rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=e27/1/0x4000000000000000 softirq=56315/56316 fqs=5242 
	(detected by 1, t=10502 jiffies, g=79689, q=2174)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18852 Comm: syz.0.3647 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__irq_exit_rcu+0xa/0x220 kernel/softirq.c:650
Code: e8 1b 00 00 00 48 c7 c7 80 00 0a 8a e8 8f 80 60 08 65 ff 0d 7c f7 b9 7e c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 e4 e0 48 83 ec 60 65 48 8b 04 25 28 00 00 00 48 89
RSP: 0018:ffffc90000007a10 EFLAGS: 00000002
RAX: 000000000000ae01 RBX: ffffc90000007a58 RCX: 31b0c46c0917f300
RDX: 0000000000000000 RSI: ffffffff8a59a460 RDI: ffffffff8a59a420
RBP: ffffc90000007a28 R08: dffffc0000000000 R09: fffffbfff1ad323e
R10: fffffbfff1ad323e R11: 1ffffffff1ad323d R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f14ee0d36c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110e22fff6 CR3: 0000000053e9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000380 DR2: 0000200000000380
DR3: 0000200000000380 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x4f/0xc0 arch/x86/kernel/irq_work.c:17
 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:674
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 ad 13 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:ffffc90000007b00 EFLAGS: 00000206
RAX: 31b0c46c0917f300 RBX: 1ffff92000000f64 RCX: 31b0c46c0917f300
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: ffffc90000007be0 R08: dffffc0000000000 R09: fffffbfff1ff782e
R10: fffffbfff1ff782e R11: 1ffffffff1ff782d R12: ffffffff8c120b00
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]
 ieee80211_rx_napi+0x1f4/0x360 net/mac80211/rx.c:5010
 ieee80211_rx include/net/mac80211.h:4573 [inline]
 ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:237
 tasklet_action_common+0x298/0x400 kernel/softirq.c:806
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:arch_atomic_inc arch/x86/include/asm/atomic.h:-1 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
RIP: 0010:page_dup_rmap include/linux/rmap.h:188 [inline]
RIP: 0010:copy_present_pte mm/memory.c:966 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1081 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1167 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1204 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1228 [inline]
RIP: 0010:copy_page_range+0x1651/0x3220 mm/memory.c:1301
Code: ff be 04 00 00 00 e8 9e af 10 00 f0 41 ff 07 4c 8b 74 24 28 4c 89 f7 48 83 c7 30 be 04 00 00 00 e8 84 af 10 00 f0 41 ff 46 30 <49> bf 00 00 00 00 00 fc ff df 43 80 7c 3d 00 00 4c 8b 64 24 18 74
RSP: 0018:ffffc9000347f6a0 EFLAGS: 00000206
RAX: ffffffff81ab8501 RBX: ffffea00014ea048 RCX: ffffffff81ab854c
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00014ea070
RBP: ffffc9000347f950 R08: dffffc0000000000 R09: fffff9400029d40f
R10: fffff9400029d40f R11: 1ffffd400029d40e R12: 0000000000000083
R13: 1ffffd400029d409 R14: ffffea00014ea040 R15: ffffea00014ea074
 dup_mmap kernel/fork.c:615 [inline]
 dup_mm kernel/fork.c:1466 [inline]
 copy_mm+0xc60/0x1380 kernel/fork.c:1518
 copy_process+0x17c6/0x3e00 kernel/fork.c:2290
 kernel_clone+0x219/0x930 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f14efe6bba9
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:00007f14ee0d2fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f14f00b2fa0 RCX: 00007f14efe6bba9
RDX: 0000200000000040 RSI: 0000000000000000 RDI: 0000000008001000
RBP: 00007f14efeeee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000240 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f14f00b3038 R14: 00007f14f00b2fa0 R15: 00007ffd3c95b1b8
 </TASK>