diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2021-03-31 12:44:50 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-04-05 12:30:07 +0300 |
| commit | 08edb9683e47f5183aed9aa3f926292b54c278c1 (patch) | |
| tree | e611ef02ff2d1043968012290bb2870b2a3706bd /arch/s390 | |
| parent | 7a2f91441b2c1d81b77c1cd816a4659f4abc9cbe (diff) | |
| download | linux-08edb9683e47f5183aed9aa3f926292b54c278c1.tar.xz | |
s390/unwind: add machine check handler stack
Fixes: b61b1595124a ("s390: add stack for machine check handler")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/stacktrace.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/dumpstack.c | 12 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h index ee056f4a4fa3..2b543163d90a 100644 --- a/arch/s390/include/asm/stacktrace.h +++ b/arch/s390/include/asm/stacktrace.h @@ -12,6 +12,7 @@ enum stack_type { STACK_TYPE_IRQ, STACK_TYPE_NODAT, STACK_TYPE_RESTART, + STACK_TYPE_MCCK, }; struct stack_info { diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 0dc4b258b98d..db1bc00229ca 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -79,6 +79,15 @@ static bool in_nodat_stack(unsigned long sp, struct stack_info *info) return in_stack(sp, info, STACK_TYPE_NODAT, top - THREAD_SIZE, top); } +static bool in_mcck_stack(unsigned long sp, struct stack_info *info) +{ + unsigned long frame_size, top; + + frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs); + top = S390_lowcore.mcck_stack + frame_size; + return in_stack(sp, info, STACK_TYPE_MCCK, top - THREAD_SIZE, top); +} + static bool in_restart_stack(unsigned long sp, struct stack_info *info) { unsigned long frame_size, top; @@ -108,7 +117,8 @@ int get_stack_info(unsigned long sp, struct task_struct *task, /* Check per-cpu stacks */ if (!in_irq_stack(sp, info) && !in_nodat_stack(sp, info) && - !in_restart_stack(sp, info)) + !in_restart_stack(sp, info) && + !in_mcck_stack(sp, info)) goto unknown; recursion_check: |