INFO: task syz-executor0:22085 blocked for more than 120 seconds.
      Not tainted 4.18.0-rc3+ #103
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 901 Comm: khungtaskd Not tainted 4.18.0-rc3+ #103
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.5+0x19/0xce lib/nmi_backtrace.c:103
 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline]
 watchdog+0x9c4/0xf80 kernel/hung_task.c:252
 kthread+0x345/0x410 kernel/kthread.c:240
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4470 Comm: syz-executor3 Not tainted 4.18.0-rc3+ #103
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:update_stack_state+0x253/0x690 arch/x86/kernel/unwind_frame.c:244
Code: 00 00 00 00 fc ff df 4d 8d 7e 40 4c 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 b9 03 00 00 4d 8b 6e 40 48 39 9d 10 ff ff ff 0f 97 c1 <4d> 85 ed 0f 95 c2 84 d1 74 0c 39 85 24 ff ff ff 0f 84 69 01 00 00 
RSP: 0018:ffff8801a27cec48 EFLAGS: 00000287
RAX: 0000000000000001 RBX: ffff8801a27cfb90 RCX: 1ffff100344f9d00
RDX: dffffc0000000000 RSI: ffff8801a27cfba0 RDI: ffff8801a27cee88
RBP: ffff8801a27ced50 R08: ffff8801a27ceeb0 R09: ffff8801a27c6600
R10: ffffed00344f9dd9 R11: ffff8801a27ceecf R12: dffffc0000000000
R13: ffff8801a27cee68 R14: ffff8801a27cee78 R15: ffff8801a27ceeb8
FS:  000000000237c940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000093002d CR3: 00000001a278c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unwind_next_frame.part.7+0x1ae/0x9e0 arch/x86/kernel/unwind_frame.c:329
 unwind_next_frame+0x3e/0x50 arch/x86/kernel/unwind_frame.c:287
 __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:44
 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554
 dup_mmap kernel/fork.c:458 [inline]
 dup_mm kernel/fork.c:1243 [inline]
 copy_mm kernel/fork.c:1297 [inline]
 copy_process.part.40+0x4581/0x7220 kernel/fork.c:1803
 copy_process kernel/fork.c:1616 [inline]
 _do_fork+0x291/0x12a0 kernel/fork.c:2099
 __do_sys_clone kernel/fork.c:2206 [inline]
 __se_sys_clone kernel/fork.c:2200 [inline]
 __x64_sys_clone+0xbf/0x150 kernel/fork.c:2200
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45416a
Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 
RSP: 002b:0000000000a3ea70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000a3ea70 RCX: 000000000045416a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000a3eab0 R08: 0000000000000001 R09: 000000000237c940
R10: 000000000237cc10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000007024c0
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.329 msecs