rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=911/1/0x4000000000000000 softirq=7978/7978 fqs=5170 
	(t=10502 jiffies g=8149 q=4361)
NMI backtrace for cpu 0
CPU: 0 PID: 4218 Comm: syz.0.133 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__local_bh_disable_ip+0x1b/0x210 kernel/softirq.c:305
Code: f6 e9 49 01 3d 00 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 41 89 f7 <48> 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00
RSP: 0018:ffffc900031179c0 EFLAGS: 00000286
RAX: ffffffff812f4b3a RBX: 00000000000002f8 RCX: 0000000000040000
RDX: ffffc900038ac000 RSI: 0000000000000200 RDI: ffffffff812f4b35
RBP: ffffc90003117a90 R08: ffffffff812f3bf6 R09: fffff52000622f7c
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff187666c
R13: 1ffff110043e9e19 R14: 1ffff110043e9b28 R15: 0000000000000200
 fpregs_lock arch/x86/include/asm/fpu/api.h:70 [inline]
 restore_fpregs_from_user arch/x86/kernel/fpu/signal.c:257 [inline]
 __fpu_restore_sig arch/x86/kernel/fpu/signal.c:334 [inline]
 fpu__restore_sig+0x4f7/0x1100 arch/x86/kernel/fpu/signal.c:466
 restore_sigcontext+0x638/0x710 arch/x86/kernel/signal.c:139
 __do_sys_rt_sigreturn+0x190/0x250 arch/x86/kernel/signal.c:674
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fce7c655e77
Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89
RSP: 002b:00007fce7aad20e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fce7c7f1f88 RCX: 00007fce7c655e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce7c7f1f88
RBP: 00007fce7c7f1f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce7c7f1f8c
R13: 0000000000000000 R14: 00007ffe9e58beb0 R15: 00007ffe9e58bf98
 </TASK>