From 6e6f0a1f0fa6bba1493c296eb30d1e176e1f8530 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 12 Jan 2012 17:20:30 -0800 Subject: [PATCH] panic: don't print redundant backtraces on oops When an oops causes a panic and panic prints another backtrace it's pretty common to have the original oops data be scrolled away on a 80x50 screen. The second backtrace is quite redundant and not needed anyways. So don't print the panic backtrace when oops_in_progress is true. [akpm@linux-foundation.org: add comment] Signed-off-by: Andi Kleen Cc: Michael Holzheu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/panic.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/panic.c b/kernel/panic.c index 5dce5404eeef..80aed44e345a 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -94,7 +94,11 @@ void panic(const char *fmt, ...) va_end(args); printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf); #ifdef CONFIG_DEBUG_BUGVERBOSE - dump_stack(); + /* + * Avoid nested stack-dumping if a panic occurs during oops processing + */ + if (!oops_in_progress) + dump_stack(); #endif /*