INFO: task syz-executor.1:8507 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:21928 pid:8507  ppid:3665   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
 ext4_file_write_iter+0x1d0/0x18d0
 do_iter_write+0x6c2/0xc20 fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_pwritev+0x200/0x350 fs/read_write.c:1031
 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+0x63/0xcd
RIP: 0033:0x7fe7be88c0d9
RSP: 002b:00007fe7bf5aa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fe7be9abf80 RCX: 00007fe7be88c0d9
RDX: 0000000000000001 RSI: 00000000200024c0 RDI: 0000000000000004
RBP: 00007fe7be8e7ae9 R08: 0000000000000f4a R09: 0000000000000005
R10: 00000000000000c2 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7365383f R14: 00007fe7bf5aa300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.1:8538 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:20096 pid:8538  ppid:3665   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 io_schedule+0x83/0x100 kernel/sched/core.c:8741
 bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0xbb/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0x1c3/0x240 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:69 [inline]
 lock_buffer include/linux/buffer_head.h:397 [inline]
 __sync_dirty_buffer+0x107/0x330 fs/buffer.c:2732
 __ext4_handle_dirty_metadata+0x29a/0x810 fs/ext4/ext4_jbd2.c:381
 ext4_convert_inline_data_nolock+0x6e8/0x820 fs/ext4/inline.c:1256
 ext4_convert_inline_data+0x4bf/0x600 fs/ext4/inline.c:2067
 ext4_fallocate+0x149/0x1c90 fs/ext4/extents.c:4702
 vfs_fallocate+0x515/0x670 fs/open.c:323
 do_vfs_ioctl+0x2187/0x29a0 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
 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+0x63/0xcd
RIP: 0033:0x7fe7be88c0d9
RSP: 002b:00007fe7bf589168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe7be9ac050 RCX: 00007fe7be88c0d9
RDX: 00000000200007c0 RSI: 0000000040305828 RDI: 0000000000000004
RBP: 00007fe7be8e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7365383f R14: 00007fe7bf589300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.1:8545 blocked for more than 145 seconds.
      Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:23704 pid:8545  ppid:3665   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 process_measurement+0x427/0x1bd0 security/integrity/ima/ima_main.c:241
 ima_file_check+0xd8/0x130 security/integrity/ima/ima_main.c:517
 do_open fs/namei.c:3559 [inline]
 path_openat+0x2642/0x2df0 fs/namei.c:3714
 do_filp_open+0x264/0x4f0 fs/namei.c:3741
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1337
 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+0x63/0xcd
RIP: 0033:0x7fe7be88c0d9
RSP: 002b:00007fe7bf568168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe7be9ac120 RCX: 00007fe7be88c0d9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007fe7be8e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7365383f R14: 00007fe7bf568300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.1:8547 blocked for more than 146 seconds.
      Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:25176 pid:8547  ppid:3665   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
 ext4_file_write_iter+0x1d0/0x18d0
 call_write_iter include/linux/fs.h:2199 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7dc/0xc50 fs/read_write.c:584
 ksys_write+0x177/0x2a0 fs/read_write.c:637
 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+0x63/0xcd
RIP: 0033:0x7fe7be88c0d9
RSP: 002b:00007fe7bf547168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe7be9ac1f0 RCX: 00007fe7be88c0d9
RDX: 0000000000001003 RSI: 0000000020002780 RDI: 0000000000000004
RBP: 00007fe7be8e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7365383f R14: 00007fe7bf547300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
 #0: ffff8880b9939dd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
 #1: ffff8880b9927788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:909
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d127330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d127b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:3/46:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: 
ffffc90000b77d00
 (
(work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:5/1097:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90005e9fd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by getty/3309:
 #0: ffff888147777098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/3667:
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/0:12/4024:
 #0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc900064a7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/1:16/4268:
 #0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc9000c047d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:12/8279:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90005eafd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:13/8298:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90005e8fd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by syz-executor.1/8507:
 #0: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
 #0: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 fs/read_write.c:1031
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
3 locks held by syz-executor.1/8538:
 #0: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2944 [inline]
 #0: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x489/0x670 fs/open.c:322
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x141/0x1c90 fs/ext4/extents.c:4701
 #2: ffff8880326f8ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff8880326f8ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x39b/0x600 fs/ext4/inline.c:2065
2 locks held by syz-executor.1/8545:
 #0: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: process_measurement+0x427/0x1bd0 security/integrity/ima/ima_main.c:241
3 locks held by syz-executor.1/8547:
 #0: ffff888024ad4fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1046
 #1: ffff88807ce04460 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x287/0xc50 fs/read_write.c:580
 #2: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880326f8e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
3 locks held by syz-executor.0/8594:
 #0: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2944 [inline]
 #0: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x489/0x670 fs/open.c:322
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x141/0x1c90 fs/ext4/extents.c:4701
 #2: ffff8880326ed108 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff8880326ed108 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x39b/0x600 fs/ext4/inline.c:2065
2 locks held by syz-executor.0/8606:
 #0: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
 #0: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 fs/read_write.c:1031
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
2 locks held by syz-executor.0/8607:
 #0: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: process_measurement+0x427/0x1bd0 security/integrity/ima/ima_main.c:241
3 locks held by syz-executor.0/8608:
 #0: ffff88801ea3c868 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1046
 #1: ffff8880818ba460 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x287/0xc50 fs/read_write.c:580
 #2: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880326ed440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xae/0x3a0 fs/ext4/file.c:279
1 lock held by syz-executor.1/8610:
2 locks held by kworker/u4:14/14020:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90019137d00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:15/14021:
 #0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90019177d00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by syz-executor.2/14056:
 #0: ffff88803e5d40e0 (&type->s_umount_key#55/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
2 locks held by syz-executor.2/14057:
 #0: ffff888037496850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #0: ffff888037496850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: lock_mount+0x5f/0x2d0 fs/namespace.c:2292
 #1: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
 #1: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/14081:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:match_held_lock+0x2/0xb0 kernel/locking/lockdep.c:5113
Code: ff ff 31 db 48 c7 c7 40 b1 ed 8a 48 c7 c6 80 b1 ed 8a 31 c0 e8 0f cd bf f6 0f 0b e9 38 ff ff ff e8 c3 fa ff ff 0f 1f 00 55 53 <bd> 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 10 00 72
RSP: 0018:ffffc90000a1f660 EFLAGS: 00000097
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8d1270e0 RDI: ffff888017a644d0
RBP: ffff888017a644d0 R08: dffffc0000000000 R09: fffffbfff1cebe96
R10: fffffbfff1cebe96 R11: 1ffffffff1cebe95 R12: 0000000000000046
R13: ffff888017a63a80 R14: 00000000ffffffff R15: ffffffff8d1270e0
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95ca020718 CR3: 0000000044a05000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __lock_is_held kernel/locking/lockdep.c:5409 [inline]
 lock_is_held_type+0xa1/0x180 kernel/locking/lockdep.c:5711
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_sched_held+0x87/0x110 kernel/rcu/update.c:125
 trace_lock_acquire+0x98/0x260 include/trace/events/lock.h:24
 lock_acquire+0xa4/0x3c0 kernel/locking/lockdep.c:5639
 local_lock_acquire+0x29/0x170 include/linux/local_lock_internal.h:29
 crng_make_state+0x1cd/0x550 drivers/char/random.c:325
 _get_random_bytes+0xba/0x2a0 drivers/char/random.c:363
 eth_random_addr include/linux/etherdevice.h:232 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:759 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
 nsim_dev_trap_report_work+0x343/0xaa0 drivers/net/netdevsim/dev.c:853
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>