Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313339 pages reserved
INFO: task syz-executor3:12420 blocked for more than 140 seconds.
      Not tainted 4.4.154+ #97
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D ffff8801d90afdc8 29728 12420   2128 0x00000004
 ffff8801d90afdc8 0000000000000000 ffff88009f44b848 ffffed0013e89708
 ffff88009f44af00 ffff8801db61f180 ffff8801db61f1a8 ffff8801db61e898
 ffff8801db61e880 ffff8801d968c740 ffff88009f44af80 0000000000000000
Call Trace:
 [<ffffffff82683b5a>] schedule+0x7a/0x1b0 kernel/sched/core.c:3355
 [<ffffffff826842f3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3388
 [<ffffffff82686017>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff82686017>] mutex_lock_nested+0x307/0x840 kernel/locking/mutex.c:621
 [<ffffffff814cdf1c>] __fdget_pos+0xac/0xd0 fs/file.c:780
 [<ffffffff81473872>] fdget_pos fs/read_write.c:266 [inline]
 [<ffffffff81473872>] SYSC_lseek fs/read_write.c:279 [inline]
 [<ffffffff81473872>] SyS_lseek+0x22/0x180 fs/read_write.c:276
 [<ffffffff82690521>] entry_SYSCALL_64_fastpath+0x1e/0x9a
1 lock held by syz-executor3/12420:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff814cdf1c>] __fdget_pos+0xac/0xd0 fs/file.c:780
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 20 Comm: khungtaskd Not tainted 4.4.154+ #97
task: ffff8801da6c4740 task.stack: ffff8800001e0000
RIP: 0010:[<ffffffff8109a2a6>]  [<ffffffff8109a2a6>] native_apic_mem_write arch/x86/include/asm/apic.h:93 [inline]
RIP: 0010:[<ffffffff8109a2a6>]  [<ffffffff8109a2a6>] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline]
RIP: 0010:[<ffffffff8109a2a6>]  [<ffffffff8109a2a6>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline]
RIP: 0010:[<ffffffff8109a2a6>]  [<ffffffff8109a2a6>] flat_send_IPI_mask+0xf6/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8800001e7cc8  EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300
RBP: ffff8800001e7cf0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000003000000 R14: ffffffff82e5f3a0 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b66297000 CR3: 00000000b4b09000 CR4: 00000000001606b0
Stack:
 ffffffff82e5f3a0 ffffffff831a3060 0000000000000007 fffffbfff06344ec
 0000000000000008 ffff8800001e7d10 ffffffff81091931 ffffffff829209a0
 0000000000000003 ffff8800001e7d68 ffffffff81a5fa92 ffffffff81391205
Call Trace:
 [<ffffffff81091931>] nmi_raise_cpu_backtrace+0x61/0x80 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81a5fa92>] nmi_trigger_all_cpu_backtrace.cold.0+0x70/0xae lib/nmi_backtrace.c:85
 [<ffffffff810919d4>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff8139abc7>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff8139abc7>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8139abc7>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8139abc7>] watchdog.cold.0+0xd3/0xee kernel/hung_task.c:238
 [<ffffffff8112ee98>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff82690905>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1a 4c 89 e7 57 9d 0f 1f 44 00 00 e8 12 
NMI backtrace for cpu 1
CPU: 1 PID: 12409 Comm: syz-executor4 Not tainted 4.4.154+ #97
task: ffff8801cf74af80 task.stack: ffff8801d6b80000
RIP: 0010:[<ffffffff812f48ed>]  [<ffffffff812f48ed>] get_current arch/x86/include/asm/current.h:14 [inline]
RIP: 0010:[<ffffffff812f48ed>]  [<ffffffff812f48ed>] __sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:99
RSP: 0018:ffff8801d6b87e50  EFLAGS: 00000246
RAX: ffff8801cf74af80 RBX: 1ffff1003ad70fd0 RCX: 1ffff1003ad70ff3
RDX: 0000000000000000 RSI: ffffffff81004af3 RDI: ffff8801d6b87f98
RBP: ffff8801d6b87e50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffff8801d6b87f20
R13: 0000000000000100 R14: 00000000c000003e R15: ffff8801d6b87f58
FS:  00007f26cbb1e700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000222b3e0 CR3: 00000001d0bae000 CR4: 00000000001606b0
Stack:
 ffff8801d6b87f48 ffffffff81004a8e ffff8801d6b87fd0 0000000000000080
 00000000009300a8 0000000000000000 0000000041b58ab3 ffffffff82c389e0
 ffffffff810047d0 ffff8801d6b80008 c000003e000000ca 0000000000457099
Call Trace:
 [<ffffffff81004a8e>] syscall_trace_enter_phase1+0x2be/0x480 arch/x86/entry/common.c:134
 [<ffffffff826905bc>] tracesys+0xd/0x44
Code: 6a cb 16 00 eb b7 e8 03 cc 16 00 eb 89 4c 89 e7 e8 59 cb 16 00 e9 14 ff ff ff 0f 1f 40 00 55 48 89 e5 65 48 8b 04 25 80 67 01 00 <65> 8b 15 1c 1e d2 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90