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Fri, 28 Mar 2025 22:02:11 -0400 X-MC-Unique: EmtEcVvbOmO4OtRxKvBpaw-1 X-Mimecast-MFC-AGG-ID: EmtEcVvbOmO4OtRxKvBpaw_1743213730 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0ECDC19560B0; Sat, 29 Mar 2025 02:02:10 +0000 (UTC) Received: from fedora (unknown [10.72.120.4]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3879B195DF83; Sat, 29 Mar 2025 02:02:04 +0000 (UTC) Date: Sat, 29 Mar 2025 10:01:59 +0800 From: Ming Lei To: syzbot Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [block?] possible deadlock in elv_iosched_store Message-ID: References: <67e6b425.050a0220.2f068f.007b.GAE@google.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <67e6b425.050a0220.2f068f.007b.GAE@google.com> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 On Fri, Mar 28, 2025 at 07:37:25AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 1a9239bb4253 Merge tag 'net-next-6.15' of git://git.kernel.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1384b43f980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c7163a109ac459a8 > dashboard link: https://syzkaller.appspot.com/bug?extid=4c7e0f9b94ad65811efb > 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=178cfa4c580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11a8ca4c580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/fc7dc9f0d9a7/disk-1a9239bb.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/f555a3ae03d3/vmlinux-1a9239bb.xz > kernel image: https://storage.googleapis.com/syzbot-assets/55f6ea74eaf2/bzImage-1a9239bb.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+4c7e0f9b94ad65811efb@syzkaller.appspotmail.com > ... > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report #syz dup: [syzbot] [block?] possible deadlock in elv_iosched_store -- Ming