On 11/1/19 11:50 AM, Dmitry Vyukov wrote: > On Wed, Oct 30, 2019 at 3:41 PM Jens Axboe <axboe@xxxxxxxxx> wrote: >> >> On 10/30/19 1:44 AM, syzbot wrote: >>> syzbot has bisected this bug to: >>> >>> commit ef0524d3654628ead811f328af0a4a2953a8310f >>> Author: Jens Axboe <axboe@xxxxxxxxx> >>> Date: Thu Oct 24 13:25:42 2019 +0000 >>> >>> io_uring: replace workqueue usage with io-wq >>> >>> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16acf5d0e00000 >>> start commit: c57cf383 Add linux-next specific files for 20191029 >>> git tree: linux-next >>> final crash: https://syzkaller.appspot.com/x/report.txt?x=15acf5d0e00000 >>> console output: https://syzkaller.appspot.com/x/log.txt?x=11acf5d0e00000 >>> kernel config: https://syzkaller.appspot.com/x/.config?x=cb86688f30db053d >>> dashboard link: https://syzkaller.appspot.com/bug?extid=221cc24572a2fed23b6b >>> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=168671d4e00000 >>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140f4898e00000 >>> >>> Reported-by: syzbot+221cc24572a2fed23b6b@xxxxxxxxxxxxxxxxxxxxxxxxx >>> Fixes: ef0524d36546 ("io_uring: replace workqueue usage with io-wq") >> >> Good catch, it's a case of NULL vs ERR_PTR() confusion. I'll fold in >> the below fix. > > Hi Jens, > > Please either add the syzbot tag to commit, or close manually with > "#syz fix" (though requires waiting until the fixed commit is in > linux-next). > See https://goo.gl/tpsmEJ#rebuilt-treesamended-patches for details. > Otherwise, the bug will be considered open and will waste time of > humans looking at open bugs and prevent syzbot from reporting new bugs > in io_uring. It's queued up since two days ago: http://git.kernel.dk/cgit/linux-block/commit/?h=for-5.5/io_uring&id=975c99a570967dd48e917dd7853867fee3febabd and should have the right attributions, so hopefully it'll catch up eventually. -- Jens Axboe
