Sven Schnelle cc8b2e0d5b s390/vdso: filter out -mstack-guard and -mstack-size ... commit 00b55eaf45 upstream. When CONFIG_VMAP_STACK is disabled, the user can enable CONFIG_STACK_CHECK, which adds a stack overflow check to each C function in the kernel. This is also done for functions in the vdso page. These functions are run in user context and user stack sizes are usually different to what the kernel uses. This might trigger the stack check although the stack size is valid. Therefore filter the -mstack-guard and -mstack-size flags when compiling vdso C files. Cc: stable@kernel.org # 5.10+ Fixes: 4bff8cb545 ("s390: convert to GENERIC_VDSO") Reported-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-11-25 09:48:45 +01:00
..
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Makefile	s390/vdso: filter out -mstack-guard and -mstack-size	2021-11-25 09:48:45 +01:00
gen_vdso_offsets.sh	s390/vdso: add minimal compat vdso	2021-07-08 15:37:28 +02:00
getcpu.c	s390/vdso: use union tod_clock	2021-02-13 17:17:54 +01:00
note.S	s390: add a few more SPDX identifiers	2017-12-05 07:51:09 +01:00
vdso.h	s390/vdso: add missing prototypes for vdso functions	2020-11-30 14:10:50 +01:00
vdso64.lds.S	s390/vdso: add .got.plt in vdso linker script	2021-07-30 17:08:21 +02:00
vdso64_generic.c	s390/vdso: add missing prototypes for vdso functions	2020-11-30 14:10:50 +01:00
vdso64_wrapper.S	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vdso_user_wrapper.S	s390/vdso64: add sigreturn,rt_sigreturn and restart_syscall	2021-07-08 15:37:28 +02:00