rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=d5b/1/0x4000000000000000 softirq=85811/85813 fqs=5065 
	(t=10500 jiffies g=116341 q=687)
NMI backtrace for cpu 1
CPU: 1 PID: 27918 Comm: syz-executor.5 Not tainted 5.15.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3911 [inline]
 rcu_sched_clock_irq+0xf26/0x1770 kernel/rcu/tree.c:2606
 update_process_times+0x196/0x200 kernel/time/timer.c:1788
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:console_unlock+0xe53/0x12b0 kernel/printk/printk.c:2739
Code: 00 48 83 7c 24 18 00 75 19 e8 09 f0 19 00 eb 18 e8 02 f0 19 00 e8 1d 6d b6 08 48 83 7c 24 18 00 74 e7 e8 f0 ef 19 00 fb 31 ff <44> 89 f6 e8 45 f3 19 00 31 db 45 85 f6 0f 95 c0 89 c1 0a 4c 24 17
RSP: 0018:ffffc9000396e000 EFLAGS: 00000246
RAX: ffffffff81662b90 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90005c8a000 RSI: 000000000003ffff RDI: 0000000000000000
RBP: ffffc9000396e290 R08: ffffffff81662b5b R09: fffffbfff1f7b021
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1a4a786
R13: ffffffff8d253c68 R14: 0000000000000000 R15: dffffc0000000000
 vprintk_emit+0xba/0x150 kernel/printk/printk.c:2268
 _printk+0xd1/0x111 kernel/printk/printk.c:2289
 batadv_tt_local_resize_to_mtu+0xdf/0x130 net/batman-adv/translation-table.c:3961
 batadv_update_min_mtu net/batman-adv/hard-interface.c:647 [inline]
 batadv_hardif_activate_interface+0x1ca/0x390 net/batman-adv/hard-interface.c:674
 batadv_hard_if_event+0xbc/0x17a0 net/batman-adv/hard-interface.c:965
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
 __dev_notify_flags+0x304/0x610
 dev_change_flags+0xe7/0x190 net/core/dev.c:8863
 vlan_device_event+0x442/0x1dd0 net/8021q/vlan.c:469
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
 __dev_notify_flags+0x304/0x610
 dev_change_flags+0xe7/0x190 net/core/dev.c:8863
 do_setlink+0xcd1/0x3ae0 net/core/rtnetlink.c:2741
 rtnl_group_changelink net/core/rtnetlink.c:3270 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3439 [inline]
 rtnl_newlink+0x10b0/0x2070 net/core/rtnetlink.c:3549
 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5630
 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2505
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2412
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2466
 __sys_sendmsg net/socket.c:2495 [inline]
 __do_sys_sendmsg net/socket.c:2504 [inline]
 __se_sys_sendmsg+0x19a/0x260 net/socket.c:2502
 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+0x61/0xcb
RIP: 0033:0x7f9c18ba8ae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9c170e80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9c18cc8120 RCX: 00007f9c18ba8ae9
RDX: 0000000000000000 RSI: 0000000020006440 RDI: 0000000000000009
RBP: 00007f9c18bf447a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9c18cc8120 R15: 00007fff73c95de8
 </TASK>