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[PATCH] oprofile: fix potential deadlock on oprofilefs_lock
authorJiri Kosina <jkosina@suse.cz>
Wed, 28 Mar 2007 16:12:34 +0000 (18:12 +0200)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 28 Mar 2007 20:58:02 +0000 (13:58 -0700)
nmi_cpu_setup() is called from hardirq context and acquires oprofilefs_lock.
alloc_event_buffer() and oprofilefs_ulong_from_user() acquire this lock
without disabling irqs, which could deadlock.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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