The static variable sdebug_any_injecting_opt is no longer read. Commit
3a90a63d02 ("scsi: scsi_debug: every_nth triggered error injection")
removed all code that reads this variable. Hence, also remove this
variable itself. Remove SDEBUG_OPT_ALL_INJECTING because there is no
code left that uses this constant if sdebug_any_injecting_opt is
removed. This has been detected by building the scsi_debug driver with
the git HEAD version of Clang and with W=1.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260520171454.4035623-1-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A "\n" at the end of the sdev_printk() string appears to have been
inadvertently removed. Add it back for correct log message formatting.
Fixes: a743b12022 ("scsi: scsi_debug: Stop printing extra function name in debug logs")
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260519205356.1040855-1-emilne@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add NULL check for scmd_local in the MPI2_FUNCTION_SCSI_IO_REQUEST case
to handle firmware duplicate/stale completions.
When firmware sends a duplicate completion for a command that was
already processed and returned to the pool, the driver accesses NULL
scmd pointer causing a crash.
Timeline of the bug:
1. Command completes normally, megasas_return_cmd_fusion() called
2. This sets cmd->scmd = NULL and clears io_request with memset(..., 0,
...)
3. Firmware sends duplicate/stale completion for same SMID (firmware
bug)
4. Driver processes reply descriptor again
5. Cleared io_request has Function = 0 (MPI2_FUNCTION_SCSI_IO_REQUEST)
6. Switch statement matches SCSI_IO_REQUEST case by accident
7. Accesses megasas_priv(NULL scmd)->status -> crash at offset 0x228
The offset 0x228 = sizeof(struct scsi_cmnd) 0x220 + offsetof(status)
0x8.
This issue was observed on PERC H330 Mini running firmware 25.5.9.0001
after 3+ days of heavy I/O load.
Crash signature:
BUG: unable to handle kernel NULL pointer dereference at 0x228
RIP: complete_cmd_fusion+0x428
Function: megasas_priv(cmd_fusion->scmd)->status
Add defensive check to skip processing when scmd_local is NULL. This
handles duplicate completions from firmware and prevents accessing freed
command structures. The check protects all scmd_local uses in both the
SCSI_IO path and the fallthrough LDIO path.
Signed-off-by: Milan P. Gandhi <mgandhi@redhat.com>
Link: https://patch.msgid.link/agWAgtk6rtHqNWb5@machine1
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The extremely slow boots reported July 2014 in bug 79901:
https://bugzilla.kernel.org/show_bug.cgi?id=79901
for Promise VTrak E610f 3U 16-bay FC RAID enclosure occur also with the
Promise VTrak E310f 2U 12-bay FC RAID enclosure. The 2014 patch:
https://bugzilla.kernel.org/attachment.cgi?id=144101&action=diff
added support for the BLIST_NO_RSOC flag and specified that flag for the
Promise VTrak E610f. This current patch simply adds the E310f to that
same list.
One curiosity is the additional BLIST_SPARSELUN flag. This was also in
the 2014 patch for the E610f, and was already in place for *all* Promise
devices since 2007 due to commit e0b2e597d5 ("[SCSI] stex: fix id
mapping issue") which added the line:
{"Promise", "", NULL, BLIST_SPARSELUN}
The 2007 commit message talks of issues with SuperTrak EX (stex) but the
added line did not limit itself to that particular device family. The
current patch for E310F, like the 2014 patch for E610f, adds
BLIST_NO_RSOC while preserving BLIST_SPARSELUN from 2007.
Signed-off-by: Alexander Perlis <aperlis@math.lsu.edu>
Suggested-by: Nikkos Svoboda <nsvoboda@math.lsu.edu>
Link: https://patch.msgid.link/20260512231254.27530-1-aperlis@math.lsu.edu
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use UFSHCD_QUIRK_EXTENDED_TX_EQTR_ADAPT_LENGTH_L0L1L2L3 for UFS Hosts HW
major version 0x7 & minor version 0x1.
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Ziqi Chen <ziqi.chen@oss.qualcomm.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Link: https://patch.msgid.link/20260501131641.826258-3-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add a quirk to support TX Equalization Training (EQTR) using Adapt
L0L1L2L3 length which is larger than what is allowed by M-PHY spec ver
6.0.
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Ziqi Chen <ziqi.chen@oss.qualcomm.com>
Link: https://patch.msgid.link/20260501131641.826258-2-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use strnlen() to limit string scanning to 20 characters.
Reformat the code and use tabs instead of spaces while at it.
[mkp: tweaked comment formatting]
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260517171546.2304-2-thorsten.blum@linux.dev
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While a SCSI host is in a recovery state, scsi_mq_requeue_cmd() will not
set the requeue list for a requeued command to be kicked in the future.
The expectation is a call to scsi_run_host_queues() will kick all SCSI
devices once the recovery state is cleared.
However, scsi_run_host_queues() uses shost_for_each_device() which uses
scsi_device_get() and so will ignore devices in a partially removed
state like SDEV_CANCEL. But these devices may also have requeued
requests, leaving their requests stuck from not being kicked and causing
the removal process of the device to hang.
scsi_run_host_queues() needs to run against more devices than the macro
shost_for_each_device() allows. Instead of using the too limiting
scsi_device_get() state checks, only ignore devices in SDEV_DEL state or
when unable to acquire a reference. Attempt to run the queues for all
other devices when scsi_run_host_queues() is called.
Fixes: 8b566edbdb ("scsi: core: Only kick the requeue list if necessary")
Signed-off-by: David Jeffery <djeffery@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260515180941.9698-1-djeffery@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mirror iucv_sock_setsockopt() and wrap the whole switch in
lock_sock()/release_sock(). The pre-existing SO_MSGLIMIT-only lock
becomes redundant and is removed.
Any AF_IUCV HIPER user can potentially crash the kernel by racing
recvmsg() with getsockopt(SO_MSGSIZE): the SO_MSGSIZE arm dereferences
iucv->hs_dev->mtu after iucv_sock_close() (called from the racing
recvmsg()) has set hs_dev to NULL, producing a NULL pointer dereference
oops.
Suggested-by: Stanislav Fomichev <sdf.kernel@gmail.com>
Fixes: 51363b8751 ("af_iucv: allow retrieval of maximum message size")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Tested-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20260521-af_iucv_fix2-v1-1-f16b1c510aa9@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a new test case `test_stat_delay` to `stat.sh` to verify that
`duration_time` correctly excludes the delay period when using the
delay option (-D).
The test runs `perf stat -D 1000 -e duration_time sleep 2` and
verifies that `duration_time` is ~1s (excluding the 1s delay), not
~2s.
Assisted-by: Antigravity:gemini-3-flash
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Francesco Nigro <nigro.fra@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
INIT_HLIST_HEAD(&smc_v*_hashinfo.ht) are called after smc_nl_init(),
proto_register() and sock_register(). This can lead to smc_v*_hashinfo.ht
being reset even though hash entries already exist and are being used,
possibly resulting in a corrupted list.
Remove unnecessary and dangerous re-initialisation of smc_v*_hashinfo.ht in
smc_init(); it is implicitly initialised to zero anyhow. Add
HLIST_HEAD_INIT to the definitions for clarity.
Fixes: f16a7dd5cf ("smc: netlink interface for SMC sockets")
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Link: https://patch.msgid.link/20260521145639.10317-1-wintera@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tool PMU events (duration_time, user_time, system_time) currently
count from when the event is opened to when it is read. This causes
issues with features like the delay option (-D) or control fd, where
events are opened but should not start counting immediately.
Make these events behave more like regular counters by implementing
proper enable and disable support. Add accumulated_time to struct
evsel to track time while enabled, and implement enable/disable CPU
callbacks to start/stop counting.
Also generalize userspace PMU mixed group handling. Userspace synthetic
PMUs (type > PERF_PMU_TYPE_PE_END) do not have kernel implementations and
cannot be grouped in the kernel (opened with group_fd = -1), and are
skipped by kernel enable/disable calls. Iterate over group members in
userspace and manually enable/disable any members if the leader or the
member is a non-perf-event open PMU, and synchronize their disabled flags.
Closes: https://lore.kernel.org/linux-perf-users/20260517093650.2540920-1-nigro.fra@gmail.com/
Fixes: b71f46a6a7 ("perf stat: Remove hard coded shadow metrics")
Reported-by: Francesco Nigro <nigro.fra@gmail.com>
Assisted-by: Antigravity:gemini-3-flash
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
MMC_XGMAC_RX_CRC_ERR is clear-on-read, and just a single read would
update the mmc_rx_crc_error counter.
The duplicate read appears to have been unintentionally introduced in
the intial MMC counter implementation [1]. The databook does not mention
MMC_XGMAC_RX_CRC_ERR needing the additional read.
[1] commit b6cdf09f51 ("net: stmmac: xgmac: Implement MMC counters")
Signed-off-by: Abid Ali <dev.taqnialabs@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260521-xgmac-mmc_rx_crc-cleanup-v2-1-7d9de09f5898@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We plan to no longer hold RTNL in "ip link show", and use RCU instead.
Assume rtnl_fill_dpll_pin() will have to fill DPLL_A_PIN_ID.
It is fine to over-estimate skb size (by 8 bytes) in if_nlmsg_size().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20260521171440.114956-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
rtnl_af_lookup() does not rely on RTNL anymoe, remove the stale
ASSERT_RTNL().
Add a private spinlock (rtnl_af_ops_lock) to protect rtnl_af_ops
list instead of using RTNL.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260521174038.204481-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Include examples of:
o Privilege filter with Fetch and Op PMUs, including swfilt approach on
Zen5 and older platforms and hardware assisted filter on Zen6 and newer
platforms
o Streaming store filter with Op PMU
o Fetch latency filter with Fetch PMU
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
IBS OP on Zen6 and future platform can tag IBS samples that originate from
streaming-store instruction. When the PMU advertises this feature,
interpret IBS_OP_DATA2[8] bit as the streaming store indicator and show
it in the raw dump output.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
IBS OP on Zen6 and future platform can mark a data source as coming from
a remote socket. When the PMU advertises this feature, interpret
IBS_OP_DATA2[9] bit as the Remote-Socket indicator and show it in the
raw dump output.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
On Zen6 and future platforms, IBS_FETCH_CTL status fields are valid only
if IBS_FETCH_CTL[IbsPhyAddrValid] is set. Same for IBS_FETCH_CTL_EXT.
Add these checks while decoding IBS MSRs.
Unfortunately, there is no CPUID bit to indicate the change. Fallback
to Family/Model check.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
On Zen4 (and future) CPUs, IBS_OP_DATA3[TlbRefillLat] is valid only if
IBS_OP_DATA3[DcPhyAddrValid] is set. Similarly, IBS_DC_PHYSADDR is valid
if IBS_OP_DATA3[DcLinAddrValid] is _also_ set. Add these checks while
decoding IBS MSRs.
When IBS is triggered by an unprivileged user, the kernel now zeroes
PhysAddr before storing raw IBS register values in the perf sample. The
perf tool, however, still outputs these zero physical addresses, which
serves no purpose. So avoid printing zero physical addresses.
Instead of explicit family/model checks use the !zen4_ibs_extensions as
a proxy flag to cover Zen 3 and earlier revisions.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
IBS on pre-Zen6 platforms lacked a hardware privilege filter, so the
kernel enabled swfilt=1. Zen6 and newer platforms provides privilege
filtering via the RIP[63] bit, making swfilt redundant. Skip the perf
unit test that assumes IBS has no hardware-assisted privilege filter
on Zen6 and newer platforms.
swfilt is ignored by kernel on platforms that support RIP[63] bit filter
i.e. all amd-ibs-swfilt.sh tests will test hardware assisted privilege
filter.
Without the patch on Zen6:
# sudo ./perf test -vv 77
77: AMD IBS software filtering:
--- start ---
test child forked, pid 30813
check availability of IBS swfilt
run perf record with modifier and swfilt
[FAIL] IBS PMU should not accept exclude_kernel
---- end(-1) ----
77: AMD IBS software filtering : FAILED!
With the patch:
# ./perf test -vv 77
77: AMD IBS software filtering:
--- start ---
test child forked, pid 30903
check availability of IBS swfilt
run perf record with modifier and swfilt
[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.000 MB /dev/null ]
[ perf record: Woken up 3 times to write data ]
[ perf record: Captured and wrote 0.000 MB /dev/null ]
[ perf record: Woken up 3 times to write data ]
[ perf record: Captured and wrote 0.000 MB /dev/null ]
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB /dev/null ]
check number of samples with swfilt
[ perf record: Woken up 4 times to write data ]
[ perf record: Captured and wrote 0.051 MB - ]
[ perf record: Woken up 4 times to write data ]
[ perf record: Captured and wrote 0.063 MB - ]
---- end(0) ----
77: AMD IBS software filtering : Ok
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
IBS_OP_DATA2 register will have two more fields: strm_st and rmt_socket
in Zen6 and future AMD platforms. Kernel header file is already updated.
Add those fields in tools copy as well.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
"AMD IBS sample period" unit test is getting skipped on kernel v7.x. Fix
the kernel version >= v6.15 check.
Fixes: 21fb366b2f ("perf test amd: Skip amd-ibs-period test on kernel < v6.15")
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
React to TC_SETUP_QDISC_TBF and configure the egress shaper as
appropriate with the maximum rate and burst size requested by the user.
Per queue shaper is possible, though not touched in this commit.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20260521010320.208138-4-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Drivers might have error messages to propagate to user space. Propagate
the netlink extack so that they can inform user space in a verbal way of
their limitations.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20260521010320.208138-3-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use NL_SET_ERR_MSG_WEAK so any existing error message (probably from the
underlying driver) is used instead of the generic fallback.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20260521010320.208138-2-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ethan Nelson-Moore says:
====================
ARCnet: remove outdated drivers and information and unused code; small cleanups and documentation improvements
This patch series mainly removes the ISA and PCMCIA ARCnet drivers and
documentation for them and hardware they supported. While ARCnet is still
used in industrial environments, and cards are still manufactured,
it is unlikely anyone is still using it with ISA and PCMCIA cards.
Removing these drivers reduces future maintenance burden.
While updating the ARCnet documentation to remove references to the removed
drivers, I noticed that it contained thousands of lines of outdated and
irrelevant information (much of it so outdated that it would not even work
on modern kernels). I took the opportunity to remove this information
and improve the writing style slightly.
I noticed that the BUS_ALIGN macro was always defined to 1, which meant
that the custom arcnet_in/out/read/write* I/O macros were unnecessary.
I expanded and removed them to make the code more straightforwards.
I also corrected some typos and comments.
====================
Link: https://patch.msgid.link/20260521001631.45434-1-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When compiling the com20020-pci driver with W=1, I received the
following warning:
drivers/net/arcnet/com20020-pci.c:224:71: warning: ‘%d’ directive
output may be truncated writing between 1 and 11 bytes into a region of
size between 10 and 11 [-Wformat-truncation=]
224 | snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
In reality, this does not represent a problem, because i is bounded by
the .devcount field in struct com20020_pci_card_info, which is
statically defined for each card and very small. Quiet the invalid
warning by changing the type of i and the .devcount field to be
narrower.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-8-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The ARCnet documentation contains a lot of outdated and irrelevant
information (such as changes in decades-old driver versions and
messages from a former maintainer) and has some writing style issues.
Remove this unnecessary information and improve the writing style. Also
remove links to pages that no longer exist.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-7-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that the BUS_ALIGN variable has been removed, the
arcnet_in/out/read/write* macros behave identically to the functions
they wrap. Expand them and remove their definitions to make the code
easier to maintain.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-6-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The CONFIG_SA1100_CT6001 option has never existed in the kernel. Remove
code in arcdevice.h referring to it. This allows the
arcnet_(in|out)(s|)b macros to be simplified by removing the BUS_ALIGN
macro.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-5-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
While ARCnet is still used in industrial environments, and cards are
still manufactured, it is unlikely anyone is still using it with ISA
and PCMCIA cards. Reduce future maintenance burden by removing all ISA
and PCMCIA ARCnet drivers and documentation related to them. Update
instructions for loading modules and passing parameters to work on
modern kernels and with the com20020_pci driver. Also take the
opportunity to document the rest of the module parameters, correct a
file path in Documentation/networking/arcnet.rst, and change a
reference to /etc/rc.inet1, which no longer exists, to refer to
ifconfig.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-4-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The ARCnet code contains quite a few typos in comments. Fix them.
Initially noticed by inspection, then augmented using codespell.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-3-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ARCnet does not support multicast, only unicast and broadcast. In spite
of this, the com20020 driver contains several references to multicast
in a comment and a function name, including a FIXME that it should be
implemented. Adjust the comment to make the lack of multicast support
clear and rename com20020_set_mc_list to com20020_set_rx_mode.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260521001631.45434-2-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ilya Maximets says:
====================
netlink: fixes for cross-namespace nsid reporting
While working on some new features for OVS and OVN we discovered that
self-referential NSIDs get unintentionally allocated in the system as
well as unexpectedly reported for local events on all-nsid listeners.
More details in the patches. They change user-visible behavior, but
the current behavior is arguably a bug, as it makes it hard to use
all-nsid sockets without a decent amount of extra unrelated work of
tracking when new NSIDs are allocated for your local namespace.
Tests are added to check the expected behavior and YNL is extended
to support all-nsid sockets in the tests.
====================
Link: https://patch.msgid.link/20260520172317.175168-1-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The test subscribes to link events from all namespaces and makes
sure that local events do not carry NSID in their ancillary data
(even if there is a self-referential NSID allocated for the local
namespace), and remote events do.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://patch.msgid.link/20260520172317.175168-5-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In most cases, notifications on sockets with NETLINK_LISTEN_ALL_NSID
do not contain NSID in their ancillary data in case the event is local
to the listener.
However, when a self-referential NSID is allocated for a namespace,
every local notification starts sending this ID to the user space.
This is problematic, because the listener cannot tell if those
notifications are local or not anymore without making extra requests
to figure out if the provided NSID is local or not. The listener
can also not figure out the local NSID beforehand as it can be
allocated at any point in time by other processes, changing the
structure of the future notifications for everyone.
The value is practically not useful, since it's the namespace's own
ID that the application has to obtain from other sources in order to
figure out if it's the same or not. So, for the application it's
just an extra busy work with no benefits. Moreover, applications
that do not know about this quirk may be mishandling notifications
with NSID set as notifications from remote namespaces. This is the
case for ovs-vswitchd and the iproute2's 'ip monitor' that stops
printing 'current' and starts printing the nsid number mid-session.
Lack of clear documentation for this behavior is also not helping.
A search though open-source projects doesn't reveal any projects
that use NETNSA_NSID_NOT_ASSIGNED and rely on metadata to contain
self-referential NSIDs (expected, since the value is not useful).
Quite the opposite, as already mentioned, there are few applications
that rely on NSID to not be present in local events.
Since the value is not useful and actively harmful in some cases,
let's not report it for local events, making the notifications more
consistent.
Also adding some blank lines for readability.
Fixes: 59324cf35a ("netlink: allow to listen "all" netns")
Reported-by: Matteo Perin <matteo.perin@canonical.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://patch.msgid.link/20260520172317.175168-3-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If the current skb is not shared, it is re-used directly for all the
sockets subscribed to the notification. If we have remote all-nsid
socket receiving a message first, then the 'nsid_is_set' will be
set to 'true'. If the nsid is NOT_ASSIGNED for the next socket in
the list, the 'nsid_is_set' will remain 'true' and the negative value
is be delivered to the user space. All subsequent nsid values will be
delivered as well, since there is no code path that sets the flag
back to 'false'.
Fix that by always dropping the flag to 'false' first.
Fixes: 7212462fa6 ("netlink: don't send unknown nsid")
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://patch.msgid.link/20260520172317.175168-2-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit addresses several memory management issues in builtin-kwork.c:
1. Implements a global cleanup function perf_kwork__exit to free all
kwork_work and kwork_atom_page objects at the end of the command.
2. Ensures all 'name' fields in struct kwork_work are malloc-ed (or NULL)
and properly freed by using strdup and zfree.
3. Fixes memory leaks in top_merge_tasks where kwork_work objects were
dropped without being freed.
4. Adds robustness with NULL checks for name fields.
5. Fixes workqueue_work_init to correctly resolve and strdup kernel
function names, preventing bad-free errors.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
There is a double free in the record array due to how parse_options
will mutate the array. Fix by keeping an array that isn't
mutated. Ensure kwork_usage is freed on all paths.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
A "make feature-dump" build does not specify LIBUNWIND=1 because it is
run with the default configuration to detect system-wide capabilities.
This sets NO_LIBUNWIND := 1, causing Makefile.config to skip setting
LIBUNWIND_LIBS and FEATURE_CHECK_LDFLAGS-libunwind.
Consequently, when Makefile.feature is included and attempts to run
all feature checks (via FEATURE_TESTS := all), the local feature test
test-libunwind.bin compiles without the required architecture-specific
library flags (-lunwind-x86_64) and fails to link on x86_64. This
results in a corrupted cached BUILD_TEST_FEATURE_DUMP showing
feature-libunwind=0 even when the host supports it.
Subsequent test builds (like make_libunwind_O in the build-test suite)
which reuse the feature dump and specify LIBUNWIND=1 will fail to
compile due to a mismatch where CONFIG_LIBUNWIND is set (via remote
architecture checks which are self-contained) but HAVE_LIBUNWIND_SUPPORT
is disabled, causing compiler errors due to missing maps__e_machine
definitions in maps.h.
Fix this by unconditionally setting up the libunwind library lists
and feature check LDFLAGS in Makefile.config so they are always
populated and available to the feature detection engine regardless
of whether LIBUNWIND=1 is opted-in for the current run.
Fixes: 444508cd7c ("perf build: Be more programmatic when setting up libunwind variables")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
- Spurious WARN in ops_dequeue() racing with concurrent dispatch.
- Self-deadlock between scheduler disable and a concurrent sub-sched
enable.
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Merge tag 'sched_ext-for-7.1-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
- Spurious WARN in ops_dequeue() racing with concurrent dispatch
- Self-deadlock between scheduler disable and a concurrent sub-sched
enable
* tag 'sched_ext-for-7.1-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: Fix spurious WARN on stale ops_state in ops_dequeue()
sched_ext: Fix deadlock between scx_root_disable() and concurrent forks
When x2AVIC is enabled, disable WRMSR interception only for MSRs that are
actually accelerated by hardware. Disabling interception for MSRs that
aren't accelerated is functionally "fine", and in some cases a weird "win"
for performance, but only for cases that should never be triggered by a
well-behaved VM (writes to read-only registers; the #GP will typically
occur in the guest without taking a #VMEXIT, even for fault-like exits).
But overall, disabling interception for MSRs that aren't accelerated is at
best confusing and unintuitive, and at worst introduces avoidable risk, as
the APM's documentation is imperfect and contradictory. The table in
"15.29.3.1 Virtual APIC Register Accesses" of simply states that such
writes generate exits, where as "Section 15.29.10 x2AVIC" says:
x2APIC MSR intercept checks and access checks have higher priority than
AVIC access permission checks.
CPU behavior follows the latter (which makes perfect sense), but all in
all there's simply no reason to disable interception just to make a #GP
faster.
Note, the set of MSRs that are passed through for write is identical to
VMX's set when IPI virtualization is enabled. This is not a coincidence,
and is another motiviating factor for cleaning up the intercepts, as x2AVIC
is functionally equivalent to APICv+IPIv.
Fixes: 4d1d7942e3 ("KVM: SVM: Introduce logic to (de)activate x2AVIC mode")
Cc: stable@vger.kernel.org
Reviewed-by: Naveen N Rao (AMD) <naveen@kernel.org>
Link: https://patch.msgid.link/20260514213115.1637082-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Two rstat fixes:
- Out-of-bounds access in the css_rstat_updated() BPF kfunc when called
with an unchecked user-supplied cpu.
- Over-strict NMI guard after the recent switch to try_cmpxchg left
sparc and ppc64 unable to queue rstat updates from NMI.
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Merge tag 'cgroup-for-7.1-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
"Two rstat fixes:
- Out-of-bounds access in the css_rstat_updated() BPF kfunc when
called with an unchecked user-supplied cpu
- Over-strict NMI guard after the recent switch to try_cmpxchg left
sparc and ppc64 unable to queue rstat updates from NMI"
* tag 'cgroup-for-7.1-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: rstat: relax NMI guard after switch to try_cmpxchg
cgroup/rstat: validate cpu before css_rstat_cpu() access
When toggling x2AVIC on/off, use KVM's curated mask of x2APIC MSRs that
can/should be passed through to the guest (or not) when 2AVIC is enabled.
Using the effective list provided by the local APIC emulation fixes
multiple (classes of) bugs, as the existing hand-coded list of MSRs is
wrong on multiple fronts:
- ARBPRI isn't supported by KVM, isn't accelerated by AVIC (for read or
write), and its #VMEXIT is fault-like, i.e. requires decoding the
instruction. Disabling interception is nonsensical and suboptimal.
- DFR and ICR2 aren't supported by x2APIC and so don't need their
intercepts disabled for performance reasons. While the #GP due to
x2APIC being abled has higher priority than the trap-like #VMEXIT,
disabling interception of unsupported MSRs is confusing and unnecessary.
- RRR is completely unsupported.
- AVIC currently fails to pass through the "range of vectors" registers,
IRR, ISR, and TMR, as e.g. X2APIC_MSR(APIC_IRR) only affects IRR0, and
thus only disables intercept for vectors 31:0 (which are the *least*
interesting registers).
- TMCCT (the current APIC timer count) isn't accelerated by hardware, and
generates a fault-like AVIC_UNACCELERATED_ACCESS #VMEXIT, i.e. requires
KVM to decode the instruction to figure out what the guest was trying to
access. Note, the only reason this isn't a fatal bug is that the AVIC
architecture had the foresight to guard against buggy hypervisors. E.g.
if hardware simply read from the virtual APIC page, the guest would get
garbage (because the timer is emulated in software).
Fixes: 4d1d7942e3 ("KVM: SVM: Introduce logic to (de)activate x2AVIC mode")
Cc: stable@vger.kernel.org
Reviewed-by: Naveen N Rao (AMD) <naveen@kernel.org>
Link: https://patch.msgid.link/20260514213115.1637082-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a dedicated local APIC API, kvm_x2apic_disable_intercept_reg_mask(),
to provide the mask of x2APIC registers whose MSRs can and should be passed
through to the guest when x2APIC virtualization is enable, and use it in
lieu of the open-coded equivalent VMX logic. Providing a common helper
will allow sharing the logic with SVM (x2AVIC), and as a bonus eliminates
the somewhat confusing code where KVM enables interception for MSR_TYPE_RW,
even though only the READ case actually needs to be updated.
No functional change intended.
Cc: stable@vger.kernel.org
Reviewed-by: Naveen N Rao (AMD) <naveen@kernel.org>
Link: https://patch.msgid.link/20260514213115.1637082-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Small fixes, two in drivers and the remaining a sign conversion probem in sd
with no user visible consequences (non-zero is error).
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Small fixes, two in drivers and the remaining a sign conversion probem
in sd with no user visible consequences (non-zero is error)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: tcm_loop: Fix NULL ptr dereference
scsi: isci: Fix use-after-free in device removal path
scsi: sd: Fix return code handling in sd_spinup_disk()
Fixes and New HW Support
- Add ACPI_HANDLE()/ACPI_COMPANION() NULL checks (many drivers) to
handle match overrides gracefully
- asus-armoury:
- Fix mini-LED mode get/set
- Add support for FA401EA, FX607VU, G614FR, and GU605CP
- bitland-mifs-wmi: Add CONFIG_LEDS_CLASS dependency
- hp-wmi: Add thermal support for Omen 16-c0xxx (board 8902)
- intel/vsec: Fix enable_cnt imbalance due to PCIe error recovery
- surface/aggregator_registry: Remove battery & AC nodes on Surface
Laptop 7 to avoid duplicated devices
- uniwill-laptop:
- Handle uninitialized and invalid charging threshold values
- Accept charging threshold of 0 through power supply sysfs ABI and
clamp it to 1
- Make 'force' parameter to work also when device descriptor is found
- Do not enable charging limit despite the 'force' parameter to avoid
permanent damage to battery
The following is an automated shortlog grouped by driver:
acer-wireless:
- Check ACPI_COMPANION() against NULL
adv_swbutton:
- Check ACPI_HANDLE() against NULL
asus-armoury:
- add support for FA401EA
- add support for FX607VU
- add support for G614FR
- add support for GU605CP
- fix mini-LED mode get/set on MODE2 devices
asus-laptop:
- Check ACPI_COMPANION() against NULL
bitland-mifs-wmi:
- add CONFIG_LEDS_CLASS dependency
dell/dell-rbtn:
- Check ACPI_COMPANION() against NULL
eeepc-laptop:
- Check ACPI_COMPANION() against NULL
fujitsu:
- Check ACPI_COMPANION() against NULL
fujitsu-tablet:
- Check ACPI_COMPANION() against NULL
hp_accel:
- Check ACPI_COMPANION() against NULL
hp-wmi:
- fix support for thermal profile Omen 16-с0xxx laptops
intel-hid:
- Check ACPI_HANDLE() against NULL
intel/rst:
- Check ACPI_COMPANION() against NULL
intel_sar:
- Check ACPI_HANDLE() against NULL
intel/smartconnect:
- Check ACPI_HANDLE() against NULL
intel-vbtn:
- Check ACPI_HANDLE() against NULL
intel/vsec:
- Fix enable_cnt imbalance on PCIe error recovery
lg-laptop:
- Check ACPI_COMPANION() against NULL
panasonic-laptop:
- Check ACPI_COMPANION() against NULL
sony-laptop:
- Check ACPI_COMPANION() against NULL
surface: aggregator_registry:
- omit battery & AC nodes on Surface Laptop 7
surface: surfacepro3_button:
- Check ACPI_COMPANION()
system76:
- Check ACPI_COMPANION() against NULL
toshiba_acpi:
- Check ACPI_COMPANION() against NULL
toshiba_bluetooth:
- Check ACPI_COMPANION() against NULL
toshiba_haps:
- Check ACPI_COMPANION() against NULL
uniwill-laptop:
- Accept charging threshold of 0
- Do not enable the charging limit even when forced
- Fix behavior of "force" module param
- Properly initialize charging threshold
wireless-hotkey:
- Check ACPI_COMPANION() against NULL
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Merge tag 'platform-drivers-x86-v7.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from
- Add ACPI_HANDLE()/ACPI_COMPANION() NULL checks (many drivers) to
handle match overrides gracefully
- asus-armoury:
- Fix mini-LED mode get/set
- Add support for FA401EA, FX607VU, G614FR, and GU605CP
- bitland-mifs-wmi:
- Add CONFIG_LEDS_CLASS dependency
- hp-wmi:
- Add thermal support for Omen 16-c0xxx (board 8902)
- intel/vsec:
- Fix enable_cnt imbalance due to PCIe error recovery
- surface/aggregator_registry:
- Remove battery & AC nodes on Surface Laptop 7 to avoid duplicated
devices
- uniwill-laptop:
- Handle uninitialized and invalid charging threshold values
- Accept charging threshold of 0 through power supply sysfs ABI and
clamp it to 1
- Make 'force' parameter to work also when device descriptor is
found
- Do not enable charging limit despite the 'force' parameter to
avoid permanent damage to battery
* tag 'platform-drivers-x86-v7.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (35 commits)
platform/x86: bitland-mifs-wmi: add CONFIG_LEDS_CLASS dependency
platform/x86: wireless-hotkey: Check ACPI_COMPANION() against NULL
platform/x86: toshiba_haps: Check ACPI_COMPANION() against NULL
platform/x86: toshiba_bluetooth: Check ACPI_COMPANION() against NULL
platform/x86: toshiba_acpi: Check ACPI_COMPANION() against NULL
platform/x86: system76: Check ACPI_COMPANION() against NULL
platform/x86: sony-laptop: Check ACPI_COMPANION() against NULL
platform/x86: panasonic-laptop: Check ACPI_COMPANION() against NULL
platform/x86: lg-laptop: Check ACPI_COMPANION() against NULL
platform/x86: intel/smartconnect: Check ACPI_HANDLE() against NULL
platform/x86: intel/rst: Check ACPI_COMPANION() against NULL
platform/x86: fujitsu-tablet: Check ACPI_COMPANION() against NULL
platform/x86: fujitsu: Check ACPI_COMPANION() against NULL
platform/x86: eeepc-laptop: Check ACPI_COMPANION() against NULL
platform/x86: dell/dell-rbtn: Check ACPI_COMPANION() against NULL
platform/x86: asus-laptop: Check ACPI_COMPANION() against NULL
platform/x86: acer-wireless: Check ACPI_COMPANION() against NULL
platform/x86: asus-armoury: add support for GU605CP
platform/x86: asus-armoury: add support for FA401EA
platform/x86: asus-armoury: add support for G614FR
...
