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ext4: fix to check return value of freeze_bdev() in ext4_shutdown()
commitc4d13222af
upstream. freeze_bdev() can fail due to a lot of reasons, it needs to check its reason before later process. Fixes:783d948544
("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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 4 additions and 1 deletions
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@ -797,6 +797,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
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{
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struct ext4_sb_info *sbi = EXT4_SB(sb);
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__u32 flags;
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int ret;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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@ -815,7 +816,9 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
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switch (flags) {
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case EXT4_GOING_FLAGS_DEFAULT:
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freeze_bdev(sb->s_bdev);
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ret = freeze_bdev(sb->s_bdev);
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if (ret)
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return ret;
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set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
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thaw_bdev(sb->s_bdev);
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break;
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