INFO: task syz-executor.2:13352 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc6+ #94
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D30024 13352   8858 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x877/0xc50 kernel/sched/core.c:3880
 schedule+0x131/0x1e0 kernel/sched/core.c:3947
 rwsem_down_write_slowpath+0x813/0xdd0 kernel/locking/rwsem.c:1214
 __down_write kernel/locking/rwsem.c:1365 [inline]
 down_write_nested+0x132/0x140 kernel/locking/rwsem.c:1597
 inode_lock_nested include/linux/fs.h:813 [inline]
 filename_create+0x12e/0x670 fs/namei.c:3634
 user_path_create fs/namei.c:3692 [inline]
 do_mkdirat+0x5a/0x320 fs/namei.c:3830
 __do_sys_mkdir fs/namei.c:3854 [inline]
 __se_sys_mkdir fs/namei.c:3852 [inline]
 __x64_sys_mkdir+0x60/0x70 fs/namei.c:3852
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: Bad RIP value.
RSP: 002b:00007faeeec96c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007faeeec976d4
R13: 00000000004bf081 R14: 00000000004da720 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1056 Comm: khungtaskd Not tainted 5.3.0-rc6+ #94
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+0x1d8/0x2f8 lib/dump_stack.c:113
 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xbb9/0xbd0 kernel/hung_task.c:289
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc6+ #94
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trace_hardirqs_off_caller+0x16/0x80 kernel/trace/trace_preemptirq.c:66
Code: 8b 7d 08 e8 4c 99 df ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 b1 79 fa ff 65 8b 1d 1a ea 89 7e <31> ff 89 de e8 41 7d fa ff 85 db 74 07 e8 98 79 fa ff eb 41 65 c7
RSP: 0018:ffff8880aea09f78 EFLAGS: 00000093
RAX: ffffffff817910ff RBX: 0000000000000000 RCX: ffffffff88875a00
RDX: 0000000000000000 RSI: ffffffff878017fa RDI: ffffffff8780094d
RBP: ffff8880aea09f88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8780094d R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a1b08000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_hardirqs_off_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:42
 interrupt_entry+0xbd/0xbe arch/x86/entry/entry_64.S:579
 </IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 30 fa eb ae 89 d9 80 e1 07 80 c1 03 38 c1 7c ba 48 89 df e8 44 eb 30 fa eb b0 90 90 e9 07 00 00 00 0f 00 2d e6 ef 46 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d d6 ef 46 00 f4 c3 90 90 55 48 89 e5
RSP: 0018:ffffffff88807dc0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff11150f3 RBX: ffffffff88875a00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff812b799a RDI: ffffffff877b951a
RBP: ffffffff88807dc8 R08: ffffffff81790be4 R09: fffffbfff110eb41
R10: fffffbfff110eb41 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffffffff110eb40 R14: dffffc0000000000 R15: 0000000000000000
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
 default_idle_call+0x59/0xa0 kernel/sched/idle.c:94
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x140/0x6d0 kernel/sched/idle.c:263
 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:354
 rest_init+0x29d/0x2b0 init/main.c:451
 arch_call_rest_init+0xe/0x10
 start_kernel+0x6f5/0x7f6 init/main.c:785
 x86_64_start_reservations+0x18/0x2e arch/x86/kernel/head64.c:472
 x86_64_start_kernel+0x7a/0x7d arch/x86/kernel/head64.c:453
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241