I get lots of these now: Jun 02 02:29:21 mframe kernel: BUG: sleeping function called from invalid context at mm/page_alloc.c:3587 Jun 02 02:29:21 mframe kernel: in_atomic(): 1, irqs_disabled(): 0, pid: 7522, name: firefox Jun 02 02:29:21 mframe kernel: CPU: 3 PID: 7522 Comm: firefox Tainted: G W 4.4.62-18.6-default #1 Jun 02 02:29:21 mframe kernel: Hardware name: Gigabyte Technology Co., Ltd. Default string/X99-UD4-CF, BIOS F22 06/1 Jun 02 02:29:21 mframe kernel: 0000000000000000 ffffffff81328b07 0000000000000000 00000000026200c0 Jun 02 02:29:21 mframe kernel: ffffffff811946f1 ffff881f76917bbc ffffffff8121ac31 0040000000000141 Jun 02 02:29:21 mframe kernel: 0000000002020200 0000000000000246 00000000026000c0 0202020000000000 Jun 02 02:29:21 mframe kernel: Call Trace: Jun 02 02:29:21 mframe kernel: [<ffffffff81019ea9>] dump_trace+0x59/0x320 Jun 02 02:29:21 mframe kernel: [<ffffffff8101a26a>] show_stack_log_lvl+0xfa/0x180 Jun 02 02:29:21 mframe kernel: [<ffffffff8101b011>] show_stack+0x21/0x40 Jun 02 02:29:21 mframe kernel: [<ffffffff81328b07>] dump_stack+0x5c/0x85 Jun 02 02:29:21 mframe kernel: [<ffffffff811946f1>] __alloc_pages_nodemask+0x451/0xbc0 Jun 02 02:29:21 mframe kernel: [<ffffffff811dcc0f>] alloc_pages_current+0x7f/0x100 Jun 02 02:29:21 mframe kernel: [<ffffffff810688dc>] __change_page_attr+0x11c/0xa20 Jun 02 02:29:21 mframe kernel: [<ffffffff8106924e>] __change_page_attr_set_clr+0x6e/0x2e0 Jun 02 02:29:21 mframe kernel: [<ffffffff81069602>] change_page_attr_set_clr+0x142/0x420 Jun 02 02:29:21 mframe kernel: [<ffffffff8106a55f>] set_pages_ro+0x4f/0x60 Jun 02 02:29:21 mframe kernel: [<ffffffff811cc654>] pgtable_trans_huge_deposit+0x64/0x110 Jun 02 02:29:21 mframe kernel: [<ffffffff811f1763>] do_huge_pmd_anonymous_page+0x2c3/0x530 Jun 02 02:29:21 mframe kernel: [<ffffffff811bd72a>] handle_mm_fault+0x49a/0x570 Jun 02 02:29:21 mframe kernel: [<ffffffff810667bf>] __do_page_fault+0x1af/0x450 Jun 02 02:29:21 mframe kernel: [<ffffffff81066a8b>] do_page_fault+0x2b/0x70 Jun 02 02:29:21 mframe kernel: [<ffffffff816104c8>] page_fault+0x28/0x30 Jun 02 02:29:21 mframe kernel: DWARF2 unwinder stuck at page_fault+0x28/0x30 Jun 02 02:29:21 mframe kernel: Jun 02 02:29:21 mframe kernel: Leftover inexact backtrace: Jun 02 02:29:22 mframe kernel: BUG: sleeping function called from invalid context at mm/page_alloc.c:3587 Jun 02 02:29:22 mframe kernel: in_atomic(): 1, irqs_disabled(): 0, pid: 7522, name: firefox Jun 02 02:29:22 mframe kernel: CPU: 7 PID: 7522 Comm: firefox Tainted: G W 4.4.62-18.6-default #1 Jun 02 02:29:22 mframe kernel: Hardware name: Gigabyte Technology Co., Ltd. Default string/X99-UD4-CF, BIOS F22 06/1 Jun 02 02:29:22 mframe kernel: 0000000000000000 ffffffff81328b07 0000000000000000 00000000026200c0 Jun 02 02:29:22 mframe kernel: ffffffff811946f1 ffff881f76917bbc ffffffff8121ac31 00400000cf25d9d0 Jun 02 02:29:22 mframe kernel: ffff881f76918000 ffff881fad80cd00 00000000026000c0 ffff881f76917f28 Jun 02 02:29:22 mframe kernel: Call Trace: Jun 02 02:29:22 mframe kernel: [<ffffffff81019ea9>] dump_trace+0x59/0x320 Jun 02 02:29:22 mframe kernel: [<ffffffff8101a26a>] show_stack_log_lvl+0xfa/0x180 Jun 02 02:29:22 mframe kernel: [<ffffffff8101b011>] show_stack+0x21/0x40 Jun 02 02:29:22 mframe kernel: [<ffffffff81328b07>] dump_stack+0x5c/0x85 Jun 02 02:29:22 mframe kernel: [<ffffffff811946f1>] __alloc_pages_nodemask+0x451/0xbc0 Jun 02 02:29:22 mframe kernel: [<ffffffff811dcc0f>] alloc_pages_current+0x7f/0x100 Jun 02 02:29:22 mframe kernel: [<ffffffff810688dc>] __change_page_attr+0x11c/0xa20 Jun 02 02:29:22 mframe kernel: [<ffffffff8106924e>] __change_page_attr_set_clr+0x6e/0x2e0 Jun 02 02:29:22 mframe kernel: [<ffffffff81069602>] change_page_attr_set_clr+0x142/0x420 Jun 02 02:29:22 mframe kernel: [<ffffffff8106a55f>] set_pages_ro+0x4f/0x60 Jun 02 02:29:22 mframe kernel: [<ffffffff811cc654>] pgtable_trans_huge_deposit+0x64/0x110 Jun 02 02:29:22 mframe kernel: [<ffffffff811f1763>] do_huge_pmd_anonymous_page+0x2c3/0x530 Jun 02 02:29:22 mframe kernel: [<ffffffff811bd72a>] handle_mm_fault+0x49a/0x570 Jun 02 02:29:22 mframe kernel: [<ffffffff810667bf>] __do_page_fault+0x1af/0x450 Jun 02 02:29:22 mframe kernel: [<ffffffff81066a8b>] do_page_fault+0x2b/0x70 Jun 02 02:29:22 mframe kernel: [<ffffffff816104c8>] page_fault+0x28/0x30 Jun 02 02:29:22 mframe kernel: DWARF2 unwinder stuck at page_fault+0x28/0x30 Jun 02 02:29:22 mframe kernel: Jun 02 02:29:22 mframe kernel: Leftover inexact backtrace: