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| author | Chao Yu <chao@kernel.org> | 2023-06-06 15:32:03 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2023-06-26 19:36:44 -0400 |
| commit | c4d13222afd8a64bf11bc7ec68645496ee8b54b9 (patch) | |
| tree | fe0bb4acdb3aa8502dc227c8eecbdd9067410a7a | |
| parent | f3c1c42e0c40656e73f12ab5dcb1110f83ef8e65 (diff) | |
| download | linux-c4d13222afd8a64bf11bc7ec68645496ee8b54b9.tar.gz linux-c4d13222afd8a64bf11bc7ec68645496ee8b54b9.tar.bz2 linux-c4d13222afd8a64bf11bc7ec68645496ee8b54b9.zip | |
ext4: fix to check return value of freeze_bdev() in ext4_shutdown()
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")
Cc: stable@kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230606073203.1310389-1-chao@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/ioctl.c | 5 |
1 files changed, 4 insertions, 1 deletions
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; |