Messages in this thread | | | Date | Mon, 21 Nov 2022 12:29:56 +0100 | From | Peter Zijlstra <> | Subject | Re: [tip:x86/mm] [x86/mm] 127960a055: WARNING:at_arch/x86/include/asm/kfence.h:#kfence_protect |
| |
On Sun, Nov 20, 2022 at 04:40:51PM +0800, kernel test robot wrote: > > hi, PeterZ, > > we noticed this is a fix for > "[tip:x86/mm] [x86/mm] b389949485: WARNING:at_arch/x86/mm/pat/set_memory.c:#__change_page_attr" > we reported before on > https://lore.kernel.org/all/202211061748.eb591682-oliver.sang@intel.com/ > we noticed it brought below issue which is persistent in our tests. FYI > > > Greeting, > > FYI, we noticed WARNING:at_arch/x86/include/asm/kfence.h:#kfence_protect due to commit (built with gcc-11): > > commit: 127960a05548ea699a95791669e8112552eb2452 ("x86/mm: Inhibit _PAGE_NX changes from cpa_process_alias()") > https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git x86/mm > > 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): > > > +----------------------------------------------------------+------------+------------+ > | | 5ab815e377 | 127960a055 | > +----------------------------------------------------------+------------+------------+ > | WARNING:at_arch/x86/include/asm/kfence.h:#kfence_protect | 0 | 15 | > | RIP:kfence_protect | 0 | 15 | > | WARNING:at_mm/kfence/core.c:#kfence_protect | 0 | 15 | > +----------------------------------------------------------+------------+------------+ > > > If you fix the issue, kindly add following tag > | Reported-by: kernel test robot <oliver.sang@intel.com> > | Link: https://lore.kernel.org/oe-lkp/202211201642.b65c9d2f-oliver.sang@intel.com > > > [ 1.269844][ T0] ------------[ cut here ]------------ > [ 1.270843][ T0] WARNING: CPU: 0 PID: 0 at arch/x86/include/asm/kfence.h:46 kfence_protect (arch/x86/include/asm/kfence.h:46 mm/kfence/core.c:235)
Should be fixed by:
https://lkml.kernel.org/r/41ac24c4-6c95-d946-2679-c1be2cb20536@intel.com
I think.
| |