rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=c97/1/0x4000000000000002 softirq=102238/102239 fqs=2100 
	(detected by 1, t=10505 jiffies, g=143405, q=980)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1772 Comm: syz.1.11229 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:707
Code: e9 a5 03 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 a5 02 00 00 48 89 c4 48 89 e7 e8 7a 3c dc ff e9 85 03 00 00 90 90 90 90 90 <0f> 01 ca fc 6a ff e8 85 02 00 00 48 89 c4 48 89 e7 e8 4a 41 dc ff
RSP: 0018:ffffc90000007ad8 EFLAGS: 00000006
RAX: f2fe7b75c2af7400 RBX: 1ffff92000000f64 RCX: f2fe7b75c2af7400
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc90000007bd8 R08: ffffffff901d40cf R09: 1ffffffff203a819
R10: dffffc0000000000 R11: fffffbfff203a81a R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007fa36d2976c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f517a76b8 CR3: 00000000621ee000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
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 12 f2 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:ffffc90000007b00 EFLAGS: 00000206
 __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+0x4f2/0xb70 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:stack_depot_save+0x184/0x440 lib/stackdepot.c:337
Code: eb 08 4d 8b 3f 4d 85 ff 74 4c 41 39 6f 08 75 f2 41 39 5f 0c 75 ec 31 f6 4c 8b 04 f7 4d 3b 44 f7 18 75 df 48 ff c6 39 f1 75 ee <4d> 85 ff 74 04 41 8b 47 10 65 48 8b 0c 25 28 00 00 00 48 3b 4c 24
RSP: 0018:ffffc9000313f480 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000010 RCX: 0000000000000010
RDX: 0000000000000cc0 RSI: 0000000000000010 RDI: ffffc9000313f4e0
RBP: 00000000d4c2df7d R08: ffffffff89e000ca R09: 0000000000000002
R10: 00000000c9b15226 R11: 00000000111d80ec R12: ffff88802a1c85a0
R13: ffff88823b000000 R14: 000000000002df7d R15: ffff888077867b20
 kasan_save_stack mm/kasan/common.c:40 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xcc/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:607 [inline]
 __memcg_init_list_lru_node mm/list_lru.c:339 [inline]
 memcg_init_list_lru_node mm/list_lru.c:362 [inline]
 memcg_init_list_lru mm/list_lru.c:440 [inline]
 __list_lru_init+0x50a/0xa50 mm/list_lru.c:607
 alloc_super+0x76c/0x950 fs/super.c:272
 sget_fc+0x2dc/0x720 fs/super.c:554
 vfs_get_super fs/super.c:1167 [inline]
 get_tree_nodev+0x26/0x160 fs/super.c:1202
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 fc_mount+0x18/0xa0 fs/namespace.c:1005
 mq_create_mount ipc/mqueue.c:487 [inline]
 mq_init_ns+0x39d/0x510 ipc/mqueue.c:1703
 create_ipc_ns ipc/namespace.c:58 [inline]
 copy_ipcs+0x2e3/0x4b0 ipc/namespace.c:84
 create_new_namespaces+0x212/0x6f0 kernel/nsproxy.c:90
 copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
 copy_process+0x1834/0x3e20 kernel/fork.c:2293
 kernel_clone+0x23f/0x990 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x19a/0x210 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: 0033:0x7fa36f03d799
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:00007fa36d296fd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fa36f2b6fa0 RCX: 00007fa36f03d799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000002c9a4080
RBP: 00007fa36f0d3bd9 R08: ffffffffff600000 R09: ffffffffff600000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fa36f2b7038 R14: 00007fa36f2b6fa0 R15: 00007ffece33ede8
 </TASK>