On 6/1/21 6:14 AM, Andrew Morton wrote:

On Sun, 30 May 2021 17:46:48 +0800 kernel test robot [off-list ref] wrote:

quoted

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b90e90f40b4ff23c753126008bf4713a42353af6
commit: dd4ae78a21fc05d91d841e499dddd057ad64a4df mm: migrate: simplify the logic for handling permanent failure

migrate_pages() isn't a good place to be using lots of stack.

Am I correct in assuming that this is a bisection result?

Hi Andrew,

I have confirmed the bisection is good.

I don't immediately see why dd4ae78a21fc05d91d would be the main cause
of this.

Hi Clang Team, could you share some experience about this kind of warning?

Best Regards,
Rong Chen