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-rw-r--r--fs/ext4/super.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 886e0d518668..f66c7301b53a 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4462,14 +4462,20 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
}
if (sb->s_blocksize != blocksize) {
+ /*
+ * bh must be released before kill_bdev(), otherwise
+ * it won't be freed and its page also. kill_bdev()
+ * is called by sb_set_blocksize().
+ */
+ brelse(bh);
/* Validate the filesystem blocksize */
if (!sb_set_blocksize(sb, blocksize)) {
ext4_msg(sb, KERN_ERR, "bad block size %d",
blocksize);
+ bh = NULL;
goto failed_mount;
}
- brelse(bh);
logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE;
offset = do_div(logical_sb_block, blocksize);
bh = ext4_sb_bread_unmovable(sb, logical_sb_block);
@@ -5202,8 +5208,9 @@ failed_mount:
kfree(get_qf_name(sb, sbi, i));
#endif
fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy);
- ext4_blkdev_remove(sbi);
+ /* ext4_blkdev_remove() calls kill_bdev(), release bh before it. */
brelse(bh);
+ ext4_blkdev_remove(sbi);
out_fail:
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);