* Re: BUG: unable to handle kernel NULL pointer dereference in handle_external_interrupt_irqoff
[not found] <000000000000277a0405a16bd5c9@google.com>
@ 2020-03-22 13:29 ` syzbot
2020-03-22 13:43 ` Dmitry Vyukov
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2020-03-22 13:29 UTC (permalink / raw)
To: bp, clang-built-linux, davem, dhowells, dvyukov, hpa, jmattson,
joro, kuba, kvm, linux-afs, linux-kernel, mingo, netdev,
pbonzini, sean.j.christopherson, syzkaller-bugs, tglx, vkuznets,
wanpengli, x86
syzbot has bisected this bug to:
commit f71dbf2fb28489a79bde0dca1c8adfb9cdb20a6b
Author: David Howells <dhowells@redhat.com>
Date: Thu Jan 30 21:50:36 2020 +0000
rxrpc: Fix insufficient receive notification generation
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1483bb19e00000
start commit: b74b991f Merge tag 'block-5.6-20200320' of git://git.kerne..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=1683bb19e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=1283bb19e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=6dfa02302d6db985
dashboard link: https://syzkaller.appspot.com/bug?extid=3f29ca2efb056a761e38
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1199c0c5e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15097373e00000
Reported-by: syzbot+3f29ca2efb056a761e38@syzkaller.appspotmail.com
Fixes: f71dbf2fb284 ("rxrpc: Fix insufficient receive notification generation")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: BUG: unable to handle kernel NULL pointer dereference in handle_external_interrupt_irqoff
2020-03-22 13:29 ` BUG: unable to handle kernel NULL pointer dereference in handle_external_interrupt_irqoff syzbot
@ 2020-03-22 13:43 ` Dmitry Vyukov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Vyukov @ 2020-03-22 13:43 UTC (permalink / raw)
To: syzbot
Cc: Borislav Petkov, clang-built-linux, David Miller, David Howells,
H. Peter Anvin, Jim Mattson, Joerg Roedel, kuba, KVM list,
linux-afs, LKML, Ingo Molnar, netdev, Paolo Bonzini,
Christopherson, Sean J, syzkaller-bugs, Thomas Gleixner,
Vitaly Kuznetsov, wanpengli, the arch/x86 maintainers
On Sun, Mar 22, 2020 at 2:29 PM syzbot
<syzbot+3f29ca2efb056a761e38@syzkaller.appspotmail.com> wrote:
>
> syzbot has bisected this bug to:
>
> commit f71dbf2fb28489a79bde0dca1c8adfb9cdb20a6b
> Author: David Howells <dhowells@redhat.com>
> Date: Thu Jan 30 21:50:36 2020 +0000
>
> rxrpc: Fix insufficient receive notification generation
This is unrelated.
Somehow the crash wasn't reproduced again on the same commit. Can it
depend on host CPU type maybe?
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1483bb19e00000
> start commit: b74b991f Merge tag 'block-5.6-20200320' of git://git.kerne..
> git tree: upstream
> final crash: https://syzkaller.appspot.com/x/report.txt?x=1683bb19e00000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1283bb19e00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=6dfa02302d6db985
> dashboard link: https://syzkaller.appspot.com/bug?extid=3f29ca2efb056a761e38
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1199c0c5e00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15097373e00000
>
> Reported-by: syzbot+3f29ca2efb056a761e38@syzkaller.appspotmail.com
> Fixes: f71dbf2fb284 ("rxrpc: Fix insufficient receive notification generation")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-03-22 13:29 ` BUG: unable to handle kernel NULL pointer dereference in handle_external_interrupt_irqoff syzbot
2020-03-22 13:43 ` Dmitry Vyukov
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