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isofs: release buffer head before return

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[ 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>
This commit is contained in:
Pan Bian 2021-01-18 04:04:55 -08:00 committed by Greg Kroah-Hartman
parent e0ce3009ed
commit ef89b38617
2 changed files with 2 additions and 0 deletions
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1
fs/isofs/dir.c
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@ -151,6 +151,7 @@ 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;
}

1
fs/isofs/namei.c
View File

@ -101,6 +101,7 @@ 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;
}