Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in ep_open
Jens Axboe <[email protected]>
| Newsgroups | dev.linux.lists.syzbot,org.kernel.vger.io-uring,org.kernel.vger.linux-kernel,org.kernel.vger.linux-usb |
|---|---|
| Message-ID | <[email protected]> |
On 8/17/26 7:42 AM, syzbot wrote: > syzbot has bisected this issue to: > > commit aa00f67adc2c0d6439f81b5a81ff181377c47a7e > Author: Jens Axboe <[email protected]> > Date: Tue Oct 22 19:47:00 2024 +0000 > > io_uring: add support for fixed wait regions > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10e60679580000 > start commit: 9a143525f62b Merge tag 'ata-7.2-rc7' of git://git.kernel.o.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=12e60679580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=14e60679580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307 > dashboard link: https://syzkaller.appspot.com/bug?extid=df9e891bf8ea586f846b > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=120defb9580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16323fb9580000 > > Reported-by: [email protected] > Fixes: aa00f67adc2c ("io_uring: add support for fixed wait regions") That looks like nonsense, I strongly suspect it's a race and hence your bisection ends up being mostly useless as it sends you in random directions. -- Jens Axboe