linux-kernel - Re: [syzbot] [v9fs?] KASAN: slab-use-after-free Read in v9fs_stat2inode

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Date: Fri, 2 Feb 2024 16:35:46 +0800
From: Lizhi Xu <lizhi.xu@...driver.com>
To: <syzbot+7a3d75905ea1a830dbe5@...kaller.appspotmail.com>
CC: <linux-kernel@...r.kernel.org>
Subject: Re: [syzbot] [v9fs?] KASAN: slab-use-after-free Read in v9fs_stat2inode_dotl

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master

diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index ef9db3e03506..6ad86b604877 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -82,7 +82,6 @@ struct inode *v9fs_fid_iget_dotl(struct super_block *sb, struct p9_fid *fid)
 	if (retval)
 		goto error;
 
-	v9fs_stat2inode_dotl(st, inode, 0);
 	v9fs_set_netfs_context(inode);
 	v9fs_cache_inode_get_cookie(inode);
 	retval = v9fs_get_acl(inode, fid);