Re: [LKP] [locking/mutex] e274795ea7 WARNING: CPU: 0 PID: 1 at arch/x86/include/asm/fpu/internal.h:348 __switch_to
On Sat, Feb 18, 2017 at 04:57:46PM +0800, Fengguang Wu wrote:
Hi Peter,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit e274795ea7b7caa0fd74ef651594382a69e2a951
Author: Peter Zijlstra <peterz(a)infradead.org>
AuthorDate: Wed Jan 11 14:17:48 2017 +0100
Commit: Ingo Molnar <mingo(a)kernel.org>
CommitDate: Sat Jan 14 11:14:38 2017 +0100
That commit has been in the tree for over a month now.. And I've never
seen a warning like this before.
locking/mutex: Fix mutex handoff
[ 13.377261] Write protecting the kernel text: 15320k
[ 13.378910] Write protecting the kernel read-only data: 6316k
[ 13.380655] NX-protecting the kernel data: 9256k
[ 13.382475] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 13.384781] ------------[ cut here ]------------
[ 13.386327] WARNING: CPU: 0 PID: 1 at arch/x86/include/asm/fpu/internal.h:348
__switch_to+0x1b6/0x260
What tree is this? on current next/master that file doesn't have a WARN
on that line.