[patch 2/9] s390: signal stack bug.

[Martin Schwidefsky <schwidefsky@de.ibm.com>]

[patch 2/9] s390: signal stack bug.

From: Bodo Stroesser <bstroesser@fijitsu-siemens.com>

If a signal handler is set to use the signal stack (SA_ONSTACK), but
the signal stack is disabled, the signal frame should be written to
the current stack without stack switching.

The reason for the bug is get_sigframe() using on_sig_stack() instead
of sas_ss_flags(), which would be ok.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diffstat:
 arch/s390/kernel/signal.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -urpN linux-2.6/arch/s390/kernel/signal.c linux-2.6-patched/arch/s390/kernel/signal.c
--- linux-2.6/arch/s390/kernel/signal.c	2005-03-24 14:02:44.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/signal.c	2005-03-24 14:03:00.000000000 +0100
@@ -282,7 +282,7 @@ get_sigframe(struct k_sigaction *ka, str
 
 	/* 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;
 	}
 
-
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