rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=e23/1/0x4000000000000002 softirq=7116/7117 fqs=2100 
	(detected by 1, t=10505 jiffies, g=7617, q=1443)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4507 Comm: syz.1.84 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:unwind_next_frame+0x69e/0x1cf0 arch/x86/kernel/unwind_orc.c:-1
Code: c1 e8 03 0f b6 04 28 84 c0 74 64 44 89 f9 80 e1 07 38 c1 7c 5a be 02 00 00 00 4c 89 ff 49 89 d6 e8 a7 13 89 00 e9 0c 13 00 00 <48> 8b 44 24 28 80 3c 28 00 4c 8d 73 38 74 08 4c 89 f7 e8 cb 12 89
RSP: 0000:ffffc90003856fb8 EFLAGS: 00000097
RAX: 0000000000000015 RBX: ffffc90003857100 RCX: ffffffff8d993080
RDX: ffffffff8e04c020 RSI: ffffffff8d99305c RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000009 R09: ffffc90003857100
R10: dffffc0000000000 R11: fffff5200070ae2c R12: ffffffff8e04c050
R13: 1ffffffff1c0980a R14: 0000000000000005 R15: ffffffff8e04c054
FS:  000055555c524500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcbe5513000 CR3: 00000000597b1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __unwind_start+0x51a/0x650 arch/x86/kernel/unwind_orc.c:704
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 perf_callchain_kernel+0x2f4/0x760 arch/x86/events/core.c:2780
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7616 [inline]
 perf_prepare_sample+0x352/0x1cb0 kernel/events/core.c:7643
 __perf_event_output kernel/events/core.c:7812 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7832
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10057
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10031
 perf_trace_preemptirq_template+0x2aa/0x360 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+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 f2 0f 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0000:ffffc90003857a00 EFLAGS: 00000206
RAX: d2d4ea57f315b700 RBX: 1ffff9200070af44 RCX: d2d4ea57f315b700
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a43c0
RBP: ffffc90003857ad0 R08: ffffffff901ef0c7 R09: 1ffffffff203de18
R10: dffffc0000000000 R11: fffffbfff203de19 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 wp_page_copy+0xf34/0x2090 mm/memory.c:3148
 handle_pte_fault mm/memory.c:4668 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x1fbd/0x4440 mm/memory.c:4883
 do_user_addr_fault+0x494/0xc90 arch/x86/mm/fault.c:1355
 handle_page_fault arch/x86/mm/fault.c:1443 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1496
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7fcbe5157723
Code: 53 48 83 ec 38 80 3d fb b8 3b 00 00 89 7c 24 18 48 89 74 24 28 0f 85 cd 09 00 00 80 3d cb ef ee 00 00 49 89 f1 41 89 d2 89 cb <c6> 05 d6 b8 3b 00 01 41 89 d7 0f 85 45 04 00 00 80 3d 96 ef ee 00
RSP: 002b:00007ffe2d2a7550 EFLAGS: 00010246
RAX: 00007fcbe5516fa0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 00007fcbe5517038 RDI: 0000000000000000
RBP: 00007fcbe5516fb0 R08: 0000000000000000 R09: 00007fcbe5517038
R10: 0000000000000003 R11: 0000000000000002 R12: 00007fcbe5516fa0
R13: 0000200000000000 R14: 00007ffe2d2a75c8 R15: 00007fcbe5516fa0
 </TASK>