rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=8cd/1/0x4000000000000002 softirq=47873/47878 fqs=2100 
	(detected by 1, t=10506 jiffies, g=60041, q=2161)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15119 Comm: syz.0.10038 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:preempt_latency_stop kernel/sched/core.c:5526 [inline]
RIP: 0010:preempt_count_sub+0x51/0x160 kernel/sched/core.c:5546
Code: db 14 00 75 25 65 8b 05 65 fd af 7e 89 c1 81 e1 ff ff ff 7f 39 cf 7f 25 81 ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 53 <65> 8b 05 40 fd af 7e f7 df 65 01 3d 37 fd af 7e 5b 5d c3 e8 b7 67
RSP: 0000:ffffc90005a76f68 EFLAGS: 00000002
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffc90005a77101 RSI: ffffc90005a773b0 RDI: 0000000000000001
RBP: ffffc90005a77148 R08: ffffc90005a7715f R09: ffffc90005a77150
R10: dffffc0000000000 R11: fffff52000b4ee2c R12: ffffc90005a70000
R13: dffffc0000000000 R14: ffffc90005a77110 R15: ffffc90005a773c0
FS:  00005555889f6500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000059b1e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unwind_next_frame+0x1296/0x1d90 arch/x86/kernel/unwind_orc.c:616
 __unwind_start+0x5bb/0x740 arch/x86/kernel/unwind_orc.c:704
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 perf_callchain_kernel+0x2f0/0x720 arch/x86/events/core.c:-1
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7606 [inline]
 perf_prepare_sample+0x352/0x1cd0 kernel/events/core.c:7633
 __perf_event_output kernel/events/core.c:7802 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 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 32 e1 9c 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:ffffc90005a77a00 EFLAGS: 00000206
RAX: 20b6b71b45f33200 RBX: 1ffff92000b4ef44 RCX: 20b6b71b45f33200
RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: ffffffff8a79fe00
RBP: ffffc90005a77ad0 R08: ffffffff901d50c7 R09: 1ffffffff203aa18
R10: dffffc0000000000 R11: fffffbfff203aa19 R12: ffffffff8c323000
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+0xef5/0x2050 mm/memory.c:3148
 handle_pte_fault mm/memory.c:4668 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x1f06/0x4410 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 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: 0033:0x7f37dfd1a543
Code: 53 48 83 ec 38 80 3d db ca 3a 00 00 89 7c 24 18 48 89 74 24 28 0f 85 cd 09 00 00 80 3d aa 01 ee 00 00 49 89 f1 41 89 d2 89 cb <c6> 05 b6 ca 3a 00 01 41 89 d7 0f 85 45 04 00 00 80 3d 76 01 ee 00
RSP: 002b:00007ffc2e7457f0 EFLAGS: 00010246
RAX: 00007f37e00cafa0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 00007f37e00cb038 RDI: 0000000000000000
RBP: 00007f37e00cafb0 R08: 0000000000000000 R09: 00007f37e00cb038
R10: 0000000000000003 R11: 0000000000000000 R12: 00007f37e00cafa0
R13: 0000200000000000 R14: 00007ffc2e745868 R15: 00007f37e00cafa0
 </TASK>