clocksource: Long readout interval, skipping watchdog check: cs_nsec: 86219461414 wd_nsec: 86219463357
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10477 ticks this GP) idle=7ce4/1/0x4000000000000000 softirq=79725/79728 fqs=5122
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   966675          4            0
rcu: 	cputime:    36409      16089           51   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=60237 q=3188 ncpus=2)
CPU: 1 UID: 0 PID: 16478 Comm: syz.2.2750 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:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 45 45 0d 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 c1 d2 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d fe 7a 73
RSP: 0018:ffffc90000a085b8 EFLAGS: 00000286
RAX: 32e4e647e36e8a00 RBX: 0000000000000246 RCX: 0000000000000102
RDX: 00000000c0eef977 RSI: ffffffff8e169ed2 RDI: ffffffff8c27ca00
RBP: 0000000000000000 R08: ffffffff81767e95 R09: ffffffff8e75e5e0
R10: ffffc90000a08718 R11: ffffffff81b0c390 R12: 0000000000000002
R13: ffffffff8e75e5e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd5af66d6c0(0000) GS:ffff8882a945a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000019c81e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x1d0/0x7d0
 new_skb+0x2f/0x2b0
 aoecmd_cfg+0x2b1/0x800
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 1d c1 f0 f5 f7 c3 00 02 00 00 74 05 e8 d0 1a 1c f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e4 7d e2 f5 65 8b 05 0d f0 6a 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc900031f7b20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000283 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8def9047 RDI: 0000000000000001
RBP: ffff88816f4d9d40 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: dffffc0000000000
R13: 1ffff110478c7788 R14: ffff88816f4da7b8 R15: ffff88823c63bc40
 try_to_wake_up+0x7be/0x1390
 wake_up_q+0x85/0xd0
 futex_wake+0x49a/0x580
 do_futex+0x395/0x420
 __se_sys_futex+0x3a8/0x450
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd5ae79c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd5af66d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd5aea15fa8 RCX: 00007fd5ae79c819
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd5aea15fac
RBP: 00007fd5aea15fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd5aea16038 R14: 00007fff3bb40560 R15: 00007fff3bb40648
 </TASK>
