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From: Greg KH <gr...@li...> - 2012-06-20 18:22:20
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3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Seiji Aguchi <sei...@hd...> commit 62be73eafaa045d3233337303fb140f7f8a61135 upstream. This patch moves kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop(), to serialize the crash-logging process via smp_send_stop() and to thus retrieve a more stable crash image of all CPUs stopped. Signed-off-by: Seiji Aguchi <sei...@hd...> Acked-by: Don Zickus <dz...@re...> Cc: dle...@li... <dle...@li...> Cc: Satoru Moriya <sat...@hd...> Cc: Tony Luck <ton...@in...> Cc: a.p...@ch... <a.p...@ch...> Link: http://lkml.kernel.org/r/5C4...@US... Signed-off-by: Ingo Molnar <mi...@ke...> Signed-off-by: Greg Kroah-Hartman <gr...@li...> --- kernel/panic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/kernel/panic.c +++ b/kernel/panic.c @@ -108,8 +108,6 @@ void panic(const char *fmt, ...) */ crash_kexec(NULL); - kmsg_dump(KMSG_DUMP_PANIC); - /* * Note smp_send_stop is the usual smp shutdown function, which * unfortunately means it may not be hardened to work in a panic @@ -117,6 +115,8 @@ void panic(const char *fmt, ...) */ smp_send_stop(); + kmsg_dump(KMSG_DUMP_PANIC); + atomic_notifier_call_chain(&panic_notifier_list, 0, buf); bust_spinlocks(0); |