Re: WARNING: locking bug in tomoyo_supervisor

From: Sergey Senozhatsky
Date: Wed Apr 22 2020 - 21:50:16 EST


On (20/04/17 13:37), Tetsuo Handa wrote:
> On 2020/04/17 7:05, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit: 4f8a3cc1 Merge tag 'x86-urgent-2020-04-12' of git://git.ke..
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=1599027de00000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=3bfbde87e8e65624
> > dashboard link: https://syzkaller.appspot.com/bug?extid=1c36440b364ea3774701
> > compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150733cde00000
>
> This seems to be a misattributed report explained at https://lkml.kernel.org/r/20190924140241.be77u2jne3melzte@xxxxxxxxxxxxxxx .
> Petr and Sergey, how is the progress of making printk() asynchronous? When can we expect that work to be merged?

I'd say that lockless logbuf probably will land sometime around 5.8+.
Async printk() - unknown.

-ss