Heiko Carstens 1422de15d9 s390/stackstrace: Detect vdso stack frames ...

[ Upstream commit 62b672c4ba ]

Clear the backchain of the extra stack frame added by the vdso user wrapper
code. This allows the user stack walker to detect and skip the non-standard
stack frame. Without this an incorrect instruction pointer would be added
to stack traces, and stack frame walking would be continued with a more or
less random back chain.

Fixes: aa44433ac4 ("s390: add USER_STACKTRACE support")
Reviewed-by: Jens Remus <jremus@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>

2024-06-12 11:39:24 +02:00

..

asm

s390/stackstrace: Detect vdso stack frames

2024-06-12 11:39:24 +02:00

uapi/asm

KVM: define __KVM_HAVE_GUEST_DEBUG unconditionally

2024-02-08 08:41:06 -05:00