* Re: [syzbot] WARNING in __percpu_ref_exit (2) [not found] <0000000000006e9e0705bd91f762@google.com> @ 2021-09-13 9:22 ` syzbot 2021-09-16 7:59 ` Dmitry Vyukov 0 siblings, 1 reply; 5+ messages in thread From: syzbot @ 2021-09-13 9:22 UTC (permalink / raw) To: asml.silence, axboe, coreteam, davem, dsahern, fw, hdanton, io-uring, kadlec, kuba, linux-kernel, ming.lei, netdev, netfilter-devel, pablo, syzkaller-bugs, yoshfuji syzbot suspects this issue was fixed by commit: commit 43016d02cf6e46edfc4696452251d34bba0c0435 Author: Florian Westphal <fw@strlen.de> Date: Mon May 3 11:51:15 2021 +0000 netfilter: arptables: use pernet ops struct during unregister bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10acd273300000 start commit: c98ff1d013d2 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=1c70e618af4c2e92 dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145cb2b6d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=157b72b1d00000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: netfilter: arptables: use pernet ops struct during unregister For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] WARNING in __percpu_ref_exit (2) 2021-09-13 9:22 ` [syzbot] WARNING in __percpu_ref_exit (2) syzbot @ 2021-09-16 7:59 ` Dmitry Vyukov 2021-09-16 13:17 ` Pavel Begunkov 0 siblings, 1 reply; 5+ messages in thread From: Dmitry Vyukov @ 2021-09-16 7:59 UTC (permalink / raw) To: syzbot Cc: asml.silence, axboe, coreteam, davem, dsahern, fw, hdanton, io-uring, kadlec, kuba, linux-kernel, ming.lei, netdev, netfilter-devel, pablo, syzkaller-bugs, yoshfuji On Mon, 13 Sept 2021 at 11:22, syzbot <syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com> wrote: > > syzbot suspects this issue was fixed by commit: > > commit 43016d02cf6e46edfc4696452251d34bba0c0435 > Author: Florian Westphal <fw@strlen.de> > Date: Mon May 3 11:51:15 2021 +0000 > > netfilter: arptables: use pernet ops struct during unregister > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10acd273300000 > start commit: c98ff1d013d2 Merge tag 'scsi-fixes' of git://git.kernel.or.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=1c70e618af4c2e92 > dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145cb2b6d00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=157b72b1d00000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: netfilter: arptables: use pernet ops struct during unregister > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection I guess this is a wrong commit and it was fixed by something in io_uring. Searching for refcount fixes I see a298232ee6b9a1d5d732aa497ff8be0d45b5bd82 "io_uring: fix link timeout refs". Pavel, does it look right to you? ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] WARNING in __percpu_ref_exit (2) 2021-09-16 7:59 ` Dmitry Vyukov @ 2021-09-16 13:17 ` Pavel Begunkov 2021-09-16 14:01 ` syzbot 0 siblings, 1 reply; 5+ messages in thread From: Pavel Begunkov @ 2021-09-16 13:17 UTC (permalink / raw) To: Dmitry Vyukov, syzbot Cc: axboe, coreteam, davem, dsahern, fw, hdanton, io-uring, kadlec, kuba, linux-kernel, ming.lei, netdev, netfilter-devel, pablo, syzkaller-bugs, yoshfuji On 9/16/21 8:59 AM, Dmitry Vyukov wrote: > On Mon, 13 Sept 2021 at 11:22, syzbot > <syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com> wrote: >> >> syzbot suspects this issue was fixed by commit: >> >> commit 43016d02cf6e46edfc4696452251d34bba0c0435 >> Author: Florian Westphal <fw@strlen.de> >> Date: Mon May 3 11:51:15 2021 +0000 >> >> netfilter: arptables: use pernet ops struct during unregister >> >> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10acd273300000 >> start commit: c98ff1d013d2 Merge tag 'scsi-fixes' of git://git.kernel.or.. >> git tree: upstream >> kernel config: https://syzkaller.appspot.com/x/.config?x=1c70e618af4c2e92 >> dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145cb2b6d00000 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=157b72b1d00000 >> >> If the result looks correct, please mark the issue as fixed by replying with: >> >> #syz fix: netfilter: arptables: use pernet ops struct during unregister >> >> For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > I guess this is a wrong commit and it was fixed by something in io_uring. > Searching for refcount fixes I see > a298232ee6b9a1d5d732aa497ff8be0d45b5bd82 "io_uring: fix link timeout > refs". > Pavel, does it look right to you? I don't remember to be honest, if the dates fit, it can pretty well be it. Let's test one thing to be sure it hasn't been shut just by coincidence. #syz test: https://github.com/isilence/linux.git syz_test_quiesce_files -- Pavel Begunkov ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] WARNING in __percpu_ref_exit (2) 2021-09-16 13:17 ` Pavel Begunkov @ 2021-09-16 14:01 ` syzbot 2021-09-20 8:15 ` Dmitry Vyukov 0 siblings, 1 reply; 5+ messages in thread From: syzbot @ 2021-09-16 14:01 UTC (permalink / raw) To: asml.silence, axboe, coreteam, davem, dsahern, dvyukov, fw, hdanton, io-uring, kadlec, kuba, linux-kernel, ming.lei, netdev, netfilter-devel, pablo, syzkaller-bugs, yoshfuji Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com Tested on: commit: 5318e5b9 io_uring: quiesce files reg git tree: https://github.com/isilence/linux.git syz_test_quiesce_files kernel config: https://syzkaller.appspot.com/x/.config?x=f7d9f99709463d21 dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Note: testing is done by a robot and is best-effort only. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] WARNING in __percpu_ref_exit (2) 2021-09-16 14:01 ` syzbot @ 2021-09-20 8:15 ` Dmitry Vyukov 0 siblings, 0 replies; 5+ messages in thread From: Dmitry Vyukov @ 2021-09-20 8:15 UTC (permalink / raw) To: syzbot Cc: asml.silence, axboe, coreteam, davem, dsahern, fw, hdanton, io-uring, kadlec, kuba, linux-kernel, ming.lei, netdev, netfilter-devel, pablo, syzkaller-bugs, yoshfuji On Thu, 16 Sept 2021 at 16:01, syzbot <syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > Reported-and-tested-by: syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com > > Tested on: > > commit: 5318e5b9 io_uring: quiesce files reg > git tree: https://github.com/isilence/linux.git syz_test_quiesce_files > kernel config: https://syzkaller.appspot.com/x/.config?x=f7d9f99709463d21 > dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Note: testing is done by a robot and is best-effort only. OK, since it's not failing, I assume we can say: #syz fix: io_uring: fix link timeout refs (and it's better to close it with a wrong fix, then to keep it open forever anyway) ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-09-20 8:15 UTC | newest]
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2021-09-13 9:22 ` [syzbot] WARNING in __percpu_ref_exit (2) syzbot
2021-09-16 7:59 ` Dmitry Vyukov
2021-09-16 13:17 ` Pavel Begunkov
2021-09-16 14:01 ` syzbot
2021-09-20 8:15 ` Dmitry Vyukov
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