Re: [PATCH v3 2/2] x86/fpu: Update the debug flow for x86_task_fpu()

[Oleg Nesterov]

On 08/08, Lai, Yi wrote:
>
> [   17.474769] WARNING: CPU: 1 PID: 731 at arch/x86/kernel/fpu/core.c:61 x86_task_fpu+0x76/0x90

...

> [   17.481244]  xfpregs_get+0x9c/0x1e0

...

> [   17.485304]  do_coredump+0x370e/0x5060

Damn, I was going to check the ptrace / coredump paths but didn't have
time and then forgot :/

For now, I think we need to remove PF_USER_WORKER from x86_task_fpu().
Then, we add it back later.

It is not clear what should we do if debugger does xfpregs_set()...

Oleg.