This is a note to let you know that I've just added the patch titled
btrfs: ref-verify: fix memory leak in btrfs_ref_tree_mod
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-ref-verify-fix-memory-leak-in-btrfs_ref_tree_mod.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 468600c6ec28613b756193c5f780aac062f1acdf Mon Sep 17 00:00:00 2001
From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Date: Wed, 21 Oct 2020 13:36:55 +0800
Subject: btrfs: ref-verify: fix memory leak in btrfs_ref_tree_mod
From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
commit 468600c6ec28613b756193c5f780aac062f1acdf upstream.
There is one error handling path that does not free ref, which may cause
a minor memory leak.
CC: stable@xxxxxxxxxxxxxxx # 4.19+
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/ref-verify.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -851,6 +851,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_i
"dropping a ref for a root that doesn't have a ref on the block");
dump_block_entry(fs_info, be);
dump_ref_action(fs_info, ra);
+ kfree(ref);
kfree(ra);
goto out_unlock;
}
Patches currently in stable-queue which might be from dinghao.liu@xxxxxxxxxx are
queue-5.4/btrfs-ref-verify-fix-memory-leak-in-btrfs_ref_tree_mod.patch
