Re: general protection fault in fdb_find_rcu

[Nikolay Aleksandrov]

On 30/12/2018 06:01, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:ÂÂÂ 90cadbbf341d Merge git://git.kernel.org/pub/scm/linux/kern..
> git tree:ÂÂÂÂÂÂ net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1745c69b400000
> kernel config:Â https://syzkaller.appspot.com/x/.config?x=9d41c8529d7e7362
> dashboard link: https://syzkaller.appspot.com/bug?extid=017b1f61c82a1c3e7efd
> compiler:ÂÂÂÂÂÂ gcc (GCC) 8.0.1 20180413 (experimental)
> syz repro:ÂÂÂÂÂ https://syzkaller.appspot.com/x/repro.syz?x=15babaab400000
> C reproducer:ÂÂ https://syzkaller.appspot.com/x/repro.c?x=14c6142d400000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+017b1f61c82a1c3e7efd@xxxxxxxxxxxxxxxxxxxxxxxxx
> 

Ah yes, good catch. We've missed this obvious bug during the review.
A patch is on its way, just need to run a few tests.

Cheers,
 Nik