* Re: KASAN: slab-out-of-bounds Read in tick_sched_handle [not found] <000000000000551b80057d31a5f7@google.com> @ 2019-03-16 14:49 ` syzbot 2019-03-16 15:52 ` Stefano Brivio 0 siblings, 1 reply; 4+ messages in thread From: syzbot @ 2019-03-16 14:49 UTC (permalink / raw) To: davem, fweisbec, kuznet, linux-kernel, mingo, netdev, sbrivio, sd, syzkaller-bugs, tglx, yoshfuji syzbot has bisected this bug to: commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e Author: Stefano Brivio <sbrivio@redhat.com> Date: Thu Nov 8 11:19:23 2018 +0000 fou, fou6: ICMP error handlers for FoU and GUE bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000 start commit: b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000 console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000 kernel config: https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2 dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000 Reported-by: syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE") ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KASAN: slab-out-of-bounds Read in tick_sched_handle 2019-03-16 14:49 ` KASAN: slab-out-of-bounds Read in tick_sched_handle syzbot @ 2019-03-16 15:52 ` Stefano Brivio 2019-03-16 16:07 ` Dmitry Vyukov 0 siblings, 1 reply; 4+ messages in thread From: Stefano Brivio @ 2019-03-16 15:52 UTC (permalink / raw) To: syzbot Cc: davem, fweisbec, kuznet, linux-kernel, mingo, netdev, sd, syzkaller-bugs, tglx, yoshfuji, Eric Dumazet On Sat, 16 Mar 2019 07:49:01 -0700 syzbot <syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com> wrote: > syzbot has bisected this bug to: > > commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e > Author: Stefano Brivio <sbrivio@redhat.com> > Date: Thu Nov 8 11:19:23 2018 +0000 > > fou, fou6: ICMP error handlers for FoU and GUE > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000 > start commit: b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000 > console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2 > dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000 > > Reported-by: syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com > Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE") Might be fixed by bc6e019b6ee6 ("fou: Prevent unbounded recursion in GUE error handler also with UDP-Lite"), testing/checking now. -- Stefano ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KASAN: slab-out-of-bounds Read in tick_sched_handle 2019-03-16 15:52 ` Stefano Brivio @ 2019-03-16 16:07 ` Dmitry Vyukov 2019-03-16 16:22 ` Stefano Brivio 0 siblings, 1 reply; 4+ messages in thread From: Dmitry Vyukov @ 2019-03-16 16:07 UTC (permalink / raw) To: Stefano Brivio Cc: syzbot, David Miller, Frédéric Weisbecker, Alexey Kuznetsov, LKML, Ingo Molnar, netdev, Sabrina Dubroca, syzkaller-bugs, Thomas Gleixner, Hideaki YOSHIFUJI, Eric Dumazet On Sat, Mar 16, 2019 at 4:53 PM Stefano Brivio <sbrivio@redhat.com> wrote: > > On Sat, 16 Mar 2019 07:49:01 -0700 > syzbot <syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com> wrote: > > > syzbot has bisected this bug to: > > > > commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e > > Author: Stefano Brivio <sbrivio@redhat.com> > > Date: Thu Nov 8 11:19:23 2018 +0000 > > > > fou, fou6: ICMP error handlers for FoU and GUE > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000 > > start commit: b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2 > > dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000 > > > > Reported-by: syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com > > Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE") > > Might be fixed by bc6e019b6ee6 ("fou: Prevent unbounded recursion in GUE > error handler also with UDP-Lite"), testing/checking now. Yes, most likely it is. The bug was just never closed as fixed. But the last crash happened 2 months ago. So I would say we just mark this as fixed: #syz fix: fou: Prevent unbounded recursion in GUE error handler also with UDP-Lite Next after root cause bisection is fix bisection, so this part will be automated to some degree as well. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KASAN: slab-out-of-bounds Read in tick_sched_handle 2019-03-16 16:07 ` Dmitry Vyukov @ 2019-03-16 16:22 ` Stefano Brivio 0 siblings, 0 replies; 4+ messages in thread From: Stefano Brivio @ 2019-03-16 16:22 UTC (permalink / raw) To: Dmitry Vyukov Cc: syzbot, David Miller, Frédéric Weisbecker, Alexey Kuznetsov, LKML, Ingo Molnar, netdev, Sabrina Dubroca, syzkaller-bugs, Thomas Gleixner, Hideaki YOSHIFUJI, Eric Dumazet On Sat, 16 Mar 2019 17:07:13 +0100 Dmitry Vyukov <dvyukov@google.com> wrote: > On Sat, Mar 16, 2019 at 4:53 PM Stefano Brivio <sbrivio@redhat.com> wrote: > > > > On Sat, 16 Mar 2019 07:49:01 -0700 > > syzbot <syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com> wrote: > > > > > syzbot has bisected this bug to: > > > > > > commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e > > > Author: Stefano Brivio <sbrivio@redhat.com> > > > Date: Thu Nov 8 11:19:23 2018 +0000 > > > > > > fou, fou6: ICMP error handlers for FoU and GUE > > > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000 > > > start commit: b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE > > > git tree: upstream > > > final crash: https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000 > > > console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2 > > > dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000 > > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000 > > > > > > Reported-by: syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com > > > Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE") > > > > Might be fixed by bc6e019b6ee6 ("fou: Prevent unbounded recursion in GUE > > error handler also with UDP-Lite"), testing/checking now. > > Yes, most likely it is. The bug was just never closed as fixed. But > the last crash happened 2 months ago. > So I would say we just mark this as fixed: > > #syz fix: > fou: Prevent unbounded recursion in GUE error handler also with UDP-Lite Confirmed by testing, too. > Next after root cause bisection is fix bisection, so this part will be > automated to some degree as well. Nice, thanks for doing that. -- Stefano ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <000000000000551b80057d31a5f7@google.com>
2019-03-16 14:49 ` KASAN: slab-out-of-bounds Read in tick_sched_handle syzbot
2019-03-16 15:52 ` Stefano Brivio
2019-03-16 16:07 ` Dmitry Vyukov
2019-03-16 16:22 ` Stefano Brivio
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