diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2025-07-01 18:12:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:33 +0200 |
| commit | 419733db212d4842af1e8338d820aafe5e154c9b (patch) | |
| tree | 7b4c1b0e5f6232376fe29fa1580dddeb85f5710a | |
| parent | 18ca0c91dc513ecc9a22e0a829d441ea12777cfb (diff) | |
s390/early: Copy last breaking event address to pt_regs
[ Upstream commit 7cf636c99b257c1b4b12066ab34fd5f06e8d892f ]
In case of an early crash the early program check handler also prints the
last breaking event address which is contained within the pt_regs
structure. However it is not initialized, and therefore a more or less
random value is printed in case of a crash.
Copy the last breaking event address from lowcore to pt_regs in case of an
early program check to address this. This also makes it easier to analyze
early crashes.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/s390/kernel/early.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 62f8f5a750a3..0c054e2d1e03 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -183,6 +183,7 @@ void __init __do_early_pgm_check(struct pt_regs *regs) regs->int_code = lc->pgm_int_code; regs->int_parm_long = lc->trans_exc_code; + regs->last_break = lc->pgm_last_break; ip = __rewind_psw(regs->psw, regs->int_code >> 16); /* Monitor Event? Might be a warning */ |