rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (6 ticks this GP) idle=56d/1/0x4000000000000002 softirq=6509/6509 fqs=2099 
	(detected by 0, t=10502 jiffies, g=6921, q=1243)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4423 Comm: syz.0.25 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:trace_hardirqs_on+0x50/0x80 kernel/trace/trace_preemptirq.c:44
Code: 00 f0 00 31 ff e8 70 d7 f9 ff 81 e3 00 00 f0 00 74 0e e8 03 d4 f9 ff eb 18 e8 fc d3 f9 ff eb 1c e8 f5 d3 f9 ff 48 8b 7c 24 08 <31> f6 e8 29 00 00 00 65 c7 05 96 e4 83 7e 00 00 00 00 e8 69 7d dd
RSP: 0018:ffffc90000dd0a48 EFLAGS: 00000046
RAX: ffffffff817f4e4b RBX: 0000000000000000 RCX: ffff88807b059dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffffff89e00e46
RBP: 0000000000000000 R08: ffffffff8f0e7048 R09: ffffffff8f0e7058
R10: ffffffff8f0e7050 R11: ffffffff8f0e7043 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe124b366c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2db18ff8 CR3: 000000007457b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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 e2 f0 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: 0018:ffffc90000dd0b00 EFLAGS: 00000206
RAX: 73e9b7f8d2938800 RBX: 1ffff920001ba164 RCX: 73e9b7f8d2938800
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f740
RBP: ffffc90000dd0bd8 R08: ffff8880b913b30b R09: 1ffff11017227661
R10: dffffc0000000000 R11: ffffed1017227662 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __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+0x4eb/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 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:unwind_next_frame+0x3f2/0x1d90 arch/x86/kernel/unwind_orc.c:461
Code: 03 43 0f b6 04 2c 84 c0 48 89 14 24 0f 85 af 13 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 bf 13 00 00 41 0f b7 06 <41> 89 c7 41 83 e7 0f 66 41 83 ff 09 0f 87 d4 08 00 00 4c 89 74 24
RSP: 0018:ffffc900034df8a8 EFLAGS: 00000246
RAX: 0000000000000015 RBX: ffffc900034df968 RCX: ffffffff8da04a70
RDX: ffffffff8e0fe3a2 RSI: ffffffff8e0fe378 RDI: ffffffff81350d2c
RBP: ffffffff81cf73ad R08: 0000000000000008 R09: 0000000000000005
R10: dffffc0000000000 R11: fffff5200069bf39 R12: 1ffffffff1c1fc74
R13: dffffc0000000000 R14: ffffffff8e0fe3a6 R15: ffffffff8e0fe3a7
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x9c/0xd0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
 kmem_cache_zalloc include/linux/slab.h:728 [inline]
 lsm_inode_alloc security/security.c:595 [inline]
 security_inode_alloc+0x30/0x110 security/security.c:1033
 inode_init_always+0x8f4/0xcb0 fs/inode.c:232
 alloc_inode fs/inode.c:268 [inline]
 new_inode_pseudo+0x8e/0x210 fs/inode.c:1001
 sock_alloc net/socket.c:628 [inline]
 __sock_create+0x129/0x900 net/socket.c:1459
 sock_create net/socket.c:1551 [inline]
 __sys_socket+0xe2/0x170 net/socket.c:1593
 __do_sys_socket net/socket.c:1602 [inline]
 __se_sys_socket net/socket.c:1600 [inline]
 __x64_sys_socket+0x76/0x80 net/socket.c:1600
 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: 0033:0x7fe1268dbf79
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:00007fe124b36028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007fe126b55fa0 RCX: 00007fe1268dbf79
RDX: 000000000000003a RSI: 0000000000000003 RDI: 000000000000000a
RBP: 00007fe1269727e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe126b56038 R14: 00007fe126b55fa0 R15: 00007ffcad51a268
 </TASK>