Messages in this thread Patch in this message | | | Date | Tue, 11 May 2010 08:59:59 +1000 | From | Anton Blanchard <> | Subject | [PATCH] panic: Call console_verbose in panic |
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Most distros turn the console verbosity down and that means a backtrace after a panic never makes it to the console. I assume we haven't seen this because a panic is often preceeded by an oops which will have called console_verbose. There are however a lot of places we call panic directly, and they are broken.
Use console_verbose like we do in the oops path to ensure a directly called panic will print a backtrace.
Signed-off-by: Anton Blanchard <anton@samba.org> ---
Index: linux-2.6/kernel/panic.c =================================================================== --- linux-2.6.orig/kernel/panic.c 2010-05-09 09:13:06.000000000 +1000 +++ linux-2.6/kernel/panic.c 2010-05-09 09:14:13.000000000 +1000 @@ -87,6 +87,7 @@ NORET_TYPE void panic(const char * fmt, */ preempt_disable(); + console_verbose(); bust_spinlocks(1); va_start(args, fmt); vsnprintf(buf, sizeof(buf), fmt, args);
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