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Message-ID: <20250407011955.208594-1-jianqi.ren.cn@windriver.com>
Date: Mon, 7 Apr 2025 09:19:55 +0800
From: <jianqi.ren.cn@...driver.com>
To: <stable@...r.kernel.org>
CC: <clm@...com>, <josef@...icpanda.com>, <dsterba@...e.com>,
<linux-btrfs@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<patches@...ts.linux.dev>, <gregkh@...uxfoundation.org>,
<jianqi.ren.cn@...driver.com>
Subject: [PATCH 6.1.y] btrfs: handle errors from btrfs_dec_ref() properly
From: Josef Bacik <josef@...icpanda.com>
[ Upstream commit 5eb178f373b4f16f3b42d55ff88fc94dd95b93b1 ]
In walk_up_proc() we BUG_ON(ret) from btrfs_dec_ref(). This is
incorrect, we have proper error handling here, return the error.
Signed-off-by: Josef Bacik <josef@...icpanda.com>
Reviewed-by: David Sterba <dsterba@...e.com>
Signed-off-by: David Sterba <dsterba@...e.com>
Signed-off-by: Jianqi Ren <jianqi.ren.cn@...driver.com>
Signed-off-by: He Zhe <zhe.he@...driver.com>
---
Verified the build test
---
fs/btrfs/extent-tree.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 50bc553cc73a..9040108eda64 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5575,7 +5575,10 @@ static noinline int walk_up_proc(struct btrfs_trans_handle *trans,
ret = btrfs_dec_ref(trans, root, eb, 1);
else
ret = btrfs_dec_ref(trans, root, eb, 0);
- BUG_ON(ret); /* -ENOMEM */
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
if (is_fstree(root->root_key.objectid)) {
ret = btrfs_qgroup_trace_leaf_items(trans, eb);
if (ret) {
--
2.34.1
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