btrfs: async-thread: Fix a use-after-free error for trace

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commit 0a95b85137 upstream.

Parameter of trace_btrfs_work_queued() can be freed in its workqueue.
So no one use use that pointer after queue_work().

Fix the user-after-free bug by move the trace line before queue_work().

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Qu Wenruo 2016-01-22 09:28:38 +08:00 • committed by Greg Kroah-Hartman

parent 08acfd9dd8

commit d60a374907

1 changed files with 1 additions and 1 deletions

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fs/btrfs/async-thread.c

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