Public bug reported:
VM runniung under XEN
xen_version : 4.6.5
VM showing error
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Jul 29 14:59:29 plexvm kernel: [ 1.776567] ------------[ cut here
]------------
Jul 29 14:59:29 plexvm kernel: [ 1.776571] x86/mm: Found insecure W+X
mapping at address (ptrval)/0xffff880000000000
Jul 29 14:59:29 plexvm kernel: [ 1.776578] WARNING: CPU: 7 PID: 1 at
/build/linux-hwe-SYRsgd/linux-hwe-4.15.0/arch/x86/mm/dump_pagetables.c:266
note_page+0x5d2/0x770
Jul 29 14:59:29 plexvm kernel: [ 1.776579] Modules linked in:
Jul 29 14:59:29 plexvm kernel: [ 1.776582] CPU: 7 PID: 1 Comm: swapper/0 Not
tainted 4.15.0-29-generic #31~16.04.1-Ubuntu
Jul 29 14:59:29 plexvm kernel: [ 1.776584] RIP: e030:note_page+0x5d2/0x770
Jul 29 14:59:29 plexvm kernel: [ 1.776585] RSP: e02b:ffffc90040c4fdf8
EFLAGS: 00010282
Jul 29 14:59:29 plexvm kernel: [ 1.776586] RAX: 0000000000000000 RBX:
ffffc90040c4fe90 RCX: ffffffff82462828
Jul 29 14:59:29 plexvm kernel: [ 1.776587] RDX: 0000000000000001 RSI:
0000000000000001 RDI: 0000000000000201
Jul 29 14:59:29 plexvm kernel: [ 1.776588] RBP: ffffc90040c4fe30 R08:
0000000000000001 R09: 000000000000010f
Jul 29 14:59:29 plexvm kernel: [ 1.776589] R10: ffff8801f9042000 R11:
000000000000010f R12: 0010000000000067
Jul 29 14:59:29 plexvm kernel: [ 1.776590] R13: 0000000000000005 R14:
0000000000000000 R15: 0000000000000000
Jul 29 14:59:29 plexvm kernel: [ 1.776594] FS: 0000000000000000(0000)
GS:ffff8801effc0000(0000) knlGS:0000000000000000
Jul 29 14:59:29 plexvm kernel: [ 1.776595] CS: e033 DS: 0000 ES: 0000 CR0:
0000000080050033
Jul 29 14:59:29 plexvm kernel: [ 1.776596] CR2: 00007f02672bede8 CR3:
000000000240a000 CR4: 0000000000040660
Jul 29 14:59:29 plexvm kernel: [ 1.776597] Call Trace:
Jul 29 14:59:29 plexvm kernel: [ 1.776602]
ptdump_walk_pgd_level_core+0x42e/0x4e0
Jul 29 14:59:29 plexvm kernel: [ 1.776603] ? 0xffffffff81000000
Jul 29 14:59:29 plexvm kernel: [ 1.776605]
ptdump_walk_pgd_level_checkwx+0x19/0x50
Jul 29 14:59:29 plexvm kernel: [ 1.776607] mark_rodata_ro+0xf6/0x100
Jul 29 14:59:29 plexvm kernel: [ 1.776609] ? rest_init+0xb0/0xb0
Jul 29 14:59:29 plexvm kernel: [ 1.776611] kernel_init+0x34/0x110
Jul 29 14:59:29 plexvm kernel: [ 1.776613] ret_from_fork+0x35/0x40
Jul 29 14:59:29 plexvm kernel: [ 1.776614] Code: 48 c7 43 28 00 00 00 00 48
89 43 20 e9 50 fd ff ff 48 8b 73 10 48 c7 c7 e8 68 0c 82 c6 05 93 2a 59 01 01
48 89 f2 e8 ee ea 00 00 <0f> 0b e9 7d fa ff ff 48 8b 70 20 48 c7 c7 9b 67 0c 82
e8 87 08
Jul 29 14:59:29 plexvm kernel: [ 1.776636] ---[ end trace 79a0a9dff294f57b
]---
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-29-generic 4.15.0-29.31~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-29.31~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Mon Jul 30 15:11:52 2018
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1784483
Title:
Kernel reports insecure W+X mappings on each boot
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