Re: [linux-stable-rc:linux-4.19.y] [panic] 4d00e68cfc: WARNING:at_fs/sysfs/file.c:#sysfs_emit_at

[Eric Biggers]

On Tue, Mar 14, 2023 at 04:34:22PM +0800, kernel test robot wrote:
> Greeting,
> 
> FYI, we noticed WARNING:at_fs/sysfs/file.c:#sysfs_emit_at due to commit (built with gcc-11):
> 
> commit: 4d00e68cfcfd91d3a8c794d47617429a96d623ed ("panic: Expose "warn_count" to sysfs")
> https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y

It turns out this is a longstanding bug in 4.19.y and 4.14.y caused by a bad
backport, which is not actually related to the above commit (or the patch series
that contained it) at all.  I've sent out fixes:

4.19: https://lore.kernel.org/r/20230317062743.313169-1-ebiggers@xxxxxxxxxx
4.14: https://lore.kernel.org/r/20230317062801.313217-1-ebiggers@xxxxxxxxxx

- Eric