From: Heiko Carstens Date: Mon, 27 Oct 2014 07:28:08 +0000 (+0100) Subject: s390/vdso: fix stack corruption X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~157^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b2efe035eafb1a29ff3dfe21ed0e755aac09130;p=pandora-kernel.git s390/vdso: fix stack corruption The kernel provided vdso functions do not get a stack frame from the calling function and therefore may not change the stack contents, unless they allocate space on their own. This problem was exposed with 070b7be633dc "s390/vdso: replace stck with stcke" which writes 16 bytes instead of 8 bytes into the stack frame. These additional 8 bytes however were indeed used by the caller (glibc) to save data and therefore this data was corrupted by the vdso code. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- Reading git-diff-tree failed