The patch titled
mn10300: signal stack fix
has been added to the -mm tree. Its filename is
mn10300-signal-stack-fix.patch
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------------------------------------------------------
Subject: mn10300: signal stack fix
From: Mark Salter <msalter@xxxxxxxxxx>
This fixes a signal stack handling problem in the MN10300 arch. When new
threads are cloned with CLONE_VM, they don't inherit the alternate signal
stack. They do share the signal flags, though. When deciding whether to
use an alternate stack, the arch code needs to check to make sure the task
struct contains a valid alternate stack. This patch fixes the MN10300
arch by using the sas_ss_flags() test provided by sched.h rather than the
on_sig_stack() test which is insufficient by itself.
Signed-off-by: Mark Salter <msalter@xxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/mn10300/kernel/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/mn10300/kernel/signal.c~mn10300-signal-stack-fix arch/mn10300/kernel/signal.c
--- a/arch/mn10300/kernel/signal.c~mn10300-signal-stack-fix
+++ a/arch/mn10300/kernel/signal.c
@@ -264,7 +264,7 @@ static inline void __user *get_sigframe(
/* 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) == 0)
sp = current->sas_ss_sp + current->sas_ss_size;
}
_
Patches currently in -mm which might be from msalter@xxxxxxxxxx are
mn10300-signal-stack-fix.patch
mn10300-objcopy-flags-fix.patch
mn10300-add-cc-clobbers-to-asm-statements.patch
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