rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10501 ticks this GP) idle=9c2c/1/0x4000000000000000 softirq=61574/61575 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   995153          0            0
rcu: 	cputime:    33099      19400           93   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=55253 q=1252 ncpus=2)
CPU: 1 UID: 0 PID: 16328 Comm: syz.1.3038 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:handle_softirqs+0x1b0/0x870
Code: 89 64 24 30 0f b7 db 48 c7 c7 e0 a9 89 8b e8 87 f4 f5 09 65 66 c7 05 35 e2 1b 11 00 00 e8 b8 6c 42 00 fb 49 c7 c7 c0 c0 e0 8d <b8> ff ff ff ff 0f bc c3 41 89 c5 41 ff c5 0f 84 c2 03 00 00 89 5c
RSP: 0018:ffffc900001e0e40 EFLAGS: 00000286
RAX: e5e37ab47e008b00 RBX: 0000000000000002 RCX: e5e37ab47e008b00
RDX: 0000000000000002 RSI: ffffffff8d9bab7c RDI: ffffffff8be34280
RBP: ffffc900001e0f50 R08: ffffffff8fa3b337 R09: 1ffffffff1f47666
R10: dffffc0000000000 R11: fffffbfff1f47667 R12: 000000000000000a
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8de0c0c0
FS:  00007fef936216c0(0000) GS:ffff8881a3c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c385b54 CR3: 000000012c87e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __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:stack_depot_save_flags+0x163/0x860
Code: c8 31 c5 c1 c0 18 29 c5 48 8b 05 b8 05 df 14 8b 0d aa 05 df 14 21 e9 48 c1 e1 04 4c 8d 24 08 65 ff 05 c1 1d a1 0d 4c 8b 3c 08 <4d> 39 e7 44 89 2c 24 74 05 45 89 d5 eb 34 45 31 ff e9 85 00 00 00
RSP: 0018:ffffc9000442f448 EFLAGS: 00000282
RAX: ffff888135400000 RBX: 0000000000000d01 RCX: 0000000000695940
RDX: 00000000055bd588 RSI: 0000000000000001 RDI: 000000008daf99a3
RBP: 00000000ef069594 R08: 0000000035afe656 R09: 00000000e00dff4c
R10: 0000000000000012 R11: ffffffff81ac4d00 R12: ffff888135a95940
R13: 0000000000000dc0 R14: ffffc9000442f4b0 R15: ffff88810a54e7d0
 kasan_save_track+0x4f/0x80
 __kasan_kmalloc+0x93/0xb0
 __kvmalloc_node_noprof+0x30d/0x5f0
 pfifo_fast_init+0x10d/0x6b0
 qdisc_create_dflt+0x13b/0x4e0
 mq_init+0x2dc/0x660
 qdisc_create_dflt+0x13b/0x4e0
 dev_activate+0x1ce/0x1150
 __dev_open+0x69c/0x880
 __dev_change_flags+0x1ea/0x6d0
 netif_change_flags+0x88/0x1a0
 dev_change_flags+0x130/0x260
 dev_ioctl+0x7b4/0x1150
 sock_do_ioctl+0x22c/0x300
 sock_ioctl+0x576/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef9278ec29
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:00007fef93621038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fef929d5fa0 RCX: 00007fef9278ec29
RDX: 0000200000002280 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007fef92811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef929d6038 R14: 00007fef929d5fa0 R15: 00007ffecdaf9558
 </TASK>
sched: DL replenish lagged too much
