INFO: task syz-executor.3:10187 blocked for more than 143 seconds.
      Not tainted 5.14.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27128 pid:10187 ppid:  8425 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4940 [inline]
 __schedule+0xbfd/0x11d0 kernel/sched/core.c:6287
 schedule+0x14b/0x210 kernel/sched/core.c:6366
 schedule_timeout+0x98/0x2f0 kernel/time/timer.c:1857
 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion_timeout+0x46/0x60 kernel/sched/completion.c:157
 usb_start_wait_urb+0x167/0x550 drivers/usb/core/message.c:63
 do_proc_bulk+0x978/0x1080 drivers/usb/core/devio.c:1236
 proc_bulk drivers/usb/core/devio.c:1273 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline]
 usbdev_ioctl+0x3441/0x6b10 drivers/usb/core/devio.c:2713
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
RSP: 002b:00007efdc9242188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000020000580 RSI: 00000000c0185502 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe90a0bcff R14: 00007efdc9242300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1650 Comm: khungtaskd Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1ae/0x29f lib/dump_stack.c:105
 nmi_cpu_backtrace+0x405/0x430 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x191/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xc54/0xca0 kernel/hung_task.c:295
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17760 Comm: kworker/0:0 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:trace_hardirqs_off+0x14/0x70 kernel/trace/trace_preemptirq.c:78
Code: ff e8 c0 93 f9 ff e8 fb fc 78 ff e9 f7 fd ff ff 66 0f 1f 44 00 00 55 53 e8 a9 93 f9 ff 48 8b 5c 24 10 48 89 df e8 cc bf 5c 08 <65> 8b 2d 6d 5c 7b 7e 31 ff 89 ee e8 9c 97 f9 ff 85 ed 74 07 e8 83
RSP: 0018:ffffc90016647968 EFLAGS: 00000086
RAX: 431e348a80fb8f00 RBX: ffffffff89e6b22e RCX: ffff8880a2848000
RDX: 0000000000000000 RSI: 000000000000548e RDI: ffffffff89e6b22e
RBP: ffffc90016647a10 R08: ffffffff8481daec R09: fffffbfff1bb8166
R10: fffffbfff1bb8166 R11: 0000000000000000 R12: 0000000000000a06
R13: ffff8880111aee00 R14: ffff8880111aee48 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11d94c9000 CR3: 00000000719bd000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
 _raw_spin_lock_irqsave+0x8e/0x100 kernel/locking/spinlock.c:162
 _extract_crng+0xf8/0x350 drivers/char/random.c:997
 extract_crng drivers/char/random.c:1016 [inline]
 _get_random_bytes+0x1b4/0x230 drivers/char/random.c:1538
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:691 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:721 [inline]
 nsim_dev_trap_report_work+0x688/0xb20 drivers/net/netdevsim/dev.c:762
 process_one_work+0x853/0x1140 kernel/workqueue.c:2297
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2444
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 c0 93 f9 ff       	callq  0xfff993c5
   5:	e8 fb fc 78 ff       	callq  0xff78fd05
   a:	e9 f7 fd ff ff       	jmpq   0xfffffe06
   f:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  15:	55                   	push   %rbp
  16:	53                   	push   %rbx
  17:	e8 a9 93 f9 ff       	callq  0xfff993c5
  1c:	48 8b 5c 24 10       	mov    0x10(%rsp),%rbx
  21:	48 89 df             	mov    %rbx,%rdi
  24:	e8 cc bf 5c 08       	callq  0x85cbff5
* 29:	65 8b 2d 6d 5c 7b 7e 	mov    %gs:0x7e7b5c6d(%rip),%ebp        # 0x7e7b5c9d <-- trapping instruction
  30:	31 ff                	xor    %edi,%edi
  32:	89 ee                	mov    %ebp,%esi
  34:	e8 9c 97 f9 ff       	callq  0xfff997d5
  39:	85 ed                	test   %ebp,%ebp
  3b:	74 07                	je     0x44
  3d:	e8                   	.byte 0xe8
  3e:	83                   	.byte 0x83