On 28/04/26 5:48 pm, Venkat Rao Bagalkote wrote:
Greetings!!
IBM CI has reported a kernel crash while running
selftests/powerpc/signal on a POWER9 pSeries system.
I attempted to reproduce this issue manually, but was not successful
so far.
I’m now able to reproduce this issue reliably and consistently. The
reproduction steps are simple:
Run selftests/powerpc/signal
Regards,
Venkat.
Below are the details of the crash as reported by CI.
Crash Details:
[ 9798.880148] Unexpected TM Bad Thing exception at c00000000000dbac
(msr 0x8000000302a03031) tm_scratch=800000010280b033
[ 9798.880160] Oops: Unrecoverable exception, sig: 6 [#1]
[ 9798.880165] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=8192 NUMA pSeries
[ 9798.880173] Modules linked in: nvram(E) rpadlpar_io(E) rpaphp(E) ...
[ 9798.880233] CPU: 8 UID: 0 PID: 1039530 Comm: sigfuz
Tainted: G E 7.1.0-rc1 #1 PREEMPT
[ 9798.880245] Hardware name: IBM,8375-42A POWER9 (architected)
hv:phyp pSeries
[ 9798.880251] NIP: c00000000000dbac LR: 0000000010001e58
[ 9798.880262] MSR: 8000000302a03031 <SF,VEC,VSX,FP,ME,IR,DR,LE,TM[SE]>
Call Trace:
NIP [c00000000000dbac] interrupt_return_srr_kernel+0x15c/0x18c
Call Trace:
tm_reclaim_thread
flush_tmregs_to_thread
vsr_get
regset_get_alloc
fill_thread_core_info.isra.0
fill_note_info
elf_core_dump
coredump_write
do_coredump
vfs_coredump
get_signal
do_signal
do_notify_resume
interrupt_exit_user_prepare_main
interrupt_exit_user_prepare
interrupt_return_srr_user
Please let me know if further details are required.
If you happen to fix this issue, please add below tag.
Reported-by: Venkat Rao Bagalkote <[email protected]>
Regards,
Venkat.
