rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (4 ticks this GP) idle=fa9/1/0x4000000000000002 softirq=23754/23754 fqs=2101 
	(detected by 1, t=10505 jiffies, g=33601, q=1734)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9110 Comm: syz.7.1182 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:trace_irq_disable include/trace/events/preemptirq.h:36 [inline]
RIP: 0010:trace_hardirqs_off_finish+0xb8/0x1f0 kernel/trace/trace_preemptirq.c:67
Code: dd e8 06 8a 8d be 08 00 00 00 e8 f3 eb 3e 00 31 f6 4c 0f a3 35 f1 8e 0a 0c 0f 92 c3 40 0f 92 c6 bf 02 00 00 00 e8 48 d3 f9 ff <84> db 74 10 e8 4f 7c e5 ff 84 c0 74 1c e8 d6 d0 f9 ff eb 05 e8 cf
RSP: 0018:ffffc900000076c8 EFLAGS: 00000046
RAX: ffffffff817f7808 RBX: 0000000000000001 RCX: ffff8880230a9dc0
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8d8a06ef R09: 1ffffffff1b140dd
R10: dffffc0000000000 R11: fffffbfff1b140de R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007ffa5cf236c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95e1e01dac CR3: 0000000063dd5000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irqentry_enter+0x33/0x50 kernel/entry/common.c:384
 sysvec_irq_work+0xa/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+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 f2 cc 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:ffffc900000077c0 EFLAGS: 00000206
RAX: 98d7da6aeb78d800 RBX: 1ffff92000000efc RCX: 98d7da6aeb78d800
RDX: dffffc0000000000 RSI: ffffffff8a2b3180 RDI: ffffffff8a7a09c0
RBP: ffffc900000078a0 R08: ffffffff901d81c7 R09: 1ffffffff203b038
R10: dffffc0000000000 R11: fffffbfff203b039 R12: ffffffff8c323800
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+0xde0/0x1500 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 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:__init_waitqueue_head+0x1/0x150 kernel/sched/wait.c:10
Code: 00 00 45 31 c0 45 31 c9 68 b0 3b 5a 81 e8 57 e9 02 00 48 83 c4 08 c3 66 90 48 c7 c6 d0 3b 5a 81 e9 94 6b 03 00 00 00 cc cc 55 <41> 57 41 56 41 55 41 54 53 50 49 89 d6 49 89 f7 48 89 fb 49 bc 00
RSP: 0018:ffffc900022a7de8 EFLAGS: 00000283
RAX: ffffffff87db58c4 RBX: ffff88805eed3000 RCX: 0000000000080000
RDX: ffffffff96699b40 RSI: ffffffff8b1e9040 RDI: ffff88805eed3040
RBP: ffffc900022a7eb0 R08: 0000000000000600 R09: 1ffffffff1b140dd
R10: dffffc0000000000 R11: fffffbfff1b140de R12: dffffc0000000000
R13: 0000000000000002 R14: ffffffff8b1e8ec0 R15: ffff888017a76000
 sock_alloc_inode+0x3b/0xb0 net/socket.c:308
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x5f/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: 0033:0x7ffa5ecc9e59
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:00007ffa5cf23028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ffa5ef42fa0 RCX: 00007ffa5ecc9e59
RDX: 0000000000000010 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007ffa5ed5fd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffa5ef43038 R14: 00007ffa5ef42fa0 R15: 00007ffd826c9c78
 </TASK>