From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+5d34cc6474499a5ff516@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [ntfs3?] KASAN: slab-use-after-free Read in chrdev_open
Date: Sat, 27 Apr 2024 14:29:43 +0800 [thread overview]
Message-ID: <20240427062943.3685-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000f386f90616fea5ef@google.com>
On Fri, 26 Apr 2024 05:00:21 -0700
> syzbot found the following issue on:
>
> HEAD commit: e33c4963bf53 Merge tag 'nfsd-6.9-5' of git://git.kernel.or..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12499380980000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e33c4963bf53
--- x/fs/open.c
+++ y/fs/open.c
@@ -952,7 +952,9 @@ static int do_dentry_open(struct file *f
if (!open)
open = f->f_op->open;
if (open) {
+ ihold(inode);
error = open(inode, f);
+ iput(inode);
if (error)
goto cleanup_all;
}
--
next prev parent reply other threads:[~2024-04-27 6:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-26 12:00 [syzbot] [ntfs3?] KASAN: slab-use-after-free Read in chrdev_open syzbot
2024-04-26 20:57 ` syzbot
2024-04-27 2:06 ` Hillf Danton
2024-04-27 2:58 ` syzbot
2024-04-27 6:29 ` Hillf Danton [this message]
2024-04-27 6:52 ` syzbot
2024-04-27 9:18 ` Hillf Danton
2024-04-27 9:45 ` syzbot
2024-04-27 10:44 ` Hillf Danton
2024-04-27 10:58 ` syzbot
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