* Re: INFO: rcu detected stall in tipc_release [not found] <000000000000264c6305a9c74d9b@google.com> @ 2020-07-17 4:20 ` syzbot 2020-12-20 9:37 ` syzbot 1 sibling, 0 replies; 3+ messages in thread From: syzbot @ 2020-07-17 4:20 UTC (permalink / raw) To: bp, davem, fweisbec, hpa, jmaloy, jmattson, joro, kvm, linux-kernel, mingo, mingo, pbonzini, sean.j.christopherson, syzkaller-bugs, tglx, tuong.t.lien, vkuznets, wanpengli, x86 syzbot has bisected this issue to: commit 5e9eeccc58f3e6bcc99b929670665d2ce047e9c9 Author: Tuong Lien <tuong.t.lien@dektech.com.au> Date: Wed Jun 3 05:06:01 2020 +0000 tipc: fix NULL pointer dereference in streaming bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14641620900000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16641620900000 console output: https://syzkaller.appspot.com/x/log.txt?x=12641620900000 kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 Reported-by: syzbot+3654c027d861c6df4b06@syzkaller.appspotmail.com Fixes: 5e9eeccc58f3 ("tipc: fix NULL pointer dereference in streaming") For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: INFO: rcu detected stall in tipc_release [not found] <000000000000264c6305a9c74d9b@google.com> 2020-07-17 4:20 ` INFO: rcu detected stall in tipc_release syzbot @ 2020-12-20 9:37 ` syzbot 2020-12-21 9:21 ` Dmitry Vyukov 1 sibling, 1 reply; 3+ messages in thread From: syzbot @ 2020-12-20 9:37 UTC (permalink / raw) To: Markus.Elfring, bp, coreteam, davem, fw, fweisbec, hdanton, hpa, jmaloy, jmattson, joro, kadlec, kuba, kuznet, kvm, linux-kernel, mingo, mingo, netdev, netfilter-devel, pablo, pbonzini, sean.j.christopherson, subashab, syzkaller-bugs, tglx, tuong.t.lien, vkuznets, wanpengli, x86, yoshfuji syzbot suspects this issue was fixed by commit: commit cc00bcaa589914096edef7fb87ca5cee4a166b5c Author: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Date: Wed Nov 25 18:27:22 2020 +0000 netfilter: x_tables: Switch synchronization to RCU bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1445cb37500000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: netfilter: x_tables: Switch synchronization to RCU For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: INFO: rcu detected stall in tipc_release 2020-12-20 9:37 ` syzbot @ 2020-12-21 9:21 ` Dmitry Vyukov 0 siblings, 0 replies; 3+ messages in thread From: Dmitry Vyukov @ 2020-12-21 9:21 UTC (permalink / raw) To: syzbot Cc: Markus Elfring, Borislav Petkov, coreteam, David Miller, Florian Westphal, Frédéric Weisbecker, Hillf Danton, H. Peter Anvin, jmaloy, Jim Mattson, Joerg Roedel, kadlec, Jakub Kicinski, Alexey Kuznetsov, KVM list, LKML, Ingo Molnar, Ingo Molnar, netdev, NetFilter, Pablo Neira Ayuso, Paolo Bonzini, Christopherson, Sean J, subashab, syzkaller-bugs, Thomas Gleixner, tuong.t.lien, Vitaly Kuznetsov, wanpengli, the arch/x86 maintainers, Hideaki YOSHIFUJI On Sun, Dec 20, 2020 at 10:37 AM syzbot <syzbot+3654c027d861c6df4b06@syzkaller.appspotmail.com> wrote: > > syzbot suspects this issue was fixed by commit: > > commit cc00bcaa589914096edef7fb87ca5cee4a166b5c > Author: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> > Date: Wed Nov 25 18:27:22 2020 +0000 > > netfilter: x_tables: Switch synchronization to RCU > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1445cb37500000 > start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 > dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: netfilter: x_tables: Switch synchronization to RCU > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection It's not immediately obvious that this is indeed the fix for this, but also not obvious that this is not the fix for this. Bisection log looks plausible. Was this bug in tipc fixed? Is it the fix? If I don't hear better suggestions I will close this bug as fixed by this commit later. ^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-07-17 4:20 ` INFO: rcu detected stall in tipc_release syzbot
2020-12-20 9:37 ` syzbot
2020-12-21 9:21 ` Dmitry Vyukov
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