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Subject[arm64] kernel BUG at kernel/seccomp.c:1309!
While booting arm64 kernel the following kernel BUG noticed on several arm64
devices running linux next 20201123 tag kernel.


$ git log --oneline next-20201120..next-20201123 -- kernel/seccomp.c
5c5c5fa055ea Merge remote-tracking branch 'seccomp/for-next/seccomp'
bce6a8cba7bf Merge branch 'linus'
7ef95e3dbcee Merge branch 'for-linus/seccomp' into for-next/seccomp
fab686eb0307 seccomp: Remove bogus __user annotations
0d8315dddd28 seccomp/cache: Report cache data through /proc/pid/seccomp_cache
8e01b51a31a1 seccomp/cache: Add "emulator" to check if filter is constant allow
f9d480b6ffbe seccomp/cache: Lookup syscall allowlist bitmap for fast path
23d67a54857a seccomp: Migrate to use SYSCALL_WORK flag


Please find these easy steps to reproduce the kernel build and boot.

step to reproduce:
# please install tuxmake
# sudo pip3 install -U tuxmake
# cd linux-next
# tuxmake --runtime docker --target-arch arm --toolchain gcc-9
--kconfig defconfig --kconfig-add
https://builds.tuxbuild.com/1kgWN61pS5M35vjnVfDSvOOPd38/config

# Boot the arm64 on any arm64 devices.
# you will notice the below BUG

crash log details:
-----------------------
[ 6.941012] ------------[ cut here ]------------
Found device /dev/ttyAMA3.
[ 6.947587] lima f4080000.gpu: mod rate = 500000000
[ 6.955422] kernel BUG at kernel/seccomp.c:1309!
[ 6.955430] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 6.955437] Modules linked in: cec rfkill wlcore_sdio(+) kirin_drm
dw_drm_dsi lima(+) drm_kms_helper gpu_sched drm fuse
[ 6.955481] CPU: 2 PID: 291 Comm: systemd-udevd Not tainted
5.10.0-rc4-next-20201123 #2
[ 6.955485] Hardware name: HiKey Development Board (DT)
[ 6.955493] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[ 6.955510] pc : __secure_computing+0xe0/0xe8
[ 6.958171] mmc_host mmc2: Bus speed (slot 0) = 24800000Hz (slot
req 400000Hz, actual 400000HZ div = 31)
[ 6.965975] [drm] Initialized lima 1.1.0 20191231 for f4080000.gpu on minor 0
[ 6.970176] lr : syscall_trace_enter+0x1cc/0x218
[ 6.970181] sp : ffff800012d8be10
[ 6.970185] x29: ffff800012d8be10 x28: ffff00000092cb00
[ 6.970195] x27: 0000000000000000 x26: 0000000000000000
[ 6.970203] x25: 0000000000000000 x24: 0000000000000000
[ 6.970210] x23: 0000000060000000 x22: 0000000000000202
[ 7.011614] mmc_host mmc2: Bus speed (slot 0) = 24800000Hz (slot
req 25000000Hz, actual 24800000HZ div = 0)
[ 7.016457]
[ 7.016461] x21: 0000000000000200 x20: ffff00000092cb00
[ 7.016470] x19: ffff800012d8bec0 x18: 0000000000000000
[ 7.016478] x17: 0000000000000000 x16: 0000000000000000
[ 7.016485] x15: 0000000000000000 x14: 0000000000000000
[ 7.054116] mmc_host mmc2: Bus speed (slot 0) = 24800000Hz (slot
req 400000Hz, actual 400000HZ div = 31)
[ 7.056715]
[ 7.103444] mmc_host mmc2: Bus speed (slot 0) = 24800000Hz (slot
req 25000000Hz, actual 24800000HZ div = 0)
[ 7.105105] x13: 0000000000000000 x12: 0000000000000000
[ 7.125849] x11: 0000000000000000 x10: 0000000000000000
[ 7.125858] x9 : ffff80001001bcbc x8 : 0000000000000000
[ 7.125865] x7 : 0000000000000000 x6 : 0000000000000000
[ 7.125871] x5 : 0000000000000000 x4 : 0000000000000000
[ 7.125879] x3 : 0000000000000000 x2 : ffff00000092cb00
[ 7.125886] x1 : 0000000000000000 x0 : 0000000000000116
[ 7.125896] Call trace:
] Found device /dev/ttyAMA2.
[ 7.125908] __secure_computing+0xe0/0xe8
[ 7.125918] syscall_trace_enter+0x1cc/0x218
[ 7.125927] el0_svc_common.constprop.0+0x19c/0x1b8
[ 7.125933] do_el0_svc+0x2c/0x98
[ 7.125940] el0_sync_handler+0x180/0x188
[ 7.125946] el0_sync+0x174/0x180
[ 7.125958] Code: d2800121 97ffd9a9 d2800120 97fbf1a9 (d4210000)
[ 7.199584] ---[ end trace 463debbc21f0c7b5 ]---
[ 7.204205] note: systemd-udevd[291] exited with preempt_count 1
[ 7.210733] ------------[ cut here ]------------
[ 7.215451] WARNING: CPU: 2 PID: #
0 at kernel/rcu/tree.c:632 rcu_eqs_enter.isra.0+0x134/0x140
[ 7.223927] Modules linked in: cec rfkill wlcore_sdio kirin_drm
dw_drm_dsi lima drm_kms_helper gpu_sched drm fuse
[ 7.234295] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D
5.10.0-rc4-next-20201123 #2
[ 7.243252] Hardware name: HiKey Development Board (DT)
[ 7.248561] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO BTYPE=--)
[ 7.254638] pc : rcu_eqs_enter.isra.0+0x134/0x140
[ 7.259350] lr : rcu_idle_enter+0x18/0x28
[ 7.263362] sp : ffff8000128e3e80
[ 7.266678] x29: ffff8000128e3e80 x28: 0000000000000000
[ 7.272001] x27: 0000000000000000 x26: ffff000001b79080
[ 7.277321] x25: 0000000000000000 x24: 00000001adc9b310
[ 7.282641] x23: 0000000000000000 x22: ffff000001b79080
[ 7.287970] x21: ffff000077b24b00 x20: ffff000001b79098
[ 7.287979] x19: ffff800011c7ab40 x18: 0000000000000010
[ 7.287986] x17: 0000000000000000 x16: 0000000000000000
[ 7.287993] x15: ffff00000092cf98 x14: 0720072007200720
[ 7.288001] x13: 0720072007200720 x12: 00000000000003c6
[ 7.288008] x11: 071c71c71c71c71c x10: 00000000000003c6
[ 7.288016] x9 : ffff800010df267c x8 : 000000000000048c
[ 7.288023] x7 : 0000000000000c6f x6 : 0000000000009c3f
[ 7.288030] x5 : 00000000ffffffff x4 : 0000000000000015
[ 7.288038] x3 : 000000000022b7f0 x2 : 4000000000000002
[ 7.288046] x1 : 4000000000000000 x0 : ffff000077b26b40
[ 7.288054] Call trace:
[ 7.288064] rcu_eqs_enter.isra.0+0x134/0x140
#
[ 7.288069] rcu_idle_enter+0x18/0x28
[ 7.288078] cpuidle_enter_state+0x34c/0x438
[ 7.288084] cpuidle_enter+0x40/0x58
[ 7.288092] call_cpuidle+0x24/0x50
Reached target Sockets.
[ 7.288108] do_idle+0x228/0x290
[ 7.375468] cpu_startup_entry+0x30/0x78
[ 7.379397] secondary_start_kernel+0x158/0x190
[ 7.383930] ---[ end trace 463debbc21f0c7b6 ]---
[ OK ] Reached target B#

Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>

full test log,
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20201123/testrun/3478150/suite/linux-log-parser/test/check-kernel-bug-1968549/log
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20201123/testrun/3478177/suite/linux-log-parser/test/check-kernel-bug-1968583/log
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20201123/testrun/3478197/suite/linux-log-parser/test/check-kernel-bug-147858/log

metadata:
git branch: master
git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
git commit: 62918e6fd7b5751c1285c7f8c6cbd27eb6600c02
git describe: next-20201123
make_kernelversion: 5.10.0-rc4
kernel-config: https://builds.tuxbuild.com/1kgWN61pS5M35vjnVfDSvOOPd38/config


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

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