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(parent: 547415d) | patch
gcc-4.6: printk: use stable variable to dump kmsg buffer
authorAndi Kleen <andi@firstfloor.org>
Tue, 10 Aug 2010 00:20:36 +0000 (17:20 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 10 Aug 2010 03:45:06 +0000 (20:45 -0700)
commit8c4af38e9b2c2a78369c4e2e5706fe539ac64eb2
tree17671814cc7afb4e5eaafad32f0ed0c428764515tree | snapshot (tar.gz zip)
parent547415d5edf8660aee040dc81d8c71b081a59bdacommit | diff
gcc-4.6: printk: use stable variable to dump kmsg buffer

kmsg_dump takes care to sample the global variables
inside a spinlock, but then goes on to use the same
variables outside the spinlock region too.

Use the correct variable. This will make the race
window smaller.

Found by gcc 4.6's new warnings.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/printk.c diff | blob | blame | history