rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=b2fc/1/0x4000000000000000 softirq=13193/13194 fqs=4983
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1079959          0            0
rcu: 	cputime:    28118      24371           84   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=7261 q=3970 ncpus=2)
CPU: 1 UID: 0 PID: 5892 Comm: syz.2.3 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:unwind_next_frame+0x14c/0x2390
Code: 38 80 3c 28 00 74 08 4c 89 ef e8 4f 9d b2 00 49 8b 5d 00 48 85 db 74 23 48 81 c3 88 00 00 00 48 89 d8 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 45 1b 00 00 f6 03 03 0f 85 e4 17 00 00 49 8d 5e 35 48
RSP: 0018:ffffc90000a083d8 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffffc90004377a40 RCX: 407f0f4eadf9b700
RDX: 0000000000000000 RSI: ffffffff8bbf0e40 RDI: ffffffff8bbf0e00
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff81738c45
R10: ffffc90000a084f8 R11: ffffffff81ac31b0 R12: 1ffff92000141095
R13: ffffc90000a084f8 R14: ffffc90000a084a8 R15: ffffffff81738c45
FS:  00007fa82f2b86c0(0000) GS:ffff8882a9f38000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30912ff8 CR3: 0000000173818000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x433/0x710
 __alloc_skb+0x112/0x2d0
 __netdev_alloc_skb+0x108/0x970
 hsr_init_skb+0xef/0x6e0
 send_hsr_supervision_frame+0x143/0xcb0
 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 10 00 00 00 74 64 bf 01 00 00 00 e8 ab d6 47 f6 e8 e6 a9 7f 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: 0018:ffffc90004377a60 EFLAGS: 00000286
RAX: 407f0f4eadf9b700 RBX: 0000000000000000 RCX: 407f0f4eadf9b700
RDX: 0000000000000000 RSI: ffffffff8d70f100 RDI: 0000000000000001
RBP: ffffc90004377b10 R08: ffffffff8f7cf077 R09: 1ffffffff1ef9e0e
R10: dffffc0000000000 R11: fffffbfff1ef9e0f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200086ef4c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90
Code: 48 89 44 11 20 e9 98 ca 89 09 cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 14 25 08 80 6e 92 65 8b 0d f8 74 ae 10 81 e1 00 01 ff 00
RSP: 0018:ffffc90004377bd8 EFLAGS: 00000246
RAX: ffffffff81b42305 RBX: ffffc90004377c40 RCX: 0000000000000002
RDX: ffff88810bdd8000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004377cf0 R08: ffffc90004377c57 R09: 0000000000000000
R10: ffffc90004377c40 R11: fffff5200086ef8b R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000001 R15: 00000000ffffffff
 futex_wake+0x125/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa82e38f749
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:00007fa82f2b80e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fa82e5e5fa8 RCX: 00007fa82e38f749
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa82e5e5fac
RBP: 00007fa82e5e5fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa82e5e6038 R14: 00007ffcde0b4390 R15: 00007ffcde0b4478
 </TASK>
sched: DL replenish lagged too much
