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charset="utf-8" Hello, we don't have enough knowledge how to connect the changes in 55d1ecceb8 with the random issue we found. we tried rebuild kernel and rerun more till to 2= 00 times for both 55d1ecceb8 and its parent, still observed the issue on 55d1e= cceb8 but clean on parent. 1e6b72e60a5a16dd 55d1ecceb8d6a5c9ceff7c65280 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | :200 29% 58:200 dmesg.INFO:task_blocked_for_m= ore_than#seconds the config diff is: --- /pkg/linux/i386-randconfig-011-20241220/gcc-12/1e6b72e60a5a16ddda9c0669= da7538f497838d0a/.config 2024-12-24 17:07:56.621157765 +0800 +++ /pkg/linux/i386-randconfig-011-20241220/gcc-12/55d1ecceb8d6a5c9ceff7c65= 28075bd0ce4e8366/.config 2024-12-24 15:40:46.814065639 +0800 @@ -5700,8 +5700,6 @@ CONFIG_CRYPTO_HASH_INFO=3Dy CONFIG_CRYPTO_AES_NI_INTEL=3Dy CONFIG_CRYPTO_SERPENT_SSE2_586=3Dy CONFIG_CRYPTO_TWOFISH_586=3Dy -CONFIG_CRYPTO_CRC32C_INTEL=3Dy -# CONFIG_CRYPTO_CRC32_PCLMUL is not set # end of Accelerated Cryptographic Algorithms for CPU (x86) CONFIG_CRYPTO_HW=3Dy @@ -5798,7 +5796,10 @@ CONFIG_CRC_T10DIF=3Dy CONFIG_CRC64_ROCKSOFT=3Dy CONFIG_CRC_ITU_T=3Dy CONFIG_CRC32=3Dy +CONFIG_ARCH_HAS_CRC32=3Dy # CONFIG_CRC32_SELFTEST is not set +# CONFIG_CRC32_IMPL_ARCH_PLUS_SLICEBY8 is not set +# CONFIG_CRC32_IMPL_ARCH_PLUS_SLICEBY1 is not set # CONFIG_CRC32_IMPL_SLICEBY8 is not set CONFIG_CRC32_IMPL_SLICEBY4=3Dy # CONFIG_CRC32_IMPL_SLICEBY1 is not set so we still make out below report FYI. kernel test robot noticed "INFO:task_blocked_for_more_than#seconds" on: commit: 55d1ecceb8d6a5c9ceff7c6528075bd0ce4e8366 ("x86/crc32: expose CRC32 = functions through lib") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2] in testcase: trinity version:=20 with following parameters: runtime: 300s group: group-00 nr_groups: 5 config: i386-randconfig-011-20241220 compiler: gcc-12 test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G (please refer to attached dmesg/kmsg for entire log/backtrace) If you fix the issue in a separate patch/commit (i.e. not just a new versio= n of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202412251418.8e78094d-lkp@intel.com [ 996.907142][ T25] INFO: task swapper:1 blocked for more than 491 secon= ds. [ 996.911246][ T25] Not tainted 6.13.0-rc1-00013-g55d1ecceb8d6 #1 [ 996.940897][ T25] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" d= isables this message. [ 996.960487][ T25] task:swapper state:D stack:0 pid:1 t= gid:1 ppid:0 flags:0x00004000 [ 997.029537][ T25] Call Trace: [ 997.046615][ T25] __schedule (kernel/sched/core.c:5372 kernel/sched/core.= c:6756) [ 997.060058][ T25] ? async_synchronize_cookie_domain (kernel/async.c:317 (= discriminator 9)) [ 997.070156][ T25] schedule (arch/x86/include/asm/preempt.h:26 kernel/sche= d/core.c:5865 kernel/sched/core.c:5885 kernel/sched/core.c:6834 kernel/sche= d/core.c:6848) [ 997.079936][ T25] async_synchronize_cookie_domain (kernel/async.c:317 (di= scriminator 9)) [ 997.090893][ T25] ? do_wait_intr_irq (kernel/sched/wait.c:383) [ 997.109522][ T25] wait_for_initramfs (init/initramfs.c:767) [ 997.118460][ T25] populate_rootfs (init/initramfs.c:778) [ 997.126493][ T25] do_one_initcall (init/main.c:1266) [ 997.136390][ T25] ? do_header (init/initramfs.c:771) [ 997.147147][ T25] ? rdinit_setup (init/main.c:1312) [ 997.160654][ T25] ? rcu_is_watching (kernel/rcu/tree.c:738) [ 997.178488][ T25] do_initcalls (init/main.c:1327 init/main.c:1344) [ 997.195442][ T25] kernel_init_freeable (init/main.c:1579) [ 997.199167][ T25] ? rest_init (init/main.c:1458) [ 997.208072][ T25] kernel_init (init/main.c:1468) [ 997.218814][ T25] ret_from_fork (arch/x86/kernel/process.c:153) [ 997.225966][ T25] ? rest_init (init/main.c:1458) [ 997.231504][ T25] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 997.240527][ T25] entry_INT80_32 (arch/x86/entry/entry_32.S:942) [ 997.318483][ T25] [ 997.318483][ T25] Showing all locks held in the system: [ 997.346428][ T25] 1 lock held by kworker/0:0/6: [ 997.350161][ T25] 4 locks held by kworker/u4:0/9: [ 997.396160][ T25] 1 lock held by khungtaskd/25: [ 997.399871][ T25] #0: 83f91ab0 (rcu_read_lock){....}-{1:3}, at: debug_sho= w_all_locks (include/linux/rcupdate.h:337 include/linux/rcupdate.h:849 kern= el/locking/lockdep.c:6744) [ 997.478673][ T25] [ 997.501376][ T25] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D [ 997.501376][ T25] [ 1161.445030][ C0] workqueue: psi_avgs_work hogged CPU for >10000us 11 = times, consider switching to WQ_UNBOUND BUG: kernel hang in boot stage The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241225/202412251418.8e78094d-lkp@= intel.com --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki