rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=ae5c/1/0x4000000000000000 softirq=89200/89201 fqs=5244
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     8422          0            0
rcu: 	cputime:      140      52358            5   ==> 52520(ms)
rcu: 	(t=10503 jiffies g=79389 q=3745 ncpus=2)
CPU: 0 UID: 0 PID: 6477 Comm: kworker/u8:14 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:qdisc_dev include/net/sch_generic.h:571 [inline]
RIP: 0010:taprio_dequeue_from_txq+0x64/0x900 net/sched/sch_taprio.c:710
Code: 74 08 4c 89 ef e8 cc 75 c5 f8 4c 8d a3 40 02 00 00 4d 8b 6d 00 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 4c 89 ef e8 a2 75 c5 f8 4d 8b 6d 00 4c 89 e0 48 c1 e8 03 48
RSP: 0018:ffffc90000007ad8 EFLAGS: 00000246
RAX: 1ffff1100a40e800 RBX: ffff888029149000 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 000000000000000a RDI: ffff888029149000
RBP: 1ffff11005229262 R08: 0000000000000000 R09: ffffffff895fa386
R10: 0000000000000001 R11: ffffffff8952fbf0 R12: ffff888029149240
R13: ffff888052074000 R14: ffff888056808000 R15: 000000000000000a
FS:  0000000000000000(0000) GS:ffff888126138000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23d2b156c0 CR3: 000000007592a000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 taprio_dequeue_tc_priority+0x1ac/0x750 net/sched/sch_taprio.c:792
 taprio_dequeue+0x186/0x550 net/sched/sch_taprio.c:-1
 dequeue_skb net/sched/sch_generic.c:297 [inline]
 qdisc_restart net/sched/sch_generic.c:402 [inline]
 __qdisc_run+0x23f/0x1540 net/sched/sch_generic.c:420
 qdisc_run+0xc5/0x290 include/net/pkt_sched.h:120
 net_tx_action+0x7c9/0x980 net/core/dev.c:5774
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:314
Code: 48 89 44 11 20 c3 cc cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 14 25 08 80 6e 92 65 8b 0d 08 78 ae 10 81 e1 00 01 ff 00
RSP: 0018:ffffc9001afff858 EFLAGS: 00000246
RAX: ffffffff8b107843 RBX: 0000000000000001 RCX: ffff88807883bc80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001afff9b0 R08: 0000000000000000 R09: ffffffff8b107600
R10: dffffc0000000000 R11: ffffed10062fd817 R12: ffff8880786576c0
R13: fffffffffffffe38 R14: dffffc0000000000 R15: ffff888032bf9d90
 rcu_read_unlock include/linux/rcupdate.h:895 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:778 [inline]
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0x673/0xf00 net/batman-adv/bat_iv_ogm.c:873
 batadv_iv_send_outstanding_bat_ogm_packet+0x6c6/0x7e0 net/batman-adv/bat_iv_ogm.c:1709
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
sched: DL replenish lagged too much