* kernel panic: corrupted stack end in corrupted
@ 2019-06-20 13:17 syzbot
2019-06-20 21:53 ` John Fastabend
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2019-06-20 13:17 UTC (permalink / raw)
To: ast, daniel, john.fastabend, linux-kernel, netdev, syzkaller-bugs
Hello,
syzbot found the following crash on:
HEAD commit: 29f785ff Merge branch 'fixes' of git://git.kernel.org/pub/..
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=1158d411a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=e5c77f8090a3b96b
dashboard link: https://syzkaller.appspot.com/bug?extid=b764c7ca388222ddfb17
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=100ca932a00000
The bug was bisected to:
commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
Author: John Fastabend <john.fastabend@gmail.com>
Date: Sat Jun 30 13:17:47 2018 +0000
bpf: sockhash fix omitted bucket lock in sock_close
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=135e8a3aa00000
final crash: https://syzkaller.appspot.com/x/report.txt?x=10de8a3aa00000
console output: https://syzkaller.appspot.com/x/log.txt?x=175e8a3aa00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b764c7ca388222ddfb17@syzkaller.appspotmail.com
Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 8770 Comm: syz-executor.4 Not tainted 5.2.0-rc5+ #57
Hardware name: Google GooglSeaBIOS (version 1.8.2-20190503_170316-google)
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 2+ messages in thread
* RE: kernel panic: corrupted stack end in corrupted
2019-06-20 13:17 kernel panic: corrupted stack end in corrupted syzbot
@ 2019-06-20 21:53 ` John Fastabend
0 siblings, 0 replies; 2+ messages in thread
From: John Fastabend @ 2019-06-20 21:53 UTC (permalink / raw)
To: syzbot, ast, daniel, john.fastabend, linux-kernel, netdev,
syzkaller-bugs
syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 29f785ff Merge branch 'fixes' of git://git.kernel.org/pub/..
> git tree: net
> console output: https://syzkaller.appspot.com/x/log.txt?x=1158d411a00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=e5c77f8090a3b96b
> dashboard link: https://syzkaller.appspot.com/bug?extid=b764c7ca388222ddfb17
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=100ca932a00000
>
> The bug was bisected to:
>
> commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
> Author: John Fastabend <john.fastabend@gmail.com>
> Date: Sat Jun 30 13:17:47 2018 +0000
>
> bpf: sockhash fix omitted bucket lock in sock_close
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=135e8a3aa00000
> final crash: https://syzkaller.appspot.com/x/report.txt?x=10de8a3aa00000
> console output: https://syzkaller.appspot.com/x/log.txt?x=175e8a3aa00000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+b764c7ca388222ddfb17@syzkaller.appspotmail.com
> Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")
>
> Kernel panic - not syncing: corrupted stack end detected inside scheduler
> CPU: 0 PID: 8770 Comm: syz-executor.4 Not tainted 5.2.0-rc5+ #57
> Hardware name: Google GooglSeaBIOS (version 1.8.2-20190503_170316-google)
>
I believe this is the same or similar bug to the others found with
sockmap + ulp running. Will have fixes shortly.
Thanks,
John
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2019-06-20 21:53 ` John Fastabend
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