linux-kernel - Re: [syzbot] [io-uring?] KASAN: slab-use-after-free Read in io_waitid

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Message-ID: <68e7f283.050a0220.91a22.000b.GAE@google.com>
Date: Thu, 09 Oct 2025 10:36:03 -0700
From: syzbot <syzbot+b9e83021d9c642a33d8c@...kaller.appspotmail.com>
To: axboe@...nel.dk, io-uring@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [io-uring?] KASAN: slab-use-after-free Read in io_waitid_wait

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+b9e83021d9c642a33d8c@...kaller.appspotmail.com
Tested-by: syzbot+b9e83021d9c642a33d8c@...kaller.appspotmail.com

Tested on:

commit:         554d1823 io_uring/waitid: use io_waitid_remove_wq() co..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git syztest
console output: https://syzkaller.appspot.com/x/log.txt?x=10fe1304580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6da9233e22696ba7
dashboard link: https://syzkaller.appspot.com/bug?extid=b9e83021d9c642a33d8c
compiler:       gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.