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Btrfs: uninitialized data is check_path_shared()
refs can be used with uninitialized data if btrfs_lookup_extent_info() fails on the first pass through the loop. In the original code if that happens then check_path_shared() probably returns 1, this patch changes it to return 1 for safety. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -2673,7 +2673,7 @@ static int check_path_shared(struct btrfs_root *root,
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struct extent_buffer *eb;
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int level;
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int ret;
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u64 refs;
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u64 refs = 1;
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for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
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if (!path->nodes[level])
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