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Message-ID: <20151021052836.GB6024@bbox> Date: Wed, 21 Oct 2015 14:28:36 +0900 From: Minchan Kim <minchan@...nel.org> To: Andrew Morton <akpm@...ux-foundation.org>, "Kirill A. Shutemov" <kirill@...temov.name> Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>, Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...e.cz>, Johannes Weiner <hannes@...xchg.org>, Vlastimil Babka <vbabka@...e.cz> Subject: kernel oops on mmotm-2015-10-15-15-20 I detach this report from my patchset thread because I see below problem with removing MADV_FREE related code and I can reproduce same oops with MADV_FREE + recent patches(both my SetPageDirty and Kirill's pte_mkdirty) within 7 hours. I can not be sure it's THP refcount redesign's problem but it was one of big change in MM between mmotm-2015-10-15-15-20 and mmotm-2015-10-06-16-30 so it could be a culprit. In page_lock_anon_vma_read, anon_vma_root was NULL. I added VM_BUG_ON_PAGE(!root_anon_vma, page) in there and got the result. .. .. Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS page:ffffea0001b81140 count:3 mapcount:1 mapping:ffff88007e806461 index:0x600001445 page:ffffea0001b87bc0 count:3 mapcount:1 mapping:ffff88007e806461 index:0x6000015ef flags: 0x4000000000048019(locked|uptodate|dirty|swapcache|swapbacked) page dumped because: VM_BUG_ON_PAGE(1) page->mem_cgroup:ffff88007f2de000 ------------[ cut here ]------------ kernel BUG at mm/rmap.c:517! invalid opcode: 0000 [#1] SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 24935 Comm: madvise_test Not tainted 4.3.0-rc5-mm1-THP-ref-madv_free+ #1555 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff880000ce8000 ti: ffff8800ada28000 task.ti: ffff8800ada28000 RIP: 0010:[<ffffffff81128f6e>] [<ffffffff81128f6e>] page_lock_anon_vma_read+0x18e/0x190 RSP: 0000:ffff8800ada2b868 EFLAGS: 00010296 RAX: 0000000000000021 RBX: ffffea0001b87bc0 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000282 RDI: ffffffff81830db0 RBP: ffff8800ada2b888 R08: 0000000000000021 R09: ffff8800ba40eb75 R10: 0000000001ff14bc R11: 0000000000000000 R12: ffff88007e806461 R13: ffff88007e806460 R14: 0000000000000000 R15: ffffffff818464c0 FS: 00007f6d93212740(0000) GS:ffff8800bfa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000600003c14000 CR3: 00000000a674b000 CR4: 00000000000006b0 Stack: ffffea0001b87bc0 ffff8800ada2b8f8 ffff88007f2de000 0000000000000000 ffff8800ada2b8d0 ffffffff81129593 ffff880000000000 ffffffff8105f8c0 ffffea0001b87bc0 ffff8800ada2b9f8 ffff88007f2de000 0000000000000000 Call Trace: [<ffffffff81129593>] rmap_walk+0x1b3/0x3f0 [<ffffffff8105f8c0>] ? finish_task_switch+0x70/0x260 [<ffffffff81129973>] page_referenced+0x1a3/0x220 [<ffffffff81127c10>] ? __page_check_address+0x1d0/0x1d0 [<ffffffff81128de0>] ? page_get_anon_vma+0xd0/0xd0 [<ffffffff81127580>] ? anon_vma_ctor+0x40/0x40 [<ffffffff81103e9e>] shrink_page_list+0x5ce/0xdc0 [<ffffffff81104d4c>] shrink_inactive_list+0x18c/0x4b0 [<ffffffff811059af>] shrink_lruvec+0x58f/0x730 [<ffffffff81105c24>] shrink_zone+0xd4/0x280 [<ffffffff81105efd>] do_try_to_free_pages+0x12d/0x3b0 [<ffffffff8110635d>] try_to_free_mem_cgroup_pages+0x9d/0x120 [<ffffffff8114e235>] try_charge+0x175/0x720 [<ffffffff810fdf80>] ? __activate_page+0x230/0x230 [<ffffffff81152005>] mem_cgroup_try_charge+0x85/0x1d0 [<ffffffff8111e69a>] handle_mm_fault+0xc9a/0x1000 [<ffffffff8106215b>] ? __set_cpus_allowed_ptr+0x9b/0x1a0 [<ffffffff81033629>] __do_page_fault+0x189/0x400 [<ffffffff810338ac>] do_page_fault+0xc/0x10 [<ffffffff81428782>] page_fault+0x22/0x30 Code: c9 0f 84 b9 fe ff ff 8d 51 01 89 c8 f0 0f b1 16 39 c1 0f 84 11 ff ff ff 89 c1 eb e3 48 c7 c6 88 02 78 81 48 89 df e8 02 f3 fe ff <0f> 0b 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 45 31 f6 41 55 4c RIP [<ffffffff81128f6e>] page_lock_anon_vma_read+0x18e/0x190 RSP <ffff8800ada2b868> ---[ end trace cfbb87f54f12290e ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled On Tue, Oct 20, 2015 at 10:38:54AM +0900, Minchan Kim wrote: > On Mon, Oct 19, 2015 at 07:01:50PM +0900, Minchan Kim wrote: > > On Mon, Oct 19, 2015 at 03:31:42PM +0900, Minchan Kim wrote: > > > Hello, it's too late since I sent previos patch. > > > https://lkml.org/lkml/2015/6/3/37 > > > > > > This patch is alomost new compared to previos approach. > > > I think this is more simple, clear and easy to review. > > > > > > One thing I should notice is that I have tested this patch > > > and couldn't find any critical problem so I rebased patchset > > > onto recent mmotm(ie, mmotm-2015-10-15-15-20) to send formal > > > patchset. Unfortunately, I start to see sudden discarding of > > > the page we shouldn't do. IOW, application's valid anonymous page > > > was disappeared suddenly. > > > > > > When I look through THP changes, I think we could lose > > > dirty bit of pte between freeze_page and unfreeze_page > > > when we mark it as migration entry and restore it. > > > So, I added below simple code without enough considering > > > and cannot see the problem any more. > > > I hope it's good hint to find right fix this problem. > > > > > > diff --git a/mm/huge_memory.c b/mm/huge_memory.c > > > index d5ea516ffb54..e881c04f5950 100644 > > > --- a/mm/huge_memory.c > > > +++ b/mm/huge_memory.c > > > @@ -3138,6 +3138,9 @@ static void unfreeze_page_vma(struct vm_area_struct *vma, struct page *page, > > > if (is_write_migration_entry(swp_entry)) > > > entry = maybe_mkwrite(entry, vma); > > > > > > + if (PageDirty(page)) > > > + SetPageDirty(page); > > > > The condition of PageDirty was typo. I didn't add the condition. > > Just added. > > > > SetPageDirty(page); > > For the first step to find this bug, I removed all MADV_FREE related > code in mmotm-2015-10-15-15-20. IOW, git checkout 54bad5da4834 > (arm64: add pmd_[dirty|mkclean] for THP) so the tree doesn't have > any core code of MADV_FREE. > > I tested following workloads in my KVM machine. > > 0. make memcg > 1. limit memcg > 2. fork several processes > 3. each process allocates THP page and fill > 4. increase limit of the memcg to swapoff successfully > 5. swapoff > 6. kill all of processes > 7. goto 1 > > Within a few hours, I encounter following bug. > Attached detailed boot log and dmesg result. > > > Initializing cgroup subsys cpu > Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic console=ttyS0,115200 console=tty0 earlyprintk=ttyS0 ignore_loglevel ftrace_dump_on_oops vga=normal root=/dev/vda1 rw > KERNEL supported cpus: > Intel GenuineIntel > x86/fpu: Legacy x87 FPU detected. > x86/fpu: Using 'lazy' FPU context switches. > e820: BIOS-provided physical RAM map: > BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable > BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved > BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved > BIOS-e820: [mem 0x0000000000100000-0x00000000bfffbfff] usable > BIOS-e820: [mem 0x00000000bfffc000-0x00000000bfffffff] reserved > BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved > BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved > > <snip> > > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 > IP: [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > PGD 0 > Oops: 0000 [#1] SMP > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 1 PID: 26445 Comm: sh Not tainted 4.3.0-rc5-mm1-diet-meta+ #1545 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff8800b9af3480 ti: ffff88007fea0000 task.ti: ffff88007fea0000 > RIP: 0010:[<ffffffff810782a9>] [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP: 0018:ffff88007fea3648 EFLAGS: 00010202 > RAX: 0000000000000001 RBX: ffffea0002324900 RCX: ffff88007fea37e8 > RDX: 0000000000000000 RSI: ffff88007fea36e8 RDI: 0000000000000008 > RBP: ffff88007fea3648 R08: ffffffff818446a0 R09: ffff8800b9af4c80 > R10: 0000000000000216 R11: 0000000000000001 R12: ffff88007f58d6e1 > R13: ffff88007f58d6e0 R14: 0000000000000008 R15: 0000000000000001 > FS: 00007f0993e78740(0000) GS:ffff8800bfa20000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000008 CR3: 000000007edee000 CR4: 00000000000006a0 > Stack: > ffff88007fea3678 ffffffff81124ff0 ffffea0002324900 ffff88007fea36e8 > ffff88009ffe8400 0000000000000000 ffff88007fea36c0 ffffffff81125733 > ffff8800bfa34540 ffffffff8105dc9d ffffea0002324900 ffff88007fea37e8 > Call Trace: > [<ffffffff81124ff0>] page_lock_anon_vma_read+0x60/0x180 > [<ffffffff81125733>] rmap_walk+0x1b3/0x3f0 > [<ffffffff8105dc9d>] ? finish_task_switch+0x5d/0x1f0 > [<ffffffff81125b13>] page_referenced+0x1a3/0x220 > [<ffffffff81123e30>] ? __page_check_address+0x1a0/0x1a0 > [<ffffffff81124f90>] ? page_get_anon_vma+0xd0/0xd0 > [<ffffffff81123820>] ? anon_vma_ctor+0x40/0x40 > [<ffffffff8110087b>] shrink_page_list+0x5ab/0xde0 > [<ffffffff8110174c>] shrink_inactive_list+0x18c/0x4b0 > [<ffffffff811023bd>] shrink_lruvec+0x59d/0x740 > [<ffffffff811025f0>] shrink_zone+0x90/0x250 > [<ffffffff811028dd>] do_try_to_free_pages+0x12d/0x3b0 > [<ffffffff81102d3d>] try_to_free_mem_cgroup_pages+0x9d/0x120 > [<ffffffff811496c3>] try_charge+0x163/0x700 > [<ffffffff81149cb4>] mem_cgroup_do_precharge+0x54/0x70 > [<ffffffff81149e45>] mem_cgroup_can_attach+0x175/0x1b0 > [<ffffffff811b2c57>] ? kernfs_iattrs.isra.6+0x37/0xd0 > [<ffffffff81148e70>] ? get_mctgt_type+0x320/0x320 > [<ffffffff810a9d29>] cgroup_migrate+0x149/0x440 > [<ffffffff810aa60c>] cgroup_attach_task+0x7c/0xe0 > [<ffffffff810aa904>] __cgroup_procs_write.isra.33+0x1d4/0x2b0 > [<ffffffff810aaa10>] cgroup_tasks_write+0x10/0x20 > [<ffffffff810a6238>] cgroup_file_write+0x38/0xf0 > [<ffffffff811b54ad>] kernfs_fop_write+0x11d/0x170 > [<ffffffff81153918>] __vfs_write+0x28/0xe0 > [<ffffffff8116e614>] ? __fd_install+0x24/0xc0 > [<ffffffff810784a1>] ? percpu_down_read+0x21/0x50 > [<ffffffff81153e91>] vfs_write+0xa1/0x170 > [<ffffffff81154716>] SyS_write+0x46/0xa0 > [<ffffffff81420a17>] entry_SYSCALL_64_fastpath+0x12/0x6a > Code: 5e 82 3a 00 48 83 c4 08 5b 5d c3 48 89 45 f0 e8 9b 6a 3a 00 48 8b 45 f0 eb df 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 <48> 8b 07 48 89 c2 48 83 c2 01 7e 07 f0 48 0f b1 17 75 f0 48 f7 > RIP [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP <ffff88007fea3648> > CR2: 0000000000000008 > BUG: unable to handle kernel ---[ end trace e81a82c8122b447d ]--- > Kernel panic - not syncing: Fatal exception > > NULL pointer dereference at 0000000000000008 > IP: [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > PGD 0 > Oops: 0000 [#2] SMP > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 10 PID: 59 Comm: khugepaged Tainted: G D 4.3.0-rc5-mm1-diet-meta+ #1545 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff8800b9851a40 ti: ffff8800b985c000 task.ti: ffff8800b985c000 > RIP: 0010:[<ffffffff810782a9>] [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP: 0018:ffff8800b985f778 EFLAGS: 00010202 > RAX: 0000000000000001 RBX: ffffea0002321800 RCX: ffff8800b985f918 > RDX: 0000000000000000 RSI: ffff8800b985f818 RDI: 0000000000000008 > RBP: ffff8800b985f778 R08: ffffffff818446a0 R09: ffff8800b9853240 > R10: 000000000000ba03 R11: 0000000000000001 R12: ffff88007f58d6e1 > R13: ffff88007f58d6e0 R14: 0000000000000008 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff8800bfb40000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000008 CR3: 0000000001808000 CR4: 00000000000006a0 > Stack: > ffff8800b985f7a8 ffffffff81124ff0 ffffea0002321800 ffff8800b985f818 > ffff88009ffe8400 0000000000000000 ffff8800b985f7f0 ffffffff81125733 > ffff8800bfb54540 ffffffff8105dc9d ffffea0002321800 ffff8800b985f918 > Call Trace: > [<ffffffff81124ff0>] page_lock_anon_vma_read+0x60/0x180 > [<ffffffff81125733>] rmap_walk+0x1b3/0x3f0 > [<ffffffff8105dc9d>] ? finish_task_switch+0x5d/0x1f0 > [<ffffffff81125b13>] page_referenced+0x1a3/0x220 > [<ffffffff81123e30>] ? __page_check_address+0x1a0/0x1a0 > [<ffffffff81124f90>] ? page_get_anon_vma+0xd0/0xd0 > [<ffffffff81123820>] ? anon_vma_ctor+0x40/0x40 > [<ffffffff8110087b>] shrink_page_list+0x5ab/0xde0 > [<ffffffff8110174c>] shrink_inactive_list+0x18c/0x4b0 > [<ffffffff811023bd>] shrink_lruvec+0x59d/0x740 > [<ffffffff811025f0>] shrink_zone+0x90/0x250 > [<ffffffff811028dd>] do_try_to_free_pages+0x12d/0x3b0 > [<ffffffff81102d3d>] try_to_free_mem_cgroup_pages+0x9d/0x120 > [<ffffffff811496c3>] try_charge+0x163/0x700 > [<ffffffff8141d1f3>] ? schedule+0x33/0x80 > [<ffffffff8114d45f>] mem_cgroup_try_charge+0x9f/0x1d0 > [<ffffffff811434bc>] khugepaged+0x7cc/0x1ac0 > [<ffffffff81066e01>] ? hrtick_update+0x1/0x70 > [<ffffffff81072430>] ? prepare_to_wait_event+0xf0/0xf0 > [<ffffffff81142cf0>] ? total_mapcount+0x70/0x70 > [<ffffffff81056cd9>] kthread+0xc9/0xe0 > [<ffffffff81056c10>] ? kthread_park+0x60/0x60 > [<ffffffff81420d6f>] ret_from_fork+0x3f/0x70 > [<ffffffff81056c10>] ? kthread_park+0x60/0x60 > Code: 5e 82 3a 00 48 83 c4 08 5b 5d c3 48 89 45 f0 e8 9b 6a 3a 00 48 8b 45 f0 eb df 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 <48> 8b 07 48 89 c2 48 83 c2 01 7e 07 f0 48 0f b1 17 75 f0 48 f7 > RIP [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP <ffff8800b985f778> > CR2: 0000000000000008 > ---[ end trace e81a82c8122b447e ]--- > Shutting down cpus with NMI > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled > > QEMU 2.0.0 monitor - type 'help' for more information > (qemu) s.[Kearly console in setup code > Initializing cgroup subsys cpu > Linux version 4.3.0-rc5-mm1-diet-meta+ (barrios@...x) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04) ) #1545 SMP Tue Oct 20 08:55:45 KST 2015 > Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic console=ttyS0,115200 console=tty0 earlyprintk=ttyS0 ignore_loglevel ftrace_dump_on_oops vga=normal root=/dev/vda1 rw > KERNEL supported cpus: > Intel GenuineIntel > x86/fpu: Legacy x87 FPU detected. > x86/fpu: Using 'lazy' FPU context switches. > e820: BIOS-provided physical RAM map: > BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable > BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved > BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved > BIOS-e820: [mem 0x0000000000100000-0x00000000bfffbfff] usable > BIOS-e820: [mem 0x00000000bfffc000-0x00000000bfffffff] reserved > BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved > BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved > bootconsole [earlyser0] enabled > debug: ignoring loglevel setting. > NX (Execute Disable) protection: active > SMBIOS 2.4 present. > DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > e820: update [mem 0x00000000-0x00000fff] usable ==> reserved > e820: remove [mem 0x000a0000-0x000fffff] usable > e820: last_pfn = 0xbfffc max_arch_pfn = 0x400000000 > MTRR default type: write-back > MTRR fixed ranges enabled: > 00000-9FFFF write-back > A0000-BFFFF uncachable > C0000-FFFFF write-protect > MTRR variable ranges enabled: > 0 base 00C0000000 mask FFC0000000 uncachable > 1 disabled > 2 disabled > 3 disabled > 4 disabled > 5 disabled > 6 disabled > 7 disabled > x86/PAT: PAT not supported by CPU. > Scan for SMP in [mem 0x00000000-0x000003ff] > Scan for SMP in [mem 0x0009fc00-0x0009ffff] > Scan for SMP in [mem 0x000f0000-0x000fffff] > found SMP MP-table at [mem 0x000f0a70-0x000f0a7f] mapped at [ffff8800000f0a70] > mpc: f0a80-f0c44 > Scanning 1 areas for low memory corruption > Base memory trampoline at [ffff880000099000] 99000 size 24576 > init_memory_mapping: [mem 0x00000000-0x000fffff] > [mem 0x00000000-0x000fffff] page 4k > BRK [0x0220e000, 0x0220efff] PGTABLE > BRK [0x0220f000, 0x0220ffff] PGTABLE > BRK [0x02210000, 0x02210fff] PGTABLE > init_memory_mapping: [mem 0xbfc00000-0xbfdfffff] > [mem 0xbfc00000-0xbfdfffff] page 2M > BRK [0x02211000, 0x02211fff] PGTABLE > init_memory_mapping: [mem 0xa0000000-0xbfbfffff] > [mem 0xa0000000-0xbfbfffff] page 2M > init_memory_mapping: [mem 0x80000000-0x9fffffff] > [mem 0x80000000-0x9fffffff] page 2M > init_memory_mapping: [mem 0x00100000-0x7fffffff] > [mem 0x00100000-0x001fffff] page 4k > [mem 0x00200000-0x7fffffff] page 2M > init_memory_mapping: [mem 0xbfe00000-0xbfffbfff] > [mem 0xbfe00000-0xbfffbfff] page 4k > BRK [0x02212000, 0x02212fff] PGTABLE > RAMDISK: [mem 0x7851a000-0x7fffffff] > [ffffea0000000000-ffffea0002ffffff] PMD -> [ffff8800bc400000-ffff8800bf3fffff] on node 0 > Zone ranges: > DMA [mem 0x0000000000001000-0x0000000000ffffff] > DMA32 [mem 0x0000000001000000-0x00000000bfffbfff] > Normal empty > Movable zone start for each node > Early memory node ranges > node 0: [mem 0x0000000000001000-0x000000000009efff] > node 0: [mem 0x0000000000100000-0x00000000bfffbfff] > Initmem setup node 0 [mem 0x0000000000001000-0x00000000bfffbfff] > On node 0 totalpages: 786330 > DMA zone: 64 pages used for memmap > DMA zone: 21 pages reserved > DMA zone: 3998 pages, LIFO batch:0 > DMA32 zone: 12224 pages used for memmap > DMA32 zone: 782332 pages, LIFO batch:31 > Intel MultiProcessor Specification v1.4 > mpc: f0a80-f0c44 > MPTABLE: OEM ID: BOCHSCPU > MPTABLE: Product ID: 0.1 > MPTABLE: APIC at: 0xFEE00000 > mapped APIC to ffffffffff5fd000 ( fee00000) > Processor #0 (Bootup-CPU) > Processor #1 > Processor #2 > Processor #3 > Processor #4 > Processor #5 > Processor #6 > Processor #7 > Processor #8 > Processor #9 > Processor #10 > Processor #11 > Bus #0 is PCI > Bus #1 is ISA > IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 > Int: type 0, pol 1, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 09 > Int: type 0, pol 1, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0b > Int: type 0, pol 1, trig 0, bus 00, IRQ 10, APIC ID 0, APIC INT 0b > Int: type 0, pol 1, trig 0, bus 00, IRQ 14, APIC ID 0, APIC INT 0a > Int: type 0, pol 1, trig 0, bus 00, IRQ 18, APIC ID 0, APIC INT 0a > Int: type 0, pol 0, trig 0, bus 01, IRQ 00, APIC ID 0, APIC INT 02 > Int: type 0, pol 0, trig 0, bus 01, IRQ 01, APIC ID 0, APIC INT 01 > Int: type 0, pol 0, trig 0, bus 01, IRQ 03, APIC ID 0, APIC INT 03 > Int: type 0, pol 0, trig 0, bus 01, IRQ 04, APIC ID 0, APIC INT 04 > Int: type 0, pol 0, trig 0, bus 01, IRQ 06, APIC ID 0, APIC INT 06 > Int: type 0, pol 0, trig 0, bus 01, IRQ 07, APIC ID 0, APIC INT 07 > Int: type 0, pol 0, trig 0, bus 01, IRQ 08, APIC ID 0, APIC INT 08 > Int: type 0, pol 0, trig 0, bus 01, IRQ 0c, APIC ID 0, APIC INT 0c > Int: type 0, pol 0, trig 0, bus 01, IRQ 0d, APIC ID 0, APIC INT 0d > Int: type 0, pol 0, trig 0, bus 01, IRQ 0e, APIC ID 0, APIC INT 0e > Int: type 0, pol 0, trig 0, bus 01, IRQ 0f, APIC ID 0, APIC INT 0f > Lint: type 3, pol 0, trig 0, bus 01, IRQ 00, APIC ID 0, APIC LINT 00 > Lint: type 1, pol 0, trig 0, bus 01, IRQ 00, APIC ID ff, APIC LINT 01 > Processors: 12 > smpboot: Allowing 12 CPUs, 0 hotplug CPUs > mapped IOAPIC to ffffffffff5fc000 (fec00000) > e820: [mem 0xc0000000-0xfeffbfff] available for PCI devices > clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns > setup_percpu: NR_CPUS:16 nr_cpumask_bits:16 nr_cpu_ids:12 nr_node_ids:1 > PERCPU: Embedded 31 pages/cpu @ffff8800bfa00000 s87640 r8192 d31144 u131072 > pcpu-alloc: s87640 r8192 d31144 u131072 alloc=1*2097152 > pcpu-alloc: [0] 00 01 02 03 04 05 06 07 08 09 10 11 -- -- -- -- > Built 1 zonelists in Zone order, mobility grouping on. Total pages: 774021 > Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic console=ttyS0,115200 console=tty0 earlyprintk=ttyS0 ignore_loglevel ftrace_dump_on_oops vga=normal root=/dev/vda1 rw > sysrq: sysrq always enabled. > log_buf_len individual max cpu contribution: 2097152 bytes > log_buf_len total cpu_extra contributions: 23068672 bytes > log_buf_len min size: 8388608 bytes > log_buf_len: 33554432 bytes > early log buf free: 8380096(99%) > PID hash table entries: 4096 (order: 3, 32768 bytes) > Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) > Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) > Memory: 2911172K/3145320K available (4237K kernel code, 721K rwdata, 1988K rodata, 936K init, 8608K bss, 234148K reserved, 0K cma-reserved) > SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=12, Nodes=1 > Hierarchical RCU implementation. > Build-time adjustment of leaf fanout to 64. > RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=12. > RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=12 > NR_IRQS:4352 nr_irqs:136 16 > Console: colour VGA+ 80x25 > console [tty0] enabled > bootconsole [earlyser0] disabled > Initializing cgroup subsys cpu > Linux version 4.3.0-rc5-mm1-diet-meta+ (barrios@...x) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04) ) #1545 SMP Tue Oct 20 08:55:45 KST 2015 > Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic console=ttyS0,115200 console=tty0 earlyprintk=ttyS0 ignore_loglevel ftrace_dump_on_oops vga=normal root=/dev/vda1 rw > KERNEL supported cpus: > Intel GenuineIntel > x86/fpu: Legacy x87 FPU detected. > x86/fpu: Using 'lazy' FPU context switches. > e820: BIOS-provided physical RAM map: > BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable > BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved > BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved > BIOS-e820: [mem 0x0000000000100000-0x00000000bfffbfff] usable > BIOS-e820: [mem 0x00000000bfffc000-0x00000000bfffffff] reserved > BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved > BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved > bootconsole [earlyser0] enabled > debug: ignoring loglevel setting. > NX (Execute Disable) protection: active > SMBIOS 2.4 present. > DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > e820: update [mem 0x00000000-0x00000fff] usable ==> reserved > e820: remove [mem 0x000a0000-0x000fffff] usable > e820: last_pfn = 0xbfffc max_arch_pfn = 0x400000000 > MTRR default type: write-back > MTRR fixed ranges enabled: > 00000-9FFFF write-back > A0000-BFFFF uncachable > C0000-FFFFF write-protect > MTRR variable ranges enabled: > 0 base 00C0000000 mask FFC0000000 uncachable > 1 disabled > 2 disabled > 3 disabled > 4 disabled > 5 disabled > 6 disabled > 7 disabled > x86/PAT: PAT not supported by CPU. > Scan for SMP in [mem 0x00000000-0x000003ff] > Scan for SMP in [mem 0x0009fc00-0x0009ffff] > Scan for SMP in [mem 0x000f0000-0x000fffff] > found SMP MP-table at [mem 0x000f0a70-0x000f0a7f] mapped at [ffff8800000f0a70] > mpc: f0a80-f0c44 > Scanning 1 areas for low memory corruption > Base memory trampoline at [ffff880000099000] 99000 size 24576 > init_memory_mapping: [mem 0x00000000-0x000fffff] > [mem 0x00000000-0x000fffff] page 4k > BRK [0x0220e000, 0x0220efff] PGTABLE > BRK [0x0220f000, 0x0220ffff] PGTABLE > BRK [0x02210000, 0x02210fff] PGTABLE > init_memory_mapping: [mem 0xbfc00000-0xbfdfffff] > [mem 0xbfc00000-0xbfdfffff] page 2M > BRK [0x02211000, 0x02211fff] PGTABLE > init_memory_mapping: [mem 0xa0000000-0xbfbfffff] > [mem 0xa0000000-0xbfbfffff] page 2M > init_memory_mapping: [mem 0x80000000-0x9fffffff] > [mem 0x80000000-0x9fffffff] page 2M > init_memory_mapping: [mem 0x00100000-0x7fffffff] > [mem 0x00100000-0x001fffff] page 4k > [mem 0x00200000-0x7fffffff] page 2M > init_memory_mapping: [mem 0xbfe00000-0xbfffbfff] > [mem 0xbfe00000-0xbfffbfff] page 4k > BRK [0x02212000, 0x02212fff] PGTABLE > RAMDISK: [mem 0x7851a000-0x7fffffff] > [ffffea0000000000-ffffea0002ffffff] PMD -> [ffff8800bc400000-ffff8800bf3fffff] on node 0 > Zone ranges: > DMA [mem 0x0000000000001000-0x0000000000ffffff] > DMA32 [mem 0x0000000001000000-0x00000000bfffbfff] > Normal empty > Movable zone start for each node > Early memory node ranges > node 0: [mem 0x0000000000001000-0x000000000009efff] > node 0: [mem 0x0000000000100000-0x00000000bfffbfff] > Initmem setup node 0 [mem 0x0000000000001000-0x00000000bfffbfff] > On node 0 totalpages: 786330 > DMA zone: 64 pages used for memmap > DMA zone: 21 pages reserved > DMA zone: 3998 pages, LIFO batch:0 > DMA32 zone: 12224 pages used for memmap > DMA32 zone: 782332 pages, LIFO batch:31 > Intel MultiProcessor Specification v1.4 > mpc: f0a80-f0c44 > MPTABLE: OEM ID: BOCHSCPU > MPTABLE: Product ID: 0.1 > MPTABLE: APIC at: 0xFEE00000 > mapped APIC to ffffffffff5fd000 ( fee00000) > Processor #0 (Bootup-CPU) > Processor #1 > Processor #2 > Processor #3 > Processor #4 > Processor #5 > Processor #6 > Processor #7 > Processor #8 > Processor #9 > Processor #10 > Processor #11 > Bus #0 is PCI > Bus #1 is ISA > IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 > Int: type 0, pol 1, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 09 > Int: type 0, pol 1, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0b > Int: type 0, pol 1, trig 0, bus 00, IRQ 10, APIC ID 0, APIC INT 0b > Int: type 0, pol 1, trig 0, bus 00, IRQ 14, APIC ID 0, APIC INT 0a > Int: type 0, pol 1, trig 0, bus 00, IRQ 18, APIC ID 0, APIC INT 0a > Int: type 0, pol 0, trig 0, bus 01, IRQ 00, APIC ID 0, APIC INT 02 > Int: type 0, pol 0, trig 0, bus 01, IRQ 01, APIC ID 0, APIC INT 01 > Int: type 0, pol 0, trig 0, bus 01, IRQ 03, APIC ID 0, APIC INT 03 > Int: type 0, pol 0, trig 0, bus 01, IRQ 04, APIC ID 0, APIC INT 04 > Int: type 0, pol 0, trig 0, bus 01, IRQ 06, APIC ID 0, APIC INT 06 > Int: type 0, pol 0, trig 0, bus 01, IRQ 07, APIC ID 0, APIC INT 07 > Int: type 0, pol 0, trig 0, bus 01, IRQ 08, APIC ID 0, APIC INT 08 > Int: type 0, pol 0, trig 0, bus 01, IRQ 0c, APIC ID 0, APIC INT 0c > Int: type 0, pol 0, trig 0, bus 01, IRQ 0d, APIC ID 0, APIC INT 0d > Int: type 0, pol 0, trig 0, bus 01, IRQ 0e, APIC ID 0, APIC INT 0e > Int: type 0, pol 0, trig 0, bus 01, IRQ 0f, APIC ID 0, APIC INT 0f > Lint: type 3, pol 0, trig 0, bus 01, IRQ 00, APIC ID 0, APIC LINT 00 > Lint: type 1, pol 0, trig 0, bus 01, IRQ 00, APIC ID ff, APIC LINT 01 > Processors: 12 > smpboot: Allowing 12 CPUs, 0 hotplug CPUs > mapped IOAPIC to ffffffffff5fc000 (fec00000) > e820: [mem 0xc0000000-0xfeffbfff] available for PCI devices > clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns > setup_percpu: NR_CPUS:16 nr_cpumask_bits:16 nr_cpu_ids:12 nr_node_ids:1 > PERCPU: Embedded 31 pages/cpu @ffff8800bfa00000 s87640 r8192 d31144 u131072 > pcpu-alloc: s87640 r8192 d31144 u131072 alloc=1*2097152 > pcpu-alloc: [0] 00 01 02 03 04 05 06 07 08 09 10 11 -- -- -- -- > Built 1 zonelists in Zone order, mobility grouping on. Total pages: 774021 > Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic console=ttyS0,115200 console=tty0 earlyprintk=ttyS0 ignore_loglevel ftrace_dump_on_oops vga=normal root=/dev/vda1 rw > sysrq: sysrq always enabled. > log_buf_len individual max cpu contribution: 2097152 bytes > log_buf_len total cpu_extra contributions: 23068672 bytes > log_buf_len min size: 8388608 bytes > log_buf_len: 33554432 bytes > early log buf free: 8380096(99%) > PID hash table entries: 4096 (order: 3, 32768 bytes) > Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) > Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) > Memory: 2911172K/3145320K available (4237K kernel code, 721K rwdata, 1988K rodata, 936K init, 8608K bss, 234148K reserved, 0K cma-reserved) > SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=12, Nodes=1 > Hierarchical RCU implementation. > Build-time adjustment of leaf fanout to 64. > RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=12. > RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=12 > NR_IRQS:4352 nr_irqs:136 16 > Console: colour VGA+ 80x25 > console [tty0] enabled > bootconsole [earlyser0] disabled > console [ttyS0] enabled > tsc: Fast TSC calibration using PIT > tsc: Detected 3199.926 MHz processor > Calibrating delay loop (skipped), value calculated using timer frequency.. 6399.85 BogoMIPS (lpj=12799704) > pid_max: default: 32768 minimum: 301 > Mount-cache hash table entries: 8192 (order: 4, 65536 bytes) > Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes) > Initializing cgroup subsys memory > Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 > Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 > Freeing SMP alternatives memory: 20K (ffffffff819a0000 - ffffffff819a5000) > ftrace: allocating 16664 entries in 66 pages > Switched APIC routing to physical flat. > enabled ExtINT on CPU#0 > ENABLING IO-APIC IRQs > init IO_APIC IRQs > apic 0 pin 0 not connected > IOAPIC[0]: Set routing entry (0-1 -> 0x31 -> IRQ 1 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-3 -> 0x33 -> IRQ 3 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-4 -> 0x34 -> IRQ 4 Mode:0 Active:0 Dest:0) > apic 0 pin 5 not connected > IOAPIC[0]: Set routing entry (0-6 -> 0x36 -> IRQ 6 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-7 -> 0x37 -> IRQ 7 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-9 -> 0x39 -> IRQ 9 Mode:1 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-10 -> 0x3a -> IRQ 10 Mode:1 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-11 -> 0x3b -> IRQ 11 Mode:1 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-12 -> 0x3c -> IRQ 12 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-13 -> 0x3d -> IRQ 13 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-14 -> 0x3e -> IRQ 14 Mode:0 Active:0 Dest:0) > IOAPIC[0]: Set routing entry (0-15 -> 0x3f -> IRQ 15 Mode:0 Active:0 Dest:0) > apic 0 pin 16 not connected > apic 0 pin 17 not connected > apic 0 pin 18 not connected > apic 0 pin 19 not connected > apic 0 pin 20 not connected > apic 0 pin 21 not connected > apic 0 pin 22 not connected > apic 0 pin 23 not connected > ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > Using local APIC timer interrupts. > calibrating APIC timer ... > ... lapic delta = 6251755 > ..... delta 6251755 > ..... mult: 268510832 > ..... calibration result: 4001123 > ..... CPU clock speed is 3200.3592 MHz. > ..... host bus clock speed is 1000.1123 MHz. > ... verify APIC timer > ... jiffies delta = 25 > ... jiffies result ok > smpboot: CPU0: Intel QEMU Virtual CPU version 2.0.0 (family: 0x6, model: 0x6, stepping: 0x3) > Performance Events: Broken PMU hardware detected, using software events only. > Failed to access perfctr msr (MSR c2 is 0) > x86: Booting SMP configuration: > .... node #0, CPUs: #1 > masked ExtINT on CPU#1 > #2 > masked ExtINT on CPU#2 > #3 > masked ExtINT on CPU#3 > #4 > masked ExtINT on CPU#4 > #5 > masked ExtINT on CPU#5 > #6 > masked ExtINT on CPU#6 > #7 > masked ExtINT on CPU#7 > #8 > masked ExtINT on CPU#8 > #9 > masked ExtINT on CPU#9 > #10 > masked ExtINT on CPU#10 > #11 > masked ExtINT on CPU#11 > x86: Booted up 1 node, 12 CPUs > smpboot: Total of 12 processors activated (76818.13 BogoMIPS) > devtmpfs: initialized > clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns > NET: Registered protocol family 16 > PCI: Using configuration type 1 for base access > vgaarb: loaded > SCSI subsystem initialized > libata version 3.00 loaded. > PCI: Probing PCI hardware > PCI: root bus 00: using default resources > PCI: Probing PCI hardware (bus 00) > PCI host bridge to bus 0000:00 > pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffff] > pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff] > pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > pci 0000:00:01.0: [8086:7000] type 00 class 0x060100 > pci 0000:00:01.1: [8086:7010] type 00 class 0x010180 > pci 0000:00:01.1: reg 0x20: [io 0xc0c0-0xc0cf] > pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] > pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] > pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] > pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] > pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 > pci 0000:00:02.0: [1013:00b8] type 00 class 0x030000 > pci 0000:00:02.0: reg 0x10: [mem 0xfc000000-0xfdffffff pref] > pci 0000:00:02.0: reg 0x14: [mem 0xfebd0000-0xfebd0fff] > pci 0000:00:02.0: reg 0x30: [mem 0xfebc0000-0xfebcffff pref] > vgaarb: setting as boot device: PCI:0000:00:02.0 > vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none > pci 0000:00:03.0: [1af4:1000] type 00 class 0x020000 > pci 0000:00:03.0: reg 0x10: [io 0xc080-0xc09f] > pci 0000:00:03.0: reg 0x14: [mem 0xfebd1000-0xfebd1fff] > pci 0000:00:03.0: reg 0x30: [mem 0xfeb80000-0xfebbffff pref] > pci 0000:00:04.0: [1af4:1002] type 00 class 0x00ff00 > pci 0000:00:04.0: reg 0x10: [io 0xc0a0-0xc0bf] > pci 0000:00:05.0: [1af4:1001] type 00 class 0x010000 > pci 0000:00:05.0: reg 0x10: [io 0xc000-0xc03f] > pci 0000:00:05.0: reg 0x14: [mem 0xfebd2000-0xfebd2fff] > pci 0000:00:06.0: [1af4:1001] type 00 class 0x010000 > pci 0000:00:06.0: reg 0x10: [io 0xc040-0xc07f] > pci 0000:00:06.0: reg 0x14: [mem 0xfebd3000-0xfebd3fff] > pci 0000:00:07.0: [8086:25ab] type 00 class 0x088000 > pci 0000:00:07.0: reg 0x10: [mem 0xfebd4000-0xfebd400f] > pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00 > pci 0000:00:01.0: PIIX/ICH IRQ router [8086:7000] > PCI: pci_cache_line_size set to 64 bytes > e820: reserve RAM buffer [mem 0x0009fc00-0x0009ffff] > e820: reserve RAM buffer [mem 0xbfffc000-0xbfffffff] > clocksource: Switched to clocksource refined-jiffies > pci_bus 0000:00: resource 4 [io 0x0000-0xffff] > pci_bus 0000:00: resource 5 [mem 0x00000000-0xffffffffff] > NET: Registered protocol family 2 > TCP established hash table entries: 32768 (order: 6, 262144 bytes) > TCP bind hash table entries: 32768 (order: 7, 524288 bytes) > TCP: Hash tables configured (established 32768 bind 32768) > UDP hash table entries: 2048 (order: 4, 65536 bytes) > UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes) > NET: Registered protocol family 1 > Trying to unpack rootfs image as initramfs... > Freeing initrd memory: 125848K (ffff88007851a000 - ffff880080000000) > platform rtc_cmos: registered platform RTC device (no PNP device found) > Scanning for low memory corruption every 60 seconds > futex hash table entries: 4096 (order: 6, 262144 bytes) > HugeTLB registered 2 MB page size, pre-allocated 0 pages > fuse init (API version 7.23) > 9p: Installing v9fs 9p2000 file system support > cryptomgr_test (74) used greatest stack depth: 15352 bytes left > cryptomgr_test (82) used greatest stack depth: 15136 bytes left > Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251) > io scheduler noop registered > io scheduler deadline registered > io scheduler cfq registered (default) > querying PCI -> IRQ mapping bus:0, slot:3, pin:0. > virtio-pci 0000:00:03.0: PCI->APIC IRQ transform: INT A -> IRQ 11 > virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver > querying PCI -> IRQ mapping bus:0, slot:4, pin:0. > virtio-pci 0000:00:04.0: PCI->APIC IRQ transform: INT A -> IRQ 11 > virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver > querying PCI -> IRQ mapping bus:0, slot:5, pin:0. > virtio-pci 0000:00:05.0: PCI->APIC IRQ transform: INT A -> IRQ 10 > virtio-pci 0000:00:05.0: virtio_pci: leaving for legacy driver > querying PCI -> IRQ mapping bus:0, slot:6, pin:0. > virtio-pci 0000:00:06.0: PCI->APIC IRQ transform: INT A -> IRQ 10 > virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver > Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled > serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > Linux agpgart interface v0.103 > brd: module loaded > loop: module loaded > vda: vda1 vda2 < vda5 > > zram: Added device: zram0 > libphy: Fixed MDIO Bus: probed > tun: Universal TUN/TAP device driver, 1.6 > tun: (C) 1999-2004 Max Krasnyansky <maxk@...lcomm.com> > serio: i8042 KBD port at 0x60,0x64 irq 1 > serio: i8042 AUX port at 0x60,0x64 irq 12 > mousedev: PS/2 mouse device common for all mice > rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 > rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram > device-mapper: ioctl: 4.33.0-ioctl (2015-8-18) initialised: dm-devel@...hat.com > device-mapper: cache cleaner: version 1.0.0 loaded > NET: Registered protocol family 17 > 9pnet: Installing 9P2000 support > ... APIC ID: 00000000 (0) > ... APIC VERSION: 01050014 > 0000000000000000000000000000000000000000000000000000000000000000 > 000000000e000000000000000000000000000000000000000000000000000000 > 0000000000020000000000000000000000000000000000000000000000008000 > > number of MP IRQ sources: 16. > number of IO-APIC #0 registers: 24. > testing the IO APIC....................... > IO APIC #0...... > .... register #00: 00000000 > ....... : physical APIC id: 00 > ....... : Delivery Type: 0 > ....... : LTS : 0 > .... register #01: 00170011 > ....... : max redirection entries: 17 > ....... : PRQ implemented: 0 > ....... : IO APIC version: 11 > .... register #02: 00000000 > ....... : arbitration: 00 > .... IRQ redirection table: > IOAPIC 0: > pin00, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin01, enabled , edge , high, V(31), IRR(0), S(0), physical, D(00), M(0) > pin02, enabled , edge , high, V(30), IRR(0), S(0), physical, D(00), M(0) > pin03, enabled , edge , high, V(33), IRR(0), S(0), physical, D(00), M(0) > pin04, disabled, edge , high, V(34), IRR(0), S(0), physical, D(00), M(0) > pin05, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin06, enabled , edge , high, V(36), IRR(0), S(0), physical, D(00), M(0) > pin07, enabled , edge , high, V(37), IRR(0), S(0), physical, D(00), M(0) > pin08, enabled , edge , high, V(38), IRR(0), S(0), physical, D(00), M(0) > pin09, disabled, level, high, V(39), IRR(0), S(0), physical, D(00), M(0) > pin0a, enabled , level, high, V(3A), IRR(0), S(0), physical, D(00), M(0) > pin0b, enabled , level, high, V(3B), IRR(0), S(0), physical, D(00), M(0) > pin0c, enabled , edge , high, V(3C), IRR(0), S(0), physical, D(00), M(0) > pin0d, enabled , edge , high, V(3D), IRR(0), S(0), physical, D(00), M(0) > pin0e, enabled , edge , high, V(3E), IRR(0), S(0), physical, D(00), M(0) > pin0f, enabled , edge , high, V(3F), IRR(0), S(0), physical, D(00), M(0) > pin10, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin11, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin12, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin13, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin14, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin15, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin16, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > pin17, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) > IRQ to pin mappings: > IRQ0 -> 0:2 > IRQ1 -> 0:1 > IRQ3 -> 0:3 > IRQ4 -> 0:4 > IRQ6 -> 0:6 > IRQ7 -> 0:7 > IRQ8 -> 0:8 > IRQ9 -> 0:9 > IRQ10 -> 0:10 > IRQ11 -> 0:11 > IRQ12 -> 0:12 > IRQ13 -> 0:13 > IRQ14 -> 0:14 > IRQ15 -> 0:15 > .................................... done. > rtc_cmos rtc_cmos: setting system clock to 2015-10-20 08:57:55 UTC (1445331475) > input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0 > Freeing unused kernel memory: 936K (ffffffff818b6000 - ffffffff819a0000) > Write protecting the kernel read-only data: 8192k > Freeing unused kernel memory: 1900K (ffff880001425000 - ffff880001600000) > Freeing unused kernel memory: 60K (ffff8800017f1000 - ffff880001800000) > busybox (117) used greatest stack depth: 14480 bytes left > exe (124) used greatest stack depth: 14024 bytes left > udevd[140]: starting version 175 > blkid (151) used greatest stack depth: 13920 bytes left > modprobe (242) used greatest stack depth: 13784 bytes left > clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2e200418439, max_idle_ns: 440795220848 ns > clocksource: Switched to clocksource tsc > EXT4-fs (vda1): recovery complete > EXT4-fs (vda1): mounted filesystem with ordered data mode. Opts: (null) > exe (262) used greatest stack depth: 13032 bytes left > random: init urandom read with 9 bits of entropy available > init: plymouth-upstart-bridge main process (279) terminated with status 1 > init: plymouth-upstart-bridge main process ended, respawning > init: plymouth-upstart-bridge main process (289) terminated with status 1 > init: plymouth-upstart-bridge main process ended, respawning > init: plymouth-upstart-bridge main process (293) terminated with status 1 > init: plymouth-upstart-bridge main process ended, respawning > init: ureadahead main process (282) terminated with status 5 > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > systemd-udevd[423]: starting version 204 > EXT4-fs (vdb): mounted filesystem with ordered data mode. Opts: errors=remount-ro > * Stopping Send an event to indicate plymouth is up.[74G[ OK ] > * Starting Mount filesystems on boot.[74G[ OK ] > * Starting Signal sysvinit that the rootfs is mounted.[74G[ OK ] > * Starting Populate /dev filesystem.[74G[ OK ] > * Starting Populate and link to /run filesystem.[74G[ OK ] > * Stopping Populate /dev filesystem.[74G[ OK ] > * Stopping Populate and link to /run filesystem.[74G[ OK ] > * Starting Clean /tmp directory.[74G[ OK ] > * Stopping Track if upstart is running in a container.[74G[ OK ] > * Stopping Clean /tmp directory.[74G[ OK ] > * Starting Initialize or finalize resolvconf.[74G[ OK ] > * Starting set console keymap.[74G[ OK ] > * Starting Signal sysvinit that virtual filesystems are mounted.[74G[ OK ] > * Starting Signal sysvinit that virtual filesystems are mounted.[74G[ OK ] > * Starting Bridge udev events into upstart.[74G[ OK ] > * Starting Signal sysvinit that remote filesystems are mounted.[74G[ OK ] > * Stopping set console keymap.[74G[ OK ] > * Starting device node and kernel event manager.[74G[ OK ] > * Starting load modules from /etc/modules.[74G[ OK ] > * Starting cold plug devices.[74G[ OK ] > * Starting log initial device creation.[74G[ OK ] > * Stopping Read required files in advance (for other mountpoints).[74G[ OK ] > * Stopping load modules from /etc/modules.[74G[ OK ] > * Starting Signal sysvinit that local filesystems are mounted.[74G[ OK ] > * Starting flush early job output to logs.[74G[ OK ] > * Stopping Mount filesystems on boot.[74G[ OK ] > * Stopping flush early job output to logs.[74G[ OK ] > * Starting D-Bus system message bus.[74G[ OK ] > * Starting SystemD login management service.[74G[ OK ] > * Starting system logging daemon.[74G[ OK ] > * Stopping cold plug devices.[74G[ OK ] > * Starting Uncomplicated firewall.[74G[ OK ] > * Starting configure network device security.[74G[ OK ] > * Stopping log initial device creation.[74G[ OK ] > * Starting configure network device security.[74G[ OK ] > * Starting save udev log and update rules.[74G[ OK ] > * Starting set console font.[74G[ OK ] > * Stopping save udev log and update rules.[74G[ OK ] > * Starting Mount network filesystems.[74G[ OK ] > * Starting Failsafe Boot Delay.[74G[ OK ] > * Starting configure network device security.[74G[ OK ] > * Stopping Mount network filesystems.[74G[ OK ] > * Starting configure network device.[74G[ OK ] > * Starting configure network device.[74G[ OK ] > * Starting Bridge file events into upstart.[74G[ OK ] > * Starting Bridge socket events into upstart.[74G[ OK ] > * Stopping set console font.[74G[ OK ] > * Starting userspace bootsplash.[74G[ OK ] > * Starting Send an event to indicate plymouth is up.[74G[ OK ] > * Stopping userspace bootsplash.[74G[ OK ] > * Stopping Send an event to indicate plymouth is up.[74G[ OK ] > * Starting Mount network filesystems.[74G[ OK ] > init: failsafe main process (591) killed by TERM signal > * Stopping Failsafe Boot Delay.[74G[ OK ] > * Starting System V initialisation compatibility.[74G[ OK ] > * Stopping Mount network filesystems.[74G[ OK ] > * Starting configure virtual network devices.[74G[ OK ] > * Stopping System V initialisation compatibility.[74G[ OK ] > * Starting System V runlevel compatibility.[74G[ OK ] > * Starting deferred execution scheduler.[74G[ OK ] > * Starting regular background program processing daemon.[74G[ OK ] > * Starting ACPI daemon.[74G[ OK ] > * Starting save kernel messages.[74G[ OK ] > * Starting CPU interrupts balancing daemon.[74G[ OK ] > * Stopping save kernel messages.[74G[ OK ] > * Starting OpenSSH server.[74G[ OK ] > * Starting automatic crash report generation.[74G[ OK ] > * Restoring resolver state... .[80G .[74G[ OK ] > eth0 Link encap:Ethernet HWaddr 52:54:79:12:34:57 inet addr:192.168.0.21 Bcast:192.168.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:34 errors:0 dropped:24 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5780 (5.7 KB) TX bytes:800 (800.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) > * Stopping System V runlevel compatibility.[74G[ OK ] > init: plymouth-upstart-bridge main process ended, respawning > sh (1429) used greatest stack depth: 11752 bytes left > sh (1454) used greatest stack depth: 11528 bytes left > random: nonblocking pool is initialized > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > sh (2785) used greatest stack depth: 11480 bytes left > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > Adding 4191228k swap on /dev/vda5. Priority:-1 extents:1 across:4191228k FS > BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 > IP: [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > PGD 0 > Oops: 0000 [#1] SMP > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 1 PID: 26445 Comm: sh Not tainted 4.3.0-rc5-mm1-diet-meta+ #1545 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff8800b9af3480 ti: ffff88007fea0000 task.ti: ffff88007fea0000 > RIP: 0010:[<ffffffff810782a9>] [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP: 0018:ffff88007fea3648 EFLAGS: 00010202 > RAX: 0000000000000001 RBX: ffffea0002324900 RCX: ffff88007fea37e8 > RDX: 0000000000000000 RSI: ffff88007fea36e8 RDI: 0000000000000008 > RBP: ffff88007fea3648 R08: ffffffff818446a0 R09: ffff8800b9af4c80 > R10: 0000000000000216 R11: 0000000000000001 R12: ffff88007f58d6e1 > R13: ffff88007f58d6e0 R14: 0000000000000008 R15: 0000000000000001 > FS: 00007f0993e78740(0000) GS:ffff8800bfa20000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000008 CR3: 000000007edee000 CR4: 00000000000006a0 > Stack: > ffff88007fea3678 ffffffff81124ff0 ffffea0002324900 ffff88007fea36e8 > ffff88009ffe8400 0000000000000000 ffff88007fea36c0 ffffffff81125733 > ffff8800bfa34540 ffffffff8105dc9d ffffea0002324900 ffff88007fea37e8 > Call Trace: > [<ffffffff81124ff0>] page_lock_anon_vma_read+0x60/0x180 > [<ffffffff81125733>] rmap_walk+0x1b3/0x3f0 > [<ffffffff8105dc9d>] ? finish_task_switch+0x5d/0x1f0 > [<ffffffff81125b13>] page_referenced+0x1a3/0x220 > [<ffffffff81123e30>] ? __page_check_address+0x1a0/0x1a0 > [<ffffffff81124f90>] ? page_get_anon_vma+0xd0/0xd0 > [<ffffffff81123820>] ? anon_vma_ctor+0x40/0x40 > [<ffffffff8110087b>] shrink_page_list+0x5ab/0xde0 > [<ffffffff8110174c>] shrink_inactive_list+0x18c/0x4b0 > [<ffffffff811023bd>] shrink_lruvec+0x59d/0x740 > [<ffffffff811025f0>] shrink_zone+0x90/0x250 > [<ffffffff811028dd>] do_try_to_free_pages+0x12d/0x3b0 > [<ffffffff81102d3d>] try_to_free_mem_cgroup_pages+0x9d/0x120 > [<ffffffff811496c3>] try_charge+0x163/0x700 > [<ffffffff81149cb4>] mem_cgroup_do_precharge+0x54/0x70 > [<ffffffff81149e45>] mem_cgroup_can_attach+0x175/0x1b0 > [<ffffffff811b2c57>] ? kernfs_iattrs.isra.6+0x37/0xd0 > [<ffffffff81148e70>] ? get_mctgt_type+0x320/0x320 > [<ffffffff810a9d29>] cgroup_migrate+0x149/0x440 > [<ffffffff810aa60c>] cgroup_attach_task+0x7c/0xe0 > [<ffffffff810aa904>] __cgroup_procs_write.isra.33+0x1d4/0x2b0 > [<ffffffff810aaa10>] cgroup_tasks_write+0x10/0x20 > [<ffffffff810a6238>] cgroup_file_write+0x38/0xf0 > [<ffffffff811b54ad>] kernfs_fop_write+0x11d/0x170 > [<ffffffff81153918>] __vfs_write+0x28/0xe0 > [<ffffffff8116e614>] ? __fd_install+0x24/0xc0 > [<ffffffff810784a1>] ? percpu_down_read+0x21/0x50 > [<ffffffff81153e91>] vfs_write+0xa1/0x170 > [<ffffffff81154716>] SyS_write+0x46/0xa0 > [<ffffffff81420a17>] entry_SYSCALL_64_fastpath+0x12/0x6a > Code: 5e 82 3a 00 48 83 c4 08 5b 5d c3 48 89 45 f0 e8 9b 6a 3a 00 48 8b 45 f0 eb df 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 <48> 8b 07 48 89 c2 48 83 c2 01 7e 07 f0 48 0f b1 17 75 f0 48 f7 > RIP [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP <ffff88007fea3648> > CR2: 0000000000000008 > BUG: unable to handle kernel ---[ end trace e81a82c8122b447d ]--- > Kernel panic - not syncing: Fatal exception > > NULL pointer dereference at 0000000000000008 > IP: [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > PGD 0 > Oops: 0000 [#2] SMP > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 10 PID: 59 Comm: khugepaged Tainted: G D 4.3.0-rc5-mm1-diet-meta+ #1545 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff8800b9851a40 ti: ffff8800b985c000 task.ti: ffff8800b985c000 > RIP: 0010:[<ffffffff810782a9>] [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP: 0018:ffff8800b985f778 EFLAGS: 00010202 > RAX: 0000000000000001 RBX: ffffea0002321800 RCX: ffff8800b985f918 > RDX: 0000000000000000 RSI: ffff8800b985f818 RDI: 0000000000000008 > RBP: ffff8800b985f778 R08: ffffffff818446a0 R09: ffff8800b9853240 > R10: 000000000000ba03 R11: 0000000000000001 R12: ffff88007f58d6e1 > R13: ffff88007f58d6e0 R14: 0000000000000008 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff8800bfb40000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000008 CR3: 0000000001808000 CR4: 00000000000006a0 > Stack: > ffff8800b985f7a8 ffffffff81124ff0 ffffea0002321800 ffff8800b985f818 > ffff88009ffe8400 0000000000000000 ffff8800b985f7f0 ffffffff81125733 > ffff8800bfb54540 ffffffff8105dc9d ffffea0002321800 ffff8800b985f918 > Call Trace: > [<ffffffff81124ff0>] page_lock_anon_vma_read+0x60/0x180 > [<ffffffff81125733>] rmap_walk+0x1b3/0x3f0 > [<ffffffff8105dc9d>] ? finish_task_switch+0x5d/0x1f0 > [<ffffffff81125b13>] page_referenced+0x1a3/0x220 > [<ffffffff81123e30>] ? __page_check_address+0x1a0/0x1a0 > [<ffffffff81124f90>] ? page_get_anon_vma+0xd0/0xd0 > [<ffffffff81123820>] ? anon_vma_ctor+0x40/0x40 > [<ffffffff8110087b>] shrink_page_list+0x5ab/0xde0 > [<ffffffff8110174c>] shrink_inactive_list+0x18c/0x4b0 > [<ffffffff811023bd>] shrink_lruvec+0x59d/0x740 > [<ffffffff811025f0>] shrink_zone+0x90/0x250 > [<ffffffff811028dd>] do_try_to_free_pages+0x12d/0x3b0 > [<ffffffff81102d3d>] try_to_free_mem_cgroup_pages+0x9d/0x120 > [<ffffffff811496c3>] try_charge+0x163/0x700 > [<ffffffff8141d1f3>] ? schedule+0x33/0x80 > [<ffffffff8114d45f>] mem_cgroup_try_charge+0x9f/0x1d0 > [<ffffffff811434bc>] khugepaged+0x7cc/0x1ac0 > [<ffffffff81066e01>] ? hrtick_update+0x1/0x70 > [<ffffffff81072430>] ? prepare_to_wait_event+0xf0/0xf0 > [<ffffffff81142cf0>] ? total_mapcount+0x70/0x70 > [<ffffffff81056cd9>] kthread+0xc9/0xe0 > [<ffffffff81056c10>] ? kthread_park+0x60/0x60 > [<ffffffff81420d6f>] ret_from_fork+0x3f/0x70 > [<ffffffff81056c10>] ? kthread_park+0x60/0x60 > Code: 5e 82 3a 00 48 83 c4 08 5b 5d c3 48 89 45 f0 e8 9b 6a 3a 00 48 8b 45 f0 eb df 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 <48> 8b 07 48 89 c2 48 83 c2 01 7e 07 f0 48 0f b1 17 75 f0 48 f7 > RIP [<ffffffff810782a9>] down_read_trylock+0x9/0x30 > RSP <ffff8800b985f778> > CR2: 0000000000000008 > ---[ end trace e81a82c8122b447e ]--- > Shutting down cpus with NMI > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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