Messages in this thread Patch in this message | | | Date | Mon, 24 Apr 2006 17:03:30 +0200 | From | Martin Schwidefsky <> | Subject | [patch 4/13] s390: alternate signal stack handling bug. |
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From: Laurent Meyer <meyerlau@fr.ibm.com>
[patch 4/13] 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> ---
arch/s390/kernel/compat_signal.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-)
diff -urpN linux-2.6/arch/s390/kernel/compat_signal.c linux-2.6-patched/arch/s390/kernel/compat_signal.c --- linux-2.6/arch/s390/kernel/compat_signal.c 2006-03-20 06:53:29.000000000 +0100 +++ linux-2.6-patched/arch/s390/kernel/compat_signal.c 2006-04-24 16:47:21.000000000 +0200 @@ -430,7 +430,7 @@ 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; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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