lkml.org 
[lkml]   [2019]   [Jun]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 4/3] x86/fpu: don't use current->mm to check for a kthread
On Tue, Jun 04, 2019 at 07:54:12PM +0200, Christoph Hellwig wrote:
> current->mm can be non-NULL if a kthread calls use_mm. Check for
> PF_KTHREAD instead to decide when to store user mode FP state.
>
> Fixes: 2722146eb784 ("x86/fpu: Remove fpu->initialized")
> Reported-by: Peter Zijlstra <peterz@infradead.org>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> arch/x86/include/asm/fpu/internal.h | 6 +++---
> arch/x86/kernel/fpu/core.c | 3 ++-
> 2 files changed, 5 insertions(+), 4 deletions(-)

I had to take this one first because of the Fixes: tag and expedite it
through tip:x86/urgent. Check the tip-bot notification mail whether it
is still ok.

I'll redo the other ones ontop, or you can if you feel bored. :)

Thx.

--
Regards/Gruss,
Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

\
 
 \ /
  Last update: 2019-06-13 21:05    [W:0.075 / U:1.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site