rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=bab/1/0x4000000000000000 softirq=102989/102992 fqs=5244 
	(t=10502 jiffies g=137681 q=738)
NMI backtrace for cpu 0
CPU: 0 PID: 27726 Comm: syz-executor.3 Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #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+0x1dc/0x2d8 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:604 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
 rcu_pending kernel/rcu/tree.c:3919 [inline]
 rcu_sched_clock_irq+0x1df5/0x2b70 kernel/rcu/tree.c:2617
 update_process_times+0x197/0x200 kernel/time/timer.c:1785
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x270 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:debug_spin_lock_before kernel/locking/spinlock_debug.c:87 [inline]
RIP: 0010:do_raw_spin_lock+0xe7/0x8e0 kernel/locking/spinlock_debug.c:114
Code: 00 00 00 00 00 fc ff df 48 89 1c 24 48 8b 03 65 48 8b 0c 25 80 6f 02 00 48 89 4c 24 20 48 39 c8 0f 84 e9 01 00 00 49 8d 78 08 <49> 89 fd 49 c1 ed 03 41 8a 44 15 00 84 c0 48 89 7c 24 08 0f 85 07
RSP: 0018:ffffc90002bd6bc0 EFLAGS: 00000206
RAX: ffffffffffffffff RBX: ffff88808f6bda50 RCX: ffff88801835d700
RDX: dffffc0000000000 RSI: 1ffff9200057ad80 RDI: ffff88808f6bda48
RBP: ffffc90002bd6ca0 R08: ffff88808f6bda40 R09: fffffbfff1ffbbe1
R10: fffffbfff1ffbbe1 R11: 0000000000000000 R12: ffff88808f6bda44
R13: dffffc0000000000 R14: ffff88808ae70fd0 R15: 1ffff11011ed7b48
 spin_lock_bh include/linux/spinlock.h:354 [inline]
 batadv_tt_local_purge_pending_clients+0xf0/0x540 net/batman-adv/translation-table.c:3655
 batadv_tt_local_resize_to_mtu+0x92/0x130 net/batman-adv/translation-table.c:3958
 batadv_update_min_mtu net/batman-adv/hard-interface.c:635 [inline]
 batadv_hardif_activate_interface+0x1b0/0x3a0 net/batman-adv/hard-interface.c:662
 batadv_hardif_enable_interface+0x754/0xa40 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+0x1a59/0x1d80 net/core/rtnetlink.c:3531
 rtnetlink_rcv_msg+0x96f/0xec0 net/core/rtnetlink.c:5596
 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2494
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x81a/0x9f0 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0xaec/0xe60 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 ____sys_sendmsg+0x5b9/0x910 net/socket.c:2413
 ___sys_sendmsg net/socket.c:2467 [inline]
 __sys_sendmsg+0x280/0x370 net/socket.c:2496
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f91c36c6049
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:00007f91c201a168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f91c37d9030 RCX: 00007f91c36c6049
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006
RBP: 00007f91c372008d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6a28ce9f R14: 00007f91c201a300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess), 7 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	1c 24                	sbb    $0x24,%al
   5:	48 8b 03             	mov    (%rbx),%rax
   8:	65 48 8b 0c 25 80 6f 	mov    %gs:0x26f80,%rcx
   f:	02 00
  11:	48 89 4c 24 20       	mov    %rcx,0x20(%rsp)
  16:	48 39 c8             	cmp    %rcx,%rax
  19:	0f 84 e9 01 00 00    	je     0x208
  1f:	49 8d 78 08          	lea    0x8(%r8),%rdi
* 23:	49 89 fd             	mov    %rdi,%r13 <-- trapping instruction
  26:	49 c1 ed 03          	shr    $0x3,%r13
  2a:	41 8a 44 15 00       	mov    0x0(%r13,%rdx,1),%al
  2f:	84 c0                	test   %al,%al
  31:	48 89 7c 24 08       	mov    %rdi,0x8(%rsp)
  36:	0f                   	.byte 0xf
  37:	85 07                	test   %eax,(%rdi)