Re: [iov_iter] 2418c34937: Initiating_system_reboot

[Al Viro]

On Wed, Apr 28, 2021 at 10:37:47AM +0800, kernel test robot wrote:
> 
> 
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-9):
> 
> commit: 2418c34937c42a30ef4bccd923ad664a89e1fbd4 ("iov_iter: optimize iov_iter_advance() for iovec and kvec")
> https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git untested.iov_iter
> 
> 
> in testcase: boot
> 
> on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):

Could you try https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git for-lkp
on the same test and see what (if anything) gets spewed into dmesg?