Re: INFO: task hung in btrfs_alloc_tree_block

[Qu Wenruo]

On 2021/9/14 上午11:22, Hao Sun wrote:
> Qu Wenruo <quwenruo.btrfs@xxxxxxx> 于2021年9月14日周二 上午11:13写道：
> > On 2021/9/14 上午10:44, Hao Sun wrote:
> > > Hello,
> > >
> > > When using Healer to fuzz the latest Linux kernel, the following crash
> > > was triggered.
> > >
> > > HEAD commit: 6880fa6c5660 Linux 5.15-rc1
> > > git tree: upstream
> > > console output:
> > > https://drive.google.com/file/d/1U3ei_jCODG9N5UHOspSRmykrEDSey3Qn/view?usp=sharing
> > > kernel config: https://drive.google.com/file/d/1rUzyMbe5vcs6khA3tL9EHTLJvsUdWcgB/view?usp=sharing
> >
> > Any recorded info for the injected errors during the test?
> >
> > It's hanging on a tree lock, without knowing the error injected, it's
> > really hard to find out what's the cause.
>
> The `task hang` happened without any fault injection.
> Based on the recorded logs
> (https://drive.google.com/file/d/1x7u4JfyeL8WhetacBsPDVXm48SvVJUo7/view?usp=sharing
> and https://drive.google.com/file/d/1U3ei_jCODG9N5UHOspSRmykrEDSey3Qn/view?usp=sharing),
> no fault-injection log was printed before the task hang.

OK, then it seems like a big problem.

Any workload log from the fuzzer so we can try to reproduce?

Or just using the tool?

Thanks,
Qu
> Regards
> Hao