rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10403 ticks this GP) idle=4f7c/1/0x4000000000000000 softirq=31460/31460 fqs=5245
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1019660          0            0
rcu: 	cputime:    31255      21224           91   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=23301 q=2816 ncpus=2)
CPU: 1 UID: 0 PID: 8716 Comm: syz.7.745 Not tainted syzkaller #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:hsr_init_skb+0x160/0x6e0
Code: ff df 4c 89 7c 24 20 41 89 ec 4c 03 a3 d8 00 00 00 4c 89 a3 d8 00 00 00 4d 8d be c8 00 00 00 4c 89 f8 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 41 04 00 00 48 89 5c 24 10 41 01 2f 48 8b 44 24 08 80
RSP: 0000:ffffc900001e09d0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff8881198b9e00 RCX: ffff888021228000
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881198b9ec8
RBP: 0000000000000010 R08: ffff8881364ae1a3 R09: 1ffff11026c95c34
R10: dffffc0000000000 R11: ffffed1026c95c35 R12: ffff8881364ae050
R13: ffff888108517990 R14: ffff8881198b9e00 R15: ffff8881198b9ec8
FS:  00007fde7b5ac6c0(0000) GS:ffff8881a3c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31016ff8 CR3: 0000000123c50000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 send_hsr_supervision_frame+0x133/0xb30
 hsr_announce+0x1d5/0x360
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+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 ab 1a 14 f6 e8 76 77 4b f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0000:ffffc90006b67dc0 EFLAGS: 00000282
RAX: 21f9b923c0b3ed00 RBX: 0000000000000000 RCX: 21f9b923c0b3ed00
RDX: 0000000000000000 RSI: ffffffff8d9baa25 RDI: 0000000000000001
RBP: ffffc90006b67e70 R08: ffffffff8fa3b237 R09: 1ffffffff1f47646
R10: dffffc0000000000 R11: fffffbfff1f47647 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000d6cfb8
 irqentry_exit+0x6f/0x90
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:irqentry_exit_to_user_mode+0x51/0x120
Code: 07 85 c0 0f 85 c3 00 00 00 e8 8b 84 2f f6 65 4c 8b 34 25 08 e0 a0 92 49 8b 3e f7 c7 1e 30 02 00 74 53 49 89 ff e8 7f 83 2f f6 <4c> 89 f8 a8 18 74 08 e8 03 1b 01 00 4c 89 f8 a9 00 10 00 00 74 0b
RSP: 0000:ffffc90006b67f38 EFLAGS: 00000286
RAX: 21f9b923c0b3ed00 RBX: ffffc90006b67f58 RCX: 21f9b923c0b3ed00
RDX: 0000000000000000 RSI: ffffffff8d9baa25 RDI: ffffffff8be34280
RBP: 0000000000000000 R08: ffffffff8fa3b237 R09: 1ffffffff1f47646
R10: dffffc0000000000 R11: fffffbfff1f47647 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888021228000 R15: 0000000000000008
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7fde7a78ec29
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:00007fde7b5ac038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fde7a9d5fa0 RCX: 00007fde7a78ec29
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007fde7a811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fde7a9d6038 R14: 00007fde7a9d5fa0 R15: 00007ffe99db68e8
 </TASK>
sched: DL replenish lagged too much
