rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (3 ticks this GP) idle=2b7/1/0x4000000000000000 softirq=100884/100884 fqs=2101 
	(detected by 1, t=10504 jiffies, g=130825, q=364)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31242 Comm: syz.4.9163 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:irq_work_run+0x82/0xe0 kernel/irq_work.c:187
Code: 3d 03 00 48 03 3b e8 7d 00 00 00 e8 78 11 35 08 89 c5 89 c3 bf 08 00 00 00 89 c6 e8 e8 20 f4 ff 83 fd 07 77 4c e8 7e 1d f4 ff <48> 8d 1c dd 20 d8 e2 8b 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08
RSP: 0018:ffffc90000007a08 EFLAGS: 00000006
RAX: ffffffff8184d522 RBX: 0000000000000000 RCX: ffff88802422d940
RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffff8880b903b1fb R09: 1ffff1101720763f
R10: dffffc0000000000 R11: ffffed1017207640 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f413c3316c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17fe802660 CR3: 0000000044c4c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x4a/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+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 c2 22 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: 0018:ffffc90000007b00 EFLAGS: 00000206
RAX: 310c569924899e00 RBX: 1ffff92000000f64 RCX: 310c569924899e00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a79c980
RBP: ffffc90000007bd8 R08: ffffffff901cb16f R09: 1ffffffff203962d
R10: dffffc0000000000 R11: fffffbfff203962e 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]
 ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831
 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4ea/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:is_cow_mapping include/linux/mm.h:1346 [inline]
RIP: 0010:copy_present_pte mm/memory.c:974 [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+0x1885/0x32c0 mm/memory.c:1301
Code: 00 4c 8b bc 24 b8 00 00 00 41 83 e7 28 bf 20 00 00 00 4c 89 fe e8 2b cc cb ff 44 89 f3 83 e3 02 31 ff 48 89 de e8 1b cc cb ff <49> 83 ff 20 75 29 48 85 db 74 24 e8 2b c8 cb ff 48 8b 5c 24 48 48
RSP: 0018:ffffc9000310f6c0 EFLAGS: 00000297
RAX: ffffffff81ad2a65 RBX: 0000000000000002 RCX: ffff88802422d940
RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000310f970 R08: ffffea0000915507 R09: 1ffffd4000122aa0
R10: dffffc0000000000 R11: fffff94000122aa1 R12: 0000000000000083
R13: ffffea0000915500 R14: 8000000024554007 R15: 0000000000000028
 dup_mmap kernel/fork.c:616 [inline]
 dup_mm kernel/fork.c:1467 [inline]
 copy_mm+0xc61/0x13d0 kernel/fork.c:1519
 copy_process+0x17fb/0x3ec0 kernel/fork.c:2291
 kernel_clone+0x23f/0x990 kernel/fork.c:2681
 __do_sys_clone kernel/fork.c:2798 [inline]
 __se_sys_clone kernel/fork.c:2782 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2782
 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: 0033:0x7f413e0d7e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f413c330fd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f413e350fa0 RCX: 00007f413e0d7e59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000c0126080
RBP: 00007f413e16de6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f413e351038 R14: 00007f413e350fa0 R15: 00007fffbf95d2f8
 </TASK>