rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=a03/1/0x4000000000000000 softirq=24285/24287 fqs=5238 
	(t=10502 jiffies g=30801 q=1592)
NMI backtrace for cpu 1
CPU: 1 PID: 8620 Comm: syz-executor.2 Not tainted 5.18.0-rc6-syzkaller-00153-g2fe1020d73ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x236/0x3a0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:639 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:723 [inline]
 rcu_pending kernel/rcu/tree.c:3923 [inline]
 rcu_sched_clock_irq+0xf1b/0x18d0 kernel/rcu/tree.c:2625
 update_process_times+0x197/0x200 kernel/time/timer.c:1788
 tick_sched_handle kernel/time/tick-sched.c:243 [inline]
 tick_sched_timer+0x377/0x540 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_acquire+0x21e/0x400 kernel/locking/lockdep.c:5645
Code: 23 00 74 08 4c 89 f7 e8 e0 fd 6f 00 f6 44 24 61 02 0f 85 76 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 43 c7 44 2c 09 00 00 00 00 43 c7 44 2c 11
RSP: 0018:ffffc900030deb60 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200061bd78 RCX: ffff88801e3627d8
RDX: dffffc0000000000 RSI: ffffffff8a8d1720 RDI: ffffffff8ae88f20
RBP: ffffc900030decc0 R08: dffffc0000000000 R09: fffffbfff1f64415
R10: fffffbfff1f64415 R11: 1ffffffff1f64414 R12: dffffc0000000000
R13: 1ffff9200061bd74 R14: ffffc900030debc0 R15: 0000000000000246
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:354 [inline]
 batadv_tt_local_purge+0x100/0x350 net/batman-adv/translation-table.c:1355
 batadv_tt_local_resize_to_mtu+0x8a/0x130 net/batman-adv/translation-table.c:3957
 batadv_update_min_mtu net/batman-adv/hard-interface.c:635 [inline]
 batadv_hardif_activate_interface+0x1af/0x260 net/batman-adv/hard-interface.c:662
 batadv_hardif_enable_interface+0x627/0x890 net/batman-adv/hard-interface.c:745
 batadv_softif_slave_add+0x75/0xf0 net/batman-adv/soft-interface.c:839
 do_set_master net/core/rtnetlink.c:2534 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3500 [inline]
 rtnl_newlink+0x1c32/0x2070 net/core/rtnetlink.c:3531
 rtnetlink_rcv_msg+0x92f/0xe80 net/core/rtnetlink.c:5993
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2413
 ___sys_sendmsg net/socket.c:2467 [inline]
 __sys_sendmsg+0x27e/0x370 net/socket.c:2496
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6892e890e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f6893f18168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6892f9bf60 RCX: 00007f6892e890e9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006
RBP: 00007f6892ee308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc91aa691f R14: 00007f6893f18300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	23 00                	and    (%rax),%eax
   2:	74 08                	je     0xc
   4:	4c 89 f7             	mov    %r14,%rdi
   7:	e8 e0 fd 6f 00       	callq  0x6ffdec
   c:	f6 44 24 61 02       	testb  $0x2,0x61(%rsp)
  11:	0f 85 76 01 00 00    	jne    0x18d
  17:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 40 0e 36 	movq   $0x45e0360e,0x40(%rsp)
  28:	e0 45
* 2a:	4b c7 04 2c 00 00 00 	movq   $0x0,(%r12,%r13,1) <-- trapping instruction
  31:	00
  32:	43 c7 44 2c 09 00 00 	movl   $0x0,0x9(%r12,%r13,1)
  39:	00 00
  3b:	43                   	rex.XB
  3c:	c7                   	.byte 0xc7
  3d:	44 2c 11             	rex.R sub $0x11,%al