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ASoC: fsl_esai: restore DAI format constants#12

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ASoC: fsl_esai: restore DAI format constants#12
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@nsdrude nsdrude commented Oct 24, 2023

The patch "MLK-19750-1: ASoC: fsl_esai: enhance async mode (part 1)", reverted the constants to their old naming and replaced with and used the wrong values: https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/include/sound/soc-dai.h#L127-L131

This results in the error:
root@imx8qm-var-som:~# aplay /usr/share/sounds/alsa/Front_Center.wav
[ 21.241657] fsl-esai-dai 59010000.esai: failed to derive required SCKT rate
[ 21.248673] fsl-esai-dai 59010000.esai: ASoC: error at snd_soc_dai_hw_params on 59010000.esai: -22
[ 21.257795] HiFi: ASoC: error at __soc_pcm_hw_params on HiFi: -22
ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_direct.c:1336:(snd1_pcm_direct_initialize_slave) unable to install hw params
ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_dmix.c:1011:(snd_pcm_dmix_open) unable to initialize slave
aplay: main:831: audio open error: Invalid argument

This patch restores the original constants.

fixes: 8734e7f

The patch "MLK-19750-1: ASoC: fsl_esai: enhance async mode (part 1)",
reverted the constants to their old naming and replaced with and used
the wrong values: https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/include/sound/soc-dai.h#L127-L131

This results in the error:
  root@imx8qm-var-som:~# aplay /usr/share/sounds/alsa/Front_Center.wav
  [   21.241657] fsl-esai-dai 59010000.esai: failed to derive required SCKT rate
  [   21.248673] fsl-esai-dai 59010000.esai: ASoC: error at snd_soc_dai_hw_params on 59010000.esai: -22
  [   21.257795]  HiFi: ASoC: error at __soc_pcm_hw_params on HiFi: -22
  ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_direct.c:1336:(snd1_pcm_direct_initialize_slave) unable to install hw params
  ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_dmix.c:1011:(snd_pcm_dmix_open) unable to initialize slave
  aplay: main:831: audio open error: Invalid argument

This patch restores the original constants.

fixes: nxp-imx@8734e7f

Signed-off-by: Nate Drude <nate.d@variscite.com>
Overdr0ne pushed a commit to Overdr0ne/linux-imx that referenced this pull request Jul 28, 2025
* dts: mt-connect: add gpio line names

* dts: mt-connect: remove sai3 and mux its gpios in gpio blocks
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 27, 2026
[ Upstream commit a154f5f ]

The following call trace shows a deadlock issue due to recursive locking of
mutex "device_mutex". First lock acquire is in target_for_each_device() and
second in target_free_device().

 PID: 148266   TASK: ffff8be21ffb5d00  CPU: 10   COMMAND: "iscsi_ttx"
  #0 [ffffa2bfc9ec3b18] __schedule at ffffffffa8060e7f
  #1 [ffffa2bfc9ec3ba0] schedule at ffffffffa8061224
  nxp-imx#2 [ffffa2bfc9ec3bb8] schedule_preempt_disabled at ffffffffa80615ee
  nxp-imx#3 [ffffa2bfc9ec3bc8] __mutex_lock at ffffffffa8062fd7
  nxp-imx#4 [ffffa2bfc9ec3c40] __mutex_lock_slowpath at ffffffffa80631d3
  nxp-imx#5 [ffffa2bfc9ec3c50] mutex_lock at ffffffffa806320c
  nxp-imx#6 [ffffa2bfc9ec3c68] target_free_device at ffffffffc0935998 [target_core_mod]
  nxp-imx#7 [ffffa2bfc9ec3c90] target_core_dev_release at ffffffffc092f975 [target_core_mod]
  nxp-imx#8 [ffffa2bfc9ec3ca0] config_item_put at ffffffffa79d250f
  nxp-imx#9 [ffffa2bfc9ec3cd0] config_item_put at ffffffffa79d2583
 nxp-imx#10 [ffffa2bfc9ec3ce0] target_devices_idr_iter at ffffffffc0933f3a [target_core_mod]
 nxp-imx#11 [ffffa2bfc9ec3d00] idr_for_each at ffffffffa803f6fc
 nxp-imx#12 [ffffa2bfc9ec3d60] target_for_each_device at ffffffffc0935670 [target_core_mod]
 nxp-imx#13 [ffffa2bfc9ec3d98] transport_deregister_session at ffffffffc0946408 [target_core_mod]
 nxp-imx#14 [ffffa2bfc9ec3dc8] iscsit_close_session at ffffffffc09a44a6 [iscsi_target_mod]
 nxp-imx#15 [ffffa2bfc9ec3df0] iscsit_close_connection at ffffffffc09a4a88 [iscsi_target_mod]
 nxp-imx#16 [ffffa2bfc9ec3df8] finish_task_switch at ffffffffa76e5d07
 nxp-imx#17 [ffffa2bfc9ec3e78] iscsit_take_action_for_connection_exit at ffffffffc0991c23 [iscsi_target_mod]
 nxp-imx#18 [ffffa2bfc9ec3ea0] iscsi_target_tx_thread at ffffffffc09a403b [iscsi_target_mod]
 nxp-imx#19 [ffffa2bfc9ec3f08] kthread at ffffffffa76d8080
 nxp-imx#20 [ffffa2bfc9ec3f50] ret_from_fork at ffffffffa8200364

Fixes: 36d4cb4 ("scsi: target: Avoid that EXTENDED COPY commands trigger lock inversion")
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Link: https://lore.kernel.org/r/20230918225848.66463-1-junxiao.bi@oracle.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 27, 2026
[ Upstream commit a84fbf2 ]

Generating metrics llc_code_read_mpi_demand_plus_prefetch,
llc_data_read_mpi_demand_plus_prefetch,
llc_miss_local_memory_bandwidth_read,
llc_miss_local_memory_bandwidth_write,
nllc_miss_remote_memory_bandwidth_read, memory_bandwidth_read,
memory_bandwidth_write, uncore_frequency, upi_data_transmit_bw,
C2_Pkg_Residency, C3_Core_Residency, C3_Pkg_Residency,
C6_Core_Residency, C6_Pkg_Residency, C7_Core_Residency,
C7_Pkg_Residency, UNCORE_FREQ and tma_info_system_socket_clks would
trigger an address sanitizer heap-buffer-overflows on a SkylakeX.

```
==2567752==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x5020003ed098 at pc 0x5621a816654e bp 0x7fffb55d4da0 sp 0x7fffb55d4d98
READ of size 4 at 0x5020003eee78 thread T0
    #0 0x558265d6654d in aggr_cpu_id__is_empty tools/perf/util/cpumap.c:694:12
    #1 0x558265c914da in perf_stat__get_aggr tools/perf/builtin-stat.c:1490:6
    nxp-imx#2 0x558265c914da in perf_stat__get_global_cached tools/perf/builtin-stat.c:1530:9
    nxp-imx#3 0x558265e53290 in should_skip_zero_counter tools/perf/util/stat-display.c:947:31
    nxp-imx#4 0x558265e53290 in print_counter_aggrdata tools/perf/util/stat-display.c:985:18
    nxp-imx#5 0x558265e51931 in print_counter tools/perf/util/stat-display.c:1110:3
    nxp-imx#6 0x558265e51931 in evlist__print_counters tools/perf/util/stat-display.c:1571:5
    nxp-imx#7 0x558265c8ec87 in print_counters tools/perf/builtin-stat.c:981:2
    nxp-imx#8 0x558265c8cc71 in cmd_stat tools/perf/builtin-stat.c:2837:3
    nxp-imx#9 0x558265bb9bd4 in run_builtin tools/perf/perf.c:323:11
    nxp-imx#10 0x558265bb98eb in handle_internal_command tools/perf/perf.c:377:8
    nxp-imx#11 0x558265bb9389 in run_argv tools/perf/perf.c:421:2
    nxp-imx#12 0x558265bb9389 in main tools/perf/perf.c:537:3
```

The issue was the use of testing a cpumap with NULL rather than using
empty, as a map containing the dummy value isn't NULL and the -1
results in an empty aggr map being allocated which legitimately
overflows when any member is accessed.

Fixes: 8a96f45 ("perf stat: Avoid SEGV if core.cpus isn't set")
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230906003912.3317462-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 28, 2026
commit e14aec2 upstream.

Fix kernel crash in AP bus code caused by very early invocation of the
config change callback function via SCLP.

After a fresh IML of the machine the crypto cards are still offline and
will get switched online only with activation of any LPAR which has the
card in it's configuration. A crypto card coming online is reported
to the LPAR via SCLP and the AP bus offers a callback function to get
this kind of information. However, it may happen that the callback is
invoked before the AP bus init function is complete. As the callback
triggers a synchronous AP bus scan, the scan may already run but some
internal states are not initialized by the AP bus init function resulting
in a crash like this:

  [   11.635859] Unable to handle kernel pointer dereference in virtual kernel address space
  [   11.635861] Failing address: 0000000000000000 TEID: 0000000000000887
  [   11.635862] Fault in home space mode while using kernel ASCE.
  [   11.635864] AS:00000000894c4007 R3:00000001fece8007 S:00000001fece7800 P:000000000000013d
  [   11.635879] Oops: 0004 ilc:1 [#1] SMP
  [   11.635882] Modules linked in:
  [   11.635884] CPU: 5 PID: 42 Comm: kworker/5:0 Not tainted 6.6.0-rc3-00003-g4dbf7cdc6b42 nxp-imx#12
  [   11.635886] Hardware name: IBM 3931 A01 751 (LPAR)
  [   11.635887] Workqueue: events_long ap_scan_bus
  [   11.635891] Krnl PSW : 0704c00180000000 0000000000000000 (0x0)
  [   11.635895]            R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3
  [   11.635897] Krnl GPRS: 0000000001000a00 0000000000000000 0000000000000006 0000000089591940
  [   11.635899]            0000000080000000 0000000000000a00 0000000000000000 0000000000000000
  [   11.635901]            0000000081870c00 0000000089591000 000000008834e4e2 0000000002625a00
  [   11.635903]            0000000081734200 0000038000913c18 000000008834c6d6 0000038000913ac8
  [   11.635906] Krnl Code:>0000000000000000: 0000                illegal
  [   11.635906]            0000000000000002: 0000                illegal
  [   11.635906]            0000000000000004: 0000                illegal
  [   11.635906]            0000000000000006: 0000                illegal
  [   11.635906]            0000000000000008: 0000                illegal
  [   11.635906]            000000000000000a: 0000                illegal
  [   11.635906]            000000000000000c: 0000                illegal
  [   11.635906]            000000000000000e: 0000                illegal
  [   11.635915] Call Trace:
  [   11.635916]  [<0000000000000000>] 0x0
  [   11.635918]  [<000000008834e4e2>] ap_queue_init_state+0x82/0xb8
  [   11.635921]  [<000000008834ba1c>] ap_scan_domains+0x6fc/0x740
  [   11.635923]  [<000000008834c092>] ap_scan_adapter+0x632/0x8b0
  [   11.635925]  [<000000008834c3e4>] ap_scan_bus+0xd4/0x288
  [   11.635927]  [<00000000879a33ba>] process_one_work+0x19a/0x410
  [   11.635930] Discipline DIAG cannot be used without z/VM
  [   11.635930]  [<00000000879a3a2c>] worker_thread+0x3fc/0x560
  [   11.635933]  [<00000000879aea60>] kthread+0x120/0x128
  [   11.635936]  [<000000008792afa4>] __ret_from_fork+0x3c/0x58
  [   11.635938]  [<00000000885ebe62>] ret_from_fork+0xa/0x30
  [   11.635942] Last Breaking-Event-Address:
  [   11.635942]  [<000000008834c6d4>] ap_wait+0xcc/0x148

This patch improves the ap_bus_force_rescan() function which is
invoked by the config change callback by checking if a first
initial AP bus scan has been done. If not, the force rescan request
is simple ignored. Anyhow it does not make sense to trigger AP bus
re-scans even before the very first bus scan is complete.

Cc: stable@vger.kernel.org
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 28, 2026
[ Upstream commit e3e82fc ]

When creating ceq_0 during probing irdma, cqp.sc_cqp will be sent as a
cqp_request to cqp->sc_cqp.sq_ring. If the request is pending when
removing the irdma driver or unplugging its aux device, cqp.sc_cqp will be
dereferenced as wrong struct in irdma_free_pending_cqp_request().

  PID: 3669   TASK: ffff88aef892c000  CPU: 28  COMMAND: "kworker/28:0"
   #0 [fffffe0000549e38] crash_nmi_callback at ffffffff810e3a34
   #1 [fffffe0000549e40] nmi_handle at ffffffff810788b2
   nxp-imx#2 [fffffe0000549ea0] default_do_nmi at ffffffff8107938f
   nxp-imx#3 [fffffe0000549eb8] do_nmi at ffffffff81079582
   nxp-imx#4 [fffffe0000549ef0] end_repeat_nmi at ffffffff82e016b4
      [exception RIP: native_queued_spin_lock_slowpath+1291]
      RIP: ffffffff8127e72b  RSP: ffff88aa841ef778  RFLAGS: 00000046
      RAX: 0000000000000000  RBX: ffff88b01f849700  RCX: ffffffff8127e47e
      RDX: 0000000000000000  RSI: 0000000000000004  RDI: ffffffff83857ec0
      RBP: ffff88afe3e4efc8   R8: ffffed15fc7c9dfa   R9: ffffed15fc7c9dfa
      R10: 0000000000000001  R11: ffffed15fc7c9df9  R12: 0000000000740000
      R13: ffff88b01f849708  R14: 0000000000000003  R15: ffffed1603f092e1
      ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
  -- <NMI exception stack> --
   nxp-imx#5 [ffff88aa841ef778] native_queued_spin_lock_slowpath at ffffffff8127e72b
   nxp-imx#6 [ffff88aa841ef7b0] _raw_spin_lock_irqsave at ffffffff82c22aa4
   nxp-imx#7 [ffff88aa841ef7c8] __wake_up_common_lock at ffffffff81257363
   nxp-imx#8 [ffff88aa841ef888] irdma_free_pending_cqp_request at ffffffffa0ba12cc [irdma]
   nxp-imx#9 [ffff88aa841ef958] irdma_cleanup_pending_cqp_op at ffffffffa0ba1469 [irdma]
   nxp-imx#10 [ffff88aa841ef9c0] irdma_ctrl_deinit_hw at ffffffffa0b2989f [irdma]
   nxp-imx#11 [ffff88aa841efa28] irdma_remove at ffffffffa0b252df [irdma]
   nxp-imx#12 [ffff88aa841efae8] auxiliary_bus_remove at ffffffff8219afdb
   nxp-imx#13 [ffff88aa841efb00] device_release_driver_internal at ffffffff821882e6
   nxp-imx#14 [ffff88aa841efb38] bus_remove_device at ffffffff82184278
   nxp-imx#15 [ffff88aa841efb88] device_del at ffffffff82179d23
   nxp-imx#16 [ffff88aa841efc48] ice_unplug_aux_dev at ffffffffa0eb1c14 [ice]
   nxp-imx#17 [ffff88aa841efc68] ice_service_task at ffffffffa0d88201 [ice]
   nxp-imx#18 [ffff88aa841efde8] process_one_work at ffffffff811c589a
   nxp-imx#19 [ffff88aa841efe60] worker_thread at ffffffff811c71ff
   nxp-imx#20 [ffff88aa841eff10] kthread at ffffffff811d87a0
   nxp-imx#21 [ffff88aa841eff50] ret_from_fork at ffffffff82e0022f

Fixes: 44d9e52 ("RDMA/irdma: Implement device initialization definitions")
Link: https://lore.kernel.org/r/20231130081415.891006-1-lishifeng@sangfor.com.cn
Suggested-by: "Ismail, Mustafa" <mustafa.ismail@intel.com>
Signed-off-by: Shifeng Li <lishifeng@sangfor.com.cn>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
[ Upstream commit f8bbc07 ]

vhost_worker will call tun call backs to receive packets. If too many
illegal packets arrives, tun_do_read will keep dumping packet contents.
When console is enabled, it will costs much more cpu time to dump
packet and soft lockup will be detected.

net_ratelimit mechanism can be used to limit the dumping rate.

PID: 33036    TASK: ffff949da6f20000  CPU: 23   COMMAND: "vhost-32980"
 #0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253
 #1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3
 nxp-imx#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e
 nxp-imx#3 [fffffe00003fced0] do_nmi at ffffffff8922660d
 nxp-imx#4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663
    [exception RIP: io_serial_in+20]
    RIP: ffffffff89792594  RSP: ffffa655314979e8  RFLAGS: 00000002
    RAX: ffffffff89792500  RBX: ffffffff8af428a0  RCX: 0000000000000000
    RDX: 00000000000003fd  RSI: 0000000000000005  RDI: ffffffff8af428a0
    RBP: 0000000000002710   R8: 0000000000000004   R9: 000000000000000f
    R10: 0000000000000000  R11: ffffffff8acbf64f  R12: 0000000000000020
    R13: ffffffff8acbf698  R14: 0000000000000058  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 nxp-imx#5 [ffffa655314979e8] io_serial_in at ffffffff89792594
 nxp-imx#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470
 nxp-imx#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6
 nxp-imx#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605
 nxp-imx#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558
 nxp-imx#10 [ffffa65531497ac8] console_unlock at ffffffff89316124
 nxp-imx#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07
 nxp-imx#12 [ffffa65531497b68] printk at ffffffff89318306
 nxp-imx#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765
 nxp-imx#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun]
 nxp-imx#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun]
 nxp-imx#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net]
 nxp-imx#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost]
 nxp-imx#18 [ffffa65531497f10] kthread at ffffffff892d2e72
 nxp-imx#19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f

Fixes: ef3db4a ("tun: avoid BUG, dump packet on GSO errors")
Signed-off-by: Lei Chen <lei.chen@smartx.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20240415020247.2207781-1-lei.chen@smartx.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
[ Upstream commit 24457f1 ]

syzkaller reported a warning [0] triggered while destroying immature
netns.

rpc_proc_register() was called in init_nfs_fs(), but its error
has been ignored since at least the initial commit 1da177e
("Linux-2.6.12-rc2").

Recently, commit d47151b ("nfs: expose /proc/net/sunrpc/nfs
in net namespaces") converted the procfs to per-netns and made
the problem more visible.

Even when rpc_proc_register() fails, nfs_net_init() could succeed,
and thus nfs_net_exit() will be called while destroying the netns.

Then, remove_proc_entry() will be called for non-existing proc
directory and trigger the warning below.

Let's handle the error of rpc_proc_register() properly in nfs_net_init().

[0]:
name 'nfs'
WARNING: CPU: 1 PID: 1710 at fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711
Modules linked in:
CPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e nxp-imx#12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711
Code: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff <0f> 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb
RSP: 0018:ffffc9000c6d7ce0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c
RDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc
R13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: ffffffff85741ff8
FS:  00007f30cfba8640(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff51afe8000 CR3: 000000005a60a005 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 <TASK>
 rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310
 nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438
 ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170
 setup_net+0x46c/0x660 net/core/net_namespace.c:372
 copy_net_ns+0x244/0x590 net/core/net_namespace.c:505
 create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228
 ksys_unshare+0x342/0x760 kernel/fork.c:3322
 __do_sys_unshare kernel/fork.c:3393 [inline]
 __se_sys_unshare kernel/fork.c:3391 [inline]
 __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x46/0x4e
RIP: 0033:0x7f30d0febe5d
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48
RSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600
RBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000
 </TASK>

Fixes: 1da177e ("Linux-2.6.12-rc2")
Reported-by: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
[ Upstream commit 769e6a1 ]

ui_browser__show() is capturing the input title that is stack allocated
memory in hist_browser__run().

Avoid a use after return by strdup-ing the string.

Committer notes:

Further explanation from Ian Rogers:

My command line using tui is:
$ sudo bash -c 'rm /tmp/asan.log*; export
ASAN_OPTIONS="log_path=/tmp/asan.log"; /tmp/perf/perf mem record -a
sleep 1; /tmp/perf/perf mem report'
I then go to the perf annotate view and quit. This triggers the asan
error (from the log file):
```
==1254591==ERROR: AddressSanitizer: stack-use-after-return on address
0x7f2813331920 at pc 0x7f28180
65991 bp 0x7fff0a21c750 sp 0x7fff0a21bf10
READ of size 80 at 0x7f2813331920 thread T0
    #0 0x7f2818065990 in __interceptor_strlen
../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:461
    #1 0x7f2817698251 in SLsmg_write_wrapped_string
(/lib/x86_64-linux-gnu/libslang.so.2+0x98251)
    nxp-imx#2 0x7f28176984b9 in SLsmg_write_nstring
(/lib/x86_64-linux-gnu/libslang.so.2+0x984b9)
    nxp-imx#3 0x55c94045b365 in ui_browser__write_nstring ui/browser.c:60
    nxp-imx#4 0x55c94045c558 in __ui_browser__show_title ui/browser.c:266
    nxp-imx#5 0x55c94045c776 in ui_browser__show ui/browser.c:288
    nxp-imx#6 0x55c94045c06d in ui_browser__handle_resize ui/browser.c:206
    nxp-imx#7 0x55c94047979b in do_annotate ui/browsers/hists.c:2458
    nxp-imx#8 0x55c94047fb17 in evsel__hists_browse ui/browsers/hists.c:3412
    nxp-imx#9 0x55c940480a0c in perf_evsel_menu__run ui/browsers/hists.c:3527
    nxp-imx#10 0x55c940481108 in __evlist__tui_browse_hists ui/browsers/hists.c:3613
    nxp-imx#11 0x55c9404813f7 in evlist__tui_browse_hists ui/browsers/hists.c:3661
    nxp-imx#12 0x55c93ffa253f in report__browse_hists tools/perf/builtin-report.c:671
    nxp-imx#13 0x55c93ffa58ca in __cmd_report tools/perf/builtin-report.c:1141
    nxp-imx#14 0x55c93ffaf159 in cmd_report tools/perf/builtin-report.c:1805
    nxp-imx#15 0x55c94000c05c in report_events tools/perf/builtin-mem.c:374
    nxp-imx#16 0x55c94000d96d in cmd_mem tools/perf/builtin-mem.c:516
    nxp-imx#17 0x55c9400e44ee in run_builtin tools/perf/perf.c:350
    nxp-imx#18 0x55c9400e4a5a in handle_internal_command tools/perf/perf.c:403
    nxp-imx#19 0x55c9400e4e22 in run_argv tools/perf/perf.c:447
    nxp-imx#20 0x55c9400e53ad in main tools/perf/perf.c:561
    nxp-imx#21 0x7f28170456c9 in __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
    nxp-imx#22 0x7f2817045784 in __libc_start_main_impl ../csu/libc-start.c:360
    nxp-imx#23 0x55c93ff544c0 in _start (/tmp/perf/perf+0x19a4c0) (BuildId:
84899b0e8c7d3a3eaa67b2eb35e3d8b2f8cd4c93)

Address 0x7f2813331920 is located in stack of thread T0 at offset 32 in frame
    #0 0x55c94046e85e in hist_browser__run ui/browsers/hists.c:746

  This frame has 1 object(s):
    [32, 192) 'title' (line 747) <== Memory access at offset 32 is
inside this variable
HINT: this may be a false positive if your program uses some custom
stack unwind mechanism, swapcontext or vfork
```
hist_browser__run isn't on the stack so the asan error looks legit.
There's no clean init/exit on struct ui_browser so I may be trading a
use-after-return for a memory leak, but that seems look a good trade
anyway.

Fixes: 05e8b08 ("perf ui browser: Stop using 'self'")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Li Dong <lidong@vivo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20240507183545.1236093-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
[ Upstream commit 51d1b25 ]

syzkaller reported data-race of sk->sk_hash in unix_autobind() [0],
and the same ones exist in unix_bind_bsd() and unix_bind_abstract().

The three bind() functions prefetch sk->sk_hash locklessly and
use it later after validating that unix_sk(sk)->addr is NULL under
unix_sk(sk)->bindlock.

The prefetched sk->sk_hash is the hash value of unbound socket set
in unix_create1() and does not change until bind() completes.

There could be a chance that sk->sk_hash changes after the lockless
read.  However, in such a case, non-NULL unix_sk(sk)->addr is visible
under unix_sk(sk)->bindlock, and bind() returns -EINVAL without using
the prefetched value.

The KCSAN splat is false-positive, but let's silence it by reading
sk->sk_hash under unix_sk(sk)->bindlock.

[0]:
BUG: KCSAN: data-race in unix_autobind / unix_autobind

write to 0xffff888034a9fb88 of 4 bytes by task 4468 on cpu 0:
 __unix_set_addr_hash net/unix/af_unix.c:331 [inline]
 unix_autobind+0x47a/0x7d0 net/unix/af_unix.c:1185
 unix_dgram_connect+0x7e3/0x890 net/unix/af_unix.c:1373
 __sys_connect_file+0xd7/0xe0 net/socket.c:2048
 __sys_connect+0x114/0x140 net/socket.c:2065
 __do_sys_connect net/socket.c:2075 [inline]
 __se_sys_connect net/socket.c:2072 [inline]
 __x64_sys_connect+0x40/0x50 net/socket.c:2072
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x46/0x4e

read to 0xffff888034a9fb88 of 4 bytes by task 4465 on cpu 1:
 unix_autobind+0x28/0x7d0 net/unix/af_unix.c:1134
 unix_dgram_connect+0x7e3/0x890 net/unix/af_unix.c:1373
 __sys_connect_file+0xd7/0xe0 net/socket.c:2048
 __sys_connect+0x114/0x140 net/socket.c:2065
 __do_sys_connect net/socket.c:2075 [inline]
 __se_sys_connect net/socket.c:2072 [inline]
 __x64_sys_connect+0x40/0x50 net/socket.c:2072
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x46/0x4e

value changed: 0x000000e4 -> 0x000001e3

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 4465 Comm: syz-executor.0 Not tainted 6.8.0-12822-gcd51db110a7e nxp-imx#12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

Fixes: afd20b9 ("af_unix: Replace the big lock with small locks.")
Reported-by: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240522154218.78088-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
commit 9d274c1 upstream.

We have been seeing crashes on duplicate keys in
btrfs_set_item_key_safe():

  BTRFS critical (device vdb): slot 4 key (450 108 8192) new key (450 108 8192)
  ------------[ cut here ]------------
  kernel BUG at fs/btrfs/ctree.c:2620!
  invalid opcode: 0000 [#1] PREEMPT SMP PTI
  CPU: 0 PID: 3139 Comm: xfs_io Kdump: loaded Not tainted 6.9.0 nxp-imx#6
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
  RIP: 0010:btrfs_set_item_key_safe+0x11f/0x290 [btrfs]

With the following stack trace:

  #0  btrfs_set_item_key_safe (fs/btrfs/ctree.c:2620:4)
  #1  btrfs_drop_extents (fs/btrfs/file.c:411:4)
  nxp-imx#2  log_one_extent (fs/btrfs/tree-log.c:4732:9)
  nxp-imx#3  btrfs_log_changed_extents (fs/btrfs/tree-log.c:4955:9)
  nxp-imx#4  btrfs_log_inode (fs/btrfs/tree-log.c:6626:9)
  nxp-imx#5  btrfs_log_inode_parent (fs/btrfs/tree-log.c:7070:8)
  nxp-imx#6  btrfs_log_dentry_safe (fs/btrfs/tree-log.c:7171:8)
  nxp-imx#7  btrfs_sync_file (fs/btrfs/file.c:1933:8)
  nxp-imx#8  vfs_fsync_range (fs/sync.c:188:9)
  nxp-imx#9  vfs_fsync (fs/sync.c:202:9)
  nxp-imx#10 do_fsync (fs/sync.c:212:9)
  nxp-imx#11 __do_sys_fdatasync (fs/sync.c:225:9)
  nxp-imx#12 __se_sys_fdatasync (fs/sync.c:223:1)
  nxp-imx#13 __x64_sys_fdatasync (fs/sync.c:223:1)
  nxp-imx#14 do_syscall_x64 (arch/x86/entry/common.c:52:14)
  nxp-imx#15 do_syscall_64 (arch/x86/entry/common.c:83:7)
  nxp-imx#16 entry_SYSCALL_64+0xaf/0x14c (arch/x86/entry/entry_64.S:121)

So we're logging a changed extent from fsync, which is splitting an
extent in the log tree. But this split part already exists in the tree,
triggering the BUG().

This is the state of the log tree at the time of the crash, dumped with
drgn (https://github.com/osandov/drgn/blob/main/contrib/btrfs_tree.py)
to get more details than btrfs_print_leaf() gives us:

  >>> print_extent_buffer(prog.crashed_thread().stack_trace()[0]["eb"])
  leaf 33439744 level 0 items 72 generation 9 owner 18446744073709551610
  leaf 33439744 flags 0x100000000000000
  fs uuid e5bd3946-400c-4223-8923-190ef1f18677
  chunk uuid d58cb17e-6d02-494a-829a-18b7d8a399da
          item 0 key (450 INODE_ITEM 0) itemoff 16123 itemsize 160
                  generation 7 transid 9 size 8192 nbytes 8473563889606862198
                  block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
                  sequence 204 flags 0x10(PREALLOC)
                  atime 1716417703.220000000 (2024-05-22 15:41:43)
                  ctime 1716417704.983333333 (2024-05-22 15:41:44)
                  mtime 1716417704.983333333 (2024-05-22 15:41:44)
                  otime 17592186044416.000000000 (559444-03-08 01:40:16)
          item 1 key (450 INODE_REF 256) itemoff 16110 itemsize 13
                  index 195 namelen 3 name: 193
          item 2 key (450 XATTR_ITEM 1640047104) itemoff 16073 itemsize 37
                  location key (0 UNKNOWN.0 0) type XATTR
                  transid 7 data_len 1 name_len 6
                  name: user.a
                  data a
          item 3 key (450 EXTENT_DATA 0) itemoff 16020 itemsize 53
                  generation 9 type 1 (regular)
                  extent data disk byte 303144960 nr 12288
                  extent data offset 0 nr 4096 ram 12288
                  extent compression 0 (none)
          item 4 key (450 EXTENT_DATA 4096) itemoff 15967 itemsize 53
                  generation 9 type 2 (prealloc)
                  prealloc data disk byte 303144960 nr 12288
                  prealloc data offset 4096 nr 8192
          item 5 key (450 EXTENT_DATA 8192) itemoff 15914 itemsize 53
                  generation 9 type 2 (prealloc)
                  prealloc data disk byte 303144960 nr 12288
                  prealloc data offset 8192 nr 4096
  ...

So the real problem happened earlier: notice that items 4 (4k-12k) and 5
(8k-12k) overlap. Both are prealloc extents. Item 4 straddles i_size and
item 5 starts at i_size.

Here is the state of the filesystem tree at the time of the crash:

  >>> root = prog.crashed_thread().stack_trace()[2]["inode"].root
  >>> ret, nodes, slots = btrfs_search_slot(root, BtrfsKey(450, 0, 0))
  >>> print_extent_buffer(nodes[0])
  leaf 30425088 level 0 items 184 generation 9 owner 5
  leaf 30425088 flags 0x100000000000000
  fs uuid e5bd3946-400c-4223-8923-190ef1f18677
  chunk uuid d58cb17e-6d02-494a-829a-18b7d8a399da
  	...
          item 179 key (450 INODE_ITEM 0) itemoff 4907 itemsize 160
                  generation 7 transid 7 size 4096 nbytes 12288
                  block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
                  sequence 6 flags 0x10(PREALLOC)
                  atime 1716417703.220000000 (2024-05-22 15:41:43)
                  ctime 1716417703.220000000 (2024-05-22 15:41:43)
                  mtime 1716417703.220000000 (2024-05-22 15:41:43)
                  otime 1716417703.220000000 (2024-05-22 15:41:43)
          item 180 key (450 INODE_REF 256) itemoff 4894 itemsize 13
                  index 195 namelen 3 name: 193
          item 181 key (450 XATTR_ITEM 1640047104) itemoff 4857 itemsize 37
                  location key (0 UNKNOWN.0 0) type XATTR
                  transid 7 data_len 1 name_len 6
                  name: user.a
                  data a
          item 182 key (450 EXTENT_DATA 0) itemoff 4804 itemsize 53
                  generation 9 type 1 (regular)
                  extent data disk byte 303144960 nr 12288
                  extent data offset 0 nr 8192 ram 12288
                  extent compression 0 (none)
          item 183 key (450 EXTENT_DATA 8192) itemoff 4751 itemsize 53
                  generation 9 type 2 (prealloc)
                  prealloc data disk byte 303144960 nr 12288
                  prealloc data offset 8192 nr 4096

Item 5 in the log tree corresponds to item 183 in the filesystem tree,
but nothing matches item 4. Furthermore, item 183 is the last item in
the leaf.

btrfs_log_prealloc_extents() is responsible for logging prealloc extents
beyond i_size. It first truncates any previously logged prealloc extents
that start beyond i_size. Then, it walks the filesystem tree and copies
the prealloc extent items to the log tree.

If it hits the end of a leaf, then it calls btrfs_next_leaf(), which
unlocks the tree and does another search. However, while the filesystem
tree is unlocked, an ordered extent completion may modify the tree. In
particular, it may insert an extent item that overlaps with an extent
item that was already copied to the log tree.

This may manifest in several ways depending on the exact scenario,
including an EEXIST error that is silently translated to a full sync,
overlapping items in the log tree, or this crash. This particular crash
is triggered by the following sequence of events:

- Initially, the file has i_size=4k, a regular extent from 0-4k, and a
  prealloc extent beyond i_size from 4k-12k. The prealloc extent item is
  the last item in its B-tree leaf.
- The file is fsync'd, which copies its inode item and both extent items
  to the log tree.
- An xattr is set on the file, which sets the
  BTRFS_INODE_COPY_EVERYTHING flag.
- The range 4k-8k in the file is written using direct I/O. i_size is
  extended to 8k, but the ordered extent is still in flight.
- The file is fsync'd. Since BTRFS_INODE_COPY_EVERYTHING is set, this
  calls copy_inode_items_to_log(), which calls
  btrfs_log_prealloc_extents().
- btrfs_log_prealloc_extents() finds the 4k-12k prealloc extent in the
  filesystem tree. Since it starts before i_size, it skips it. Since it
  is the last item in its B-tree leaf, it calls btrfs_next_leaf().
- btrfs_next_leaf() unlocks the path.
- The ordered extent completion runs, which converts the 4k-8k part of
  the prealloc extent to written and inserts the remaining prealloc part
  from 8k-12k.
- btrfs_next_leaf() does a search and finds the new prealloc extent
  8k-12k.
- btrfs_log_prealloc_extents() copies the 8k-12k prealloc extent into
  the log tree. Note that it overlaps with the 4k-12k prealloc extent
  that was copied to the log tree by the first fsync.
- fsync calls btrfs_log_changed_extents(), which tries to log the 4k-8k
  extent that was written.
- This tries to drop the range 4k-8k in the log tree, which requires
  adjusting the start of the 4k-12k prealloc extent in the log tree to
  8k.
- btrfs_set_item_key_safe() sees that there is already an extent
  starting at 8k in the log tree and calls BUG().

Fix this by detecting when we're about to insert an overlapping file
extent item in the log tree and truncating the part that would overlap.

CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request Apr 29, 2026
commit be346c1 upstream.

The code in ocfs2_dio_end_io_write() estimates number of necessary
transaction credits using ocfs2_calc_extend_credits().  This however does
not take into account that the IO could be arbitrarily large and can
contain arbitrary number of extents.

Extent tree manipulations do often extend the current transaction but not
in all of the cases.  For example if we have only single block extents in
the tree, ocfs2_mark_extent_written() will end up calling
ocfs2_replace_extent_rec() all the time and we will never extend the
current transaction and eventually exhaust all the transaction credits if
the IO contains many single block extents.  Once that happens a
WARN_ON(jbd2_handle_buffer_credits(handle) <= 0) is triggered in
jbd2_journal_dirty_metadata() and subsequently OCFS2 aborts in response to
this error.  This was actually triggered by one of our customers on a
heavily fragmented OCFS2 filesystem.

To fix the issue make sure the transaction always has enough credits for
one extent insert before each call of ocfs2_mark_extent_written().

Heming Zhao said:

------
PANIC: "Kernel panic - not syncing: OCFS2: (device dm-1): panic forced after error"

PID: xxx  TASK: xxxx  CPU: 5  COMMAND: "SubmitThread-CA"
  #0 machine_kexec at ffffffff8c069932
  #1 __crash_kexec at ffffffff8c1338fa
  nxp-imx#2 panic at ffffffff8c1d69b9
  nxp-imx#3 ocfs2_handle_error at ffffffffc0c86c0c [ocfs2]
  nxp-imx#4 __ocfs2_abort at ffffffffc0c88387 [ocfs2]
  nxp-imx#5 ocfs2_journal_dirty at ffffffffc0c51e98 [ocfs2]
  nxp-imx#6 ocfs2_split_extent at ffffffffc0c27ea3 [ocfs2]
  nxp-imx#7 ocfs2_change_extent_flag at ffffffffc0c28053 [ocfs2]
  nxp-imx#8 ocfs2_mark_extent_written at ffffffffc0c28347 [ocfs2]
  nxp-imx#9 ocfs2_dio_end_io_write at ffffffffc0c2bef9 [ocfs2]
nxp-imx#10 ocfs2_dio_end_io at ffffffffc0c2c0f5 [ocfs2]
nxp-imx#11 dio_complete at ffffffff8c2b9fa7
nxp-imx#12 do_blockdev_direct_IO at ffffffff8c2bc09f
nxp-imx#13 ocfs2_direct_IO at ffffffffc0c2b653 [ocfs2]
nxp-imx#14 generic_file_direct_write at ffffffff8c1dcf14
nxp-imx#15 __generic_file_write_iter at ffffffff8c1dd07b
nxp-imx#16 ocfs2_file_write_iter at ffffffffc0c49f1f [ocfs2]
nxp-imx#17 aio_write at ffffffff8c2cc72e
nxp-imx#18 kmem_cache_alloc at ffffffff8c248dde
nxp-imx#19 do_io_submit at ffffffff8c2ccada
nxp-imx#20 do_syscall_64 at ffffffff8c004984
nxp-imx#21 entry_SYSCALL_64_after_hwframe at ffffffff8c8000ba

Link: https://lkml.kernel.org/r/20240617095543.6971-1-jack@suse.cz
Link: https://lkml.kernel.org/r/20240614145243.8837-1-jack@suse.cz
Fixes: c15471f ("ocfs2: fix sparse file & data ordering issue in direct io")
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Heming Zhao <heming.zhao@suse.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
upcliujie pushed a commit to upcliujie/linux-imx that referenced this pull request May 1, 2026
commit 7af76e9 upstream.

Receiving HSR frame with insufficient space to hold HSR tag in the skb
can result in a crash (kernel BUG):

[   45.390915] skbuff: skb_under_panic: text:ffffffff86f32cac len:26 put:14 head:ffff888042418000 data:ffff888042417ff4 tail:0xe end:0x180 dev:bridge_slave_1
[   45.392559] ------------[ cut here ]------------
[   45.392912] kernel BUG at net/core/skbuff.c:211!
[   45.393276] Oops: invalid opcode: 0000 [nxp-imx#1] SMP DEBUG_PAGEALLOC KASAN NOPTI
[   45.393809] CPU: 1 UID: 0 PID: 2496 Comm: reproducer Not tainted 6.15.0 nxp-imx#12 PREEMPT(undef)
[   45.394433] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   45.395273] RIP: 0010:skb_panic+0x15b/0x1d0

<snip registers, remove unreliable trace>

[   45.402911] Call Trace:
[   45.403105]  <IRQ>
[   45.404470]  skb_push+0xcd/0xf0
[   45.404726]  br_dev_queue_push_xmit+0x7c/0x6c0
[   45.406513]  br_forward_finish+0x128/0x260
[   45.408483]  __br_forward+0x42d/0x590
[   45.409464]  maybe_deliver+0x2eb/0x420
[   45.409763]  br_flood+0x174/0x4a0
[   45.410030]  br_handle_frame_finish+0xc7c/0x1bc0
[   45.411618]  br_handle_frame+0xac3/0x1230
[   45.413674]  __netif_receive_skb_core.constprop.0+0x808/0x3df0
[   45.422966]  __netif_receive_skb_one_core+0xb4/0x1f0
[   45.424478]  __netif_receive_skb+0x22/0x170
[   45.424806]  process_backlog+0x242/0x6d0
[   45.425116]  __napi_poll+0xbb/0x630
[   45.425394]  net_rx_action+0x4d1/0xcc0
[   45.427613]  handle_softirqs+0x1a4/0x580
[   45.427926]  do_softirq+0x74/0x90
[   45.428196]  </IRQ>

This issue was found by syzkaller.

The panic happens in br_dev_queue_push_xmit() once it receives a
corrupted skb with ETH header already pushed in linear data. When it
attempts the skb_push() call, there's not enough headroom and
skb_push() panics.

The corrupted skb is put on the queue by HSR layer, which makes a
sequence of unintended transformations when it receives a specific
corrupted HSR frame (with incomplete TAG).

Fix it by dropping and consuming frames that are not long enough to
contain both ethernet and hsr headers.

Alternative fix would be to check for enough headroom before skb_push()
in br_dev_queue_push_xmit().

In the reproducer, this is injected via AF_PACKET, but I don't easily
see why it couldn't be sent over the wire from adjacent network.

Further Details:

In the reproducer, the following network interface chain is set up:

┌────────────────┐   ┌────────────────┐
│ veth0_to_hsr   ├───┤  hsr_slave0    ┼───┐
└────────────────┘   └────────────────┘   │
                                          │ ┌──────┐
                                          ├─┤ hsr0 ├───┐
                                          │ └──────┘   │
┌────────────────┐   ┌────────────────┐   │            │┌────────┐
│ veth1_to_hsr   ┼───┤  hsr_slave1    ├───┘            └┤        │
└────────────────┘   └────────────────┘                ┌┼ bridge │
                                                       ││        │
                                                       │└────────┘
                                                       │
                                        ┌───────┐      │
                                        │  ...  ├──────┘
                                        └───────┘

To trigger the events leading up to crash, reproducer sends a corrupted
HSR frame with incomplete TAG, via AF_PACKET socket on 'veth0_to_hsr'.

The first HSR-layer function to process this frame is
hsr_handle_frame(). It and then checks if the
protocol is ETH_P_PRP or ETH_P_HSR. If it is, it calls
skb_set_network_header(skb, ETH_HLEN + HSR_HLEN), without checking that
the skb is long enough. For the crashing frame it is not, and hence the
skb->network_header and skb->mac_len fields are set incorrectly,
pointing after the end of the linear buffer.

I will call this a BUG#1 and it is what is addressed by this patch. In
the crashing scenario before the fix, the skb continues to go down the
hsr path as follows.

hsr_handle_frame() then calls this sequence
hsr_forward_skb()
  fill_frame_info()
    hsr->proto_ops->fill_frame_info()
      hsr_fill_frame_info()

hsr_fill_frame_info() contains a check that intends to check whether the
skb actually contains the HSR header. But the check relies on the
skb->mac_len field which was erroneously setup due to BUG#1, so the
check passes and the execution continues  back in the hsr_forward_skb():

hsr_forward_skb()
  hsr_forward_do()
    hsr->proto_ops->get_untagged_frame()
      hsr_get_untagged_frame()
        create_stripped_skb_hsr()

In create_stripped_skb_hsr(), a copy of the skb is created and is
further corrupted by operation that attempts to strip the HSR tag in a
call to __pskb_copy().

The skb enters create_stripped_skb_hsr() with ethernet header pushed in
linear buffer. The skb_pull(skb_in, HSR_HLEN) thus pulls 6 bytes of
ethernet header into the headroom, creating skb_in with a headroom of
size 8. The subsequent __pskb_copy() then creates an skb with headroom
of just 2 and skb->len of just 12, this is how it looks after the copy:

gdb) p skb->len
$10 = 12
(gdb) p skb->data
$11 = (unsigned char *) 0xffff888041e45382 "\252\252\252\252\252!\210\373",
(gdb) p skb->head
$12 = (unsigned char *) 0xffff888041e45380 ""

It seems create_stripped_skb_hsr() assumes that ETH header is pulled
in the headroom when it's entered, because it just pulls HSR header on
top. But that is not the case in our code-path and we end up with the
corrupted skb instead. I will call this BUG#2

*I got confused here because it seems that under no conditions can
create_stripped_skb_hsr() work well, the assumption it makes is not true
during the processing of hsr frames - since the skb_push() in
hsr_handle_frame to skb_pull in hsr_deliver_master(). I wonder whether I
missed something here.*

Next, the execution arrives in hsr_deliver_master(). It calls
skb_pull(ETH_HLEN), which just returns NULL - the SKB does not have
enough space for the pull (as it only has 12 bytes in total at this
point).

*The skb_pull() here further suggests that ethernet header is meant
to be pushed through the whole hsr processing and
create_stripped_skb_hsr() should pull it before doing the HSR header
pull.*

hsr_deliver_master() then puts the corrupted skb on the queue, it is
then picked up from there by bridge frame handling layer and finally
lands in br_dev_queue_push_xmit where it panics.

Cc: stable@kernel.org
Fixes: 48b491a ("net: hsr: fix mac_len checks")
Reported-by: syzbot+a81f2759d022496b40ab@syzkaller.appspotmail.com
Signed-off-by: Jakub Acs <acsjakub@amazon.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250819082842.94378-1-acsjakub@amazon.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
upcliujie pushed a commit to upcliujie/linux-imx that referenced this pull request May 1, 2026
Fix use-after-free potential issue when test android audio case on imx943.

During softirq handling in the ksoftirqd thread, vchan_complete was
invoked after fsl_edma_terminate_all had already freed the associated
DMA descriptor.

The dump log as follow:
BUG: KFENCE: use-after-free read in vchan_complete+0x184/0x5d4
Use-after-free read at 0x00000000d76f2fec (in kfence-nxp-imx#35):
  vchan_complete+0x184/0x5d4
  tasklet_action_common+0x4bc/0xd18
  tasklet_action+0x2c/0x3c
  handle_softirqs+0x24c/0x93c
  run_ksoftirqd+0x58/0x134
  smpboot_thread_fn+0x550/0x86c
  kthread+0x274/0x384
  ret_from_fork+0x10/0x20
kfence-nxp-imx#35: 0x0000000081a10a9b-0x00000000550f0593, size=256, cache=kmalloc-256
allocated by task 590 on cpu 3 at 935.888943s (1.964682s ago):
  fsl_edma_alloc_desc+0x50/0x2ec
  fsl_edma_prep_dma_cyclic+0x210/0x964
  snd_dmaengine_pcm_trigger+0x300/0x588
  dmaengine_pcm_trigger+0x18/0x28
  snd_soc_pcm_component_trigger+0x13c/0x420
  soc_pcm_trigger+0x298/0x4dc
  snd_pcm_start+0x264/0x3bc
  __snd_pcm_lib_xfer+0xd8c/0x10e8
  snd_pcm_xferi_frames_ioctl+0x194/0x338
  snd_pcm_common_ioctl+0x500/0x840
  snd_pcm_ioctl+0x80/0xa8
  __arm64_sys_ioctl+0x128/0x168
  invoke_syscall+0x80/0x218
  el0_svc_common+0x154/0x1c8
  do_el0_svc+0x48/0x58
  el0_svc+0x38/0x84
  el0t_64_sync_handler+0x70/0xbc
  el0t_64_sync+0x19c/0x1a0
freed by task 590 on cpu 3 at 937.702572s (0.308818s ago):
  fsl_edma_free_desc+0x12c/0x154
  vchan_dma_desc_free_list+0x84/0x2f0
  fsl_edma_terminate_all+0x43c/0x498
  snd_dmaengine_pcm_trigger+0x4a4/0x588
  dmaengine_pcm_trigger+0x18/0x28
  snd_soc_pcm_component_trigger+0x2a0/0x420
  soc_pcm_trigger+0x3fc/0x4dc
  snd_pcm_stop+0x170/0x378
  snd_pcm_drop+0x2ac/0x3bc
  snd_pcm_common_ioctl+0x524/0x840
  snd_pcm_ioctl+0x80/0xa8
  __arm64_sys_ioctl+0x128/0x168
  invoke_syscall+0x80/0x218
  el0_svc_common+0x154/0x1c8
  do_el0_svc+0x48/0x58
  el0_svc+0x38/0x84
  el0t_64_sync_handler+0x70/0xbc
  el0t_64_sync+0x19c/0x1a0
CPU: 0 UID: 0 PID: 17 Comm: ksoftirqd/0 Tainted: G    B
6.12.38-4k-ga59630015e55 nxp-imx#12 eb151bca9ac664bddce579f278ce4fa8a8677643
Tainted: [B]=BAD_PAGE
Hardware name: NXP i.MX943 EVK board (DT)

Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Joy Zou <joy.zou@nxp.com>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request May 2, 2026
[ Upstream commit f8cde98 ]

We shouldn't set real_dev to NULL because packets can be in transit and
xfrm might call xdo_dev_offload_ok() in parallel. All callbacks assume
real_dev is set.

 Example trace:
 kernel: BUG: unable to handle page fault for address: 0000000000001030
 kernel: bond0: (slave eni0np1): making interface the new active one
 kernel: #PF: supervisor write access in kernel mode
 kernel: #PF: error_code(0x0002) - not-present page
 kernel: PGD 0 P4D 0
 kernel: Oops: 0002 [#1] PREEMPT SMP
 kernel: CPU: 4 PID: 2237 Comm: ping Not tainted 6.7.7+ nxp-imx#12
 kernel: Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014
 kernel: RIP: 0010:nsim_ipsec_offload_ok+0xc/0x20 [netdevsim]
 kernel: bond0: (slave eni0np1): bond_ipsec_add_sa_all: failed to add SA
 kernel: Code: e0 0f 0b 48 83 7f 38 00 74 de 0f 0b 48 8b 47 08 48 8b 37 48 8b 78 40 e9 b2 e5 9a d7 66 90 0f 1f 44 00 00 48 8b 86 80 02 00 00 <83> 80 30 10 00 00 01 b8 01 00 00 00 c3 0f 1f 80 00 00 00 00 0f 1f
 kernel: bond0: (slave eni0np1): making interface the new active one
 kernel: RSP: 0018:ffffabde81553b98 EFLAGS: 00010246
 kernel: bond0: (slave eni0np1): bond_ipsec_add_sa_all: failed to add SA
 kernel:
 kernel: RAX: 0000000000000000 RBX: ffff9eb404e74900 RCX: ffff9eb403d97c60
 kernel: RDX: ffffffffc090de10 RSI: ffff9eb404e74900 RDI: ffff9eb3c5de9e00
 kernel: RBP: ffff9eb3c0a42000 R08: 0000000000000010 R09: 0000000000000014
 kernel: R10: 7974203030303030 R11: 3030303030303030 R12: 0000000000000000
 kernel: R13: ffff9eb3c5de9e00 R14: ffffabde81553cc8 R15: ffff9eb404c53000
 kernel: FS:  00007f2a77a3ad00(0000) GS:ffff9eb43bd00000(0000) knlGS:0000000000000000
 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 kernel: CR2: 0000000000001030 CR3: 00000001122ab000 CR4: 0000000000350ef0
 kernel: bond0: (slave eni0np1): making interface the new active one
 kernel: Call Trace:
 kernel:  <TASK>
 kernel:  ? __die+0x1f/0x60
 kernel: bond0: (slave eni0np1): bond_ipsec_add_sa_all: failed to add SA
 kernel:  ? page_fault_oops+0x142/0x4c0
 kernel:  ? do_user_addr_fault+0x65/0x670
 kernel:  ? kvm_read_and_reset_apf_flags+0x3b/0x50
 kernel: bond0: (slave eni0np1): making interface the new active one
 kernel:  ? exc_page_fault+0x7b/0x180
 kernel:  ? asm_exc_page_fault+0x22/0x30
 kernel:  ? nsim_bpf_uninit+0x50/0x50 [netdevsim]
 kernel: bond0: (slave eni0np1): bond_ipsec_add_sa_all: failed to add SA
 kernel:  ? nsim_ipsec_offload_ok+0xc/0x20 [netdevsim]
 kernel: bond0: (slave eni0np1): making interface the new active one
 kernel:  bond_ipsec_offload_ok+0x7b/0x90 [bonding]
 kernel:  xfrm_output+0x61/0x3b0
 kernel: bond0: (slave eni0np1): bond_ipsec_add_sa_all: failed to add SA
 kernel:  ip_push_pending_frames+0x56/0x80

Fixes: 18cb261 ("bonding: support hardware encryption offload to slaves")
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request May 2, 2026
[ Upstream commit a699781 ]

A sysfs reader can race with a device reset or removal, attempting to
read device state when the device is not actually present. eg:

     [exception RIP: qed_get_current_link+17]
  nxp-imx#8 [ffffb9e4f2907c48] qede_get_link_ksettings at ffffffffc07a994a [qede]
  nxp-imx#9 [ffffb9e4f2907cd8] __rh_call_get_link_ksettings at ffffffff992b01a3
 nxp-imx#10 [ffffb9e4f2907d38] __ethtool_get_link_ksettings at ffffffff992b04e4
 nxp-imx#11 [ffffb9e4f2907d90] duplex_show at ffffffff99260300
 nxp-imx#12 [ffffb9e4f2907e38] dev_attr_show at ffffffff9905a01c
 nxp-imx#13 [ffffb9e4f2907e50] sysfs_kf_seq_show at ffffffff98e0145b
 nxp-imx#14 [ffffb9e4f2907e68] seq_read at ffffffff98d902e3
 nxp-imx#15 [ffffb9e4f2907ec8] vfs_read at ffffffff98d657d1
 nxp-imx#16 [ffffb9e4f2907f00] ksys_read at ffffffff98d65c3f
 nxp-imx#17 [ffffb9e4f2907f38] do_syscall_64 at ffffffff98a052fb

 crash> struct net_device.state ffff9a9d21336000
    state = 5,

state 5 is __LINK_STATE_START (0b1) and __LINK_STATE_NOCARRIER (0b100).
The device is not present, note lack of __LINK_STATE_PRESENT (0b10).

This is the same sort of panic as observed in commit 4224cfd
("net-sysfs: add check for netdevice being present to speed_show").

There are many other callers of __ethtool_get_link_ksettings() which
don't have a device presence check.

Move this check into ethtool to protect all callers.

Fixes: d519e17 ("net: export device speed and duplex via sysfs")
Fixes: 4224cfd ("net-sysfs: add check for netdevice being present to speed_show")
Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com>
Link: https://patch.msgid.link/8bae218864beaa44ed01628140475b9bf641c5b0.1724393671.git.jamie.bainbridge@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request May 2, 2026
commit 9eee533 upstream.

KFENCE reports the following UAF:

 BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488

 Use-after-free read at 0x0000000024629571 (in kfence-nxp-imx#12):
  __pci_enable_msi_range+0x2c0/0x488
  pci_alloc_irq_vectors_affinity+0xec/0x14c
  pci_alloc_irq_vectors+0x18/0x28

 kfence-nxp-imx#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128

 allocated by task 81 on cpu 7 at 10.808142s:
  __kmem_cache_alloc_node+0x1f0/0x2bc
  kmalloc_trace+0x44/0x138
  msi_alloc_desc+0x3c/0x9c
  msi_domain_insert_msi_desc+0x30/0x78
  msi_setup_msi_desc+0x13c/0x184
  __pci_enable_msi_range+0x258/0x488
  pci_alloc_irq_vectors_affinity+0xec/0x14c
  pci_alloc_irq_vectors+0x18/0x28

 freed by task 81 on cpu 7 at 10.811436s:
  msi_domain_free_descs+0xd4/0x10c
  msi_domain_free_locked.part.0+0xc0/0x1d8
  msi_domain_alloc_irqs_all_locked+0xb4/0xbc
  pci_msi_setup_msi_irqs+0x30/0x4c
  __pci_enable_msi_range+0x2a8/0x488
  pci_alloc_irq_vectors_affinity+0xec/0x14c
  pci_alloc_irq_vectors+0x18/0x28

Descriptor allocation done in:
__pci_enable_msi_range
    msi_capability_init
        msi_setup_msi_desc
            msi_insert_msi_desc
                msi_domain_insert_msi_desc
                    msi_alloc_desc
                        ...

Freed in case of failure in __msi_domain_alloc_locked()
__pci_enable_msi_range
    msi_capability_init
        pci_msi_setup_msi_irqs
            msi_domain_alloc_irqs_all_locked
                msi_domain_alloc_locked
                    __msi_domain_alloc_locked => fails
                    msi_domain_free_locked
                        ...

That failure propagates back to pci_msi_setup_msi_irqs() in
msi_capability_init() which accesses the descriptor for unmasking in the
error exit path.

Cure it by copying the descriptor and using the copy for the error exit path
unmask operation.

[ tglx: Massaged change log ]

Fixes: bf6e054 ("genirq/msi: Provide msi_device_populate/destroy_sysfs()")
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Bjorn Heelgas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240624203729.1094506-1-smostafa@google.com
Signed-off-by: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request May 2, 2026
commit ac01c8c upstream.

AddressSanitizer found a use-after-free bug in the symbol code which
manifested as 'perf top' segfaulting.

  ==1238389==ERROR: AddressSanitizer: heap-use-after-free on address 0x60b00c48844b at pc 0x5650d8035961 bp 0x7f751aaecc90 sp 0x7f751aaecc80
  READ of size 1 at 0x60b00c48844b thread T193
      #0 0x5650d8035960 in _sort__sym_cmp util/sort.c:310
      #1 0x5650d8043744 in hist_entry__cmp util/hist.c:1286
      nxp-imx#2 0x5650d8043951 in hists__findnew_entry util/hist.c:614
      nxp-imx#3 0x5650d804568f in __hists__add_entry util/hist.c:754
      nxp-imx#4 0x5650d8045bf9 in hists__add_entry util/hist.c:772
      nxp-imx#5 0x5650d8045df1 in iter_add_single_normal_entry util/hist.c:997
      nxp-imx#6 0x5650d8043326 in hist_entry_iter__add util/hist.c:1242
      nxp-imx#7 0x5650d7ceeefe in perf_event__process_sample /home/matt/src/linux/tools/perf/builtin-top.c:845
      nxp-imx#8 0x5650d7ceeefe in deliver_event /home/matt/src/linux/tools/perf/builtin-top.c:1208
      nxp-imx#9 0x5650d7fdb51b in do_flush util/ordered-events.c:245
      nxp-imx#10 0x5650d7fdb51b in __ordered_events__flush util/ordered-events.c:324
      nxp-imx#11 0x5650d7ced743 in process_thread /home/matt/src/linux/tools/perf/builtin-top.c:1120
      nxp-imx#12 0x7f757ef1f133 in start_thread nptl/pthread_create.c:442
      nxp-imx#13 0x7f757ef9f7db in clone3 ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

When updating hist maps it's also necessary to update the hist symbol
reference because the old one gets freed in map__put().

While this bug was probably introduced with 5c24b67 ("perf
tools: Replace map->referenced & maps->removed_maps with map->refcnt"),
the symbol objects were leaked until c087e94 ("perf machine:
Fix refcount usage when processing PERF_RECORD_KSYMBOL") was merged so
the bug was masked.

Fixes: c087e94 ("perf machine: Fix refcount usage when processing PERF_RECORD_KSYMBOL")
Reported-by: Yunzhao Li <yunzhao@cloudflare.com>
Signed-off-by: Matt Fleming (Cloudflare) <matt@readmodwrite.com>
Cc: Ian Rogers <irogers@google.com>
Cc: kernel-team@cloudflare.com
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: stable@vger.kernel.org # v5.13+
Link: https://lore.kernel.org/r/20240815142212.3834625-1-matt@readmodwrite.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ossaleem pushed a commit to AirLinkOS/linux-imx that referenced this pull request May 2, 2026
commit 9af2efe upstream.

The fields in the hist_entry are filled on-demand which means they only
have meaningful values when relevant sort keys are used.

So if neither of 'dso' nor 'sym' sort keys are used, the map/symbols in
the hist entry can be garbage.  So it shouldn't access it
unconditionally.

I got a segfault, when I wanted to see cgroup profiles.

  $ sudo perf record -a --all-cgroups --synth=cgroup true

  $ sudo perf report -s cgroup

  Program received signal SIGSEGV, Segmentation fault.
  0x00005555557a8d90 in map__dso (map=0x0) at util/map.h:48
  48		return RC_CHK_ACCESS(map)->dso;
  (gdb) bt
  #0  0x00005555557a8d90 in map__dso (map=0x0) at util/map.h:48
  #1  0x00005555557aa39b in map__load (map=0x0) at util/map.c:344
  nxp-imx#2  0x00005555557aa592 in map__find_symbol (map=0x0, addr=140736115941088) at util/map.c:385
  nxp-imx#3  0x00005555557ef000 in hists__findnew_entry (hists=0x555556039d60, entry=0x7fffffffa4c0, al=0x7fffffffa8c0, sample_self=true)
      at util/hist.c:644
  nxp-imx#4  0x00005555557ef61c in __hists__add_entry (hists=0x555556039d60, al=0x7fffffffa8c0, sym_parent=0x0, bi=0x0, mi=0x0, ki=0x0,
      block_info=0x0, sample=0x7fffffffaa90, sample_self=true, ops=0x0) at util/hist.c:761
  nxp-imx#5  0x00005555557ef71f in hists__add_entry (hists=0x555556039d60, al=0x7fffffffa8c0, sym_parent=0x0, bi=0x0, mi=0x0, ki=0x0,
      sample=0x7fffffffaa90, sample_self=true) at util/hist.c:779
  nxp-imx#6  0x00005555557f00fb in iter_add_single_normal_entry (iter=0x7fffffffa900, al=0x7fffffffa8c0) at util/hist.c:1015
  nxp-imx#7  0x00005555557f09a7 in hist_entry_iter__add (iter=0x7fffffffa900, al=0x7fffffffa8c0, max_stack_depth=127, arg=0x7fffffffbce0)
      at util/hist.c:1260
  nxp-imx#8  0x00005555555ba7ce in process_sample_event (tool=0x7fffffffbce0, event=0x7ffff7c14128, sample=0x7fffffffaa90, evsel=0x555556039ad0,
      machine=0x5555560388e8) at builtin-report.c:334
  nxp-imx#9  0x00005555557b30c8 in evlist__deliver_sample (evlist=0x555556039010, tool=0x7fffffffbce0, event=0x7ffff7c14128,
      sample=0x7fffffffaa90, evsel=0x555556039ad0, machine=0x5555560388e8) at util/session.c:1232
  nxp-imx#10 0x00005555557b32bc in machines__deliver_event (machines=0x5555560388e8, evlist=0x555556039010, event=0x7ffff7c14128,
      sample=0x7fffffffaa90, tool=0x7fffffffbce0, file_offset=110888, file_path=0x555556038ff0 "perf.data") at util/session.c:1271
  nxp-imx#11 0x00005555557b3848 in perf_session__deliver_event (session=0x5555560386d0, event=0x7ffff7c14128, tool=0x7fffffffbce0,
      file_offset=110888, file_path=0x555556038ff0 "perf.data") at util/session.c:1354
  nxp-imx#12 0x00005555557affaf in ordered_events__deliver_event (oe=0x555556038e60, event=0x555556135aa0) at util/session.c:132
  nxp-imx#13 0x00005555557bb605 in do_flush (oe=0x555556038e60, show_progress=false) at util/ordered-events.c:245
  nxp-imx#14 0x00005555557bb95c in __ordered_events__flush (oe=0x555556038e60, how=OE_FLUSH__ROUND, timestamp=0) at util/ordered-events.c:324
  nxp-imx#15 0x00005555557bba46 in ordered_events__flush (oe=0x555556038e60, how=OE_FLUSH__ROUND) at util/ordered-events.c:342
  nxp-imx#16 0x00005555557b1b3b in perf_event__process_finished_round (tool=0x7fffffffbce0, event=0x7ffff7c15bb8, oe=0x555556038e60)
      at util/session.c:780
  nxp-imx#17 0x00005555557b3b27 in perf_session__process_user_event (session=0x5555560386d0, event=0x7ffff7c15bb8, file_offset=117688,
      file_path=0x555556038ff0 "perf.data") at util/session.c:1406

As you can see the entry->ms.map was NULL even if he->ms.map has a
value.  This is because 'sym' sort key is not given, so it cannot assume
whether he->ms.sym and entry->ms.sym is the same.  I only checked the
'sym' sort key here as it implies 'dso' behavior (so maps are the same).

Fixes: ac01c8c ("perf hist: Update hist symbol when updating maps")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Matt Fleming <matt@readmodwrite.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240826221045.1202305-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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