binder: 23676:23690 ioctl c0046209 0 returned -22
binder: 23676:23680 ioctl c0046209 0 returned -22
kworker/dying (28) used greatest stack depth: 11616 bytes left
INFO: task syz-executor3:23709 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc7-next-20180803+ #31
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D26336 23709  12614 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2823 [inline]
 __schedule+0x87c/0x1ec0 kernel/sched/core.c:3471
 schedule+0xfb/0x450 kernel/sched/core.c:3515
 __rwsem_down_write_failed_common+0x98b/0x1650 kernel/locking/rwsem-xadd.c:566
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write+0xaa/0x130 kernel/locking/rwsem.c:72
 inode_lock include/linux/fs.h:763 [inline]
 utimes_common.isra.1+0x45c/0x8e0 fs/utimes.c:90
 do_utimes+0x1f7/0x380 fs/utimes.c:156
 do_futimesat+0x249/0x350 fs/utimes.c:212
 __do_sys_utimes fs/utimes.c:225 [inline]
 __se_sys_utimes fs/utimes.c:222 [inline]
 __x64_sys_utimes+0x59/0x80 fs/utimes.c:222
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x456cb9
Code: 18 85 c0 75 12 48 8b 44 24 20 48 89 08 48 8b 6c 24 28 48 83 c4 30 c3 48 8b 44 24 20 48 89 04 24 48 89 4c 24 08 e8 e7 ac fb ff <eb> e1 e8 f0 31 00 00 e9 7b ff ff ff cc cc cc cc cc cc cc cc cc cc
RSP: 002b:00007ff4434c7c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb
RAX: ffffffffffffffda RBX: 00007ff4434c86d4 RCX: 0000000000456cb9
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 00000000200000c0
RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d6450 R14: 00000000004c9b00 R15: 0000000000000002
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 774 Comm: khungtaskd Not tainted 4.18.0-rc7-next-20180803+ #31
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.3+0x48/0x88 lib/nmi_backtrace.c:101
 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:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0xb39/0x10b0 kernel/hung_task.c:265
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54