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SubjectRe: [iov_iter] 2418c34937: Initiating_system_reboot
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):
>
>
> +--------------------------+------------+------------+
> | | c5f070c68e | 2418c34937 |
> +--------------------------+------------+------------+
> | boot_failures | 0 | 11 |
> | Initiating_system_reboot | 0 | 11 |
> +--------------------------+------------+------------+
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@intel.com>

Could you run it with soft_panic=1 in command line? Alternatively, some
information about how to reproduce that without running hell knows what
as root on host would be very welcome; I can't imagine a single reason
for needing root to run qemu, to be honest...

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