From: Chao Yu <chao@kernel.org>
To: Theodore Ts'o <tytso@mit.edu>, Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
Chao Yu <chao@kernel.org>
Subject: [PATCH] ext4: fix to check return value of freeze_bdev() in ext4_shutdown()
Date: Tue, 6 Jun 2023 15:32:03 +0800 [thread overview]
Message-ID: <20230606073203.1310389-1-chao@kernel.org> (raw)
freeze_bdev() can fail due to a lot of reasons, it needs to check its
reason before later process.
Fixes: 783d94854499 ("ext4: add EXT4_IOC_GOINGDOWN ioctl")
Signed-off-by: Chao Yu <chao@kernel.org>
---
fs/ext4/ioctl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index f9a430152063..55be1b8a6360 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -797,6 +797,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
__u32 flags;
+ int ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -815,7 +816,9 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
switch (flags) {
case EXT4_GOING_FLAGS_DEFAULT:
- freeze_bdev(sb->s_bdev);
+ ret = freeze_bdev(sb->s_bdev);
+ if (ret)
+ return ret;
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
thaw_bdev(sb->s_bdev);
break;
--
2.40.1
reply other threads:[~2023-06-06 7:32 UTC|newest]
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