rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=711/1/0x4000000000000000 softirq=8605/8606 fqs=5250 
	(detected by 1, t=10502 jiffies, g=8757, q=610)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5160 Comm: syz.0.300 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:check_preemption_disabled+0x18/0x110 lib/smp_processor_id.c:14
Code: 00 cc 48 c7 c7 20 a8 59 8a 48 c7 c6 60 a8 59 8a eb 00 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 05 49 b7 58 76 65 8b 0d b2 11 59 76 f7 c1 ff ff ff 7f 74 1f
RSP: 0018:ffffc900000076a8 EFLAGS: 00000082
RAX: d307a913cac26800 RBX: ffffc900000076f8 RCX: ffff888020de3b80
RDX: 0000000000000100 RSI: ffffffff8a057f20 RDI: ffffffff8a59a880
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad334e
R10: fffffbfff1ad334e R11: 1ffffffff1ad334d R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f79ac5b86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 00000000606ed000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kvm_set_cpu_l1tf_flush_l1d arch/x86/include/asm/hardirq.h:71 [inline]
 sysvec_irq_work+0x18/0xc0 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: d307a913cac26800 RBX: 1ffff92000000ef8 RCX: d307a913cac26800
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:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
RIP: 0010:page_expected_state mm/page_alloc.c:1160 [inline]
RIP: 0010:check_new_page mm/page_alloc.c:2330 [inline]
RIP: 0010:check_new_pages mm/page_alloc.c:2381 [inline]
RIP: 0010:rmqueue_buddy mm/page_alloc.c:3639 [inline]
RIP: 0010:rmqueue mm/page_alloc.c:3748 [inline]
RIP: 0010:get_page_from_freelist+0xe9a/0x1c60 mm/page_alloc.c:4189
Code: 00 00 00 e8 e8 97 f3 ff 83 fb 04 0f 84 0e 03 00 00 4c 89 f7 4c 89 fe e8 04 27 00 08 41 bf 01 00 00 00 45 31 f6 4f 8d 6c 34 30 <4c> 89 ef be 04 00 00 00 e8 49 9f 09 00 4c 89 e8 48 c1 e8 03 48 ba
RSP: 0018:ffffc9000344f260 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea000172ee00 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffea000172ee38
RBP: ffffc9000344f470 R08: dffffc0000000000 R09: fffff940002e5dc7
R10: fffff940002e5dc7 R11: 1ffffd40002e5dc6 R12: ffffea000172e000
R13: ffffea000172ee70 R14: 0000000000000e40 R15: 000000000000003a
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 __alloc_pages_node include/linux/gfp.h:570 [inline]
 alloc_pages_node include/linux/gfp.h:584 [inline]
 kmalloc_large_node+0x7d/0x190 mm/slub.c:4426
 __kmalloc_node_track_caller+0x22e/0x3a0 mm/slub.c:4949
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x22c/0x750 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1162 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 netlink_ack+0x3a6/0xb60 net/netlink/af_netlink.c:2442
 netlink_rcv_skb+0x265/0x430 net/netlink/af_netlink.c:2513
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x774/0x920 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1918
 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: 0033:0x7f79ae350fc9
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:00007f79ac5b8038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f79ae5a7fa0 RCX: 00007f79ae350fc9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000008
RBP: 00007f79ae3d3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f79ae5a8038 R14: 00007f79ae5a7fa0 R15: 00007ffd2900c2d8
 </TASK>