Messages in this thread | | | Date | Tue, 26 Jan 2021 13:52:17 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [printk] b031a684bf: INFO:rcu_tasks_detected_stalls_on_tasks |
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On (21/01/22 17:21), Petr Mladek wrote: [..] > > [ 952.271861] ? firmware_map_remove (kbuild/src/consumer/kernel/sched/core.c:4411) > > [ 952.272870] ? ksys_write (kbuild/src/consumer/fs/read_write.c:661) > > [ 952.273709] schedule (kbuild/src/consumer/include/linux/thread_info.h:84 (discriminator 1) kbuild/src/consumer/include/linux/sched.h:1897 (discriminator 1) kbuild/src/consumer/kernel/sched/core.c:4608 (discriminator 1)) > > [ 952.274495] exit_to_user_mode_prepare (kbuild/src/consumer/kernel/entry/common.c:160 kbuild/src/consumer/kernel/entry/common.c:191) > > [ 952.275516] syscall_exit_to_user_mode (kbuild/src/consumer/arch/x86/include/asm/jump_label.h:41 kbuild/src/consumer/arch/x86/include/asm/nospec-branch.h:288 kbuild/src/consumer/arch/x86/include/asm/entry-common.h:80 kbuild/src/consumer/kernel/entry/common.c:133 kbuild/src/consumer/kernel/entry/common.c:268) > > > [ 952.276650] entry_INT80_compat (kbuild/src/consumer/arch/x86/entry/entry_64_compat.S:412) > > [ 952.277673] RIP: 0023:0xf7f93a02 > > [ 952.278497] RSP: 002b:00000000ff8db2f4 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 > > [ 952.280235] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 000000005666f220 > > [ 952.281813] RDX: 0000000000000001 RSI: 00000000f7f59d60 RDI: 0000000000000001 > > [ 952.283347] RBP: 000000005666f220 R08: 0000000000000000 R09: 0000000000000000 > > [ 952.284919] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > > [ 952.286507] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > > [ 952.294673] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.328047] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.336658] > > [ 352.572231] > > [ 98.585525] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.336693] > > [ 952.359450] > > [ 352.594642] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.359483] > > [ 952.377678] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.409955] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.412504] > > [ 352.610470] > > [ 98.605699] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.412531] > > [ 952.444293] > > [ 352.625170] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.444328] > > [ 952.453669] tasks-torture:torture_onoff task: online 0 failed: errno -5 > > [ 952.480340] > > [ 352.638172] > > > > To reproduce: > > > > # build kernel > > cd linux > > cp config-5.10.0-rc5-gb031a684bfd0 .config > > make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage > > > > git clone https://github.com/intel/lkp-tests.git > > cd lkp-tests > > bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email > > I am still struggling with lkp-tests. I have never used them before > and have troubles to get it working. It asks for a newer qemu at > the moment. It means that I am still not able to reproduce it :-/ > > I wonder if there is a way to reproduce this without lpk-tests > framework.
AFAIU this is just 'modprobe rcutorture'
-ss
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