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x86: printk kernel version in WARN_ON and other dump_stack users 

today, all oopses contain a version number of the kernel, which is nice
because the people who actually do bother to read the oops get this
vital bit of information always without having to ask the reporter in
another round trip.

However, WARN_ON() and many other dump_stack() users right now lack this
information; the patch below adds this. This information is essential
for getting people to use their time effectively when looking at these
things; in addition, it's essential for tools that try to collect
statistics about defects.

Please consider, since its so simple and important for long term kernel
quality processes.

The code is identical between 32/64 bit; a lot of this code should be
unified over time, the patch keeps the identical-ness intact.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Arjan van de Ven 2007-11-26 20:42:19 +01:00 committed by Ingo Molnar
parent c1c3063446
commit 57c351de71
2 changed files with 12 additions and 0 deletions
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5
arch/x86/kernel/traps_32.c
View File

@ -283,6 +283,11 @@ void dump_stack(void)
{
unsigned long stack;
printk("Pid: %d, comm: %.20s %s %s %.*s\n",
current->pid, current->comm, print_tainted(),
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
show_trace(current, NULL, &stack);
}

7
arch/x86/kernel/traps_64.c
View File

@ -31,6 +31,7 @@
#include <linux/uaccess.h>
#include <linux/bug.h>
#include <linux/kdebug.h>
#include <linux/utsname.h>
#if defined(CONFIG_EDAC)
#include <linux/edac.h>
@ -400,6 +401,12 @@ void show_stack(struct task_struct *tsk, unsigned long * rsp)
void dump_stack(void)
{
unsigned long dummy;
printk("Pid: %d, comm: %.20s %s %s %.*s\n",
current->pid, current->comm, print_tainted(),
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
show_trace(NULL, NULL, &dummy);
}