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btrfs: ref-verify: fix memory leak in btrfs_ref_tree_mod
commit 468600c6ec28613b756193c5f780aac062f1acdf upstream. There is one error handling path that does not free ref, which may cause a minor memory leak. CC: stable@vger.kernel.org # 4.19+ Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> 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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@ -851,6 +851,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
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"dropping a ref for a root that doesn't have a ref on the block");
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"dropping a ref for a root that doesn't have a ref on the block");
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dump_block_entry(fs_info, be);
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dump_block_entry(fs_info, be);
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dump_ref_action(fs_info, ra);
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dump_ref_action(fs_info, ra);
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kfree(ref);
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kfree(ra);
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kfree(ra);
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goto out_unlock;
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goto out_unlock;
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}
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}
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