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
