rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=333/1/0x4000000000000002 softirq=44230/44231 fqs=5245 
	(detected by 1, t=10502 jiffies, g=61301, q=1843)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15139 Comm: syz.8.2719 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:irq_work_single kernel/irq_work.c:155 [inline]
RIP: 0010:irq_work_run_list+0x1a9/0x330 kernel/irq_work.c:177
Code: 00 00 00 00 fc ff df 41 0f b6 04 34 84 c0 48 89 54 24 08 0f 85 e8 00 00 00 c7 02 01 00 00 00 49 8d 7e 10 48 89 f8 48 c1 e8 03 <80> 3c 30 00 74 05 e8 cc 98 38 00 4c 89 f7 41 ff 56 10 48 b8 00 00
RSP: 0018:ffffc900000075e0 EFLAGS: 00000802
RAX: 1ffff11017207640 RBX: ffff8880b903b1f8 RCX: ffff88805c025940
RDX: ffff88805c026418 RSI: dffffc0000000000 RDI: ffff8880b903b200
RBP: ffffc90000007698 R08: dffffc0000000000 R09: ffffed1017207640
R10: ffffed1017207640 R11: 1ffff1101720763f R12: 1ffff1100b804c83
R13: 0000000000000022 R14: ffff8880b903b1f0 R15: 0000000000000023
FS:  00007fab6c0dc6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000e000 CR3: 0000000077d6c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irq_work_run+0x63/0xe0 kernel/irq_work.c:186
 __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+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 6d 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000077a0 EFLAGS: 00000206
RAX: dafc59bdc0281d00 RBX: 1ffff92000000ef8 RCX: dafc59bdc0281d00
RDX: dffffc0000000000 RSI: ffffffff8a0b18a0 RDI: ffffffff8a59a880
RBP: ffffc90000007880 R08: dffffc0000000000 R09: fffffbfff1ff7a39
R10: fffffbfff1ff7a39 R11: 1ffffffff1ff7a38 R12: ffffffff8c120c00
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]
 ndisc_send_skb+0xdc4/0x14a0 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3956
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 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:apparmor_socket_post_create+0x0/0x5f0 security/apparmor/lsm.c:858
Code: 5d c3 e8 93 7d d6 fd 48 c7 c7 c0 0d 54 8a 48 c7 c6 07 fa a6 8b e8 e0 3a fd 05 0f 0b e9 3c ff ff ff 66 0f 1f 84 00 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 50 44 89 c5 49 89 ff 48 bb 00 00 00
RSP: 0018:ffffc90002fcf6c0 EFLAGS: 00000246
RAX: 1ffffffff1778b23 RBX: ffffffff8bbc5918 RCX: 0000000000000000
RDX: 0000000000000002 RSI: 0000000000000002 RDI: ffff888072784200
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880773cc7b8
R10: ffffed100ee798f9 R11: 1ffff1100ee798f7 R12: ffff888072784200
R13: ffffffff8bbc5900 R14: 0000000000000002 R15: 0000000000000002
 security_socket_post_create+0x7c/0xb0 security/security.c:2220
 __sock_create+0x514/0x900 net/socket.c:1507
 udp_sock_create4+0xbb/0x4b0 net/ipv4/udp_tunnel_core.c:20
 udp_sock_create include/net/udp_tunnel.h:59 [inline]
 rxrpc_open_socket net/rxrpc/local_object.c:132 [inline]
 rxrpc_lookup_local+0xca9/0x1520 net/rxrpc/local_object.c:227
 rxrpc_sendmsg+0x3f1/0x890 net/rxrpc/af_rxrpc.c:542
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
 ___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
 __sys_sendmsg net/socket.c:2519 [inline]
 __do_sys_sendmsg net/socket.c:2528 [inline]
 __se_sys_sendmsg+0x190/0x250 net/socket.c:2526
 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: 0033:0x7fab6de74fc9
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:00007fab6c0dc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fab6e0cbfa0 RCX: 00007fab6de74fc9
RDX: 0000000004048800 RSI: 0000200000000080 RDI: 000000000000000a
RBP: 00007fab6def7f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab6e0cc038 R14: 00007fab6e0cbfa0 R15: 00007fffb6cde718
 </TASK>