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Tue, 24 Dec 2024 05:56:16 -0800 (PST) Message-ID: <62983fd8-d5f6-470e-88e2-6f4737bfed79@gmail.com> Date: Tue, 24 Dec 2024 13:57:10 +0000 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [io-uring?] WARNING in __io_submit_flush_completions To: syzbot , axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <6765b448.050a0220.15b956.00d4.GAE@google.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <6765b448.050a0220.15b956.00d4.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/20/24 18:15, syzbot wrote: > > HEAD commit: 8faabc041a00 Merge tag 'net-6.13-rc4' of git://git.kernel... > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13249e0f980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c22efbd20f8da769 > dashboard link: https://syzkaller.appspot.com/bug?extid=1bcb75613069ad4957fc > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12172fe8580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=111f92df980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/0bdb6cecaf61/disk-8faabc04.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/98b22dfadac0/vmlinux-8faabc04.xz > kernel image: https://storage.googleapis.com/syzbot-assets/65a511d3ba7f/bzImage-8faabc04.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+1bcb75613069ad4957fc@syzkaller.appspotmail.com I can't reproduce but it makes sense. It shouldn't be a real problem as it's protected by ->uring_lock -- Pavel Begunkov