linux-kernel - [PATCH v5.10-v6.6] btrfs: don't BUG_ON on ENOMEM from btrfs_lookuip_extent_info() in walk_down

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Message-Id: <20241206040846.4013310-1-keerthana.kalyanasundaram@broadcom.com>
Date: Fri,  6 Dec 2024 04:08:46 +0000
From: Keerthana K <keerthana.kalyanasundaram@...adcom.com>
To: stable@...r.kernel.org,
	gregkh@...uxfoundation.org
Cc: clm@...com,
	josef@...icpanda.com,
	dsterba@...e.com,
	linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ajay.kaher@...adcom.com,
	alexey.makhalov@...adcom.com,
	vasavi.sirnapalli@...adcom.com,
	Sasha Levin <sashal@...nel.org>,
	Keerthana K <keerthana.kalyanasundaram@...adcom.com>
Subject: [PATCH v5.10-v6.6] btrfs: don't BUG_ON on ENOMEM from btrfs_lookuip_extent_info() in walk_down_proc()

From: Josef Bacik <josef@...icpanda.com>

[ Upstream commit a580fb2c3479d993556e1c31b237c9e5be4944a3 ]

We handle errors here properly, ENOMEM isn't fatal, 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: Sasha Levin <sashal@...nel.org>
Signed-off-by: Keerthana K <keerthana.kalyanasundaram@...adcom.com>
---
 fs/btrfs/extent-tree.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0d97c8ee6..f53c4d52b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5213,7 +5213,6 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
 					       eb->start, level, 1,
 					       &wc->refs[level],
 					       &wc->flags[level]);
-		BUG_ON(ret == -ENOMEM);
 		if (ret)
 			return ret;
 		if (unlikely(wc->refs[level] == 0)) {
-- 
2.19.0