btrfs: fix extent buffer leak after tree mod log failure at split_node()

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commit ede600e497 upstream.

At split_node(), if we fail to log the tree mod log copy operation, we
return without unlocking the split extent buffer we just allocated and
without decrementing the reference we own on it. Fix this by unlocking
it and decrementing the ref count before returning.

Fixes: 5de865eebb ("Btrfs: fix tree mod logging")
CC: stable@vger.kernel.org # 5.4+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Filipe Manana 2023-06-08 11:27:38 +01:00 • committed by Greg Kroah-Hartman

parent 6df630a1e3

commit 796eb12aa5

1 changed files with 2 additions and 0 deletions

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fs/btrfs/ctree.c

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