Messages in this thread | | | Subject | Re: INFO: task hung in hub_port_init | From | Shuah Khan <> | Date | Mon, 20 Sep 2021 08:31:08 -0600 |
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On 9/18/21 7:53 AM, Alan Stern wrote: > On Sat, Sep 18, 2021 at 10:17:26AM +0800, Hao Sun wrote: >> Alan Stern <stern@rowland.harvard.edu> 于2021年9月18日周六 上午10:02写道: >>> >>> On Sat, Sep 18, 2021 at 09:56:52AM +0800, Hao Sun wrote: >>>> Hi Alan, >>>> >>>> Alan Stern <stern@rowland.harvard.edu> 于2021年9月13日周一 下午9:55写道: >>>>> >>>>> On Mon, Sep 13, 2021 at 11:13:15AM +0800, Hao Sun wrote: >>>>>> Hello, >>>>>> >>>>>> When using Healer to fuzz the Linux kernel, the following crash was triggered. >>>>>> >>>>>> HEAD commit: ac08b1c68d1b Merge tag 'pci-v5.15-changes' >>>>>> git tree: upstream >>>>>> console output: >>>>>> https://drive.google.com/file/d/1ZeDIMe-DoY3fB32j2p5ifgpq-Lc5N74I/view?usp=sharing >>>>>> kernel config: https://drive.google.com/file/d/1qrJUXD8ZIeAkg-xojzDpp04v9MtQ8RR6/view?usp=sharing >>>>>> Syzlang reproducer: >>>>>> https://drive.google.com/file/d/1tZe8VmXfxoPqlNpzpGOd-e5WCSWgbkxB/view?usp=sharing >>>>>> Similar report: >>>>>> https://groups.google.com/g/syzkaller-bugs/c/zX55CUzjBOY/m/uf91r0XqAgAJ >>>>>> >>>>>> Sorry, I don't have a C reproducer for this crash but have a Syzlang >>>>>> reproducer. Also, hope the symbolized report can help. >>>>>> Here are the instructions on how to execute Syzlang prog: >>>>>> https://github.com/google/syzkaller/blob/master/docs/executing_syzkaller_programs.md >>>>>> >>>>>> If you fix this issue, please add the following tag to the commit: >>>>>> Reported-by: Hao Sun <sunhao.th@gmail.com> >>>>> >>>>> There's not much hope of finding the cause of a problem like this >>>>> without seeing the kernel log. >>>>> >>>> >>>> Healer found another Syzlang prog to reproduce this task hang: >>>> https://paste.ubuntu.com/p/HCNYbKJYtx/ >>>> >>>> Also here is a very simple script to execute the reproducer: >>>> https://paste.ubuntu.com/p/ZTGmvFSP6d/ >>>> >>>> The `syz-execprog` and `syz-executor` are needed, so please build >>>> Syzkaller first before running the script. >>>> Hope this can help to find the root cause of the problem. >>> >>> I don't have time to install and figure out how to use Healer and >>> Syzkaller. But if you run the reproducer and post the kernel log, >>> I'll take a look at it. >>> >> >> Just executed the reproducer, here is the full log: >> https://paste.ubuntu.com/p/x43SqQy8PX/ > > The log indicates that the problem is related to the vhci-hcd driver > somehow. I don't know why those "Module has invalid ELF structures" > errors keep appearing, starting in line 1946 of the log. > > Alan Stern >
Thank you. I will take a look.
thanks, -- Shuah
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