Dear Linux folks,


With Linux 4.19-rc4+ and `CONFIG_DEBUG_WX=y`, I see the message below on
the ASRock E350M1.

> [    1.813378] Freeing unused kernel image memory: 1112K
> [    1.818662] Write protecting the kernel text: 8708k
> [    1.818987] Write protecting the kernel read-only data: 2864k
> [    1.818989] NX-protecting the kernel data: 5628k
> [    1.819265] ------------[ cut here ]------------
> [    1.819272] x86/mm: Found insecure W+X mapping at address (ptrval)/0xc00a0000
> [    1.819290] WARNING: CPU: 1 PID: 1 at arch/x86/mm/dump_pagetables.c:283 note_page+0x6c9/0x6f0
> [    1.819291] Modules linked in:
> [    1.819300] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc4-00081-geba2d6b34a32 #204
> [    1.819301] Hardware name: ASROCK E350M1/E350M1, BIOS 4.8-1533-gfcc2950a60 09/18/2018
> [    1.819306] EIP: note_page+0x6c9/0x6f0
> [    1.819310] Code: 89 45 d8 eb c6 b9 90 cb 88 c8 e9 e4 fa ff ff 89 54 24 08 89 54 24 04 c7 04 24 0c ce a4 c8 c6 05 66 6e be c8 01 e8 37 64 00 00 <0f> 0b 8b 56 14 e9 15 fa ff ff 8b 46 18 e9 3e fb ff ff 8d 74 26 00
> [    1.819313] EAX: 00000041 EBX: 80000000 ECX: 00000001 EDX: c8d51008
> [    1.819315] ESI: f7127f3c EDI: 00000000 EBP: f7127eec ESP: f7127ea8
> [    1.819318] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00210296
> [    1.819320] CR0: 80050033 CR2: 00000000 CR3: 08d40000 CR4: 000006f0
> [    1.819321] Call Trace:
> [    1.819334]  ? set_memory_decrypted+0x10/0x10
> [    1.819337]  ? set_memory_decrypted+0x10/0x10
> [    1.819341]  ptdump_walk_pgd_level_core+0x2b6/0x310
> [    1.819348]  ptdump_walk_pgd_level_checkwx+0x20/0x22
> [    1.819352]  mark_rodata_ro+0x105/0x10d
> [    1.819357]  ? rest_init+0x8a/0x8a
> [    1.819359]  kernel_init+0x34/0xe5
> [    1.819363]  ret_from_fork+0x1c/0x38
> [    1.819367] ---[ end trace 4e9dc382e734b1d8 ]---
> [    1.819834] x86/mm: Checked W+X mappings: FAILED, 96 W+X pages found.

Please find the full log attached.

I do not notice any problems with the system, but maybe something can be 
done to get rid of these.


Kind regards,

Paul