Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-08 05:01:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86: mce: Disable preemption when calling raise_local()

Browse Source 
raise_mce() has a code path which does not disable preemption when the
raise_local() is called. The per cpu variable access in raise_local()
depends on preemption being disabled to be functional. So that code
path was either never tested or never tested with CONFIG_DEBUG_PREEMPT
enabled.

Add the missing preempt_disable/enable() pair around the call.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Thomas Gleixner 2012-07-19 13:59:37 -04:00 committed by Tony Luck
parent 0d7614f09c
commit ea22571c8f
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/cpu/mcheck/mce-inject.c
View File

@ -194,7 +194,11 @@ static void raise_mce(struct mce *m)
put_online_cpus();
} else
#endif
{
preempt_disable();
raise_local();
preempt_enable();
}
}
/* Error injection interface */