The following kernel panic noticed While running LTP tracing tests on qemu-i386.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

[ 0.000000] Linux version 6.3.0-rc1 (tuxmake@tuxmake) (Debian clang version 16.0.0 (++20230228093516+60692a66ced6-1~exp1~20230228093525.41), Debian LLD 16.0.0) #1 SMP PREEMPT_DYNAMIC @1678136838 ... LTP tracing tests Running tests....... <6>[ 35.957375] traps: systemd-network[287] trap invalid opcode ip:b7d99bef sp:bfcf8e20 error:0 in libsystemd-shared-250.so[b7c33000+1c0000] <6>[ 39.887678] traps: systemd-network[330] trap invalid opcode ip:b7db0bef sp:bfb6ab00 error:0 in libsystemd-shared-250.so[b7c4a000+1c0000] <4>[ 41.883172] clocksource: timekeeping watchdog on CPU0: Marking clocksource 'tsc' as unstable because the skew is too large: <4>[ 41.885195] clocksource: 'acpi_pm' wd_nsec: 633206175 wd_now: 13fe92 wd_last: f168b4 mask: ffffff <4>[ 41.886363] clocksource: 'tsc' cs_nsec: 5320282620 cs_now: 1cbab6bece cs_last: 19231a48ea mask: ffffffffffffffff <4>[ 41.887503] clocksource: Clocksource 'tsc' skewed 4687076445 ns (4687 ms) over watchdog 'acpi_pm' interval of 633206175 ns (633 ms) <4>[ 41.888583] clocksource: 'tsc' is current clocksource. <6>[ 41.889615] tsc: Marking TSC unstable due to clocksource watchdog <4>[ 41.894933] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'. <6>[ 41.895623] sched_clock: Marking unstable (41348265135, 546543322)<-(41919545028, -24729054) <4>[ 41.905093] clocksource: Checking clocksource tsc synchronization from CPU 1 to CPUs 0. <6>[ 41.921496] clocksource: Switched to clocksource acpi_pm <47>[ 42.122074] systemd-journald[108]: Successfully sent stream file descriptor to service manager.

ftrace_regression01 1 TPASS: Finished running the test

<4>[ 43.795642] int3: 0000 [#1] PREEMPT SMP <4>[ 43.795642] CPU: 0 PID: 331 Comm: systemd-network Not tainted 6.3.0-rc1 #1 <4>[ 43.795642] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 <4>[ 43.795642] EIP: vm_area_free+0x1/0x20 <4>[ 43.795642] Code: e5 85 1d 00 85 c0 74 14 b9 11 00 00 00 89 c7 f3 a5 89 c1 83 c1 24 89 48 24 89 48 28 5e 5f 5d c3 90 90 90 90 90 90 90 90 90 3e <8d> 74 26 00 55 89 e5 89 c2 a1 ac 99 82 d3 e8 fc 8f 1d 00 5d c3 90 <4>[ 43.795642] EAX: c243bab0 EBX: c243bab0 ECX: 00000000 EDX: c23cb9c0 <4>[ 43.795642] ESI: 00000000 EDI: 000001c0 EBP: c25c1e24 ESP: c25c1dd0 <4>[ 43.795642] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00000246 <4>[ 43.795642] CR0: 80050033 CR2: 081d764c CR3: 02ce1000 CR4: 000006d0 <4>[ 43.795642] Call Trace: <4>[ 43.795642] ? do_vmi_align_munmap+0x26e/0x380 <4>[ 43.795642] mmap_region+0x26e/0x880 <4>[ 43.795642] ? arch_ftrace_ops_list_func+0x20/0x1a0 <4>[ 43.795642] ? ftrace_call+0x5/0x13 <4>[ 43.795642] do_mmap+0x33f/0x4b0 <4>[ 43.795642] ? do_mmap+0x3f6/0x4b0 <4>[ 43.795642] vm_mmap_pgoff+0x9b/0x120 <4>[ 43.795642] ksys_mmap_pgoff+0x15d/0x1b0 <4>[ 43.795642] __ia32_sys_mmap_pgoff+0x21/0x30 <4>[ 43.795642] do_int80_syscall_32+0x39/0x74 <4>[ 43.795642] entry_INT80_32+0xf0/0xf0 <4>[ 43.795642] EIP: 0xb7f7d9c1 <4>[ 43.795642] Code: c3 8d b4 26 00 00 00 00 90 8b 5c 24 08 01 c3 8b 6c 2b 40 89 2f eb b6 66 90 f3 0f 1e fb 53 57 55 8b 1f 8b 6f 08 8b 7f 04 cd 80 <5d> 5f 5b c3 66 90 66 90 66 90 66 90 66 90 90 f3 0f 1e fb e8 5a 00 <4>[ 43.795642] EAX: ffffffda EBX: b7c94000 ECX: 001c0000 EDX: 00000005 <4>[ 43.795642] ESI: 00000812 EDI: 00000004 EBP: 0000003b ESP: bff393e0 <4>[ 43.795642] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b EFLAGS: 00000202 <4>[ 43.795642] Modules linked in: <4>[ 43.795642] \ ---[ end trace 0000000000000000 ]--- <4>[ 43.795642] EIP: vm_area_free+0x1/0x20 <4>[ 43.795642] Code: e5 85 1d 00 85 c0 74 14 b9 11 00 00 00 89 c7 f3 a5 89 c1 83 c1 24 89 48 24 89 48 28 5e 5f 5d c3 90 90 90 90 90 90 90 90 90 3e <8d> 74 26 00 55 89 e5 89 c2 a1 ac 99 82 d3 e8 fc 8f 1d 00 5d c3 90 <4>[ 43.795642] EAX: c243bab0 EBX: c243bab0 ECX: 00000000 EDX: c23cb9c0 <4>[ 43.795642] ESI: 00000000 EDI: 000001c0 EBP: c25c1e24 ESP: c25c1dd0 <4>[ 43.795642] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00000246 <4>[ 43.795642] CR0: 80050033 CR2: 081d764c CR3: 02ce1000 CR4: 000006d0 <0>[ 43.795642] Kernel panic - not syncing: Fatal exception in interrupt <0>[ 43.795642] Kernel Offset: disabled

test log: ----- - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.3-rc1-2-g8... - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.3-rc1-2-g8...

steps to reproduce: -------------- # To install tuxrun on your system globally: # sudo pip3 install -U tuxrun==0.37.2 # # See https://tuxrun.org/ for complete documentation.

tuxrun \ --runtime podman \ --device qemu-i386 \ --kernel https://storage.tuxsuite.com/public/linaro/lkft/builds/2MemUurDShqDi3xoAvTkn... \ --modules https://storage.tuxsuite.com/public/linaro/lkft/builds/2MemUurDShqDi3xoAvTkn... \ --rootfs https://storage.tuxsuite.com/public/linaro/lkft/oebuilds/2MV9clY6B5uyK3SNAIP... \ --parameters SKIPFILE=skipfile-lkft.yaml \ --parameters SHARD_NUMBER=4 \ --parameters SHARD_INDEX=1 \ --image docker.io/lavasoftware/lava-dispatcher:2023.01.0020.gc1598238f \ --tests ltp-tracing \ --timeouts boot=15 ltp-tracing=30

-- Linaro LKFT https://lkft.linaro.org