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Message-ID: <00000000000016db0205c8e5967e@google.com>
Date: Fri, 06 Aug 2021 08:21:14 -0700
From: syzbot <syzbot+00e15cda746c5bc70e24@...kaller.appspotmail.com>
To: asml.silence@...il.com, axboe@...nel.dk,
gregkh@...uxfoundation.org, hdanton@...a.com,
io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
rafael@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in io_ring_exit_work
syzbot has bisected this issue to:
commit 6c2450ae55656f6b0370bfd4cb52ec8a4ecd0916
Author: Pavel Begunkov <asml.silence@...il.com>
Date: Tue Feb 23 12:40:22 2021 +0000
io_uring: allocate memory for overflowed CQEs
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=138a96e6300000
start commit: 8d4b477da1a8 Add linux-next specific files for 20210730
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=104a96e6300000
console output: https://syzkaller.appspot.com/x/log.txt?x=178a96e6300000
kernel config: https://syzkaller.appspot.com/x/.config?x=4adf4987f875c210
dashboard link: https://syzkaller.appspot.com/bug?extid=00e15cda746c5bc70e24
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15d5cd96300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1798471e300000
Reported-by: syzbot+00e15cda746c5bc70e24@...kaller.appspotmail.com
Fixes: 6c2450ae5565 ("io_uring: allocate memory for overflowed CQEs")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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