From: Bart Van Assche <bvanassche@acm.org>
To: syzbot <syzbot+313d95e8a7a49263f88d@syzkaller.appspotmail.com>,
a@unstable.cc, axboe@kernel.dk, b.a.t.m.a.n@lists.open-mesh.org,
davem@davemloft.net, dongli.zhang@oracle.com,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch,
netdev@vger.kernel.org, sven@narfation.org,
sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com,
viro@zeniv.linux.org.uk
Subject: Re: KASAN: null-ptr-deref Write in blk_mq_map_swqueue
Date: Thu, 26 Mar 2020 20:00:15 -0700 [thread overview]
Message-ID: <60bb3266-03fb-acfc-d285-b0249bb5e57d@acm.org> (raw)
In-Reply-To: <0000000000004760b805a1cc03fc@google.com>
On 2020-03-26 18:28, syzbot wrote:
> syzbot has bisected this bug to:
>
> commit 768134d4f48109b90f4248feecbeeb7d684e410c
> Author: Jens Axboe <axboe@kernel.dk>
> Date: Mon Nov 11 03:30:53 2019 +0000
>
> io_uring: don't do flush cancel under inflight_lock
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14233ef5e00000
> start commit: 1b649e0b Merge git://git.kernel.org/pub/scm/linux/kernel/g..
> git tree: upstream
> final crash: https://syzkaller.appspot.com/x/report.txt?x=16233ef5e00000
> console output: https://syzkaller.appspot.com/x/log.txt?x=12233ef5e00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=27392dd2975fd692
> dashboard link: https://syzkaller.appspot.com/bug?extid=313d95e8a7a49263f88d
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13850447e00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=119a26f5e00000
>
> Reported-by: syzbot+313d95e8a7a49263f88d@syzkaller.appspotmail.com
> Fixes: 768134d4f481 ("io_uring: don't do flush cancel under inflight_lock")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
#syz fix: blk-mq: Fix a recently introduced regression in
blk_mq_realloc_hw_ctxs()
next prev parent reply other threads:[~2020-03-27 3:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <00000000000047770d05a1c70ecb@google.com>
2020-03-27 1:28 ` KASAN: null-ptr-deref Write in blk_mq_map_swqueue syzbot
2020-03-27 3:00 ` Bart Van Assche [this message]
2020-03-27 15:06 ` Jens Axboe
2020-06-25 3:01 ` syzbot
2020-06-25 4:05 ` Bart Van Assche
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