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Wed, 13 Mar 2024 05:23:04 -0700 (PDT) Date: Wed, 13 Mar 2024 05:23:04 -0700 In-Reply-To: <00000000000095640f05cb78af37@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002755ce061389d67b@google.com> Subject: Re: [syzbot] [can?] possible deadlock in j1939_sk_queue_drop_all From: syzbot To: astrajoan@yahoo.com, davem@davemloft.net, edumazet@google.com, hdanton@sina.com, kernel@pengutronix.de, kuba@kernel.org, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, linux@rempel-privat.de, mkl@pengutronix.de, netdev@vger.kernel.org, o.rempel@pengutronix.de, pabeni@redhat.com, robin@protonic.nl, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit 6cdedc18ba7b9dacc36466e27e3267d201948c8d Author: Ziqi Zhao Date: Fri Jul 21 16:22:26 2023 +0000 can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10e4d371180000 start commit: dd72f9c7e512 Merge tag 'spi-fix-v6-6-rc4' of git://git.ker.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=12abf4cc4f802b24 dashboard link: https://syzkaller.appspot.com/bug?extid=3bd970a1887812621b4c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17602089680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13398a9d680000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock For information about bisection process see: https://goo.gl/tpsmEJ#bisection