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authorLaurent Meyer <meyerlau@fr.ibm.com>2006-04-27 18:40:07 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-28 08:33:47 -0700
commit28f223782bca914ae65d08234c57c2175ecd7f5d (patch)
tree17100f49e1e1b0c11bfa6f817b412363407d20e3 /arch
parent[PATCH] s390: enable interrupts on error path (diff)
downloadlinux-dev-28f223782bca914ae65d08234c57c2175ecd7f5d.tar.xz
linux-dev-28f223782bca914ae65d08234c57c2175ecd7f5d.zip
[PATCH] s390: alternate signal stack handling bug
If a signal handler has been established with the SA_ONSTACK option but no alternate stack is provided with sigaltstack(), the kernel still tries to install the alternate stack. Also when setting an alternate stack with sigalstack() and the SS_DISABLE flag, the kernel tries to install the alternate stack on signal delivery. Use the correct conditions sas_ss_flags() to check if the alternate stack has to be used. Signed-off-by: Laurent Meyer <meyerlau@fr.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/compat_signal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 5291b5f8788d..b4c815d8ef75 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -430,7 +430,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
- if (! on_sig_stack(sp))
+ if (! sas_ss_flags(sp))
sp = current->sas_ss_sp + current->sas_ss_size;
}