rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=0e1/1/0x4000000000000000 softirq=7730/7731 fqs=2100 
	(detected by 1, t=10503 jiffies, g=9217, q=1615)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4747 Comm: syz.3.125 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:arch_static_branch_jump kernel/sched/clock.c:366 [inline]
RIP: 0010:sched_clock_stable kernel/sched/clock.c:110 [inline]
RIP: 0010:sched_clock_cpu+0x3/0x3c0 kernel/sched/clock.c:370
Code: 5c 41 5d 41 5e 41 5f c3 48 c7 c7 e0 29 fe 8b 48 89 de e8 60 05 a7 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 20 66 90 e8 2b 60 d7 ff 48 03 05 0c
RSP: 0018:ffffc90000007930 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffff8880b9027740 RCX: 65a28e38bfd4c400
RDX: 0000000000000000 RSI: ffffffff8a59a220 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad31be
R10: fffffbfff1ad31be R11: 1ffffffff1ad31bd R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888075fabb80 R15: ffffffff8bbc1820
FS:  00007f0bceeaa6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f62b50f98 CR3: 00000000526bc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:61
 account_hardirq_exit include/linux/vtime.h:159 [inline]
 __irq_exit_rcu+0x8d/0x220 kernel/softirq.c:656
 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:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:rcu_read_unlock_special+0xd5/0x480 kernel/rcu/tree_plugin.h:635
Code: 00 48 3b 84 24 80 00 00 00 0f 85 33 03 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 49 89 ff 48 c7 44 24 60 00 00 00 00 <9c> 8f 44 24 60 4c 8b 64 24 60 fa 41 f7 c4 00 02 00 00 74 0f e8 72
RSP: 0018:ffffc90000007ae0 EFLAGS: 00000246
RAX: f2f2f200f1f1f1f1 RBX: 1ffff92000000f60 RCX: ffff888075fabb80
RDX: 0000000000000100 RSI: ffffffff8a59a220 RDI: ffff888075fabb80
RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ad31be
R10: fffffbfff1ad31be R11: 1ffffffff1ad31bd R12: 1ffff1100ebf57f7
R13: dffffc0000000000 R14: 0000000080000100 R15: ffff888075fabb80
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [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:1690 [inline]
 __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771
 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:next_tid mm/slub.c:2256 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3204 [inline]
RIP: 0010:slab_alloc mm/slub.c:3228 [inline]
RIP: 0010:__kmalloc+0xc4/0x330 mm/slub.c:4403
Code: 49 8b 7d 00 40 f6 c7 0f 0f 85 75 02 00 00 48 8d 47 08 48 89 f9 48 83 c9 08 48 39 c1 0f 85 63 02 00 00 41 8b 45 28 49 8b 1c 04 <48> 8d 4a 08 4c 89 e0 65 48 0f c7 0f 0f 94 c0 a8 01 74 9c 4c 89 64
RSP: 0018:ffffc90002eef7a8 EFLAGS: 00000246
RAX: 0000000000000008 RBX: ffff888019fd14a0 RCX: 000000000003dc88
RDX: 00000000000147f8 RSI: 0000000000000010 RDI: 000000000003dc80
RBP: 0000000000000dc0 R08: dffffc0000000000 R09: fffffbfff1ad31be
R10: fffffbfff1ad31be R11: 1ffffffff1ad31bd R12: ffff888019fd14c0
R13: ffff8880168413c0 R14: 0000000000000010 R15: ffff8880168413c0
 kmalloc include/linux/slab.h:609 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 ops_init+0x8b/0x600 net/core/net_namespace.c:128
 setup_net+0x38d/0x9f0 net/core/net_namespace.c:333
 copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
 create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
 copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
 copy_process+0x180f/0x3e00 kernel/fork.c:2293
 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: 0033:0x7f0bd0c42be9
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:00007f0bceea9fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f0bd0e79fa0 RCX: 00007f0bd0c42be9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000061000600
RBP: 00007f0bd0cc5e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f0bd0e7a038 R14: 00007f0bd0e79fa0 R15: 00007fff23149878
 </TASK>