I'm booting kernel 4.4.x + xen 4.6 -- recently upgraded from kernel 4.3.x,
uname -rm
4.4.0-3.g0567b9b-default x86_64
kernel pkgs are from opensuse repos @
http://download.opensuse.org/repositories/Kernel:/stable/standard
Post-upgrade, I'm seeing the following OOPS on boot; apparently non-fatal, as
the system _does_ subsequently complete boot.
There are a couple of prior mentions on LKML, as yet unaddressed
https://lkml.org/lkml/2015/11/7/57
https://lkml.org/lkml/2016/1/19/134
as well as on Xen ML
http://lists.xen.org/archives/html/xen-devel/2015-11/msg00514.html
Here's the trace,
Jan 20 17:43:49 x001 kernel: ------------[ cut here ]------------
Jan 20 17:43:49 x001 kernel: WARNING: CPU: 0 PID: 1 at
../arch/x86/mm/dump_pagetables.c:225 note_page+0x5e1/0x780()
Jan 20 17:43:49 x001 kernel: x86/mm: Found insecure W+X mapping at
address ffff880000000000/0xffff880000000000
Jan 20 17:43:49 x001 kernel: Modules linked in:
Jan 20 17:43:49 x001 kernel: CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.4.0-3.g0567b9b-default #1
Jan 20 17:43:49 x001 kernel: Hardware name: Supermicro X10SAT/X10SAT,
BIOS 3.0 05/26/2015
Jan 20 17:43:49 x001 kernel: ffffffff81a44e20 ffff880169f57d58
ffffffff8137f639 ffff880169f57da0
Jan 20 17:43:49 x001 kernel: ffff880169f57d90 ffffffff8107d132
ffff880169f57e98 0010000000000027
Jan 20 17:43:49 x001 kernel: 0000000000000004 0000000000000000
0000000000000000 ffff880169f57df0
Jan 20 17:43:49 x001 kernel: Call Trace:
Jan 20 17:43:49 x001 kernel: [<ffffffff8101a095>]
try_stack_unwind+0x175/0x190
Jan 20 17:43:49 x001 kernel: [<ffffffff81018fe9>] dump_trace+0x69/0x3a0
Jan 20 17:43:49 x001 kernel: [<ffffffff8101a0fb>]
show_trace_log_lvl+0x4b/0x60
Jan 20 17:43:49 x001 kernel: [<ffffffff8101942c>]
show_stack_log_lvl+0x10c/0x180
Jan 20 17:43:49 x001 kernel: [<ffffffff8101a195>] show_stack+0x25/0x50
Jan 20 17:43:49 x001 kernel: [<ffffffff8137f639>] dump_stack+0x4b/0x72
Jan 20 17:43:49 x001 kernel: [<ffffffff8107d132>]
warn_slowpath_common+0x82/0xc0
Jan 20 17:43:49 x001 kernel: [<ffffffff8107d1bc>]
warn_slowpath_fmt+0x4c/0x50
Jan 20 17:43:49 x001 kernel: [<ffffffff8106e2b1>] note_page+0x5e1/0x780
Jan 20 17:43:49 x001 kernel: [<ffffffff8106e73e>]
ptdump_walk_pgd_level_core+0x2ee/0x420
Jan 20 17:43:49 x001 kernel: [<ffffffff8106e8a7>]
ptdump_walk_pgd_level_checkwx+0x17/0x20
Jan 20 17:43:49 x001 kernel: [<ffffffff81064b2f>]
mark_rodata_ro+0xef/0x100
Jan 20 17:43:49 x001 kernel: [<ffffffff8169d72d>] kernel_init+0x1d/0xe0
Jan 20 17:43:49 x001 kernel: [<ffffffff816aa40f>]
ret_from_fork+0x3f/0x70
Jan 20 17:43:49 x001 kernel: DWARF2 unwinder stuck at
ret_from_fork+0x3f/0x70
Jan 20 17:43:49 x001 kernel:
Jan 20 17:43:49 x001 kernel: Leftover inexact backtrace:
Jan 20 17:43:49 x001 kernel: [<ffffffff8169d710>] ? rest_init+0x90/0x90
Jan 20 17:43:49 x001 kernel: ---[ end trace 3cc91a447d30cdcf ]---
Jan 20 17:43:49 x001 kernel: x86/mm: Checked W+X mappings: FAILED, 4090
W+X pages found.
No sure what additional info's helpful; let me know specific, and I can provide.
Thanks.
