tree 1d68ae9c2e07c87f7cbc2f4b5c10d98a6c60a874
parent 6faee84b006af55bab9908741dd76916c8450be2
author Jiri Kosina <jkosina@suse.cz> 1175098354 +0200
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1175115482 -0700

[PATCH] oprofile: fix potential deadlock on oprofilefs_lock

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>