Messages in this thread | | | Subject | Re: [syzbot] general protection fault in inet_csk_accept | From | Paolo Abeni <> | Date | Fri, 10 Dec 2021 15:37:54 +0100 |
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On Fri, 2021-12-10 at 03:13 -0800, Eric Dumazet wrote: > On Fri, Dec 10, 2021 at 3:09 AM syzbot > <syzbot+e4d843bb96a9431e6331@syzkaller.appspotmail.com> wrote: > > > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 2a987e65025e Merge tag 'perf-tools-fixes-for-v5.16-2021-12.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=166f73adb00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=221ffc09e39ebbd1 > > dashboard link: https://syzkaller.appspot.com/bug?extid=e4d843bb96a9431e6331 > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16280ae5b00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1000fdc5b00000 > > > > The issue was bisected to: > > > > Note to MPTCP maintainers, I think this issue is MPTCP one,
Indeed it is, thanks for the head-up!
> and the bisection result shown here seems not relevant.
yep.
> The C repro is however correct, I trigger an immediate crash.
The repro is not triggering here - but I'm using a different kconfig. Still the repro itself gives a good hint on the root cause. I'm testing a patch with syzbot.
Thanks!
Paolo
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