rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=a9f/1/0x4000000000000000 softirq=18307/18307 fqs=5216 
	(t=10502 jiffies g=22745 q=1600)
NMI backtrace for cpu 1
CPU: 1 PID: 5556 Comm: syz.3.348 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_acquire+0x134/0x4f0 kernel/locking/lockdep.c:5599
Code: 65 8b 05 af cb 9f 7e 85 c0 0f 85 88 01 00 00 65 48 8b 1d 5f c2 9f 7e 48 81 c3 ec 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 c4 02 00 00 83 3b 00 0f 85 5c 01 00 00 4c 8d bc 24 80
RSP: 0018:ffffc90003137900 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff888023180aec RCX: ffffffff8162ad0c
RDX: 0000000000000000 RSI: ffffffff8ad8f7e0 RDI: ffffffff8ad8f7a0
RBP: ffffc90003137a58 R08: dffffc0000000000 R09: fffffbfff1bd2986
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000626f28
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8a85e180
 __might_fault+0xb4/0x110 mm/memory.c:5328
 __copy_from_user include/linux/uaccess.h:109 [inline]
 check_xstate_in_sigframe arch/x86/kernel/fpu/signal.c:33 [inline]
 __fpu_restore_sig arch/x86/kernel/fpu/signal.c:317 [inline]
 fpu__restore_sig+0x1db/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: 0033:0x7fe7fb3219f9
Code: 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 01 48
RSP: 002b:00007ffce18aacd8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 000000000002d6cd RCX: 00007fe7fb3219f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe7fb4b0064
RBP: 00007fe7fb4b0064 R08: 00007fe7fb4aff80 R09: 00007ffce18aafbf
R10: 00007ffce18aadd0 R11: 0000000000000246 R12: 0000000000000032
R13: 00007ffce18aadd0 R14: 00007ffce18aadf0 R15: 000000000002d69b
 </TASK>