rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2639 jiffies s: 146461 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 24224 Comm: syz.5.5277 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:trace_irq_disable include/trace/events/preemptirq.h:36 [inline] RIP: 0010:trace_hardirqs_off_finish+0x81/0x180 kernel/trace/trace_preemptirq.c:67 Code: 3b 1d 93 1c 97 0c 73 33 41 89 de c1 eb 06 48 8d 3c dd 28 0c 20 8e be 08 00 00 00 e8 c9 a2 4a 00 4c 0f a3 35 69 1a 97 0c 73 09 5a 8f e3 ff 84 c0 74 0c 5b 41 5c 41 5e 41 5f c3 0f 0b eb c9 0f RSP: 0018:ffffc900000079c8 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8188f1b7 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e200c28 RBP: 0000000000000000 R08: ffffffff8e200c2f R09: 1ffffffff1c40185 R10: dffffc0000000000 R11: fffffbfff1c40186 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f9ba8ae56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa38e1456b8 CR3: 000000002ec71000 CR4: 00000000003506f0 DR0: 0000200000000180 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: irqentry_enter+0x33/0x50 kernel/entry/common.c:382 sysvec_irq_work+0xa/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728 RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685 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 82 22 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206 RAX: d66b7d5fa2966b00 RBX: 1ffff92000000f60 RCX: d66b7d5fa2966b00 RDX: dffffc0000000000 RSI: ffffffff8a8c19a0 RDI: ffffffff8adf1b60 RBP: ffffc90000007bb0 R08: ffff8880b8e3580b R09: 1ffff110171c6b01 R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:unwind_next_frame+0xe79/0x20b0 arch/x86/kernel/unwind_orc.c:-1 Code: 0c 00 0f 85 4a 0a 00 00 c6 05 07 68 d2 0c 01 48 c7 c7 a0 8c 89 8a be 03 00 00 00 48 8b 54 24 68 e8 1e 29 ea 08 e9 28 0a 00 00 <4c> 89 7c 24 40 4c 89 74 24 70 4c 89 64 24 20 4c 8d 7b 08 4c 89 e8 RSP: 0018:ffffc90005747810 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffc900057478e8 RCX: ffffffff8e9757c0 RDX: ffffc90005747f58 RSI: ffffffff8e9757b0 RDI: ffffffff81392adf RBP: ffffffff8f3ae6f6 R08: 0000000000000004 R09: 000000000000000c R10: dffffc0000000000 R11: fffff52000ae8f29 R12: ffffffff8f3ae6f2 R13: dffffc0000000000 R14: ffffffff8f3ae6f7 R15: 1ffffffff1e75cde 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:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 ____kasan_kmalloc mm/kasan/common.c:375 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:384 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] apparmor_sk_alloc_security+0x74/0x100 security/apparmor/lsm.c:812 security_sk_alloc+0x6a/0xa0 security/security.c:2332 sk_prot_alloc+0x101/0x210 net/core/sock.c:2055 sk_alloc+0x36/0x340 net/core/sock.c:2108 __netlink_create+0x6b/0x2d0 net/netlink/af_netlink.c:629 netlink_create+0x3a7/0x510 net/netlink/af_netlink.c:692 __sock_create+0x4a2/0x940 net/socket.c:1549 sock_create net/socket.c:1605 [inline] __sys_socket_create net/socket.c:1642 [inline] __sys_socket+0xc4/0x190 net/socket.c:1670 __do_sys_socket net/socket.c:1683 [inline] __se_sys_socket net/socket.c:1681 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1681 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9ba7b9ce59 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:00007f9ba8ae5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f9ba7e15fa0 RCX: 00007f9ba7b9ce59 RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f9ba7c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9ba7e16038 R14: 00007f9ba7e15fa0 R15: 00007ffe99969088