: riscv: selftests: Add scaler crypto extensions to get-reg-list test
RISC-V: KVM: Allow scalar crypto extensions for Guest/VM
KVM: riscv: selftests: Add Zbc extension to get-reg-list test
RISC-V: KVM: Allow Zbc extension for Guest/VM
KVM: s390: fix cc for successful PQAP
KVM: s390: vsie: fix race during shadow creation
The kernel build regressions/improvements email contained a couple of
issues with old compilers (in fact all the reports were on different
architectures, but all gcc 5.5) and the FIELD_PREP() and FIELD_GET()
conversions. They're all because an integer #define that should have
been declared as unsigned, was shifted to the point that it could set
the sign bit.
The fix just involves making sure the defines use the "U" identifier on
the constants to make sure they're unsigned. Should make the checkers
happier.
Confirmed with objdump before/after that there is no change to the
binaries.
Issues were reported as follows:
./drivers/net/ethernet/intel/ice/ice_base.c:238:7: note: in expansion of macro 'FIELD_GET'
(FIELD_GET(GLINT_CTL_ITR_GRAN_25_M, regval) == ICE_ITR_GRAN_US))
^
./include/linux/compiler_types.h:435:38: error: call to '__compiletime_assert_1093' declared with attribute error: FIELD_GET: mask is not constant
drivers/net/ethernet/intel/ice/ice_nvm.c:709:16: note: in expansion of macro ‘FIELD_GET’
orom->major = FIELD_GET(ICE_OROM_VER_MASK, combo_ver);
^
./include/linux/compiler_types.h:435:38: error: call to ‘__compiletime_assert_796’ declared with attribute error: FIELD_GET: mask is not constant
drivers/net/ethernet/intel/ice/ice_common.c:945:18: note: in expansion of macro ‘FIELD_GET’
u8 max_agg_bw = FIELD_GET(GL_PWR_MODE_CTL_CAR_MAX_BW_M,
^
./include/linux/compiler_types.h:435:38: error: call to ‘__compiletime_assert_420’ declared with attribute error: FIELD_GET: mask is not constant
drivers/net/ethernet/intel/i40e/i40e_dcb.c:458:8: note: in expansion of macro ‘FIELD_GET’
oui = FIELD_GET(I40E_LLDP_TLV_OUI_MASK, ouisubtype);
^
Jakub Kicinski [Sun, 4 Feb 2024 16:56:18 +0000 (08:56 -0800)]
selftests: cmsg_ipv6: repeat the exact packet
cmsg_ipv6 test requests tcpdump to capture 4 packets,
and sends until tcpdump quits. Only the first packet
is "real", however, and the rest are basic UDP packets.
So if tcpdump doesn't start in time it will miss
the real packet and only capture the UDP ones.
This makes the test fail on slow machine (no KVM or with
debug enabled) 100% of the time, while it passes in fast
environments.
Repeat the "real" / expected packet.
Fixes: 9657ad09e1fa ("selftests: net: test IPV6_TCLASS") Fixes: 05ae83d5a4a2 ("selftests: net: test IPV6_HOPLIMIT") Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Petr Tesarik [Sat, 3 Feb 2024 19:09:27 +0000 (20:09 +0100)]
net: stmmac: protect updates of 64-bit statistics counters
As explained by a comment in <linux/u64_stats_sync.h>, write side of struct
u64_stats_sync must ensure mutual exclusion, or one seqcount update could
be lost on 32-bit platforms, thus blocking readers forever. Such lockups
have been observed in real world after stmmac_xmit() on one CPU raced with
stmmac_napi_poll_tx() on another CPU.
To fix the issue without introducing a new lock, split the statics into
three parts:
1. fields updated only under the tx queue lock,
2. fields updated only during NAPI poll,
3. fields updated only from interrupt context,
Updates to fields in the first two groups are already serialized through
other locks. It is sufficient to split the existing struct u64_stats_sync
so that each group has its own.
Note that tx_set_ic_bit is updated from both contexts. Split this counter
so that each context gets its own, and calculate their sum to get the total
value in stmmac_get_ethtool_stats().
For the third group, multiple interrupts may be processed by different CPUs
at the same time, but interrupts on the same CPU will not nest. Move fields
from this group to a newly created per-cpu struct stmmac_pcpu_stats.
Linus Torvalds [Wed, 7 Feb 2024 08:21:32 +0000 (08:21 +0000)]
Merge tag 'for-6.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- two fixes preventing deletion and manual creation of subvolume qgroup
- unify error code returned for unknown send flags
- fix assertion during subvolume creation when anonymous device could
be allocated by other thread (e.g. due to backref walk)
* tag 'for-6.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: do not ASSERT() if the newly created subvolume already got read
btrfs: forbid deleting live subvol qgroup
btrfs: forbid creating subvol qgroups
btrfs: send: return EOPNOTSUPP on unknown flags
Jiri Pirko [Mon, 5 Feb 2024 17:11:14 +0000 (18:11 +0100)]
devlink: avoid potential loop in devlink_rel_nested_in_notify_work()
In case devlink_rel_nested_in_notify_work() can not take the devlink
lock mutex. Convert the work to delayed work and in case of reschedule
do it jiffie later and avoid potential looping.
This forms a self-cyclic reference that GC should finally untangle
but does not due to lack of MSG_OOB handling, resulting in memory
leak.
Recently, commit 11498715f266 ("af_unix: Remove io_uring code for
GC.") removed io_uring's dead code in GC and revealed the problem.
The code was executed at the final stage of GC and unconditionally
moved all GC candidates from gc_candidates to gc_inflight_list.
That papered over the reported problem by always making the following
WARN_ON_ONCE(!list_empty(&gc_candidates)) false.
The problem has been there since commit 2aab4b969002 ("af_unix: fix
struct pid leaks in OOB support") added full scm support for MSG_OOB
while fixing another bug.
To fix this problem, we must call kfree_skb() for unix_sk(sk)->oob_skb
if the socket still exists in gc_candidates after purging collected skb.
Then, we need to set NULL to oob_skb before calling kfree_skb() because
it calls last fput() and triggers unix_release_sock(), where we call
duplicate kfree_skb(u->oob_skb) if not NULL.
Note that the leaked socket remained being linked to a global list, so
kmemleak also could not detect it. We need to check /proc/net/protocol
to notice the unfreed socket.
Furong Xu [Sat, 3 Feb 2024 05:31:33 +0000 (13:31 +0800)]
net: stmmac: xgmac: fix a typo of register name in DPP safety handling
DDPP is copied from Synopsys Data book:
DDPP: Disable Data path Parity Protection.
When it is 0x0, Data path Parity Protection is enabled.
When it is 0x1, Data path Parity Protection is disabled.
Do not use kernel CIRC_SPACE and CIRC_CNT that
incorrectly return space of a queue when wrap bit was set.
Use correct implementation that compares producer, consumer and
wrap bit values.
Without this fix it was possible to lose events in case when event
queue was full.
Wachowski, Karol [Fri, 26 Jan 2024 12:27:58 +0000 (13:27 +0100)]
accel/ivpu: Force snooping for MMU writes
Set AW_SNOOP_OVERRIDE bit in VPU_37/40XX_HOST_IF_TCU_PTW_OVERRIDES
to force snooping for MMU write accesses (setting event queue events).
MMU event queue buffer is the only buffer written by MMU and
mapped as write-back which break cache coherency. Force write
transactions to be snooped solving the problem.
Alexander Stein [Tue, 6 Feb 2024 08:39:12 +0000 (09:39 +0100)]
mmc: slot-gpio: Allow non-sleeping GPIO ro
This change uses the appropriate _cansleep or non-sleeping API for
reading GPIO read-only state. This allows users with GPIOs that
never sleepbeing called in atomic context.
Implement the same mechanism as in commit 52af318c93e97 ("mmc: Allow
non-sleeping GPIO cd").
Dmitry Safonov [Fri, 2 Feb 2024 02:24:59 +0000 (02:24 +0000)]
selftests/net: Amend per-netns counter checks
Selftests here check not only that connect()/accept() for
TCP-AO/TCP-MD5/non-signed-TCP combinations do/don't establish
connections, but also counters: those are per-AO-key, per-socket and
per-netns.
The counters are checked on the server's side, as the server listener
has TCP-AO/TCP-MD5/no keys for different peers. All tests run in
the same namespaces with the same veth pair, created in test_init().
After close() in both client and server, the sides go through
the regular FIN/ACK + FIN/ACK sequence, which goes in the background.
If the selftest has already started a new testing scenario, read
per-netns counters - it may fail in the end iff it doesn't expect
the TCPAOGood per-netns counters go up during the test.
Let's just kill both TCP-AO sides - that will avoid any asynchronous
background TCP-AO segments going to either sides.
x86/coco: Define cc_vendor without CONFIG_ARCH_HAS_CC_PLATFORM
After commit a9ef277488cf ("x86/kvm: Fix SEV check in
sev_map_percpu_data()"), there is a build error when building
x86_64_defconfig with GCOV using LLVM:
ld.lld: error: undefined symbol: cc_vendor
>>> referenced by kvm.c
>>> arch/x86/kernel/kvm.o:(kvm_smp_prepare_boot_cpu) in archive vmlinux.a
which corresponds to
if (cc_vendor != CC_VENDOR_AMD ||
!cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
return;
Without GCOV, clang is able to eliminate the use of cc_vendor because
cc_platform_has() evaluates to false when CONFIG_ARCH_HAS_CC_PLATFORM is
not set, meaning that if statement will be true no matter what value
cc_vendor has.
With GCOV, the instrumentation keeps the use of cc_vendor around for
code coverage purposes but cc_vendor is only declared, not defined,
without CONFIG_ARCH_HAS_CC_PLATFORM, leading to the build error above.
Provide a macro definition of cc_vendor when CONFIG_ARCH_HAS_CC_PLATFORM
is not set with a value of CC_VENDOR_NONE, so that the first condition
can always be evaluated/eliminated at compile time, avoiding the build
error altogether. This is very similar to the situation prior to
commit da86eb961184 ("x86/coco: Get rid of accessor functions").
Signed-off-by: Nathan Chancellor <[email protected]> Acked-by: Borislav Petkov (AMD) <[email protected]>
Message-Id: <20240202-provide-cc_vendor-without-arch_has_cc_platform-v1-1-09ad5f2a3099@kernel.org> Fixes: a9ef277488cf ("x86/kvm: Fix SEV check in sev_map_percpu_data()", 2024-01-31) Signed-off-by: Paolo Bonzini <[email protected]>
The cause of this issue is that when tipc_nl_bearer_add() is called with
the TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called
even if the bearer is not UDP.
tipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that
the media_ptr field of the tipc_bearer has an udp_bearer type object, so
the function goes crazy for non-UDP bearers.
This patch fixes the issue by checking the bearer type before calling
tipc_udp_nl_bearer_add() in tipc_nl_bearer_add().
Linus Torvalds [Tue, 6 Feb 2024 07:38:31 +0000 (07:38 +0000)]
Merge tag 'bcachefs-2024-02-05' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"Two serious ones here that we'll want to backport to stable: a fix for
a race in the thread_with_file code, and another locking fixup in the
subvolume deletion path"
* tag 'bcachefs-2024-02-05' of https://evilpiepirate.org/git/bcachefs:
bcachefs: time_stats: Check for last_event == 0 when updating freq stats
bcachefs: install fd later to avoid race with close
bcachefs: unlock parent dir if entry is not found in subvolume deletion
bcachefs: Fix build on parisc by avoiding __multi3()
Kees Cook [Tue, 6 Feb 2024 04:32:05 +0000 (12:32 +0800)]
LoongArch: vDSO: Disable UBSAN instrumentation
The vDSO executes in userspace, so the kernel's UBSAN should not
instrument it. Solves these kind of build errors:
loongarch64-linux-ld: arch/loongarch/vdso/vgettimeofday.o: in function `vdso_shift_ns':
lib/vdso/gettimeofday.c:23:(.text+0x3f8): undefined reference to `__ubsan_handle_shift_out_of_bounds'
Huacai Chen [Tue, 6 Feb 2024 04:32:05 +0000 (12:32 +0800)]
LoongArch: Fix earlycon parameter if KASAN enabled
The earlycon parameter is based on fixmap, and fixmap addresses are not
supposed to be shadowed by KASAN. So return the kasan_early_shadow_page
in kasan_mem_to_shadow() if the input address is above FIXADDR_START.
Otherwise earlycon cannot work after kasan_init().
Huacai Chen [Tue, 6 Feb 2024 04:32:05 +0000 (12:32 +0800)]
LoongArch: Change acpi_core_pic[NR_CPUS] to acpi_core_pic[MAX_CORE_PIC]
With default config, the value of NR_CPUS is 64. When HW platform has
more then 64 cpus, system will crash on these platforms. MAX_CORE_PIC
is the maximum cpu number in MADT table (max physical number) which can
exceed the supported maximum cpu number (NR_CPUS, max logical number),
but kernel should not crash. Kernel should boot cpus with NR_CPUS, let
the remainder cpus stay in BIOS.
The potential crash reason is that the array acpi_core_pic[NR_CPUS] can
be overflowed when parsing MADT table, and it is obvious that CORE_PIC
should be corresponding to physical core rather than logical core, so it
is better to define the array as acpi_core_pic[MAX_CORE_PIC].
With the patch, system can boot up 64 vcpus with qemu parameter -smp 128,
otherwise system will crash with the following message.
Masahiro Yamada [Tue, 6 Feb 2024 04:32:05 +0000 (12:32 +0800)]
LoongArch: Select HAVE_ARCH_SECCOMP to use the common SECCOMP menu
LoongArch missed the refactoring made by commit 282a181b1a0d ("seccomp:
Move config option SECCOMP to arch/Kconfig") because LoongArch was not
mainlined at that time.
The 'depends on PROC_FS' statement is stale as described in that commit.
Select HAVE_ARCH_SECCOMP, and remove the duplicated config entry.
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