linux-kernel - Re: [syzbot] [nilfs?] [mm?] KASAN: slab-use-after-free Read in lru_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu, 13 Jun 2024 07:16:34 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+d79afb004be235636ee8@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [nilfs?] [mm?] KASAN: slab-use-after-free Read in lru_add_fn

On Tue, 11 Jun 2024 11:10:20 -0700
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    83a7eefedc9b Linux 6.10-rc3
> git tree:       upstream
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17c645e2980000

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

--- x/fs/nilfs2/the_nilfs.c
+++ y/fs/nilfs2/the_nilfs.c
@@ -922,7 +922,6 @@ void nilfs_put_root(struct nilfs_root *r
 		spin_unlock(&nilfs->ns_cptree_lock);
 
 		nilfs_sysfs_delete_snapshot_group(root);
-		iput(root->ifile);
 
 		kfree(root);
 	}
--