Re: [linux-next:pending-fixes] [mm/hugetlb] d3fe1a0a02: WARNING:at_include/linux/hugetlb.h:#huge_pte_lockptr

[David Hildenbrand <david@redhat.com>]

On 31.07.24 09:20, kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed "WARNING:at_include/linux/hugetlb.h:#huge_pte_lockptr" on:
> 
> commit: d3fe1a0a0272723474056e3000717d69923ad901 ("mm/hugetlb: fix hugetlb vs. core-mm PT locking")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git pending-fixes
> 
> [test failed on linux-next/master cd19ac2f903276b820f5d0d89de0c896c27036ed]
> 
> in testcase: trinity
> version: trinity-i386-abe9de86-1_20230429
> with following parameters:
> 
> 	runtime: 300s
> 	group: group-00
> 	nr_groups: 5
> 
> 
> 
> compiler: gcc-11
> test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)
> 
> 
> +------------------------------------------------------+------------+------------+
> |                                                      | e98970a1d2 | d3fe1a0a02 |
> +------------------------------------------------------+------------+------------+
> | WARNING:at_include/linux/hugetlb.h:#huge_pte_lockptr | 0          | 12         |
> | EIP:huge_pte_lockptr                                 | 0          | 12         |
> +------------------------------------------------------+------------+------------+
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@intel.com>
> | Closes: https://lore.kernel.org/oe-lkp/202407311421.95f5c759-lkp@intel.com
> 
> 
> [   39.570466][ T3479] ------------[ cut here ]------------
> [ 39.570921][ T3479] WARNING: CPU: 0 PID: 3479 at include/linux/hugetlb.h:948 huge_pte_lockptr (include/linux/hugetlb.h:948 (discriminator 1))

Helpful! Likely triggers because in that kernel cfg P4D_SIZE is 0.

-- 
Cheers,

David / dhildenb