tree 66db2c8973aa8715a68a081d0aa2c5ea76356dbe
parent 84bfa03445bc34bf486036c124890b6a3a7022af
author Vasily Gorbik <gor@linux.ibm.com> 1536941290 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1574272028 +0100

s390/vdso: correct CFI annotations of vDSO functions

[ Upstream commit 26f4414a45b808f83d42d6fd2fbf4a59ef25e84b ]

Correct stack frame overhead for 31-bit vdso, which should be 96 rather
then 160. This is done by reusing STACK_FRAME_OVERHEAD definition which
contains correct value based on build flags. This fixes stack unwinding
within vdso code for 31-bit processes. While at it replace all hard coded
stack frame overhead values with the same definition in vdso64 as well.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>