rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=e8f/1/0x4000000000000002 softirq=10422/10423 fqs=2100 
	(detected by 1, t=10506 jiffies, g=13161, q=641)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5446 Comm: syz.0.24 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:214 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:344 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:895 [inline]
RIP: 0010:irq_work_queue_on+0x52/0x220 kernel/irq_work.c:95
Code: 00 e8 f2 39 f4 ff 41 89 ee 89 e8 c1 e8 06 48 8d 3c c5 e8 ab 68 8d be 08 00 00 00 e8 78 b3 39 00 31 f6 4c 0f a3 35 96 23 e5 0b <41> 0f 93 c6 40 0f 92 c6 bf 02 00 00 00 e8 1c 3c f4 ff 45 84 f6 0f
RSP: 0018:ffffc9000336ec08 EFLAGS: 00000047
RAX: 0000000000000001 RBX: ffff8880b903b1b0 RCX: ffffffff81838848
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d68abe8
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad157e
R10: fffffbfff1ad157e R11: 1ffffffff1ad157d R12: ffff8880b903b1c8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11017207639
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0a1099f50 CR3: 000000000be8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_read_unlock_special+0x379/0x480 kernel/rcu/tree_plugin.h:664
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __perf_event_output kernel/events/core.c:7789 [inline]
 perf_event_output_forward+0x216/0x280 kernel/events/core.c:7798
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9491
 perf_swevent_overflow kernel/events/core.c:9567 [inline]
 perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9605
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10023
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:9997
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 8d 26 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc9000336f420 EFLAGS: 00000206
RAX: 620b51f62b162400 RBX: 1ffff9200066de88 RCX: 620b51f62b162400
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59a740
RBP: ffffc9000336f4f0 R08: dffffc0000000000 R09: fffffbfff1ff3619
R10: fffffbfff1ff3619 R11: 1ffffffff1ff3618 R12: ffffffff8c120400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xfbc/0x2520 mm/memory.c:1576
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3204
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x599/0x20a0 kernel/exit.c:861
 do_group_exit+0x12e/0x300 kernel/exit.c:996
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8f486a6de9
Code: Unable to access opcode bytes at RIP 0x7f8f486a6dbf.
RSP: 002b:00007f8f479180e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f8f488bffa8 RCX: 00007f8f486a6de9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8f488bffa8
RBP: 00007f8f488bffa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f488bffac
R13: 0000000000000000 R14: 00007ffef0787840 R15: 00007ffef0787928
 </TASK>