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Message-ID: <CACT4Y+YEE1g-_+3VWS=+tsv9vMOFi3P3rbTj2b2ivbb=+=UeaA@mail.gmail.com>
Date:   Tue, 13 Apr 2021 09:57:26 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+cc36fd07553c0512f5f7@...kaller.appspotmail.com>
Cc:     andrii@...nel.org, Andrii Nakryiko <andriin@...com>,
        Alexei Starovoitov <ast@...nel.org>, bpf <bpf@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Daniel Borkmann <daniel@...earbox.net>,
        David Miller <davem@...emloft.net>,
        David Ahern <dsahern@...il.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Martin KaFai Lau <kafai@...com>,
        KP Singh <kpsingh@...omium.org>, kpsingh@...nel.org,
        Jakub Kicinski <kuba@...nel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Ingo Molnar <mingo@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        mmullins@...x.us, netdev <netdev@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Song Liu <songliubraving@...com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Yonghong Song <yhs@...com>
Subject: Re: [syzbot] BUG: unable to handle kernel paging request in bpf_trace_run2

On Thu, Apr 1, 2021 at 8:01 PM syzbot
<syzbot+cc36fd07553c0512f5f7@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit befe6d946551d65cddbd32b9cb0170b0249fd5ed
> Author: Steven Rostedt (VMware) <rostedt@...dmis.org>
> Date:   Wed Nov 18 14:34:05 2020 +0000
>
>     tracepoint: Do not fail unregistering a probe due to memory failure
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14f0260ed00000
> start commit:   12450081 libbpf: Fix native endian assumption when parsing..
> git tree:       bpf
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5ac0d21536db480b
> dashboard link: https://syzkaller.appspot.com/bug?extid=cc36fd07553c0512f5f7
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1365d2c3900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16d5f08d900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: tracepoint: Do not fail unregistering a probe due to memory failure
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Looks reasonable:

#syz fix:
tracepoint: Do not fail unregistering a probe due to memory failure

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