From: Pan Bian bianpan2016@163.com
[ Upstream commit 0a6dc67a6aa45f19bd4ff89b4f468fc50c4b8daa ]
Release the buffer_head before returning error code in do_isofs_readdir() and isofs_find_entry().
Fixes: 2deb1acc653c ("isofs: fix access to unallocated memory when reading corrupted filesystem") Link: https://lore.kernel.org/r/20210118120455.118955-1-bianpan2016@163.com Signed-off-by: Pan Bian bianpan2016@163.com Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- fs/isofs/dir.c | 1 + fs/isofs/namei.c | 1 + 2 files changed, 2 insertions(+)
diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c index 947ce22f5b3c3..55df4d80793ba 100644 --- a/fs/isofs/dir.c +++ b/fs/isofs/dir.c @@ -152,6 +152,7 @@ static int do_isofs_readdir(struct inode *inode, struct file *file, printk(KERN_NOTICE "iso9660: Corrupted directory entry" " in block %lu of inode %lu\n", block, inode->i_ino); + brelse(bh); return -EIO; }
diff --git a/fs/isofs/namei.c b/fs/isofs/namei.c index cac468f04820e..558e7c51ce0d4 100644 --- a/fs/isofs/namei.c +++ b/fs/isofs/namei.c @@ -102,6 +102,7 @@ isofs_find_entry(struct inode *dir, struct dentry *dentry, printk(KERN_NOTICE "iso9660: Corrupted directory entry" " in block %lu of inode %lu\n", block, dir->i_ino); + brelse(bh); return 0; }