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Tsirkin" To: syzbot Cc: elic@nvidia.com, jasowang@redhat.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, ocfs2-devel@oss.oracle.com, parav@nvidia.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_reserve_local_alloc_bits Message-ID: <20240915061811-mutt-send-email-mst@kernel.org> References: <000000000000ac4a9d062044e498@google.com> <0000000000000c5506062224dd83@google.com> Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <0000000000000c5506062224dd83@google.com> X-Mimecast-Spam-Score: 1 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Sep 15, 2024 at 02:13:02AM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit a3c06ae158dd6fa8336157c31d9234689d068d02 > Author: Parav Pandit > Date: Tue Jan 5 10:32:03 2021 +0000 > > vdpa_sim_net: Add support for user supported devices > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=174bbc77980000 > start commit: 0babf683783d Merge tag 'pinctrl-v6.11-4' of git://git.kern.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=14cbbc77980000 > console output: https://syzkaller.appspot.com/x/log.txt?x=10cbbc77980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=1c9e296880039df9 > dashboard link: https://syzkaller.appspot.com/bug?extid=843fa26882088a9ee7e3 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=129a6407980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167617c7980000 > > Reported-by: syzbot+843fa26882088a9ee7e3@syzkaller.appspotmail.com > Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection something very weird going on here. don't see how this can thinkably cause a deadlock in ocfs.