rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2648 jiffies s: 21405 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14840 Comm: kvm-nx-lpage-re Not tainted 6.11.0-syzkaller-12113-ge7ed34365879 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_acquire+0x5/0x550 kernel/locking/lockdep.c:5793
Code: a9 00 ff ff 00 0f 95 c0 c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 20 01 00
RSP: 0018:ffffc90000007c78 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffffff89c272d2 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e937de0
RBP: ffff88807d8a58c8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100cb3f25e R12: dffffc0000000000
R13: ffff88807d8a5808 R14: ffff88807d8a5800 R15: ffff8880659f9360
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2e9fcb CR3: 000000006552c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 3e fa 34 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 63 c4 9c f5 65 8b 05 64 68 3d 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9001188fb20 EFLAGS: 00000206
RAX: 8a5f014b622ccd00 RBX: 1ffff92002311f68 RCX: ffffffff8170bc1a
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001
RBP: ffffc9001188fbb0 R08: ffffffff94290817 R09: 1ffffffff2852102
R10: dffffc0000000000 R11: fffffbfff2852103 R12: dffffc0000000000
R13: 1ffff92002311f64 R14: ffffc9001188fb40 R15: 0000000000000246
 complete_vfork_done kernel/fork.c:1566 [inline]
 mm_release+0x254/0x430 kernel/fork.c:1634
 exit_mm+0xb0/0x310 kernel/exit.c:544
 do_exit+0x9b2/0x28e0 kernel/exit.c:926
 kthread_exit+0x47/0x60 kernel/kthread.c:316
 kthread+0x310/0x390 kernel/kthread.c:391
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>