Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=2e3c/1/0x4000000000000000 softirq=0/0 fqs=2617 rcuc=10499 jiffies(starved)
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:    19374       2518        14571
rcu: 	cputime:     4999      22564        24822   ==> 52460(ms)
rcu: 	(t=10501 jiffies g=12881 q=877 ncpus=2)
CPU: 1 UID: 0 PID: 1392 Comm: kworker/u8:13 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:finish_task_switch+0x413/0xc60 kernel/sched/core.c:5371
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 07 33 c3 09 e8 f2 0a 39 00 fb 4c 8b 65 c8 <49> 8d bc 24 f8 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0000:ffffc90006e276a0 EFLAGS: 00000206
RAX: 0000000000016cb1 RBX: ffff8880b873d0e0 RCX: 8000000000000001
RDX: 0000000000000006 RSI: ffffffff8d8c94ba RDI: ffffffff8bcc2080
RBP: ffffc90006e276f0 R08: ffffffff8fb1dd7f R09: 1ffffffff1f63baf
R10: dffffc0000000000 R11: fffffbfff1f63bb0 R12: ffff8880296d5dc0
R13: ffff8880b873d0a8 R14: dffffc0000000000 R15: 1ffff110170e7a1c
FS:  0000000000000000(0000) GS:ffff888125cd6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe1b1b2830 CR3: 0000000032574000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5523 [inline]
 __schedule+0x16e1/0x5700 kernel/sched/core.c:7270
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7592
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__local_bh_enable_ip+0x1c1/0x2b0 kernel/softirq.c:330
Code: f7 89 df e8 61 01 00 00 41 f7 c4 00 02 00 00 74 05 e8 a3 eb 45 00 9c 58 a9 00 02 00 00 75 23 41 f7 c4 00 02 00 00 74 01 fb 5b <41> 5c 41 5d 41 5e 41 5f 5d e9 51 52 d0 09 cc 90 0f 0b 90 e9 66 fe
RSP: 0000:ffffc90006e27a20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: ffff8880385698e8 RCX: 0000000000000046
RDX: 0000000000000006 RSI: ffffffff8d8c94ba RDI: ffffffff8bcc2080
RBP: 1ffff110052dad37 R08: ffffffff8fb1dd7f R09: 1ffffffff1f63baf
R10: dffffc0000000000 R11: fffffbfff1f63bb0 R12: 0000000000000282
R13: dffffc0000000000 R14: ffff8880296d69bc R15: 0000000000000001
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 spin_unlock_bh include/linux/spinlock_rt.h:122 [inline]
 batadv_tt_global_purge net/batman-adv/translation-table.c:2390 [inline]
 batadv_tt_purge+0x45a/0x9f0 net/batman-adv/translation-table.c:3754
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>