INFO: task khugepaged:34 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged      state:D stack:23584 pid:34    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x9f7/0x2890 kernel/sched/core.c:6606
 schedule+0xde/0x1b0 kernel/sched/core.c:6682
 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
 __flush_work+0x4d7/0xa80 kernel/workqueue.c:3073
 __lru_add_drain_all+0x387/0x680 mm/swap.c:931
 khugepaged_do_scan mm/khugepaged.c:2407 [inline]
 khugepaged+0xfa/0x1190 mm/khugepaged.c:2476
 kthread+0x298/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8b17df10 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8b17dc10 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8b17ea60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
1 lock held by khugepaged/34:
 #0: ffffffff8b26eb88 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x57/0x680 mm/swap.c:886
2 locks held by getty/4731:
 #0: ffff88814a0c4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb73/0x1040 drivers/tty/n_tty.c:2177
4 locks held by kworker/1:3/5191:
2 locks held by dhcpcd/15886:
 #0: ffff88801e36e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff88801e36e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
 #1: ffffffff8b1896f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #1: ffffffff8b1896f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
2 locks held by dhcpcd/15892:
 #0: ffff888078b02130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888078b02130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
 #1: ffffffff8b1896f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
 #1: ffffffff8b1896f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946
1 lock held by dhcpcd/15900:
 #0: ffff888027596130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888027596130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/15950:
 #0: ffff888024aca130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888024aca130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/15951:
 #0: ffff888026c88130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888026c88130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/15952:
 #0: ffff8880254c6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff8880254c6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/15953:
 #0: ffff888021772130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888021772130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x27/0xad0 net/packet/af_packet.c:3194
5 locks held by syz-executor.0/15955:
 #0: ffff8880165c0460 (sb_writers#11){.+.+}-{0:0}, at: ksys_write+0xf2/0x1c0 fs/read_write.c:637
 #1: ffff888043671c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x218/0x530 fs/kernfs/file.c:325
 #2: ffff888027049da0 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x23c/0x530 fs/kernfs/file.c:326
 #3: ffffffff8b02d330 (cpu_hotplug_lock){++++}-{0:0}, at: cpuset_write_u64+0x43/0x250 kernel/cgroup/cpuset.c:2627
 #4: ffffffff8b1d0c10 (&cpuset_rwsem){++++}-{0:0}, at: cpuset_write_u64+0x4f/0x250 kernel/cgroup/cpuset.c:2628

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x5b/0x81 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x18/0x106 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x259/0x2d0 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+0x8c8/0xc60 kernel/hung_task.c:377
 kthread+0x298/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5191 Comm: kworker/1:3 Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: events ipvlan_process_multicast
RIP: 0010:lock_is_held_type+0xef/0x140 kernel/locking/lockdep.c:5713
Code: 45 31 ed 44 39 f0 41 0f 94 c5 48 c7 c7 20 4e 0b 89 e8 65 10 00 00 b8 ff ff ff ff 65 0f c1 05 30 95 30 77 83 f8 01 75 29 9c 58 <f6> c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 44 89
RSP: 0018:ffffc900001e0640 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000002 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff890b4e20 RDI: ffffffff896386a0
RBP: ffffffff8b17ea60 R08: 0000000000000001 R09: ffffc900001e0850
R10: ffff88801ee9fc00 R11: ffff88805e4b6dc0 R12: ffff88801e7b3980
R13: 0000000000000001 R14: 00000000ffffffff R15: ffff88801e7b43c8
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fef0a3e5310 CR3: 000000000ae8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __find_rr_leaf+0x23c/0xa40 net/ipv6/route.c:794
 find_rr_leaf net/ipv6/route.c:850 [inline]
 rt6_select net/ipv6/route.c:894 [inline]
 fib6_table_lookup+0x4de/0x810 net/ipv6/route.c:2182
 ip6_pol_route+0x181/0xdd0 net/ipv6/route.c:2218
 pol_lookup_func include/net/ip6_fib.h:582 [inline]
 fib6_rule_lookup+0x100/0x660 net/ipv6/fib6_rules.c:116
 ip6_route_input_lookup net/ipv6/route.c:2287 [inline]
 ip6_route_input+0x54b/0x9f0 net/ipv6/route.c:2583
 ip6_rcv_finish net/ipv6/ip6_input.c:77 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 ipv6_rcv+0x180/0x2e0 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core+0x104/0x180 net/core/dev.c:5482
 process_backlog+0x326/0x730 net/core/dev.c:5924
 __napi_poll+0x9e/0x5c0 net/core/dev.c:6485
 napi_poll net/core/dev.c:6552 [inline]
 net_rx_action+0x8c8/0xcc0 net/core/dev.c:6663
 __do_softirq+0x1fb/0xadc kernel/softirq.c:571
 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472
 </IRQ>
 <TASK>
 do_softirq kernel/softirq.c:464 [inline]
 __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:396
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 ipvlan_process_multicast+0x768/0xcb0 drivers/net/ipvlan/ipvlan_core.c:279
 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289
 worker_thread+0x59c/0xec0 kernel/workqueue.c:2436
 kthread+0x298/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>