[PATCH] oprofile: fix potential deadlock on oprofilefs_lock

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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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Jiri Kosina 2007-03-28 18:12:34 +02:00 • committed by Linus Torvalds

parent 6faee84b00

commit 4dfc896e90

2 changed files with 6 additions and 4 deletions

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5

drivers/oprofile/event_buffer.c

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5

drivers/oprofile/oprofilefs.c

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