Re: x86: warning: kernel stack regs has bad 'bp' value

[Andrey Konovalov <andreyknvl@xxxxxxxxxx>]

On Wed, May 3, 2017 at 2:48 PM, Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote:
> Hi,
>
> I've got the following error report while fuzzing the kernel with syzkaller.
>
> On commit 89c9fea3c8034cdb2fd745f551cde0b507fd6893 (4.11.0+).
>
> A reproducer and .config are attached.
>
> The reproducer open SCTP sockets and sends data to it in a loop.
> I'm not sure whether this is an issue with SCTP or with something else.

It seems that I get a bunch of these warning all over the place.

Attached another reproducer related to IPv6 UDP.

>
> WARNING: kernel stack regs at ffff8800686869f8 in a.out:4933 has bad
> 'bp' value c3fc855a10167ec0
> unwind stack type:0 next_sp:          (null) mask:0x6 graph_idx:0
> ffff88006ca06fa8: ffff88006ca07030 (0xffff88006ca07030)
> ffff88006ca06fb0: ffffffff8120e50e (__save_stack_trace+0x6e/0xd0)
> ffff88006ca06fb8: 0000000000000000 ...
> ffff88006ca06fc0: ffff880068680000 (0xffff880068680000)
> ffff88006ca06fc8: ffff880068688000 (0xffff880068688000)
> ffff88006ca06fd0: 0000000000000000 ...
> ffff88006ca06fd8: 0000000000000006 (0x6)
> ffff88006ca06fe0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca06fe8: 0000010100000000 (0x10100000000)
> ffff88006ca06ff0: 0000000000000000 ...
> ffff88006ca06ff8: ffff88006ca06fa8 (0xffff88006ca06fa8)
> ffff88006ca07000: ffff8800686869f8 (0xffff8800686869f8)
> ffff88006ca07008: ffffffff84d876ac (csum_partial_copy_generic+0x6c/0x170)
> ffff88006ca07010: 0000000001000000 (0x1000000)
> ffff88006ca07018: ffff880066031c00 (0xffff880066031c00)
> ffff88006ca07020: ffff880066031db8 (0xffff880066031db8)
> ffff88006ca07028: ffffffff8189df1d (file_free_rcu+0x6d/0xa0)
> ffff88006ca07030: ffff88006ca07040 (0xffff88006ca07040)
> ffff88006ca07038: ffffffff8120e586 (save_stack_trace+0x16/0x20)
> ffff88006ca07040: ffff88006ca07270 (0xffff88006ca07270)
> ffff88006ca07048: ffffffff8187aac3 (save_stack+0x43/0xd0)
> ffff88006ca07050: 000000400000000c (0x400000000c)
> ffff88006ca07058: ffff88006ca07068 (0xffff88006ca07068)
> ffff88006ca07060: ffffffff00000000 (0xffffffff00000000)
> ffff88006ca07068: ffffffff8120e586 (save_stack_trace+0x16/0x20)
> ffff88006ca07070: ffffffff8187aac3 (save_stack+0x43/0xd0)
> ffff88006ca07078: ffffffff8187b3d3 (kasan_slab_free+0x73/0xc0)
> ffff88006ca07080: ffffffff81877052 (kmem_cache_free+0xb2/0x2c0)
> ffff88006ca07088: ffffffff8189df1d (file_free_rcu+0x6d/0xa0)
> ffff88006ca07090: ffffffff81495eeb (rcu_do_batch.isra.62+0x95b/0xc60)
> ffff88006ca07098: ffffffff81497afc (rcu_process_callbacks+0x2cc/0xb50)
> ffff88006ca070a0: ffffffff84dab1bb (__do_softirq+0x2fb/0xb99)
> ffff88006ca070a8: ffffffff812e10be (irq_exit+0x19e/0x1d0)
> ffff88006ca070b0: ffffffff84da97a6 (smp_apic_timer_interrupt+0x76/0xa0)
> ffff88006ca070b8: ffffffff84da4f73 (apic_timer_interrupt+0x93/0xa0)
> ffff88006ca070c0: ffffffff84d876ac (csum_partial_copy_generic+0x6c/0x170)
> ffff88006ca070c8: 0000000000000003 (0x3)
> ffff88006ca070d0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca070d8: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca070e0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca070e8: ffff88006ca07130 (0xffff88006ca07130)
> ffff88006ca070f0: ffffffff8141f8ef (mark_held_locks+0xaf/0x100)
> ffff88006ca070f8: ffff88006ca072b0 (0xffff88006ca072b0)
> ffff88006ca07100: ffff880000000002 (0xffff880000000002)
> ffff88006ca07108: 1ffff1000d940e28 (0x1ffff1000d940e28)
> ffff88006ca07110: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07118: ffffffff8187703d (kmem_cache_free+0x9d/0x2c0)
> ffff88006ca07120: 1ffff1000d940e44 (0x1ffff1000d940e44)
> ffff88006ca07128: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07130: ffff88006ca07288 (0xffff88006ca07288)
> ffff88006ca07138: ffffffff8141fc72 (trace_hardirqs_on_caller+0x332/0x6b0)
> ffff88006ca07140: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07148: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07150: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff88006ca07158: ffff880000000002 (0xffff880000000002)
> ffff88006ca07160: 1ffff1000d940e33 (0x1ffff1000d940e33)
> ffff88006ca07168: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07170: ffffffff81495f29 (rcu_do_batch.isra.62+0x999/0xc60)
> ffff88006ca07178: 1ffff1000d940e4f (0x1ffff1000d940e4f)
> ffff88006ca07180: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07188: ffff88006ca072e0 (0xffff88006ca072e0)
> ffff88006ca07190: ffffffff8141fc72 (trace_hardirqs_on_caller+0x332/0x6b0)
> ffff88006ca07198: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca071a0: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca071a8: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff88006ca071b0: 0000000000000a02 (0xa02)
> ffff88006ca071b8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca071c0: ffffffff856219a0 (__func__.52646+0x24bc00/0x2e8860)
> ffff88006ca071c8: ffffffff84da2b50 (_raw_spin_unlock_irq+0x40/0x40)
> ffff88006ca071d0: ffffffff814178e0 (lockdep_init_map+0x750/0x750)
> ffff88006ca071d8: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca071e0: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff88006ca071e8: 0000000000000001 (0x1)
> ffff88006ca071f0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca071f8: ffff88006ca07248 (0xffff88006ca07248)
> ffff88006ca07200: ffffffff81418846 (__lock_is_held+0xb6/0x140)
> ffff88006ca07208: ffffffff641d49e8 (0xffffffff641d49e8)
> ffff88006ca07210: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca07218: ffff88006ca242c0 (0xffff88006ca242c0)
> ffff88006ca07220: 1ffff1000d940e4e (0x1ffff1000d940e4e)
> ffff88006ca07228: ffffffff8590ce00 (rcu_bh_varname+0x60/0x60)
> ffff88006ca07230: ffff88006ca07350 (0xffff88006ca07350)
> ffff88006ca07238: ffff88006ca242dc (0xffff88006ca242dc)
> ffff88006ca07240: ffff88006ca07378 (0xffff88006ca07378)
> ffff88006ca07248: ffffffff8148b8ef (__note_gp_changes+0x14f/0xa80)
> ffff88006ca07250: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07258: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07260: ffff880066031c00 (0xffff880066031c00)
> ffff88006ca07268: ffff88006c564780 (0xffff88006c564780)
> ffff88006ca07270: ffff88006ca07298 (0xffff88006ca07298)
> ffff88006ca07278: ffffffff8187b3d3 (kasan_slab_free+0x73/0xc0)
> ffff88006ca07280: ffff880066031c00 (0xffff880066031c00)
> ffff88006ca07288: ffff88006c564780 (0xffff88006c564780)
> ffff88006ca07290: ffffea0001980c00 (0xffffea0001980c00)
> ffff88006ca07298: ffff88006ca072d0 (0xffff88006ca072d0)
> ffff88006ca072a0: ffffffff81877052 (kmem_cache_free+0xb2/0x2c0)
> ffff88006ca072a8: ffff880066bccc00 (0xffff880066bccc00)
> ffff88006ca072b0: ffff880066031c00 (0xffff880066031c00)
> ffff88006ca072b8: 0000000000000000 ...
> ffff88006ca072c0: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca072c8: ffff880066031c08 (0xffff880066031c08)
> ffff88006ca072d0: ffff88006ca072f0 (0xffff88006ca072f0)
> ffff88006ca072d8: ffffffff8189df1d (file_free_rcu+0x6d/0xa0)
> ffff88006ca072e0: ffff880066031c00 (0xffff880066031c00)
> ffff88006ca072e8: ffff88006b2ddf08 (0xffff88006b2ddf08)
> ffff88006ca072f0: ffff88006ca077f0 (0xffff88006ca077f0)
> ffff88006ca072f8: ffffffff81495eeb (rcu_do_batch.isra.62+0x95b/0xc60)
> ffff88006ca07300: ffff88006ca242c0 (0xffff88006ca242c0)
> ffff88006ca07308: ffff88006ca24380 (0xffff88006ca24380)
> ffff88006ca07310: ffff880067f71a18 (0xffff880067f71a18)
> ffff88006ca07318: ffffffff8590d4b8 (rcu_sched_state+0x6b8/0x760)
> ffff88006ca07320: ffff88006ca24318 (0xffff88006ca24318)
> ffff88006ca07328: 1ffff1000d940e6d (0x1ffff1000d940e6d)
> ffff88006ca07330: ffffed000c83a840 (0xffffed000c83a840)
> ffff88006ca07338: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07340: ffff88006ca24300 (0xffff88006ca24300)
> ffff88006ca07348: 0000000000000000 ...
> ffff88006ca07350: ffff88006ca242f8 (0xffff88006ca242f8)
> ffff88006ca07358: 000000000000000a (0xa)
> ffff88006ca07360: ffffffff8189deb0 (fput+0x140/0x140)
> ffff88006ca07368: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07370: ffffffff8562c700 (__func__.52646+0x256960/0x2e8860)
> ffff88006ca07378: ffffffff81495590 (rcu_note_context_switch+0x660/0x660)
> ffff88006ca07380: ffffffff81494588 (note_gp_changes+0x418/0x700)
> ffff88006ca07388: ffff8800641d4a10 (0xffff8800641d4a10)
> ffff88006ca07390: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07398: ffffed000c83a900 (0xffffed000c83a900)
> ffff88006ca073a0: 0000000000000a02 (0xa02)
> ffff88006ca073a8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca073b0: ffffffff8562c5d8 (__func__.52646+0x256838/0x2e8860)
> ffff88006ca073b8: ffffffff81494170 (rcu_idle_enter+0x240/0x240)
> ffff88006ca073c0: ffffffff8141e540 (print_usage_bug+0x440/0x440)
> ffff88006ca073c8: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca073d0: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff88006ca073d8: 1ffff1000d940e83 (0x1ffff1000d940e83)
> ffff88006ca073e0: ffff88006ca07538 (0xffff88006ca07538)
> ffff88006ca073e8: 1ffff1000d940e8e (0x1ffff1000d940e8e)
> ffff88006ca073f0: ffff88006ca07690 (0xffff88006ca07690)
> ffff88006ca073f8: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07400: 0000000000000002 (0x2)
> ffff88006ca07408: 1ffff1000d940e97 (0x1ffff1000d940e97)
> ffff88006ca07410: ffffffff862b3668 (lock_chains+0xc88/0x200020)
> ffff88006ca07418: ffffffff8590b0a0 (rcu_bh_lock_map+0x40/0x40)
> ffff88006ca07420: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07428: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff88006ca07430: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07438: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07440: ffffffff85629958 (__func__.52646+0x253bb8/0x2e8860)
> ffff88006ca07448: ffffffff8141e540 (print_usage_bug+0x440/0x440)
> ffff88006ca07450: 0000000000000002 (0x2)
> ffff88006ca07458: 0000000000000040 (0x40)
> ffff88006ca07460: ffff88006ca079b0 (0xffff88006ca079b0)
> ffff88006ca07468: 0000000000000806 (0x806)
> ffff88006ca07470: ffff88006ca07698 (0xffff88006ca07698)
> ffff88006ca07478: ffff88006ca076c0 (0xffff88006ca076c0)
> ffff88006ca07480: 0000000000000802 (0x802)
> ffff88006ca07488: ffff8800641d4280 (0xffff8800641d4280)
> ffff88006ca07490: 1ffff1000d940ea3 (0x1ffff1000d940ea3)
> ffff88006ca07498: ffff88006ca07738 (0xffff88006ca07738)
> ffff88006ca074a0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca074a8: 0000000000000000 ...
> ffff88006ca074b0: 1ffff1000d940eac (0x1ffff1000d940eac)
> ffff88006ca074b8: ffff8800641d4a10 (0xffff8800641d4a10)
> ffff88006ca074c0: ffff88006ca1b258 (0xffff88006ca1b258)
> ffff88006ca074c8: 000000000000165f (0x165f)
> ffff88006ca074d0: 0000000000000001 (0x1)
> ffff88006ca074d8: ffff88006ca07520 (0xffff88006ca07520)
> ffff88006ca074e0: ffffffff814185e6 (find_held_lock+0x36/0x1e0)
> ffff88006ca074e8: ffff880000000002 (0xffff880000000002)
> ffff88006ca074f0: ffff88006ca07580 (0xffff88006ca07580)
> ffff88006ca074f8: 1ffff1000d940eac (0x1ffff1000d940eac)
> ffff88006ca07500: ffffffff86ea6d40 (console_drivers+0x40/0x40)
> ffff88006ca07508: ffff88006ca1b258 (0xffff88006ca1b258)
> ffff88006ca07510: ffff88006ca07580 (0xffff88006ca07580)
> ffff88006ca07518: ffff88006ca07740 (0xffff88006ca07740)
> ffff88006ca07520: ffff88006ca07768 (0xffff88006ca07768)
> ffff88006ca07528: 0000000000000806 (0x806)
> ffff88006ca07530: ffffffff85629a78 (__func__.52646+0x253cd8/0x2e8860)
> ffff88006ca07538: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca07540: ffffffff00000002 (0xffffffff00000002)
> ffff88006ca07548: ffff880000000002 (0xffff880000000002)
> ffff88006ca07550: 0000000000000806 (0x806)
> ffff88006ca07558: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07560: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07568: ffffffff85629bc0 (__func__.52646+0x253e20/0x2e8860)
> ffff88006ca07570: ffffffff81425500 (lock_downgrade+0x7c0/0x7c0)
> ffff88006ca07578: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff88006ca07580: ffffffff00000001 (0xffffffff00000001)
> ffff88006ca07588: ffff88006ca23644 (0xffff88006ca23644)
> ffff88006ca07590: 0000000000000000 ...
> ffff88006ca07598: 0000000000000003 (0x3)
> ffff88006ca075a0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca075a8: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca075b0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca075b8: ffff88006ca07600 (0xffff88006ca07600)
> ffff88006ca075c0: ffffffff8141f8ef (mark_held_locks+0xaf/0x100)
> ffff88006ca075c8: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff88006ca075d0: ffffffff00000002 (0xffffffff00000002)
> ffff88006ca075d8: 1ffff1000d940ec2 (0x1ffff1000d940ec2)
> ffff88006ca075e0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca075e8: ffffffff84da2b37 (_raw_spin_unlock_irq+0x27/0x40)
> ffff88006ca075f0: 1ffff1000d940ede (0x1ffff1000d940ede)
> ffff88006ca075f8: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07600: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca07608: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07610: ffffed000c83a93c (0xffffed000c83a93c)
> ffff88006ca07618: 0000000000000000 ...
> ffff88006ca07620: 0000000000000003 (0x3)
> ffff88006ca07628: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07630: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07638: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca07640: ffff88006ca07688 (0xffff88006ca07688)
> ffff88006ca07648: ffffffff8141f8ef (mark_held_locks+0xaf/0x100)
> ffff88006ca07650: 1ffff1000d940ed2 (0x1ffff1000d940ed2)
> ffff88006ca07658: ffff880000000002 (0xffff880000000002)
> ffff88006ca07660: 1ffff1000d940ed3 (0x1ffff1000d940ed3)
> ffff88006ca07668: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07670: ffffffff81497c5e (rcu_process_callbacks+0x42e/0xb50)
> ffff88006ca07678: 1ffff1000d940eef (0x1ffff1000d940eef)
> ffff88006ca07680: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07688: ffff88006ca077e0 (0xffff88006ca077e0)
> ffff88006ca07690: ffffffff8141fc72 (trace_hardirqs_on_caller+0x332/0x6b0)
> ffff88006ca07698: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca076a0: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca076a8: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff88006ca076b0: ffffffff81430e40 (do_raw_spin_trylock+0x190/0x190)
> ffff88006ca076b8: 0000000000000000 ...
> ffff88006ca076c0: ffff88006ca07900 (0xffff88006ca07900)
> ffff88006ca076c8: 000000000000165e (0x165e)
> ffff88006ca076d0: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca076d8: ffffffff8562e2b0 (__func__.52646+0x258510/0x2e8860)
> ffff88006ca076e0: ffffffff814db840 (cleanup_timers_list+0x350/0x350)
> ffff88006ca076e8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca076f0: ffffffff85628200 (__func__.52646+0x252460/0x2e8860)
> ffff88006ca076f8: 0000000000000000 ...
> ffff88006ca07700: 0000000000000001 (0x1)
> ffff88006ca07708: 000000000000165f (0x165f)
> ffff88006ca07710: ffff88006ca07720 (0xffff88006ca07720)
> ffff88006ca07718: ffffffff8127cb05 (kvm_clock_get_cycles+0x25/0x30)
> ffff88006ca07720: 0000000000000012 (0x12)
> ffff88006ca07728: ffffffff814bdb87 (ktime_get+0x2d7/0x3b0)
> ffff88006ca07730: ffff88006ca1b240 (0xffff88006ca1b240)
> ffff88006ca07738: 00000000fffbc54d (0xfffbc54d)
> ffff88006ca07740: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07748: ffff88006ca1b298 (0xffff88006ca1b298)
> ffff88006ca07750: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07758: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff88006ca07760: ffffffff81487560 (rcu_pm_notify+0xc0/0xc0)
> ffff88006ca07768: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff88006ca07770: 0000000000000003 (0x3)
> ffff88006ca07778: 00000000fffbc54e (0xfffbc54e)
> ffff88006ca07780: ffff880000008827 (0xffff880000008827)
> ffff88006ca07788: ffffffff814abe75 (__run_timers+0x245/0xcd0)
> ffff88006ca07790: ffffffff820b5520 (__rb_erase_color+0x27b0/0x27b0)
> ffff88006ca07798: ffffed000d940f46 (0xffffed000d940f46)
> ffff88006ca077a0: 1ffff1000d940f02 (0x1ffff1000d940f02)
> ffff88006ca077a8: ffff88006ca07930 (0xffff88006ca07930)
> ffff88006ca077b0: 0000000000000003 (0x3)
> ffff88006ca077b8: ffffffff8590ce00 (rcu_bh_varname+0x60/0x60)
> ffff88006ca077c0: ffff88006ca07cc8 (0xffff88006ca07cc8)
> ffff88006ca077c8: ffffffff8590ce00 (rcu_bh_varname+0x60/0x60)
> ffff88006ca077d0: ffff88006ca07cc8 (0xffff88006ca07cc8)
> ffff88006ca077d8: ffff88006ca242f8 (0xffff88006ca242f8)
> ffff88006ca077e0: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca077e8: ffff88006ca242c0 (0xffff88006ca242c0)
> ffff88006ca077f0: ffff88006ca07cf0 (0xffff88006ca07cf0)
> ffff88006ca077f8: ffffffff81497afc (rcu_process_callbacks+0x2cc/0xb50)
> ffff88006ca07800: 1ffff1000d940f05 (0x1ffff1000d940f05)
> ffff88006ca07808: ffffed000d940f66 (0xffffed000d940f66)
> ffff88006ca07810: ffffed000d940f59 (0xffffed000d940f59)
> ffff88006ca07818: ffff88006ca07948 (0xffff88006ca07948)
> ffff88006ca07820: ffff88006ca07988 (0xffff88006ca07988)
> ffff88006ca07828: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07830: ffffffff8562c980 (__func__.52646+0x256be0/0x2e8860)
> ffff88006ca07838: ffffffff81497830 (call_rcu_sched+0x20/0x20)
> ffff88006ca07840: 0000000000000802 (0x802)
> ffff88006ca07848: ffffffff81426000 (lock_release+0xb00/0xb00)
> ffff88006ca07850: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca07858: ffffffff00000002 (0xffffffff00000002)
> ffff88006ca07860: ffff880000000002 (0xffff880000000002)
> ffff88006ca07868: 0000000000000802 (0x802)
> ffff88006ca07870: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07878: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07880: ffffffff85629bc0 (__func__.52646+0x253e20/0x2e8860)
> ffff88006ca07888: ffffffff00000001 (0xffffffff00000001)
> ffff88006ca07890: ffff88006ca23558 (0xffff88006ca23558)
> ffff88006ca07898: 0000000000000001 (0x1)
> ffff88006ca078a0: ffff88006ca078e8 (0xffff88006ca078e8)
> ffff88006ca078a8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca078b0: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff88006ca078b8: ffffffff814178e0 (lockdep_init_map+0x750/0x750)
> ffff88006ca078c0: ffff88006ca07b98 (0xffff88006ca07b98)
> ffff88006ca078c8: ffff8800686869f8 (0xffff8800686869f8)
> ffff88006ca078d0: 1ffff1000d940fc2 (0x1ffff1000d940fc2)
> ffff88006ca078d8: ffff88006ca07c00 (0xffff88006ca07c00)
> ffff88006ca078e0: ffffffff814e1f0b (run_posix_cpu_timers+0x1db/0x6b0)
> ffff88006ca078e8: 1ffff1000d940f28 (0x1ffff1000d940f28)
> ffff88006ca078f0: 0000000000000806 (0x806)
> ffff88006ca078f8: ffff880000008827 (0xffff880000008827)
> ffff88006ca07900: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca07908: 0000000000000000 ...
> ffff88006ca07910: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07918: 1ffff1000d940f27 (0x1ffff1000d940f27)
> ffff88006ca07920: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07928: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff88006ca07930: ffffffff814178e0 (lockdep_init_map+0x750/0x750)
> ffff88006ca07938: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07940: ffffffff85629958 (__func__.52646+0x253bb8/0x2e8860)
> ffff88006ca07948: ffffffff8141e540 (print_usage_bug+0x440/0x440)
> ffff88006ca07950: ffffffff816da240 (__perf_event_task_sched_in+0x840/0x840)
> ffff88006ca07958: 0000000000000005 (0x5)
> ffff88006ca07960: ffffed000d9447e4 (0xffffed000d9447e4)
> ffff88006ca07968: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07970: 0000000000000003 (0x3)
> ffff88006ca07978: ffff88006ca07b20 (0xffff88006ca07b20)
> ffff88006ca07980: 1ffff1000d940f5c (0x1ffff1000d940f5c)
> ffff88006ca07988: 1ffff1000d940f42 (0x1ffff1000d940f42)
> ffff88006ca07990: ffff88006ca07c30 (0xffff88006ca07c30)
> ffff88006ca07998: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca079a0: 0000000000000000 ...
> ffff88006ca079a8: ffff8800641d4a10 (0xffff8800641d4a10)
> ffff88006ca079b0: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca079b8: ffff88007fff9017 (0xffff88007fff9017)
> ffff88006ca079c0: ffff88007fff900f (0xffff88007fff900f)
> ffff88006ca079c8: ffffed000ffff203 (0xffffed000ffff203)
> ffff88006ca079d0: ffff88007fff9018 (0xffff88007fff9018)
> ffff88006ca079d8: ffffffff00000006 (0xffffffff00000006)
> ffff88006ca079e0: ffffffff00000801 (0xffffffff00000801)
> ffff88006ca079e8: ffff88007fff901b (0xffff88007fff901b)
> ffff88006ca079f0: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca079f8: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff88006ca07a00: ffffffff8127f060 (pvclock_read_flags+0x160/0x160)
> ffff88006ca07a08: 0000000000000806 (0x806)
> ffff88006ca07a10: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff88006ca07a18: 0000000000000000 ...
> ffff88006ca07a20: ffff88006ca07b80 (0xffff88006ca07b80)
> ffff88006ca07a28: 0000000000000806 (0x806)
> ffff88006ca07a30: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff88006ca07a38: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07a40: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07a48: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07a50: ffff88006ca07d40 (0xffff88006ca07d40)
> ffff88006ca07a58: 0000000000000802 (0x802)
> ffff88006ca07a60: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07a68: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07a70: ffffffff81426a00 (trace_softirqs_on+0x4a0/0x4a0)
> ffff88006ca07a78: ffff88006ca07a88 (0xffff88006ca07a88)
> ffff88006ca07a80: ffffffff8127cb05 (kvm_clock_get_cycles+0x25/0x30)
> ffff88006ca07a88: ffff88006ca07d68 (0xffff88006ca07d68)
> ffff88006ca07a90: ffffffff814bdb87 (ktime_get+0x2d7/0x3b0)
> ffff88006ca07a98: ffffed000d940f98 (0xffffed000d940f98)
> ffff88006ca07aa0: 1ffff1000d940f5c (0x1ffff1000d940f5c)
> ffff88006ca07aa8: ffff88006ca07b80 (0xffff88006ca07b80)
> ffff88006ca07ab0: ffff88006ca07bc0 (0xffff88006ca07bc0)
> ffff88006ca07ab8: ffff88006ca07c00 (0xffff88006ca07c00)
> ffff88006ca07ac0: ffff88006ca07b00 (0xffff88006ca07b00)
> ffff88006ca07ac8: ffff88006ca07b40 (0xffff88006ca07b40)
> ffff88006ca07ad0: 00000005406bf9f2 (0x5406bf9f2)
> ffff88006ca07ad8: 000000170d940f63 (0x170d940f63)
> ffff88006ca07ae0: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07ae8: ffffffff85619998 (__func__.52646+0x243bf8/0x2e8860)
> ffff88006ca07af0: ffffffff814bd8b0 (ktime_get_resolution_ns+0x340/0x340)
> ffff88006ca07af8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07b00: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca07b08: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07b10: ffffed000c83a93c (0xffffed000c83a93c)
> ffff88006ca07b18: 0000000000000000 ...
> ffff88006ca07b20: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff88006ca07b28: ffff88006ca07b78 (0xffff88006ca07b78)
> ffff88006ca07b30: ffffffff81418846 (__lock_is_held+0xb6/0x140)
> ffff88006ca07b38: ffffffff641d49e8 (0xffffffff641d49e8)
> ffff88006ca07b40: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff88006ca07b48: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff88006ca07b50: 1ffff1000d940f72 (0x1ffff1000d940f72)
> ffff88006ca07b58: ffff88006ca07cb0 (0xffff88006ca07cb0)
> ffff88006ca07b60: 0000000000000a06 (0xa06)
> ffff88006ca07b68: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff88006ca07b70: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07b78: ffff88006ca07cd8 (0xffff88006ca07cd8)
> ffff88006ca07b80: 0000000000000a06 (0xa06)
> ffff88006ca07b88: ffff88006ca07ce0 (0xffff88006ca07ce0)
> ffff88006ca07b90: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07b98: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07ba0: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff88006ca07ba8: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff88006ca07bb0: 0000000000000802 (0x802)
> ffff88006ca07bb8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07bc0: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07bc8: ffffffff812dde90 (trace_raw_output_softirq+0x1c0/0x1c0)
> ffff88006ca07bd0: ffff88006ca1cb80 (0xffff88006ca1cb80)
> ffff88006ca07bd8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07be0: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff88006ca07be8: ffffffff81487560 (rcu_pm_notify+0xc0/0xc0)
> ffff88006ca07bf0: 0000000000000000 ...
> ffff88006ca07bf8: 0000000000000003 (0x3)
> ffff88006ca07c00: 0000000550a7a300 (0x550a7a300)
> ffff88006ca07c08: ffff880000008827 (0xffff880000008827)
> ffff88006ca07c10: 0000000000000000 ...
> ffff88006ca07c18: 0000000550b6e540 (0x550b6e540)
> ffff88006ca07c20: 0000000000000001 (0x1)
> ffff88006ca07c28: 1ffff1000d940f9b (0x1ffff1000d940f9b)
> ffff88006ca07c30: ffff8800641d4a10 (0xffff8800641d4a10)
> ffff88006ca07c38: ffff88006ca1c518 (0xffff88006ca1c518)
> ffff88006ca07c40: ffff88006ca1c518 (0xffff88006ca1c518)
> ffff88006ca07c48: 0000000000000001 (0x1)
> ffff88006ca07c50: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07c58: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff88006ca07c60: ffffffff81487560 (rcu_pm_notify+0xc0/0xc0)
> ffff88006ca07c68: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff88006ca07c70: 0000000000000003 (0x3)
> ffff88006ca07c78: ffffffff86ea6d40 (console_drivers+0x40/0x40)
> ffff88006ca07c80: ffff880000008827 (0xffff880000008827)
> ffff88006ca07c88: ffff88006ca07cf8 (0xffff88006ca07cf8)
> ffff88006ca07c90: ffff88006ca07eb8 (0xffff88006ca07eb8)
> ffff88006ca07c98: ffff88006ca07ee0 (0xffff88006ca07ee0)
> ffff88006ca07ca0: 0000000000000806 (0x806)
> ffff88006ca07ca8: 0000000000000003 (0x3)
> ffff88006ca07cb0: 0000000000000003 (0x3)
> ffff88006ca07cb8: 0000000000000040 (0x40)
> ffff88006ca07cc0: 0000000000000009 (0x9)
> ffff88006ca07cc8: ffffffff85809148 (softirq_vec+0x48/0x80)
> ffff88006ca07cd0: 0000000000000040 (0x40)
> ffff88006ca07cd8: 0000000000000009 (0x9)
> ffff88006ca07ce0: ffffffff85809110 (softirq_vec+0x10/0x80)
> ffff88006ca07ce8: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07cf0: ffff88006ca07fb0 (0xffff88006ca07fb0)
> ffff88006ca07cf8: ffffffff84dab1bb (__do_softirq+0x2fb/0xb99)
> ffff88006ca07d00: ffffffff814b5030 (hrtimer_cancel+0x40/0x40)
> ffff88006ca07d08: 1ffff1000d940fad (0x1ffff1000d940fad)
> ffff88006ca07d10: 0100000500404140 (0x100000500404140)
> ffff88006ca07d18: ffffed000c83a840 (0xffffed000c83a840)
> ffff88006ca07d20: ffff8800641d4200 (0xffff8800641d4200)
> ffff88006ca07d28: 00000000fffbc54f (0xfffbc54f)
> ffff88006ca07d30: ffff88006ca1cb7c (0xffff88006ca1cb7c)
> ffff88006ca07d38: ffff88006ca07d48 (0xffff88006ca07d48)
> ffff88006ca07d40: ffffed000d940fe9 (0xffffed000d940fe9)
> ffff88006ca07d48: 0000000000000009 (0x9)
> ffff88006ca07d50: ffffffff00000009 (0xffffffff00000009)
> ffff88006ca07d58: 000001000000000a (0x1000000000a)
> ffff88006ca07d60: 0000008000000008 (0x8000000008)
> ffff88006ca07d68: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07d70: ffffffff8561f2b0 (__func__.52646+0x249510/0x2e8860)
> ffff88006ca07d78: ffffffff84daaec0 (__irqentry_text_end+0x2/0x2)
> ffff88006ca07d80: 0000000000000003 (0x3)
> ffff88006ca07d88: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07d90: ffffffff8562e7a0 (__func__.52646+0x258a00/0x2e8860)
> ffff88006ca07d98: ffffffff814e9040 (clockevents_tick_resume+0x60/0x60)
> ffff88006ca07da0: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07da8: 00000000000e9070 (0xe9070)
> ffff88006ca07db0: ffffffff84daaec0 (__irqentry_text_end+0x2/0x2)
> ffff88006ca07db8: ffff88006ca07de8 (0xffff88006ca07de8)
> ffff88006ca07dc0: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07dc8: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07dd0: ffff88006ca23540 (0xffff88006ca23540)
> ffff88006ca07dd8: 1ffff1000d940fe7 (0x1ffff1000d940fe7)
> ffff88006ca07de0: 0000000000000000 ...
> ffff88006ca07de8: 00000008000385f2 (0x8000385f2)
> ffff88006ca07df0: ffffffff81387ba6 (sched_ttwu_pending+0x256/0x370)
> ffff88006ca07df8: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07e00: ffff88006bd1ac28 (0xffff88006bd1ac28)
> ffff88006ca07e08: ffff88006ca23558 (0xffff88006ca23558)
> ffff88006ca07e10: 0000000000000000 ...
> ffff88006ca07e18: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07e20: ffffffff856373a3 (__func__.52646+0x261603/0x2e8860)
> ffff88006ca07e28: 00000000000e9070 (0xe9070)
> ffff88006ca07e30: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07e38: ffffffff85807a00 (init_thread_union+0x7a00/0x8000)
> ffff88006ca07e40: 0000000000000802 (0x802)
> ffff88006ca07e48: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07e50: 0000000000000806 (0x806)
> ffff88006ca07e58: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07e60: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07e68: ffffffff81412900 (trace_raw_output_lock+0x190/0x190)
> ffff88006ca07e70: 0000000000000000 ...
> ffff88006ca07e78: 0000000000000001 (0x1)
> ffff88006ca07e80: 0000000041b58ab3 (0x41b58ab3)
> ffff88006ca07e88: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff88006ca07e90: 0000000000000000 ...
> ffff88006ca07e98: 0000000000000001 (0x1)
> ffff88006ca07ea0: ffff88006c489c20 (0xffff88006c489c20)
> ffff88006ca07ea8: ffff88006ca15980 (0xffff88006ca15980)
> ffff88006ca07eb0: 0000000550b6e540 (0x550b6e540)
> ffff88006ca07eb8: 0000000000000000 ...
> ffff88006ca07ec0: dffffc0000000000 (0xdffffc0000000000)
> ffff88006ca07ec8: 0000000000000000 ...
> ffff88006ca07ed0: ffff88006ca07ef8 (0xffff88006ca07ef8)
> ffff88006ca07ed8: ffffffff814ef56f (tick_program_event+0x7f/0xd0)
> ffff88006ca07ee0: ffff88006ca1c618 (0xffff88006ca1c618)
> ffff88006ca07ee8: ffff88006ca1c500 (0xffff88006ca1c500)
> ffff88006ca07ef0: 0000000000000000 ...
> ffff88006ca07ef8: ffff88006ca07fa0 (0xffff88006ca07fa0)
> ffff88006ca07f00: ffffffff814b7bb5 (hrtimer_interrupt+0x465/0x5c0)
> ffff88006ca07f08: ffff88006ca1c578 (0xffff88006ca1c578)
> ffff88006ca07f10: 0000000550a7dc65 (0x550a7dc65)
> ffff88006ca07f18: 000000036ca07f68 (0x36ca07f68)
> ffff88006ca07f20: ffff88006ca1c570 (0xffff88006ca1c570)
> ffff88006ca07f28: ffff88006ca1c6a8 (0xffff88006ca1c6a8)
> ffff88006ca07f30: ffff88006ca1c668 (0xffff88006ca1c668)
> ffff88006ca07f38: ffff88006ca1c628 (0xffff88006ca1c628)
> ffff88006ca07f40: ffff88006ca1c580 (0xffff88006ca1c580)
> ffff88006ca07f48: 0000000000000000 ...
> ffff88006ca07f50: ffffed000d9438af (0xffffed000d9438af)
> ffff88006ca07f58: ffffed000d9438ae (0xffffed000d9438ae)
> ffff88006ca07f60: ffff88006ca1c576 (0xffff88006ca1c576)
> ffff88006ca07f68: ffff88006ca1c500 (0xffff88006ca1c500)
> ffff88006ca07f70: 0000000550b6e540 (0x550b6e540)
> ffff88006ca07f78: ffffffff85722ba0 (apic+0x20/0x20)
> ffff88006ca07f80: 0000000000000000 ...
> ffff88006ca07f88: ffff88006bd19600 (0xffff88006bd19600)
> ffff88006ca07f90: 0000000000000000 ...
> ffff88006ca07f98: df58dcdd0d9f9a20 (0xdf58dcdd0d9f9a20)
> ffff88006ca07fa0: a06f240a9dcda1bb (0xa06f240a9dcda1bb)
> ffff88006ca07fa8: ffff880069d60040 (0xffff880069d60040)
> ffff88006ca07fb0: ffff88006ca07fc8 (0xffff88006ca07fc8)
> ffff88006ca07fb8: ffffffff812e10be (irq_exit+0x19e/0x1d0)
> ffff88006ca07fc0: ffffffff85722ba0 (apic+0x20/0x20)
> ffff88006ca07fc8: ffff88006ca07fe8 (0xffff88006ca07fe8)
> ffff88006ca07fd0: ffffffff84da97a6 (smp_apic_timer_interrupt+0x76/0xa0)
> ffff88006ca07fd8: 8f07039dbc0668c3 (0x8f07039dbc0668c3)
> ffff88006ca07fe0: 0000000000000030 (0x30)
> ffff88006ca07fe8: ffff8800686869f9 (0xffff8800686869f9)
> ffff88006ca07ff0: ffffffff84da4f73 (apic_timer_interrupt+0x93/0xa0)
> ffff88006ca07ff8: ffff8800686869f8 (0xffff8800686869f8)
> ffff8800686869f8: ffff880069d60040 (0xffff880069d60040)
> ffff880068686a00: a06f240a9dcda1bb (0xa06f240a9dcda1bb)
> ffff880068686a08: df58dcdd0d9f9a20 (0xdf58dcdd0d9f9a20)
> ffff880068686a10: 0000000000000030 (0x30)
> ffff880068686a18: c3fc855a10167ec0 (0xc3fc855a10167ec0)
> ffff880068686a20: 8f07039dbc0668c3 (0x8f07039dbc0668c3)
> ffff880068686a28: 4988ba799304f201 (0x4988ba799304f201)
> ffff880068686a30: a0d768f2d28e4d58 (0xa0d768f2d28e4d58)
> ffff880068686a38: 0000000000000000 ...
> ffff880068686a40: c19e5c8e64b6099d (0xc19e5c8e64b6099d)
> ffff880068686a48: 61f71af55c241978 (0x61f71af55c241978)
> ffff880068686a50: 0000000000000ffc (0xffc)
> ffff880068686a58: 3c839ea8615b5a4e (0x3c839ea8615b5a4e)
> ffff880068686a60: ffff880069d60400 (0xffff880069d60400)
> ffff880068686a68: 00000000200043c0 (0x200043c0)
> ffff880068686a70: ffffffffffffff10 (0xffffffffffffff10)
> ffff880068686a78: ffffffff84d876ac (csum_partial_copy_generic+0x6c/0x170)
> ffff880068686a80: 0000000000000010 (0x10)
> ffff880068686a88: 0000000000000a17 (0xa17)
> ffff880068686a90: ffff880068686aa0 (0xffff880068686aa0)
> ffff880068686a98: 0000000000000018 (0x18)
> ffff880068686aa0: ffff880068686c98 (0xffff880068686c98)
> ffff880068686aa8: 0000000000000000 ...
> ffff880068686ab0: ffff880068686c98 (0xffff880068686c98)
> ffff880068686ab8: 0000000020004000 (0x20004000)
> ffff880068686ac0: 0000000000000ffc (0xffc)
> ffff880068686ac8: 0000000000000000 ...
> ffff880068686ad0: ffff880068686b20 (0xffff880068686b20)
> ffff880068686ad8: ffffffff84d8723b (csum_partial_copy_from_user+0x10b/0x290)
> ffff880068686ae0: 0000000000000ffc (0xffc)
> ffff880068686ae8: 0000000020004ffc (0x20004ffc)
> ffff880068686af0: 00007ffffffff000 (0x7ffffffff000)
> ffff880068686af8: 0000000000000ffc (0xffc)
> ffff880068686b00: ffff880068687d80 (0xffff880068687d80)
> ffff880068686b08: ffffed000d0d0d93 (0xffffed000d0d0d93)
> ffff880068686b10: ffff880068687058 (0xffff880068687058)
> ffff880068686b18: ffff880068686c98 (0xffff880068686c98)
> ffff880068686b20: ffff880068687080 (0xffff880068687080)
> ffff880068686b28: ffffffff820f1e05 (csum_and_copy_from_iter_full+0x3d5/0x1620)
> ffff880068686b30: 0000000000000000 ...
> ffff880068686b38: ffff880068686c18 (0xffff880068686c18)
> ffff880068686b40: ffffffff85930490 (kprobe_insn_slots+0x90/0xe0)
> ffff880068686b48: ffff880068686c40 (0xffff880068686c40)
> ffff880068686b50: ffffffff815c0783 (__is_insn_slot_addr+0x233/0x350)
> ffff880068686b58: ffff880068686bd8 (0xffff880068686bd8)
> ffff880068686b60: 1ffff1000d0d0d6f (0x1ffff1000d0d0d6f)
> ffff880068686b68: ffffffff8560f2c7 (__func__.52646+0x239527/0x2e8860)
> ffff880068686b70: ffffffff85930490 (kprobe_insn_slots+0x90/0xe0)
> ffff880068686b78: 0000000041b58ab3 (0x41b58ab3)
> ffff880068686b80: ffffffff8560f2c7 (__func__.52646+0x239527/0x2e8860)
> ffff880068686b88: 1ffff1000d0d0d7f (0x1ffff1000d0d0d7f)
> ffff880068686b90: 0000000068686cd0 (0x68686cd0)
> ffff880068686b98: ffff880067dd0500 (0xffff880067dd0500)
> ffff880068686ba0: ffffffff8560f2c7 (__func__.52646+0x239527/0x2e8860)
> ffff880068686ba8: ffffffff812821a0 (update_stack_state+0x750/0x750)
> ffff880068686bb0: ffff8800686870d0 (0xffff8800686870d0)
> ffff880068686bb8: 0000000000000ffc (0xffc)
> ffff880068686bc0: 0000000041b58ab3 (0x41b58ab3)
> ffff880068686bc8: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff880068686bd0: ffffffff814178e0 (lockdep_init_map+0x750/0x750)
> ffff880068686bd8: ffffffff85930490 (kprobe_insn_slots+0x90/0xe0)
> ffff880068686be0: dffffc0000000000 (0xdffffc0000000000)
> ffff880068686be8: ffff880069d60040 (0xffff880069d60040)
> ffff880068686bf0: ffff880068687dd0 (0xffff880068687dd0)
> ffff880068686bf8: 0000000041b58ab3 (0x41b58ab3)
> ffff880068686c00: ffffffff8566b848 (__func__.52646+0x295aa8/0x2e8860)
> ffff880068686c08: ffffffff820f1a30 (copy_from_iter_full_nocache+0x1210/0x1210)
> ffff880068686c10: 0000000000000000 ...
> ffff880068686c18: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068686c20: ffff88006c402280 (0xffff88006c402280)
> ffff880068686c28: ffff880068686c40 (0xffff880068686c40)
> ffff880068686c30: ffffffff81676244 (is_bpf_text_address+0xa4/0x120)
> ffff880068686c38: 0000000000000000 ...
> ffff880068686c40: ffff880068686c58 (0xffff880068686c58)
> ffff880068686c48: ffffffff81349aaf (__kernel_text_address+0xaf/0xe0)
> ffff880068686c50: ffff880068686c88 (0xffff880068686c88)
> ffff880068686c58: ffff880068686c78 (0xffff880068686c78)
> ffff880068686c60: ffffffff812814e1 (unwind_get_return_address+0x61/0xa0)
> ffff880068686c68: ffff880068686d20 (0xffff880068686d20)
> ffff880068686c70: 0000000000000000 ...
> ffff880068686c78: ffff880068686d00 (0xffff880068686d00)
> ffff880068686c80: ffffffff8120e51e (__save_stack_trace+0x7e/0xd0)
> ffff880068686c88: 0000000000000001 (0x1)
> ffff880068686c90: ffff880068680000 (0xffff880068680000)
> ffff880068686c98: ffff880000000000 (0xffff880000000000)
> ffff880068686ca0: 0000000000000000 ...
> ffff880068686ca8: 00000000ea2112c8 (0xea2112c8)
> ffff880068686cb0: 0000000000000010 (0x10)
> ffff880068686cb8: ffff880068686d10 (0xffff880068686d10)
> ffff880068686cc0: ffffffff8217e70c (depot_save_stack+0x12c/0x460)
> ffff880068686cc8: ffff8800014102c0 (0xffff8800014102c0)
> ffff880068686cd0: ffff880068686d20 (0xffff880068686d20)
> ffff880068686cd8: 00000000000112c8 (0x112c8)
> ffff880068686ce0: 0000000000000000 ...
> ffff880068686ce8: 00000000014102c0 (0x14102c0)
> ffff880068686cf0: ffff880069d62000 (0xffff880069d62000)
> ffff880068686cf8: 00000000014102c0 (0x14102c0)
> ffff880068686d00: ffff880069d62000 (0xffff880069d62000)
> ffff880068686d08: ffff88006c402280 (0xffff88006c402280)
> ffff880068686d10: ffff880068686f40 (0xffff880068686f40)
> ffff880068686d18: ffffffff8187ab23 (save_stack+0xa3/0xd0)
> ffff880068686d20: 0000004000000010 (0x4000000010)
> ffff880068686d28: ffff880068686d38 (0xffff880068686d38)
> ffff880068686d30: ffff880000000000 (0xffff880000000000)
> ffff880068686d38: ffffffff8120e586 (save_stack_trace+0x16/0x20)
> ffff880068686d40: ffffffff8187aac3 (save_stack+0x43/0xd0)
> ffff880068686d48: ffffffff8187ad8d (kasan_kmalloc+0xad/0xe0)
> ffff880068686d50: ffffffff8187b352 (kasan_slab_alloc+0x12/0x20)
> ffff880068686d58: ffffffff8187a18d (__kmalloc_node_track_caller+0x20d/0x350)
> ffff880068686d60: ffffffff8343f991 (__kmalloc_reserve.isra.32+0x41/0xd0)
> ffff880068686d68: ffffffff83445117 (__alloc_skb+0x157/0x770)
> ffff880068686d70: ffffffff8342c111 (sock_wmalloc+0x151/0x1f0)
> ffff880068686d78: ffffffff83d82a8b (__ip6_append_data.isra.42+0x285b/0x3b30)
> ffff880068686d80: ffffffff83d83ee9 (ip6_append_data+0x189/0x290)
> ffff880068686d88: ffffffff83e21f82 (rawv6_sendmsg+0x1ff2/0x43e0)
> ffff880068686d90: ffffffff83bbb144 (inet_sendmsg+0x164/0x5b0)
> ffff880068686d98: ffffffff8341a35a (sock_sendmsg+0xca/0x110)
> ffff880068686da0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff880068686da8: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068686db0: ffffed000c83a93c (0xffffed000c83a93c)
> ffff880068686db8: 0000000000000000 ...
> ffff880068686dc0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff880068686dc8: ffff880068686e18 (0xffff880068686e18)
> ffff880068686dd0: ffffffff81418846 (__lock_is_held+0xb6/0x140)
> ffff880068686dd8: ffffffff0d0d0ddb (0xffffffff0d0d0ddb)
> ffff880068686de0: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff880068686de8: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff880068686df0: 1ffff1000d0d0dc6 (0x1ffff1000d0d0dc6)
> ffff880068686df8: ffff880068686f50 (0xffff880068686f50)
> ffff880068686e00: 0000000000000a06 (0xa06)
> ffff880068686e08: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff880068686e10: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068686e18: ffff880068686f78 (0xffff880068686f78)
> ffff880068686e20: 0000000000000a06 (0xa06)
> ffff880068686e28: ffffffff818733ae (new_slab+0x28e/0x470)
> ffff880068686e30: 0000000041b58ab3 (0x41b58ab3)
> ffff880068686e38: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff880068686e40: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff880068686e48: ffff88006c402280 (0xffff88006c402280)
> ffff880068686e50: 00000000014102c0 (0x14102c0)
> ffff880068686e58: ffff88006c402280 (0xffff88006c402280)
> ffff880068686e60: 0000000000000002 (0x2)
> ffff880068686e68: ffff88006c400600 (0xffff88006c400600)
> ffff880068686e70: ffff880068686f40 (0xffff880068686f40)
> ffff880068686e78: ffffffff81875ab7 (___slab_alloc+0x357/0x550)
> ffff880068686e80: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff880068686e88: ffff88006ca26b50 (0xffff88006ca26b50)
> ffff880068686e90: 00000000686873e0 (0x686873e0)
> ffff880068686e98: ffff88006ca26b60 (0xffff88006ca26b60)
> ffff880068686ea0: ffff8800641d5210 (0xffff8800641d5210)
> ffff880068686ea8: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068686eb0: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068686eb8: 0000000000000000 ...
> ffff880068686ec0: ffffffff83445117 (__alloc_skb+0x157/0x770)
> ffff880068686ec8: ffffffff00000002 (0xffffffff00000002)
> ffff880068686ed0: ffff8800641d4a08 (0xffff8800641d4a08)
> ffff880068686ed8: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff880068686ee0: ffffffff86969180 (lock_classes+0x664e0/0x35fe80)
> ffff880068686ee8: 0000000100030003 (0x100030003)
> ffff880068686ef0: 0000000041b58ab3 (0x41b58ab3)
> ffff880068686ef8: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff880068686f00: ffffffff81487560 (rcu_pm_notify+0xc0/0xc0)
> ffff880068686f08: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff880068686f10: 0000000000000003 (0x3)
> ffff880068686f18: 0000000000000ffc (0xffc)
> ffff880068686f20: 0000000000008827 (0x8827)
> ffff880068686f28: ffffffff8187ac15 (kasan_unpoison_shadow+0x35/0x50)
> ffff880068686f30: ffff880069d61fff (0xffff880069d61fff)
> ffff880068686f38: 1ffff1000d3ac400 (0x1ffff1000d3ac400)
> ffff880068686f40: ffff880068686f80 (0xffff880068686f80)
> ffff880068686f48: ffffffff8187ad8d (kasan_kmalloc+0xad/0xe0)
> ffff880068686f50: 0000000000000003 (0x3)
> ffff880068686f58: 0000000000000ffc (0xffc)
> ffff880068686f60: ffff880069d60000 (0xffff880069d60000)
> ffff880068686f68: 0000000000001180 (0x1180)
> ffff880068686f70: ffff88006c402280 (0xffff88006c402280)
> ffff880068686f78: ffff880068686f90 (0xffff880068686f90)
> ffff880068686f80: ffffffff8147d678 (rcu_read_lock_sched_held+0x108/0x120)
> ffff880068686f88: 0000000000400000 (0x400000)
> ffff880068686f90: ffff880068686fd8 (0xffff880068686fd8)
> ffff880068686f98: ffffffff8187a241 (__kmalloc_node_track_caller+0x2c1/0x350)
> ffff880068686fa0: ffffffff83445117 (__alloc_skb+0x157/0x770)
> ffff880068686fa8: ffffffffffffffff (0xffffffffffffffff)
> ffff880068686fb0: ffff880068687068 (0xffff880068687068)
> ffff880068686fb8: ffff8800668fbb40 (0xffff8800668fbb40)
> ffff880068686fc0: 00000000014000c0 (0x14000c0)
> ffff880068686fc8: 00000000ffffffff (0xffffffff)
> ffff880068686fd0: 0000000000000000 ...
> ffff880068686fd8: ffff880068687018 (0xffff880068687018)
> ffff880068686fe0: ffff880069d61ec0 (0xffff880069d61ec0)
> ffff880068686fe8: 0000000000000024 (0x24)
> ffff880068686ff0: ffff880068687018 (0xffff880068687018)
> ffff880068686ff8: ffffffff8187ae51 (memset+0x31/0x40)
> ffff880068687000: 1ffff1000d0d0e09 (0x1ffff1000d0d0e09)
> ffff880068687008: ffff8800668fbb40 (0xffff8800668fbb40)
> ffff880068687010: ffff880068687168 (0xffff880068687168)
> ffff880068687018: ffff880068687190 (0xffff880068687190)
> ffff880068687020: ffffffff83445520 (__alloc_skb+0x560/0x770)
> ffff880068687028: 00000000814178e0 (0x814178e0)
> ffff880068687030: 0000000000002000 (0x2000)
> ffff880068687038: ffff880068687068 (0xffff880068687068)
> ffff880068687040: ffff880000001ec0 (0xffff880000001ec0)
> ffff880068687048: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687050: ffffffff856dbe98 (_fw_yam_9600_bin_name+0x1d800/0x5f2d0)
> ffff880068687058: 1ffff1000d0d0e16 (0x1ffff1000d0d0e16)
> ffff880068687060: ffff8800686870d0 (0xffff8800686870d0)
> ffff880068687068: ffffed000d0d0e1a (0xffffed000d0d0e1a)
> ffff880068687070: ffff880068687110 (0xffff880068687110)
> ffff880068687078: ffff8800668fbb40 (0xffff8800668fbb40)
> ffff880068687080: ffff880068687138 (0xffff880068687138)
> ffff880068687088: ffffffff83a8f0b2 (ip_generic_getfrag+0x112/0x250)
> ffff880068687090: 0000000000000ffc (0xffc)
> ffff880068687098: ffff880000000000 (0xffff880000000000)
> ffff8800686870a0: ffff880069d60040 (0xffff880069d60040)
> ffff8800686870a8: ffff880068687dd0 (0xffff880068687dd0)
> ffff8800686870b0: 0000000041b58ab3 (0x41b58ab3)
> ffff8800686870b8: ffffffff856bf233 (_fw_yam_9600_bin_name+0xb9b/0x5f2d0)
> ffff8800686870c0: ffffffff83a8efa0 (ip_reply_glue_bits+0xb0/0xb0)
> ffff8800686870c8: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff8800686870d0: 0000000000000000 ...
> ffff8800686870d8: ffff880068070a80 (0xffff880068070a80)
> ffff8800686870e0: 0000000100008827 (0x100008827)
> ffff8800686870e8: 0000000000000001 (0x1)
> ffff8800686870f0: ffffffff85629700 (__func__.52646+0x253960/0x2e8860)
> ffff8800686870f8: ffffffff814178e0 (lockdep_init_map+0x750/0x750)
> ffff880068687100: ffff880068687390 (0xffff880068687390)
> ffff880068687108: ffff880068687390 (0xffff880068687390)
> ffff880068687110: 0000000000000ffc (0xffc)
> ffff880068687118: 1ffff1000d0d0e2f (0x1ffff1000d0d0e2f)
> ffff880068687120: 0000000000000000 ...
> ffff880068687128: ffff8800686879c0 (0xffff8800686879c0)
> ffff880068687130: ffff8800668fbb40 (0xffff8800668fbb40)
> ffff880068687138: ffff880068687240 (0xffff880068687240)
> ffff880068687140: ffffffff83e1d293 (raw6_getfrag+0x2c3/0x3b0)
> ffff880068687148: dffffc0000000000 (0xdffffc0000000000)
> ffff880068687150: ffff8800686879c8 (0xffff8800686879c8)
> ffff880068687158: ffff880068687218 (0xffff880068687218)
> ffff880068687160: 0000000000000000 ...
> ffff880068687168: ffff880069d60040 (0xffff880069d60040)
> ffff880068687170: ffff880000000000 (0xffff880000000000)
> ffff880068687178: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687180: ffffffff8561af08 (__func__.52646+0x245168/0x2e8860)
> ffff880068687188: ffffffff83e1cfd0 (rawv6_mh_filter_unregister+0xb0/0xb0)
> ffff880068687190: ffff880068687240 (0xffff880068687240)
> ffff880068687198: ffffffff8342c12e (sock_wmalloc+0x16e/0x1f0)
> ffff8800686871a0: ffffffff8141e540 (print_usage_bug+0x440/0x440)
> ffff8800686871a8: 000000000000103c (0x103c)
> ffff8800686871b0: ffff880000000001 (0xffff880000000001)
> ffff8800686871b8: 0000000041b58ab3 (0x41b58ab3)
> ffff8800686871c0: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff8800686871c8: ffffffff8342bfc0 (skb_set_owner_w+0x2f0/0x2f0)
> ffff8800686871d0: 1ffff1000d0d0e41 (0x1ffff1000d0d0e41)
> ffff8800686871d8: 1ffff1000d0d0e4c (0x1ffff1000d0d0e4c)
> ffff8800686871e0: ffff880068687480 (0xffff880068687480)
> ffff8800686871e8: ffff8800641d4200 (0xffff8800641d4200)
> ffff8800686871f0: 0000000000000002 (0x2)
> ffff8800686871f8: 1ffff1000d0d0e55 (0x1ffff1000d0d0e55)
> ffff880068687200: ffff8800641d4a10 (0xffff8800641d4a10)
> ffff880068687208: ffffffff8590b0a0 (rcu_bh_lock_map+0x40/0x40)
> ffff880068687210: ffffffff83441065 (skb_put+0x155/0x1d0)
> ffff880068687218: 0000000000000ffc (0xffc)
> ffff880068687220: 0000000000000ffc (0xffc)
> ffff880068687228: ffff880069d60040 (0xffff880069d60040)
> ffff880068687230: 0000000000000000 ...
> ffff880068687238: ffff8800668fbb40 (0xffff8800668fbb40)
> ffff880068687240: ffff880068687608 (0xffff880068687608)
> ffff880068687248: ffffffff83d82014 (__ip6_append_data.isra.42+0x1de4/0x3b30)
> ffff880068687250: ffffffff8590b0a0 (rcu_bh_lock_map+0x40/0x40)
> ffff880068687258: ffff8800686872c8 (0xffff8800686872c8)
> ffff880068687260: 0000000068687488 (0x68687488)
> ffff880068687268: ffff880065b40f58 (0xffff880065b40f58)
> ffff880068687270: 0000000000000a06 (0xa06)
> ffff880068687278: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff880068687280: 0000001000000000 (0x1000000000)
> ffff880068687288: 1ffff1000d0d0e68 (0x1ffff1000d0d0e68)
> ffff880068687290: 0000000000000000 ...
> ffff880068687298: ffff880068687360 (0xffff880068687360)
> ffff8800686872a0: ffff880065b40f50 (0xffff880065b40f50)
> ffff8800686872a8: 0001000000000028 (0x1000000000028)
> ffff8800686872b0: ffffffff85629bc0 (__func__.52646+0x253e20/0x2e8860)
> ffff8800686872b8: ffffffff81425500 (lock_downgrade+0x7c0/0x7c0)
> ffff8800686872c0: ffff88006afc2fd8 (0xffff88006afc2fd8)
> ffff8800686872c8: ffff880000000001 (0xffff880000000001)
> ffff8800686872d0: ffff880065b4119c (0xffff880065b4119c)
> ffff8800686872d8: ffff8800686873e0 (0xffff8800686873e0)
> ffff8800686872e0: ffff880068687420 (0xffff880068687420)
> ffff8800686872e8: ffff8800686873a0 (0xffff8800686873a0)
> ffff8800686872f0: ffff8800668fbbd0 (0xffff8800668fbbd0)
> ffff8800686872f8: ffff8800668fbbd8 (0xffff8800668fbbd8)
> ffff880068687300: ffff8800668fbc10 (0xffff8800668fbc10)
> ffff880068687308: ffff880000000000 (0xffff880000000000)
> ffff880068687310: ffffffff00000ffc (0xffffffff00000ffc)
> ffff880068687318: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff880068687320: ffff880065b40d00 (0xffff880065b40d00)
> ffff880068687328: 0000000000000000 ...
> ffff880068687330: ffff880065b41188 (0xffff880065b41188)
> ffff880068687338: ffff8800641d5350 (0xffff8800641d5350)
> ffff880068687340: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687348: ffffffff856f4fd0 (_fw_yam_9600_bin_name+0x36938/0x5f2d0)
> ffff880068687350: ffffffff83d80230 (ip6_cork_release.isra.41+0x2c0/0x2c0)
> ffff880068687358: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687360: ffffffff85618d00 (__func__.52646+0x242f60/0x2e8860)
> ffff880068687368: ffffffff814188d0 (__lock_is_held+0x140/0x140)
> ffff880068687370: 0000000000000000 ...
> ffff880068687378: 0000000000000007 (0x7)
> ffff880068687380: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687388: dffffc0000000000 (0xdffffc0000000000)
> ffff880068687390: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff880068687398: ffff8800686873e0 (0xffff8800686873e0)
> ffff8800686873a0: ffffffff0000fff8 (0xffffffff0000fff8)
> ffff8800686873a8: ffff880068687648 (0xffff880068687648)
> ffff8800686873b0: ffff880000000006 (0xffff880000000006)
> ffff8800686873b8: 1ffff1000d0d0e7e (0x1ffff1000d0d0e7e)
> ffff8800686873c0: ffff8800641d4200 (0xffff8800641d4200)
> ffff8800686873c8: ffffffff812dec99 (__local_bh_enable_ip+0x139/0x1e0)
> ffff8800686873d0: 1ffff1000d0d0e9a (0x1ffff1000d0d0e9a)
> ffff8800686873d8: dffffc0000000000 (0xdffffc0000000000)
> ffff8800686873e0: ffff880000010000 (0xffff880000010000)
> ffff8800686873e8: ffffffff8141fe0b (trace_hardirqs_on_caller+0x4cb/0x6b0)
> ffff8800686873f0: 0000000041b58ab3 (0x41b58ab3)
> ffff8800686873f8: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff880068687400: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff880068687408: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff880068687410: ffffffff81426560 (lock_acquire+0x560/0x560)
> ffff880068687418: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687420: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff880068687428: ffffffff81487560 (rcu_pm_notify+0xc0/0xc0)
> ffff880068687430: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff880068687438: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687440: ffffffff8560f8ec (__func__.52646+0x239b4c/0x2e8860)
> ffff880068687448: 0000000000000000 ...
> ffff880068687450: ffffffff81426000 (lock_release+0xb00/0xb00)
> ffff880068687458: ffff880000008827 (0xffff880000008827)
> ffff880068687460: 0000000000000001 (0x1)
> ffff880068687468: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687470: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687478: 1ffff1000d0d0e98 (0x1ffff1000d0d0e98)
> ffff880068687480: ffff8800686875a0 (0xffff8800686875a0)
> ffff880068687488: 1ffff1000d0d0e98 (0x1ffff1000d0d0e98)
> ffff880068687490: ffff8800686875a0 (0xffff8800686875a0)
> ffff880068687498: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff8800686874a0: 0000000000010000 (0x10000)
> ffff8800686874a8: ffff880068070900 (0xffff880068070900)
> ffff8800686874b0: ffff8800686875c8 (0xffff8800686875c8)
> ffff8800686874b8: ffffffff83dd4581 (ip6_mtu+0x231/0x560)
> ffff8800686874c0: 0000000041b58ab3 (0x41b58ab3)
> ffff8800686874c8: ffffffff856f5be8 (_fw_yam_9600_bin_name+0x37550/0x5f2d0)
> ffff8800686874d0: ffffffff83dd4350 (ip6_dst_destroy+0x540/0x540)
> ffff8800686874d8: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff8800686874e0: ffffffff00010000 (0xffffffff00010000)
> ffff8800686874e8: ffffed000c83a93c (0xffffed000c83a93c)
> ffff8800686874f0: 0000000000000000 ...
> ffff8800686874f8: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff880068687500: ffff880068687550 (0xffff880068687550)
> ffff880068687508: 1ffff1000d0d0ea8 (0x1ffff1000d0d0ea8)
> ffff880068687510: 1ffff1000d0d0eab (0x1ffff1000d0d0eab)
> ffff880068687518: 00000000fffffe01 (0xfffffe01)
> ffff880068687520: ffffffff00010027 (0xffffffff00010027)
> ffff880068687528: 0000000000000000 ...
> ffff880068687530: ffff880068687aa0 (0xffff880068687aa0)
> ffff880068687538: ffff880068687548 (0xffff880068687548)
> ffff880068687540: ffffffff8141fffd (trace_hardirqs_on+0xd/0x10)
> ffff880068687548: ffff880068687690 (0xffff880068687690)
> ffff880068687550: ffffffff812dec99 (__local_bh_enable_ip+0x139/0x1e0)
> ffff880068687558: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687560: ffff880068070900 (0xffff880068070900)
> ffff880068687568: ffffffff812deb60 (do_softirq.part.17+0x230/0x230)
> ffff880068687570: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff880068687578: ffffffff81418806 (__lock_is_held+0x76/0x140)
> ffff880068687580: ffff8800686875f0 (0xffff8800686875f0)
> ffff880068687588: ffff8800686877b0 (0xffff8800686877b0)
> ffff880068687590: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687598: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff8800686875a0: ffff880065b41188 (0xffff880065b41188)
> ffff8800686875a8: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff8800686875b0: ffff88006afc2ff8 (0xffff88006afc2ff8)
> ffff8800686875b8: ffffffff85d42400 (init_net+0x8c0/0x1e60)
> ffff8800686875c0: ffff880065b40d00 (0xffff880065b40d00)
> ffff8800686875c8: ffff880068687640 (0xffff880068687640)
> ffff8800686875d0: ffffffff83d7f8da (ip6_setup_cork+0xc5a/0x1200)
> ffff8800686875d8: ffff880068687610 (0xffff880068687610)
> ffff8800686875e0: ffff880065b40d00 (0xffff880065b40d00)
> ffff8800686875e8: ffff880068687a04 (0xffff880068687a04)
> ffff8800686875f0: ffff880065b40f50 (0xffff880065b40f50)
> ffff8800686875f8: ffff880065b41188 (0xffff880065b41188)
> ffff880068687600: 0000000000000000 ...
> ffff880068687608: ffff8800686876a0 (0xffff8800686876a0)
> ffff880068687610: ffffffff83d83ee9 (ip6_append_data+0x189/0x290)
> ffff880068687618: ffffffff83e1cfd0 (rawv6_mh_filter_unregister+0xb0/0xb0)
> ffff880068687620: ffff8800686879c0 (0xffff8800686879c0)
> ffff880068687628: 0000000000000ffc (0xffc)
> ffff880068687630: 0000000000000000 ...
> ffff880068687638: 0000000000000800 (0x800)
> ffff880068687640: ffff880068687a04 (0xffff880068687a04)
> ffff880068687648: ffff8800686878c0 (0xffff8800686878c0)
> ffff880068687650: ffff8800641d5350 (0xffff8800641d5350)
> ffff880068687658: ffff880065b412c0 (0xffff880065b412c0)
> ffff880068687660: ffff8800686879c0 (0xffff8800686879c0)
> ffff880068687668: ffffffff83e1cfd0 (rawv6_mh_filter_unregister+0xb0/0xb0)
> ffff880068687670: 00000ffc65b40d88 (0xffc65b40d88)
> ffff880068687678: ffff880065b40d00 (0xffff880065b40d00)
> ffff880068687680: ffff880068687b00 (0xffff880068687b00)
> ffff880068687688: 0000000000000800 (0x800)
> ffff880068687690: ffffed000d0d0f10 (0xffffed000d0d0f10)
> ffff880068687698: ffff880068687aa0 (0xffff880068687aa0)
> ffff8800686876a0: ffff880068687bb0 (0xffff880068687bb0)
> ffff8800686876a8: ffffffff83e21f82 (rawv6_sendmsg+0x1ff2/0x43e0)
> ffff8800686876b0: ffff880068687b00 (0xffff880068687b00)
> ffff8800686876b8: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff8800686876c0: 0000000000000800 (0x800)
> ffff8800686876c8: ffff8800686878c0 (0xffff8800686878c0)
> ffff8800686876d0: ffff8800641d49e8 (0xffff8800641d49e8)
> ffff8800686876d8: ffff880065b4100c (0xffff880065b4100c)
> ffff8800686876e0: 0000000000000000 ...
> ffff8800686876e8: ffff880068687e08 (0xffff880068687e08)
> ffff8800686876f0: 1ffff1000d0d0eec (0x1ffff1000d0d0eec)
> ffff8800686876f8: ffff880065b40d12 (0xffff880065b40d12)
> ffff880068687700: 0000000000000000 ...
> ffff880068687708: ffff88006868ff80 (0xffff88006868ff80)
> ffff880068687710: ffff880065b41170 (0xffff880065b41170)
> ffff880068687718: 0000000000000ffc (0xffc)
> ffff880068687720: 0000000000000000 ...
> ffff880068687728: ffff880068687980 (0xffff880068687980)
> ffff880068687730: ffff880068687880 (0xffff880068687880)
> ffff880068687738: ffff8800686878c0 (0xffff8800686878c0)
> ffff880068687740: ffff8800686879c0 (0xffff8800686879c0)
> ffff880068687748: ffff880000000800 (0xffff880000000800)
> ffff880068687750: ffff880068687a00 (0xffff880068687a00)
> ffff880068687758: ffff880068687dc0 (0xffff880068687dc0)
> ffff880068687760: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687768: ffffffff856f61f0 (_fw_yam_9600_bin_name+0x37b58/0x5f2d0)
> ffff880068687770: ffffffff83e1ff90 (rawv6_bind+0x8c0/0x8c0)
> ffff880068687778: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687780: ffffffff85629bc0 (__func__.52646+0x253e20/0x2e8860)
> ffff880068687788: ffffffff81425500 (lock_downgrade+0x7c0/0x7c0)
> ffff880068687790: ffffffff00000001 (0xffffffff00000001)
> ffff880068687798: ffff880000000000 (0xffff880000000000)
> ffff8800686877a0: 0000000000000a06 (0xa06)
> ffff8800686877a8: ffff88006bba6b58 (0xffff88006bba6b58)
> ffff8800686877b0: ffff88006bba6b58 (0xffff88006bba6b58)
> ffff8800686877b8: ffff880068687930 (0xffff880068687930)
> ffff8800686877c0: 1ffff1000d0d0f06 (0x1ffff1000d0d0f06)
> ffff8800686877c8: ffff880066fc00f8 (0xffff880066fc00f8)
> ffff8800686877d0: ffff88006592a000 (0xffff88006592a000)
> ffff8800686877d8: ffff8800686877f0 (0xffff8800686877f0)
> ffff8800686877e0: ffffffff84da2ac2 (_raw_spin_unlock+0x22/0x30)
> ffff8800686877e8: ffff880068687890 (0xffff880068687890)
> ffff8800686877f0: ffff880068687958 (0xffff880068687958)
> ffff8800686877f8: ffffffff817ed424 (__handle_mm_fault+0x8b4/0x1bd0)
> ffff880068687800: ffffffff641d5500 (0xffffffff641d5500)
> ffff880068687808: 80000000061e5025 (0x80000000061e5025)
> ffff880068687810: 80000000061e5225 (0x80000000061e5225)
> ffff880068687818: ffff880066fc0138 (0xffff880066fc0138)
> ffff880068687820: 0000000000000000 ...
> ffff880068687828: ffff880000000000 (0xffff880000000000)
> ffff880068687830: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687838: ffffffff85648034 (__func__.52646+0x272294/0x2e8860)
> ffff880068687840: ffffffff817ecb70 (__pmd_alloc+0x330/0x330)
> ffff880068687848: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff880068687850: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff880068687858: ffff8800641d49e0 (0xffff8800641d49e0)
> ffff880068687860: ffffffff8590b020 (rcu_callback_map+0x40/0x40)
> ffff880068687868: 1ffff1000d0d0f15 (0x1ffff1000d0d0f15)
> ffff880068687870: ffff8800686879c8 (0xffff8800686879c8)
> ffff880068687878: 0000000000000806 (0x806)
> ffff880068687880: ffff88006afc2fc0 (0xffff88006afc2fc0)
> ffff880068687888: 0000000000000000 ...
> ffff880068687890: ffff880066fc00f8 (0xffff880066fc00f8)
> ffff880068687898: 014000c000000014 (0x14000c000000014)
> ffff8800686878a0: 0000000000020000 (0x20000)
> ffff8800686878a8: 0000000020000000 (0x20000000)
> ffff8800686878b0: ffff880069b6d800 (0xffff880069b6d800)
> ffff8800686878b8: ffff880064ca2000 (0xffff880064ca2000)
> ffff8800686878c0: 0000000000000000 ...
> ffff8800686878e0: ffff88006592a000 (0xffff88006592a000)
> ffff8800686878e8: ffff88006bba6b58 (0xffff88006bba6b58)
> ffff8800686878f0: 0000000000000000 ...
> ffff8800686878f8: ffffffff8140e714 (down_read_trylock+0xe4/0x170)
> ffff880068687900: 0000000000000000 ...
> ffff880068687908: ffff880068687970 (0xffff880068687970)
> ffff880068687910: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687918: 0000000000000000 ...
> ffff880068687920: ffffffff8140e630 (downgrade_write+0x140/0x140)
> ffff880068687928: ffffffff817d0a09 (vmacache_find+0x59/0x260)
> ffff880068687930: ffff880066fc00f8 (0xffff880066fc00f8)
> ffff880068687938: ffff88006724c200 (0xffff88006724c200)
> ffff880068687940: 0000000000000014 (0x14)
> ffff880068687948: 0000000020000fe4 (0x20000fe4)
> ffff880068687950: 0000000000000071 (0x71)
> ffff880068687958: ffff88006724c2b0 (0xffff88006724c2b0)
> ffff880068687960: ffff880068687b88 (0xffff880068687b88)
> ffff880068687968: ffff88006724c200 (0xffff88006724c200)
> ffff880068687970: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687978: 0000000000000000 ...
> ffff880068687980: ffff880068687998 (0xffff880068687998)
> ffff880068687988: ffffffff8140e3da (up_read+0x1a/0x40)
> ffff880068687990: 0000000000000000 ...
> ffff880068687998: ffff880068687a08 (0xffff880068687a08)
> ffff8800686879a0: 1ffff1000d0d0f3b (0x1ffff1000d0d0f3b)
> ffff8800686879a8: ffff8800641d4200 (0xffff8800641d4200)
> ffff8800686879b0: ffffffff84da41a4 (retint_kernel+0x10/0x10)
> ffff8800686879b8: 1ffff1000d0d0f57 (0x1ffff1000d0d0f57)
> ffff8800686879c0: ffff880068687dc0 (0xffff880068687dc0)
> ffff8800686879c8: ffff880000000000 (0xffff880000000000)
> ffff8800686879d0: ffffffff8141fe0b (trace_hardirqs_on_caller+0x4cb/0x6b0)
> ffff8800686879d8: 0000000041b58ab3 (0x41b58ab3)
> ffff8800686879e0: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff8800686879e8: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff8800686879f0: dffffc0000000000 (0xdffffc0000000000)
> ffff8800686879f8: 0000000000000000 ...
> ffff880068687a00: 0000000000000040 (0x40)
> ffff880068687a08: 0000000000000000 ...
> ffff880068687a10: ffffffff8128d878 (trace_do_page_fault+0x108/0x610)
> ffff880068687a18: ffffffff85635c50 (__func__.52646+0x25feb0/0x2e8860)
> ffff880068687a20: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687a28: ffffffff85618c08 (__func__.52646+0x242e68/0x2e8860)
> ffff880068687a30: ffffffff8128d770 (do_page_fault+0x30/0x30)
> ffff880068687a38: 00007ffe947ea7c0 (0x7ffe947ea7c0)
> ffff880068687a40: 00007ffe947ea7c0 (0x7ffe947ea7c0)
> ffff880068687a48: ffffffff861f5740 (fx_sw_reserved_ia32+0x60/0x60)
> ffff880068687a50: ffff880068687a60 (0xffff880068687a60)
> ffff880068687a58: ffffffff8187aa11 (kasan_check_read+0x11/0x20)
> ffff880068687a60: ffffffff8130cad3 (copy_siginfo_to_user+0x493/0xa30)
> ffff880068687a68: ffffffff81205caa (copy_fpstate_to_sigframe+0x2da/0x460)
> ffff880068687a70: 1ffff1000d0d0f63 (0x1ffff1000d0d0f63)
> ffff880068687a78: ffff880068687bf8 (0xffff880068687bf8)
> ffff880068687a80: 0000000000000000 ...
> ffff880068687a88: ffff880068687cd8 (0xffff880068687cd8)
> ffff880068687a90: 00007ffe947ea728 (0x7ffe947ea728)
> ffff880068687a98: ffff880068687d00 (0xffff880068687d00)
> ffff880068687aa0: ffffffff811dc37d (do_signal+0x115d/0x2130)
> ffff880068687aa8: ffffffff86ea6d40 (console_drivers+0x40/0x40)
> ffff880068687ab0: ffff88006724c310 (0xffff88006724c310)
> ffff880068687ab8: 00007ffe947ea600 (0x7ffe947ea600)
> ffff880068687ac0: ffff880068687fe0 (0xffff880068687fe0)
> ffff880068687ac8: ffff8800641d4878 (0xffff8800641d4878)
> ffff880068687ad0: ffff880068687f58 (0xffff880068687f58)
> ffff880068687ad8: 00007ffe947ea5f8 (0x7ffe947ea5f8)
> ffff880068687ae0: ffff880068687ff0 (0xffff880068687ff0)
> ffff880068687ae8: ffff8800641d4878 (0xffff8800641d4878)
> ffff880068687af0: 0000000000000001 (0x1)
> ffff880068687af8: 0000000000000001 (0x1)
> ffff880068687b00: 0000000100000000 (0x100000000)
> ffff880068687b08: 0084000000000000 (0x84000000000000)
> ffff880068687b10: 0000000000000001 (0x1)
> ffff880068687b18: 0000000000000000 ...
> ffff880068687b30: 0100000000000000 (0x100000000000000)
> ffff880068687b38: 0000000000000000 ...
> ffff880068687b40: 0100000000000000 (0x100000000000000)
> ffff880068687b48: 0000000000000000 ...
> ffff880068687b50: dffffc0000000020 (0xdffffc0000000020)
> ffff880068687b58: 0000000000000000 ...
> ffff880068687b68: 0000000000000001 (0x1)
> ffff880068687b70: ffff8800641d47b0 (0xffff8800641d47b0)
> ffff880068687b78: ffff880068687b89 (0xffff880068687b89)
> ffff880068687b80: ffff880065b40d00 (0xffff880065b40d00)
> ffff880068687b88: ffff880068687bd0 (0xffff880068687bd0)
> ffff880068687b90: 1ffff1000d0d0f7d (0x1ffff1000d0d0f7d)
> ffff880068687b98: ffffffff85de6780 (raw6_net_ops+0x60/0x60)
> ffff880068687ba0: 0000000000000ffc (0xffc)
> ffff880068687ba8: ffff880065b40d28 (0xffff880065b40d28)
> ffff880068687bb0: ffff880068687c70 (0xffff880068687c70)
> ffff880068687bb8: ffffffff83bbb144 (inet_sendmsg+0x164/0x5b0)
> ffff880068687bc0: 0000000000000000 ...
> ffff880068687bc8: ffffffff83bbb144 (inet_sendmsg+0x164/0x5b0)
> ffff880068687bd0: ffffed000d0d0fcc (0xffffed000d0d0fcc)
> ffff880068687bd8: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687be0: ffff880068687dc0 (0xffff880068687dc0)
> ffff880068687be8: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687bf0: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff880068687bf8: ffffffff83bbafe0 (inet_recvmsg+0x600/0x600)
> ffff880068687c00: ffff880065dba640 (0xffff880065dba640)
> ffff880068687c08: ffff880068687dc0 (0xffff880068687dc0)
> ffff880068687c10: 0000000000000ffc (0xffc)
> ffff880068687c18: ffff880068687c30 (0xffff880068687c30)
> ffff880068687c20: ffffffff81ea5576 (selinux_socket_sendmsg+0x36/0x40)
> ffff880068687c28: ffffffff85a33d68 (selinux_hooks+0x14c8/0x1aa0)
> ffff880068687c30: ffff880068687c70 (0xffff880068687c70)
> ffff880068687c38: ffffffff81e9c379 (security_socket_sendmsg+0x89/0xb0)
> ffff880068687c40: 0000000020001000 (0x20001000)
> ffff880068687c48: ffff880068687dc0 (0xffff880068687dc0)
> ffff880068687c50: ffffffff83bbafe0 (inet_recvmsg+0x600/0x600)
> ffff880068687c58: ffff880065dba640 (0xffff880065dba640)
> ffff880068687c60: ffff880068687de0 (0xffff880068687de0)
> ffff880068687c68: ffff880065dba640 (0xffff880065dba640)
> ffff880068687c70: ffff880068687ca0 (0xffff880068687ca0)
> ffff880068687c78: ffffffff8341a35a (sock_sendmsg+0xca/0x110)
> ffff880068687c80: ffff880068687dc0 (0xffff880068687dc0)
> ffff880068687c88: ffff880068687ee0 (0xffff880068687ee0)
> ffff880068687c90: ffff880068687d00 (0xffff880068687d00)
> ffff880068687c98: ffff880068687d40 (0xffff880068687d40)
> ffff880068687ca0: ffff880068687f08 (0xffff880068687f08)
> ffff880068687ca8: ffffffff8341c930 (SYSC_sendto+0x660/0x810)
> ffff880068687cb0: 0000000020000fe4 (0x20000fe4)
> ffff880068687cb8: 0000080068687d28 (0x80068687d28)
> ffff880068687cc0: ffffffff00000003 (0xffffffff00000003)
> ffff880068687cc8: 1ffff1000d0d0f9c (0x1ffff1000d0d0f9c)
> ffff880068687cd0: ffffed000000001c (0xffffed000000001c)
> ffff880068687cd8: ffff880068687e40 (0xffff880068687e40)
> ffff880068687ce0: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687ce8: ffffffff856db550 (_fw_yam_9600_bin_name+0x1ceb8/0x5f2d0)
> ffff880068687cf0: ffffffff8341c2d0 (SYSC_connect+0x590/0x590)
> ffff880068687cf8: ffffffff81412cad (trace_hardirqs_off+0xd/0x10)
> ffff880068687d00: ffff880000000000 (0xffff880000000000)
> ffff880068687d08: ffffffff81003d33 (exit_to_usermode_loop+0x193/0x210)
> ffff880068687d10: ffff880068687f58 (0xffff880068687f58)
> ffff880068687d18: 1ffff1000d0d0fa5 (0x1ffff1000d0d0fa5)
> ffff880068687d20: ffff880068687f58 (0xffff880068687f58)
> ffff880068687d28: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687d30: ffffffff8560ef1b (__func__.52646+0x23917b/0x2e8860)
> ffff880068687d38: ffffffff81003ba0 (trace_raw_output_sys_exit+0x1a0/0x1a0)
> ffff880068687d40: 0000000000000000 ...
> ffff880068687d50: ffff88006724c200 (0xffff88006724c200)
> ffff880068687d58: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687d60: 0000000000000000 ...
> ffff880068687d68: ffff880068687dd8 (0xffff880068687dd8)
> ffff880068687d70: 1ffff1000d0d0fb5 (0x1ffff1000d0d0fb5)
> ffff880068687d78: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687d80: 0000000020004000 (0x20004000)
> ffff880068687d88: 0000000000000ffc (0xffc)
> ffff880068687d90: dffffc0000000000 (0xdffffc0000000000)
> ffff880068687d98: ffff880068687ef0 (0xffff880068687ef0)
> ffff880068687da0: ffffffff8141fe0b (trace_hardirqs_on_caller+0x4cb/0x6b0)
> ffff880068687da8: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687db0: ffffffff85618d30 (__func__.52646+0x242f90/0x2e8860)
> ffff880068687db8: ffffffff8141f940 (mark_held_locks+0x100/0x100)
> ffff880068687dc0: ffff880068687e40 (0xffff880068687e40)
> ffff880068687dc8: ffffffff0000001c (0xffffffff0000001c)
> ffff880068687dd0: ffffffff00000001 (0xffffffff00000001)
> ffff880068687dd8: 0000000000000000 ...
> ffff880068687de0: 0000000000000ffc (0xffc)
> ffff880068687de8: ffff880068687d80 (0xffff880068687d80)
> ffff880068687df0: 0000000000000001 (0x1)
> ffff880068687df8: 0000000000000000 ...
> ffff880068687e08: ffff880000000800 (0xffff880000000800)
> ffff880068687e10: ffff880068687e10 (0xffff880068687e10)
> ffff880068687e18: ffff880068687e10 (0xffff880068687e10)
> ffff880068687e20: ffff8800641d4200 (0xffff8800641d4200)
> ffff880068687e28: 0000000000000003 (0x3)
> ffff880068687e30: ffff880066030200 (0xffff880066030200)
> ffff880068687e38: ffff880068687f20 (0xffff880068687f20)
> ffff880068687e40: 0000000000000000 ...
> ffff880068687e58: ffffffff00000000 (0xffffffff00000000)
> ffff880068687e60: ffffffff81412900 (trace_raw_output_lock+0x190/0x190)
> ffff880068687e68: 0000000000001000 (0x1000)
> ffff880068687e70: 0000000000000000 ...
> ffff880068687e78: ffff880068687f38 (0xffff880068687f38)
> ffff880068687e80: ffffffff81801ee4 (SyS_mmap_pgoff+0x234/0x5e0)
> ffff880068687e88: 1ffff1000d0d0fd8 (0x1ffff1000d0d0fd8)
> ffff880068687e90: ffffffffffffffff (0xffffffffffffffff)
> ffff880068687e98: 0000000000001000 (0x1000)
> ffff880068687ea0: 0000000000000003 (0x3)
> ffff880068687ea8: 0000000020004000 (0x20004000)
> ffff880068687eb0: 0000000041b58ab3 (0x41b58ab3)
> ffff880068687eb8: ffffffff856480cd (__func__.52646+0x27232d/0x2e8860)
> ffff880068687ec0: 0000000000000000 ...
> ffff880068687ed0: 0000000000400ff0 (0x400ff0)
> ffff880068687ed8: 00007ffe947eacd0 (0x7ffe947eacd0)
> ffff880068687ee0: 0000000000000003 (0x3)
> ffff880068687ee8: 0000000020004000 (0x20004000)
> ffff880068687ef0: 0000000000000ffc (0xffc)
> ffff880068687ef8: 0000000000000800 (0x800)
> ffff880068687f00: 000000000000001c (0x1c)
> ffff880068687f08: ffff880068687f48 (0xffff880068687f48)
> ffff880068687f10: ffffffff8341f0c0 (SyS_sendto+0x40/0x50)
> ffff880068687f18: 0000000020000fe4 (0x20000fe4)
> ffff880068687f20: 0000000000000000 ...
> ffff880068687f28: 0000000000400ff0 (0x400ff0)
> ffff880068687f30: 00007ffe947eacd0 (0x7ffe947eacd0)
> ffff880068687f38: 0000000000000000 ...
> ffff880068687f48: 00007ffe947eaa40 (0x7ffe947eaa40)
> ffff880068687f50: ffffffff84da37c1 (entry_SYSCALL_64_fastpath+0x1f/0xbe)
> ffff880068687f58: 0000000000000000 ...
> ffff880068687f68: 00007ffe947eacd0 (0x7ffe947eacd0)
> ffff880068687f70: 0000000000000000 ...
> ffff880068687f78: 0000000000400ff0 (0x400ff0)
> ffff880068687f80: 00007ffe947eacd0 (0x7ffe947eacd0)
> ffff880068687f88: 0000000000000206 (0x206)
> ffff880068687f90: 0000000000000800 (0x800)
> ffff880068687f98: 000000000000001c (0x1c)
> ffff880068687fa0: 0000000020000fe4 (0x20000fe4)
> ffff880068687fa8: ffffffffffffffda (0xffffffffffffffda)
> ffff880068687fb0: 00007fccf21c6b79 (0x7fccf21c6b79)
> ffff880068687fb8: 0000000000000ffc (0xffc)
> ffff880068687fc0: 0000000020004000 (0x20004000)
> ffff880068687fc8: 0000000000000003 (0x3)
> ffff880068687fd0: 000000000000002c (0x2c)
> ffff880068687fd8: 00007fccf21c6b79 (0x7fccf21c6b79)
> ffff880068687fe0: 0000000000000033 (0x33)
> ffff880068687fe8: 0000000000000206 (0x206)
> ffff880068687ff0: 00007ffe947ea9f8 (0x7ffe947ea9f8)
> ffff880068687ff8: 000000000000002b (0x2b)

// autogenerated by syzkaller (http://github.com/google/syzkaller)

#ifndef __NR_mmap
#define __NR_mmap 9
#endif
#ifndef __NR_socket
#define __NR_socket 41
#endif
#ifndef __NR_sendto
#define __NR_sendto 44
#endif

#define _GNU_SOURCE

#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>

#include <arpa/inet.h>
#include <linux/capability.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/ip.h>
#include <linux/kvm.h>
#include <linux/sched.h>
#include <linux/tcp.h>
#include <net/if_arp.h>

#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <pthread.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

const int kFailStatus = 67;
const int kErrorStatus = 68;
const int kRetryStatus = 69;

__attribute__((noreturn)) void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}

__attribute__((noreturn)) void fail(const char* msg, ...)
{
  int e = errno;
  fflush(stdout);
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

__attribute__((noreturn)) void exitf(const char* msg, ...)
{
  int e = errno;
  fflush(stdout);
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit(kRetryStatus);
}

static int flag_debug;

void debug(const char* msg, ...)
{
  if (!flag_debug)
    return;
  va_list args;
  va_start(args, msg);
  vfprintf(stdout, msg, args);
  va_end(args);
  fflush(stdout);
}

__thread int skip_segv;
__thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* uctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    debug("SIGSEGV on %p, skipping\n", addr);
    _longjmp(segv_env, 1);
  }
  debug("SIGSEGV on %p, exiting\n", addr);
  doexit(sig);
  for (;;) {
  }
}

static void install_segv_handler()
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                \
  {                                                                    \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
    if (_setjmp(segv_env) == 0) {                                      \
      __VA_ARGS__;                                                     \
    }                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
  }

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                          \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)              \
  if ((bf_off) == 0 && (bf_len) == 0) {                                \
    *(type*)(addr) = (type)(val);                                      \
  } else {                                                             \
    type new_val = *(type*)(addr);                                     \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));             \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);  \
    *(type*)(addr) = new_val;                                          \
  }

struct csum_inet {
  uint32_t acc;
};

void csum_inet_init(struct csum_inet* csum)
{
  csum->acc = 0;
}

void csum_inet_update(struct csum_inet* csum, const uint8_t* data,
                      size_t length)
{
  if (length == 0)
    return;

  size_t i;
  for (i = 0; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];

  if (length & 1)
    csum->acc += (uint16_t)data[length - 1];

  while (csum->acc > 0xffff)
    csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16);
}

uint16_t csum_inet_digest(struct csum_inet* csum)
{
  return ~csum->acc;
}

static uintptr_t execute_syscall(int nr, uintptr_t a0, uintptr_t a1,
                                 uintptr_t a2, uintptr_t a3,
                                 uintptr_t a4, uintptr_t a5,
                                 uintptr_t a6, uintptr_t a7,
                                 uintptr_t a8)
{
  switch (nr) {
  default:
    return syscall(nr, a0, a1, a2, a3, a4, a5);
  }
}

static void setup_main_process()
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  install_segv_handler();

  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();

  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);

  unshare(CLONE_NEWNS);
  unshare(CLONE_NEWIPC);
  unshare(CLONE_IO);
}

static int do_sandbox_none(int executor_pid, bool enable_tun)
{
  int pid = fork();
  if (pid)
    return pid;

  sandbox_common();

  loop();
  doexit(1);
}

static void remove_dir(const char* dir)
{
  DIR* dp;
  struct dirent* ep;
  int iter = 0;
retry:
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exitf("opendir(%s) failed due to NOFILE, exiting");
    }
    exitf("opendir(%s) failed", dir);
  }
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    struct stat st;
    if (lstat(filename, &st))
      exitf("lstat(%s) failed", filename);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      debug("unlink(%s)\n", filename);
      if (unlink(filename) == 0)
        break;
      if (errno == EROFS) {
        debug("ignoring EROFS\n");
        break;
      }
      if (errno != EBUSY || i > 100)
        exitf("unlink(%s) failed", filename);
      debug("umount(%s)\n", filename);
      if (umount2(filename, MNT_DETACH))
        exitf("umount(%s) failed", filename);
    }
  }
  closedir(dp);
  int i;
  for (i = 0;; i++) {
    debug("rmdir(%s)\n", dir);
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EROFS) {
        debug("ignoring EROFS\n");
        break;
      }
      if (errno == EBUSY) {
        debug("umount(%s)\n", dir);
        if (umount2(dir, MNT_DETACH))
          exitf("umount(%s) failed", dir);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exitf("rmdir(%s) failed", dir);
  }
}

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void test();

void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    char cwdbuf[256];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      fail("failed to mkdir");
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      if (chdir(cwdbuf))
        fail("failed to chdir");
      test();
      doexit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid)
        break;
      usleep(1000);
      if (current_time_ms() - start > 5 * 1000) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
    remove_dir(cwdbuf);
  }
}

long r[24];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = execute_syscall(__NR_mmap, 0x20000000ul, 0x78c000ul, 0x3ul,
                         0x32ul, 0xfffffffffffffffful, 0x0ul, 0, 0, 0);
  r[1] = execute_syscall(__NR_socket, 0xaul, 0x2ul, 0x0ul, 0, 0, 0, 0,
                         0, 0);
  NONFAILING(memcpy(
      (void*)0x203dd000,
      "\x66\xda\xab\xe3\x3e\xc8\xa2\xe6\x54\x10\xa0\xa0\x1e\x75\xd8\xb1"
      "\xa8\x8a\x52\xfb\xbe\x2d\x35\x39\xd1\x74\x82\x3a\xa7\xa2\xdc\x62"
      "\x45\x23\x3a\xf8\x16\x88\x78\xd7\x6c\x9d\xf0\x5b\x80\x6a\x9d\xa3"
      "\x53\x73\x85\xce\xd6\x53\xc2\x6d\xb1\xca\x0d\xac\x9b\x3a\x9f\xb2"
      "\x30\x51\x91\xab\x2d\x5f\xe7\xce\x2a\x9b\x81\x13\xd6\x17\x6f\x10"
      "\x28\xe6\x58\x57\xa8\x73\xcd\x5b\x42\xd5\xaa\x23\x62\x23\xe9\x90"
      "\x98\x5a\x16\xab\x38\xeb\xac\x90\x37\x4a\xdb\x48\xa2\xf3\x92\x36"
      "\xaf\xe1\xc7\xbc\x8f\x81\xc2\xc6\x2c\xd3\x70\x12\xdb\xfc\xc8\x0a"
      "\x1f\xa7\xeb\x85\x73\x31\x50\x30\x2e\x80\xd3\x1a\x12\xe0\xeb\xf3"
      "\x8d\x1d\x59\xc5\x7e\xdf\x06\x99\x73\xc0\xd2\xed\xdc\xf5\xa4\xff"
      "\x39\x47\xc9\x66\x9a\x8f\x54\xbd\x1f\xd6\xe0\x91\x11\x72\x26",
      175));
  NONFAILING(*(uint16_t*)0x203acfe4 = (uint16_t)0xa);
  NONFAILING(*(uint16_t*)0x203acfe6 = (uint16_t)0x234e);
  NONFAILING(*(uint32_t*)0x203acfe8 = (uint32_t)0x8);
  NONFAILING(*(uint8_t*)0x203acfec = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acfed = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acfee = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acfef = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff0 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff1 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff2 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff3 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff4 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff5 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff6 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff7 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff8 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acff9 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acffa = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x203acffb = (uint8_t)0x0);
  NONFAILING(*(uint32_t*)0x203acffc = (uint32_t)0x145bfe);
  r[23] = execute_syscall(__NR_sendto, r[1], 0x203dd000ul, 0xaful,
                          0x8880ul, 0x203acfe4ul, 0x1cul, 0, 0, 0);
}
int main()
{
  setup_main_process();
  int pid = do_sandbox_none(0, false);
  int status = 0;
  while (waitpid(pid, &status, __WALL) != pid) {
  }
  return 0;
}