btrfs: sysfs: Fix error path kobject memory leak

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If a call to kobject_init_and_add() fails we must call kobject_put()
otherwise we leak memory.

Calling kobject_put() when kobject_init_and_add() fails drops the
refcount back to 0 and calls the ktype release method (which in turn
calls the percpu destroy and kfree).

Add call to kobject_put() in the error path of call to
kobject_init_and_add().

Cc: stable@vger.kernel.org # v4.4+
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tobin C. Harding <tobin@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

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Tobin C. Harding 2019-05-13 13:39:11 +10:00 • committed by David Sterba

parent 72bd2323ec

commit 450ff83488

1 changed files with 1 additions and 2 deletions

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fs/btrfs/extent-tree.c

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