rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=98f4/1/0x4000000000000000 softirq=45263/45273 fqs=4995
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1237394          0            0
rcu: 	cputime:    30876      21603           76   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=39117 q=6235 ncpus=2)
CPU: 1 UID: 0 PID: 12101 Comm: syz.6.1860 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:__rcu_read_unlock+0x0/0xe0
Code: 89 d9 80 e1 07 80 c1 03 38 c1 7c dc 48 89 df e8 36 1a 7c 00 eb d2 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 41 55 41 54 53 49 bf 00 00 00 00 00 fc ff
RSP: 0000:ffffc900001e04d0 EFLAGS: 00000286
RAX: 439c9129df811a00 RBX: ffffffff90408001 RCX: 439c9129df811a00
RDX: 0000000000000002 RSI: ffffffff8dba5d03 RDI: ffffffff8be33300
RBP: dffffc0000000000 R08: ffffc900001e0908 R09: 0000000000000000
R10: ffffc900001e05f8 R11: fffff5200003c0c1 R12: ffffc900001e0918
R13: ffffc900001d9000 R14: ffffc900001e05a8 R15: ffffffff8172c195
FS:  00007f59fb1f66c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c284924 CR3: 000000002e350000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x19ae/0x2390
 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+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 new_skb+0x2f/0x2b0
 aoecmd_cfg+0x28b/0x7c0
 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:__schedule+0x1a2/0x4cc0
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c6 01 a9 f6 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 a4 01 a9 f6 48 81 3b 9d 6e ac 57 0f 85 b7 18 00
RSP: 0000:ffffc90003f7fba0 EFLAGS: 00000246
RAX: 1ffff920007ef000 RBX: ffffc90003f78000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: ffffc90003f7fdb0 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff8881a3c1c000
R13: 0000000000000001 R14: ffff8881090b3980 R15: 1ffff11026cc7551
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 ab 32 b7 f5 cc
RSP: 0000:ffffc90003f7ff30 EFLAGS: 00000286
RAX: 439c9129df811a00 RBX: ffffc90003f7ff58 RCX: 439c9129df811a00
RDX: 0000000000000000 RSI: ffffffff8d9b6a7d RDI: ffffffff8be33300
RBP: 0000000000000000 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881090b3980 R15: 0000000000000008
 irqentry_exit_to_user_mode+0x51/0x120
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f59fce4e1e2
Code: eb 9d 66 0f 1f 44 00 00 48 89 df 31 f6 31 c0 e8 74 f2 13 00 48 81 c4 90 00 00 00 48 98 5b c3 66 0f 1f 84 00 00 00 00 00 41 54 <55> 53 48 89 fb 48 81 ec d0 00 00 00 48 89 74 24 28 48 89 54 24 30
RSP: 002b:00007f59fb1f6050 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f59fcff8958
RDX: 00000000000053a0 RSI: 0000000000000000 RDI: 00007f59fd01317e
RBP: 00007f59fcff8958 R08: 0000000000000000 R09: 7fffffffffffffff
R10: 3fffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59fd1d6038 R14: 00007f59fd1d5fa0 R15: 00007ffd423d8d08
 </TASK>
