lkml.org 
[lkml]   [2018]   [Apr]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: KASAN: use-after-free Read in alloc_pid
syzbot <syzbot+7a1cff37dbbef9e7ba4c@syzkaller.appspotmail.com> writes:

> Hello,
>
> syzbot hit the following crash on upstream commit
> 9dd2326890d89a5179967c947dab2bab34d7ddee (Fri Mar 30 17:29:47 2018 +0000)
> Merge tag 'ceph-for-4.16-rc8' of git://github.com/ceph/ceph-client
> syzbot dashboard link:
> https://syzkaller.appspot.com/bug?extid=7a1cff37dbbef9e7ba4c
>
> So far this crash happened 4 times on upstream.
>
> Unfortunately, I don't have any reproducer for this crash yet.

Do you have any of the other traces? This looks like a something is
calling put_pid_ns more than it is calling get_pid_ns causing a
reference count mismatch.

If this is not: 9ee332d99e4d5a97548943b81c54668450ce641b

I could use a few more hints to help narrow down what is going wrong.

It would be nice to know what the other 3 crashes looked like and
exactly which upstream they were on.

Eric

\
 
 \ /
  Last update: 2018-04-03 01:02    [W:0.077 / U:0.920 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site