rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10258 ticks this GP) idle=5b54/1/0x4000000000000000 softirq=145459/145465 fqs=5246
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1357278         26            0
rcu: 	cputime:    30758      21741           70   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=124673 q=5122 ncpus=2)
CPU: 1 UID: 0 PID: 30793 Comm: syz.4.6443 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+0x0/0x23c0
Code: 0a cc 89 d9 80 e1 07 80 c1 03 38 c1 7c 92 48 89 df e8 74 82 b9 00 eb 88 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 81 ec 98 00 00 00 49
RSP: 0018:ffffc90000a08620 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90000a086e0 RCX: 0000000000000100
RDX: dffffc0000000000 RSI: ffffffff8187fc0a RDI: ffffc90000a08628
RBP: ffffc90000a086b0 R08: ffffc90000a086f0 R09: 000000000000000d
R10: ffffc90000a08678 R11: ffffffff81b0c390 R12: ffff8881734c3a80
R13: 00000000000000f0 R14: ffffffff81b0c390 R15: ffffc90000a08628
FS:  00007f640decc6c0(0000) GS:ffff8882a945c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561643e93048 CR3: 000000019d494000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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
 __netdev_alloc_skb+0xc1/0x810
 __ieee80211_beacon_get+0xc06/0x1880
 ieee80211_beacon_get_tim+0xbd/0x2c0
 mac80211_hwsim_beacon_tx+0x3c5/0x870
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x180
 __hrtimer_run_queues+0x53a/0xcc0
 hrtimer_run_softirq+0x182/0x5a0
 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:__schedule+0x0/0x52d0
Code: 80 f6 45 89 f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc90007b0f9b8 EFLAGS: 00000206
RAX: 0000000000319bff RBX: ffff8881734c3a80 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8def8ec0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9011b3b7 R09: 1ffffffff2023676
R10: dffffc0000000000 R11: fffffbfff2023677 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__mutex_unlock_slowpath+0x277/0x7d0
Code: 00 00 00 83 3d 8d ab 61 04 00 75 13 48 8d 3d c0 bf 64 04 48 c7 c6 80 ea cc 8b 67 48 0f b9 3a 90 48 8b 54 24 10 e9 09 ff ff ff <48> c7 c1 80 a4 27 9a 80 e1 07 80 c1 03 38 c1 0f 8c aa fe ff ff 48
RSP: 0018:ffffc90007b0fae0 EFLAGS: 00000202
RAX: 0000000000000004 RBX: ffffc90007b0fb80 RCX: ffffffff8bb039c0
RDX: 1ffffffff2023cd8 RSI: 0000000000000008 RDI: ffff88816ab33440
RBP: ffffc90007b0fbf0 R08: ffff88816ab33447 R09: 1ffff1102d566688
R10: dffffc0000000000 R11: ffffed102d566689 R12: 1ffff92000f61f64
R13: dffffc0000000000 R14: 1ffffffff344f490 R15: ffff88816ab33440
 perf_ioctl+0x18e/0x20c0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f640cf9c799
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:00007f640decc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f640d216090 RCX: 00007f640cf9c799
RDX: 0000000000000009 RSI: 0000000040042408 RDI: 0000000000000008
RBP: 00007f640d032c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f640d216128 R14: 00007f640d216090 R15: 00007fffa7a977d8
 </TASK>
sched: DL replenish lagged too much
