lkml.org 
[lkml]   [2021]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [syzbot] general protection fault in inet_csk_accept
From
Date
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


\
 
 \ /
  Last update: 2021-12-10 15:38    [W:0.037 / U:1.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site