rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10496 ticks this GP) idle=3444/1/0x4000000000000000 softirq=88446/88446 fqs=0
rcu: 	(t=10502 jiffies g=139593 q=273 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10502 jiffies! g139593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=57503
rcu: rcu_preempt kthread starved for 10505 jiffies! g139593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:25104 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2572
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
CPU: 0 PID: 8758 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-05204-g237bb5f7f7f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:lock_acquire+0x25b/0x530 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 13 99 86 00 f6 44 24 61 02 0f 85 8e 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90004c6f580 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200098debc RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8baad3a0 RDI: ffffffff8bfec660
RBP: ffffc90004c6f6d0 R08: ffffffff92cc75d7 R09: 1ffffffff2598eba
R10: dffffc0000000000 R11: fffffbfff2598ebb R12: 1ffff9200098deb8
R13: dffffc0000000000 R14: ffffc90004c6f5e0 R15: 0000000000000246
FS:  00007f1cb69246c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f93d55fe4 CR3: 000000005b3e6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 batadv_tt_local_purge_pending_clients+0xf7/0x390 net/batman-adv/translation-table.c:3654
 batadv_tt_local_resize_to_mtu+0x9b/0x130 net/batman-adv/translation-table.c:3957
 batadv_hard_if_event+0x1fc/0x1620
 notifier_call_chain+0x18f/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_mtu net/core/dev.c:2025 [inline]
 dev_set_mtu_ext+0x4e5/0x710 net/core/dev.c:8826
 dev_set_mtu+0xb0/0x1a0 net/core/dev.c:8847
 dev_ifsioc+0x566/0xe70 net/core/dev_ioctl.c:537
 dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:787
 sock_do_ioctl+0x240/0x460 net/socket.c:1236
 sock_ioctl+0x629/0x8e0 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f1cb5c7dda9
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:00007f1cb69240c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1cb5dabf80 RCX: 00007f1cb5c7dda9
RDX: 0000000020000000 RSI: 0000000000008922 RDI: 0000000000000003
RBP: 00007f1cb5cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1cb5dabf80 R15: 00007ffd8b9c9168
 </TASK>