Re: [PATCH v5 3/3] serial: core: Fix serial core controller port name to show controller id

[Mark Brown]

On Wed, Aug 02, 2023 at 04:15:28PM +0800, kernel test robot wrote:

> kernel test robot noticed machine hang on:

> commit: 4de64f4800a581e7eeba6392b3b2ce2131195145 ("[PATCH v5 3/3] serial: core: Fix serial core controller port name to show controller id")
> url: https://github.com/intel-lab-lkp/linux/commits/Tony-Lindgren/serial-core-Controller-id-cannot-be-negative/20230725-134452
> base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/tty.git tty-testing
> patch link: https://lore.kernel.org/all/20230725054216.45696-4-tony@xxxxxxxxxxx/
> patch subject: [PATCH v5 3/3] serial: core: Fix serial core controller port name to show controller id
> 
> in testcase: boot
> 
> compiler: gcc-12
> test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory

I've also bisected this commit as causing boot hangs on at least the
i.MX8MP-EVK, though most of the boards in my lab and a huge swathe of
those in KernelCI are out:

   https://linux.kernelci.org/test/job/next/branch/master/kernel/next-20230802/plan/baseline/

which is having a pretty devastating effect on -next testing.

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