INFO: task syz-executor.0:18166 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc3-next-20230109-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:27696 pid:18166 ppid:5119   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
 __down_read_common kernel/locking/rwsem.c:1260 [inline]
 __down_read kernel/locking/rwsem.c:1269 [inline]
 down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
 mmap_read_lock include/linux/mmap_lock.h:117 [inline]
 do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379
 handle_page_fault arch/x86/mm/fault.c:1519 [inline]
 exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f6659a276c6
RSP: 002b:00007ffe313beb08 EFLAGS: 00010287

RAX: 0000001b32c22000 RBX: 00007f6659bac018 RCX: 0000001b32c20000
RDX: 0000001b32c22004 RSI: 0000001b32c2182c RDI: 00000000f94978fb
RBP: 00000000f94978fb R08: 0000001b33020000 R09: 00000000f94978ff
R10: 00007ffe313e9090 R11: 0000000000026526 R12: 00007f6659ba0000
R13: 0000000000000001 R14: 00000000000037ee R15: ffffffff8165e850
 </TASK>

Showing all threads with locks held in the system:
task:rcu_tasks_kthre state:I
 stack:28968 pid:12    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 rcu_tasks_one_gp+0x484/0xcd0 kernel/rcu/tasks.h:517
 rcu_tasks_kthread+0x77/0xa0 kernel/rcu/tasks.h:555
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c7929f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510
task:rcu_tasks_trace state:I
 stack:29224 pid:13    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 rcu_tasks_one_gp+0x484/0xcd0 kernel/rcu/tasks.h:517
 rcu_tasks_kthread+0x77/0xa0 kernel/rcu/tasks.h:555
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c7926f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510
task:kworker/u4:3    state:R
  running task    
 stack:23656 pid:51    ppid:2      flags:0x00004000
Workqueue: events_unbound toggle_allocation_gate

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 worker_thread+0x160/0x1090 kernel/workqueue.c:2461
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
no locks held by kworker/u4:3/51.
task:getty           state:S
 stack:23336 pid:4751  ppid:1      flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143
 wait_woken+0x197/0x200 kernel/sched/wait.c:463
 n_tty_read+0x1055/0x13e0 drivers/tty/n_tty.c:2243
 iterate_tty_read drivers/tty/tty_io.c:852 [inline]
 tty_read+0x30e/0x5a0 drivers/tty/tty_io.c:927
 call_read_iter include/linux/fs.h:2185 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x681/0x930 fs/read_write.c:470
 ksys_read+0x12b/0x250 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0045eff8fe
RSP: 002b:00007ffc67766668 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000558426796910 RCX: 00007f0045eff8fe
RDX: 0000000000000001 RSI: 00007ffc67766680 RDI: 0000000000000000
RBP: 0000558426796970 R08: 0000000000000007 R09: 0000558426797cd0
R10: 0000000000000063 R11: 0000000000000246 R12: 00005584267969ac
R13: 00007ffc67766680 R14: 0000000000000000 R15: 00005584267969ac
 </TASK>
2 locks held by getty/4751:
 #0: ffff888027846098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
task:kworker/u4:11   state:R  running task     stack:23328 pid:5308  ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 </TASK>
no locks held by kworker/u4:11/5308.
task:syz-executor.0  state:D stack:27696 pid:18166 ppid:5119   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5252 [inline]
 __schedule+0x25d0/0x5a70 kernel/sched/core.c:6570
 schedule+0xde/0x1b0 kernel/sched/core.c:6646
 rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
 __down_read_common kernel/locking/rwsem.c:1260 [inline]
 __down_read kernel/locking/rwsem.c:1269 [inline]
 down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
 mmap_read_lock include/linux/mmap_lock.h:117 [inline]
 do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379
 handle_page_fault arch/x86/mm/fault.c:1519 [inline]
 exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f6659a276c6
RSP: 002b:00007ffe313beb08 EFLAGS: 00010287
RAX: 0000001b32c22000 RBX: 00007f6659bac018 RCX: 0000001b32c20000
RDX: 0000001b32c22004 RSI: 0000001b32c2182c RDI: 00000000f94978fb
RBP: 00000000f94978fb R08: 0000001b33020000 R09: 00000000f94978ff
R10: 00007ffe313e9090 R11: 0000000000026526 R12: 00007f6659ba0000
R13: 0000000000000001 R14: 00000000000037ee R15: ffffffff8165e850
 </TASK>
1 lock held by syz-executor.0/18166:
 #0: ffff8880271fdb98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
 #0: ffff8880271fdb98 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379
task:syz-executor.0  state:R  running task     stack:27208 pid:18172 ppid:5119   flags:0x0000400e
Call Trace:
 <TASK>
 </TASK>
3 locks held by syz-executor.0/18172:

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc3-next-20230109-syzkaller #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+0xd1/0x138 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 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+0xcae/0x1050 kernel/hung_task.c:377
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18172 Comm: syz-executor.0 Not tainted 6.2.0-rc3-next-20230109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:lock_is_held_type+0x0/0x140 kernel/locking/lockdep.c:5697
Code: 48 c7 c6 a0 54 4c 8a 48 c7 c7 20 50 4c 8a 89 44 24 04 e8 a7 0e b9 ff 0f 0b 8b 44 24 04 eb bd 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 41 57 41 56 41 55 41 bd ff ff ff ff 41 54 55 53 48 83
RSP: 0018:ffffc90000007c30 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffffffff81636d1c
RDX: 0000000000000003 RSI: 00000000ffffffff RDI: ffffffff8c793480
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8e73b917
R10: fffffbfff1ce7722 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff840ecdc2
FS:  00007f665a7dc700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00cd0e890 CR3: 00000000295ba000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_sched_held+0x3e/0x70 kernel/rcu/update.c:125
 trace_lock_acquire+0x1f1/0x290 include/trace/events/lock.h:24
 lock_acquire+0x32/0xc0 kernel/locking/lockdep.c:5640
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
 debug_object_activate+0x132/0x3e0 lib/debugobjects.c:665
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer+0x2b/0x490 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1702 [inline]
 __hrtimer_run_queues+0xa40/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17f/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x1fb/0xaf6 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 36 c1 88 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 2d 0b 82 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc90004bcf5a8 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90004652000
RDX: 0000000000040000 RSI: ffffffff816632ca RDI: 0000000000000007
RBP: ffffc90004bcf7b0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff91bdffa0 R14: 0000000000000200 R15: 0000000000000000
 console_emit_next_record.constprop.0+0x550/0x890 arch/x86/include/asm/irqflags.h:45
 console_flush_all+0x547/0x6e0 kernel/printk/printk.c:2887
 console_unlock+0xb8/0x1f0 kernel/printk/printk.c:2964
 vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2357
 vprintk+0x84/0xa0 kernel/printk/printk_safe.c:50
 _printk+0xbe/0xf1 kernel/printk/printk.c:2378
 mt_dump_arange64 lib/maple_tree.c:6778 [inline]
 mt_dump_node+0x6bf/0x927 lib/maple_tree.c:6832
 mt_dump.cold+0xf2/0x115 lib/maple_tree.c:6849
 mt_find.cold+0x48/0x90 lib/maple_tree.c:6473
 find_vma+0x10c/0x1b0 mm/mmap.c:1850
 walk_page_range+0x2b1/0x4a0 mm/pagewalk.c:463
 mlock_vma_pages_range mm/mlock.c:386 [inline]
 mlock_fixup+0x650/0x810 mm/mlock.c:462
 apply_vma_lock_flags+0x23d/0x350 mm/mlock.c:506
 do_mlock+0x25a/0x6d0 mm/mlock.c:601
 __do_sys_mlock2 mm/mlock.c:628 [inline]
 __se_sys_mlock2 mm/mlock.c:618 [inline]
 __x64_sys_mlock2+0xc1/0x100 mm/mlock.c:618
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6659a8c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f665a7dc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000145
RAX: ffffffffffffffda RBX: 00007f6659babf80 RCX: 00007f6659a8c0c9
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000
RBP: 00007f6659ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe313beb3f R14: 00007f665a7dc300 R15: 0000000000022000
 </TASK>