rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=d00c/1/0x4000000000000000 softirq=0/0 fqs=5248 rcuc=10407 jiffies(starved)
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     8117          0            8
rcu: 	cputime:      111      52378            3   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=19449 q=3109 ncpus=2)
CPU: 0 UID: 0 PID: 16 Comm: ktimers/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x2e/0xb0 kernel/rcu/tree.c:751
Code: 41 57 41 56 53 65 ff 05 70 28 51 10 e8 1b 03 52 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 10 2d 25 8d <4c> 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 dc 9c 78 00
RSP: 0018:ffffc90000157800 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: b4d06fcdfa0c9800
RDX: 0000000000000000 RSI: ffffffff8b621660 RDI: ffffffff8b621620
RBP: ffffc900001578e0 R08: 0000000000000000 R09: ffffffff8af94c4b
R10: dffffc0000000000 R11: fffffbfff1e3ac27 R12: 0000000000000a06
R13: ffffc90000157868 R14: ffffffff8d252d10 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881268bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4a72aeed80 CR3: 0000000035850000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rcu_read_lock include/linux/rcupdate.h:842 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 rt_spin_lock+0x1e9/0x2c0 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:44 [inline]
 advance_sched+0xca/0xc90 net/sched/sch_taprio.c:929
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x54f/0xd40 kernel/time/hrtimer.c:1825
 hrtimer_run_softirq+0x1a3/0x2e0 kernel/time/hrtimer.c:1842
 handle_softirqs+0x22f/0x710 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 run_ktimerd+0xcf/0x190 kernel/softirq.c:1043
 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>