rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=537c/1/0x4000000000000000 softirq=13680/16112 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1205180          1            0
rcu: 	cputime:    25673      26806           76   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=6761 q=2864 ncpus=2)
CPU: 0 UID: 0 PID: 6065 Comm: syz.0.81 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_core+0x126/0x1710
Code: f0 e8 a1 8f be 08 00 00 00 e8 76 97 7a 00 4c 0f a3 35 be 31 f9 0d 0f 83 1e 12 00 00 4c 8d b3 c0 bf a1 92 48 8b 3d 9a e6 f8 0d <e8> 45 88 fe ff 49 8d 5e 13 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84
RSP: 0018:ffffc90000007be0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: ffff8880b861f000 RCX: ffffffff81a8b72a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b8c3ae0
RBP: ffffc90000007e30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff88804b03afe0 R14: ffff88804b03afc0 R15: ffffffff8e144480
FS:  00007fd86b87b6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd86b85ad58 CR3: 0000000109f42000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000432e7c0 EFLAGS: 00000282
RAX: 097f9db28edafa00 RBX: 0000000000000000 RCX: 097f9db28edafa00
RDX: 0000000000000006 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc9000432e860 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000865cf8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__local_bh_enable_ip+0x135/0x1c0
Code: 8b e8 8f f2 e8 09 65 66 8b 05 6f 5f 1a 11 66 85 c0 75 5a bf 01 00 00 00 e8 a8 32 0b 00 e8 33 04 42 00 fb 65 8b 05 4b 5f 1a 11 <85> c0 75 05 e8 82 f5 ad ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc9000432e920 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 097f9db28edafa00
RDX: 0000000000000006 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: ffffc9000432e9b8 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff895a7b03
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000865d24
 __neigh_ifdown+0x1c3/0x400
 neigh_ifdown+0x1f/0x30
 ndisc_netdev_event+0xc8/0x4d0
 notifier_call_chain+0x1b6/0x3e0
 __dev_notify_flags+0x18d/0x2e0
 netif_change_flags+0xe8/0x1a0
 do_setlink+0xc55/0x41c0
 rtnl_newlink+0x160b/0x1c70
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd86a98e9a9
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:00007fd86b87b038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd86abb5fa0 RCX: 00007fd86a98e9a9
RDX: 0000000004000000 RSI: 0000200000000680 RDI: 000000000000000d
RBP: 00007fd86aa10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd86abb5fa0 R15: 00007ffce8765208
 </TASK>
sched: DL replenish lagged too much
