binder_alloc: binder_alloc_mmap_handler: 5712 20000000-20002000 already mapped failed -16
INFO: task syz-executor0:5671 blocked for more than 120 seconds.
      Not tainted 4.4.118-g5f7f76a #24
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor0   D ffff8801c75a7ad8 29736  5671   3839 0x00000004
 ffff8801c75a7ad8 ffff8801c75a7a70 ffffffff837647a5 ffff8801c75a7ae0
 ffffffff81003058 0000000000000000 ffff8801db31fdb8 ffff8801db31fde0
 ffff8801db31f4d8 ffff8800baca4800 ffff8801c8690000 0000000000000000
Call Trace:
 [<ffffffff8376491a>] schedule+0x7a/0x1b0 kernel/sched/core.c:3353
 [<ffffffff82df4161>] __lock_sock+0xf1/0x180 net/core/sock.c:1999
 [<ffffffff82df42e6>] lock_sock_nested+0xf6/0x120 net/core/sock.c:2453
 [<ffffffff833fe486>] lock_sock include/net/sock.h:1493 [inline]
 [<ffffffff833fe486>] ipv6_getorigdst+0x136/0x610 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c:238
 [<ffffffff82f9680a>] nf_sockopt net/netfilter/nf_sockopt.c:103 [inline]
 [<ffffffff82f9680a>] nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:121
 [<ffffffff833595be>] ipv6_getsockopt+0x1ce/0x250 net/ipv6/ipv6_sockglue.c:1344
 [<ffffffff831194d2>] tcp_getsockopt+0x82/0xd0 net/ipv4/tcp.c:2945
 [<ffffffff82df1b45>] sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2618
 [<ffffffff82def27a>] SYSC_getsockopt net/socket.c:1798 [inline]
 [<ffffffff82def27a>] SyS_getsockopt+0x14a/0x230 net/socket.c:1780
 [<ffffffff83772a5f>] entry_SYSCALL_64_fastpath+0x1c/0x98
1 lock held by syz-executor0/5671:
 #0:  (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff833595a3>] lock_sock include/net/sock.h:1493 [inline]
 #0:  (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff833595a3>] ipv6_getsockopt+0x1b3/0x250 net/ipv6/ipv6_sockglue.c:1343
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 485 Comm: khungtaskd Not tainted 4.4.118-g5f7f76a #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bac46000 task.stack: ffff8800bb3f8000
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] native_apic_mem_write arch/x86/include/asm/apic.h:94 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] flat_send_IPI_mask+0xf7/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8800bb3ffcb8  EFLAGS: 00000046
RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300
RBP: ffff8800bb3ffce0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000000000003 R14: ffffffff8426f420 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffb8715418 CR3: 00000001d384c000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff8426f420 ffffffff847ef9c0 fffffbfff08fd9ec dffffc0000000000
 ffff8801db31bca0 ffff8800bb3ffd00 ffffffff810b999b ffffffff839f63c0
 0000000000000003 ffff8800bb3ffd60 ffffffff81d0ef94 ffffffff8141b013
Call Trace:
 [<ffffffff810b999b>] nmi_raise_cpu_backtrace+0x5b/0x70 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81d0ef94>] nmi_trigger_all_cpu_backtrace+0x4a4/0x550 lib/nmi_backtrace.c:85
 [<ffffffff810b9a34>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff81368c5a>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff81368c5a>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81368c5a>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81368c5a>] watchdog+0x6fa/0xae0 kernel/hung_task.c:238
 [<ffffffff81190788>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff83772e85>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:506
Code: b3 5f ff f6 c4 10 75 e1 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 1a e8 6b 2f 17 00 4c 89 e7 57 9d 0f 1f 
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.118-g5f7f76a #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d9b49800 task.stack: ffff8801d9b58000
RIP: 0010:[<ffffffff81360d10>]  [<ffffffff81360d10>] __sanitizer_cov_trace_pc+0x0/0x50
RSP: 0018:ffff8801d9b5fcd0  EFLAGS: 00000002
RAX: 0000000000000000 RBX: 1ffff1003b36bf9d RCX: ffffffff812acf9a
RDX: 0000000000000000 RSI: ffff8801d9b4a0d0 RDI: ffff8801db319c78
RBP: ffff8801d9b5fd70 R08: 0000000000000001 R09: ffffffff851409b0
R10: 0000000000000001 R11: 1ffff1003b36bf58 R12: ffff8801db319c40
R13: ffff8801db319c70 R14: 0000000000000000 R15: ffff8801db319640
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb855eb73c0 CR3: 00000001d384c000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff812acfda ffff8801db31fe88 ffff8801db319700 0000000041b58ab3
 ffffffff83faa3c3 ffffffff812ace60 000000000000000f 0000000000000092
 00000000811d711e 0000000000000046 ffff8801d9b4a0d0 ffffffff84272b00
Call Trace:
 [<ffffffff812ad4e2>] hrtimer_cancel+0x22/0x40 kernel/time/hrtimer.c:1079
 [<ffffffff812d57de>] tick_nohz_restart+0x1e/0x190 kernel/time/tick-sched.c:559
 [<ffffffff812d7837>] tick_nohz_restart_sched_tick kernel/time/tick-sched.c:726 [inline]
 [<ffffffff812d7837>] tick_nohz_idle_exit+0x247/0x3d0 kernel/time/tick-sched.c:946
 [<ffffffff81221815>] cpu_idle_loop kernel/sched/idle.c:267 [inline]
 [<ffffffff81221815>] cpu_startup_entry+0x2a5/0x8f0 kernel/sched/idle.c:301
 [<ffffffff810adc64>] start_secondary+0x304/0x3e0 arch/x86/kernel/smpboot.c:242
Code: 4c 89 e7 e8 73 da 19 00 eb b4 e8 0c db 19 00 eb 86 4c 89 ff e8 02 db 19 00 e9 64 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <55> 48 89 e5 65 48 8b 04 25 00 67 01 00 65 8b 15 6c 59 cb 7e 81