rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10460 ticks this GP) idle=0174/1/0x4000000000000000 softirq=43897/43898 fqs=5219
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   983874          0            0
rcu: 	cputime:    34745      17734           47   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=35365 q=1926 ncpus=2)
CPU: 0 UID: 0 PID: 12040 Comm: syz.1.1654 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_release+0x377/0x3d0
Code: 6f 0e 4d 89 fd 4d 89 e6 0f 83 cf fc ff ff 48 c7 c7 c0 d4 7b 8e be 04 00 00 00 e8 54 79 08 00 48 8b 1d 7d 15 da 0c 65 48 ff 03 <48> 8b 05 42 2b 5a 0e 48 85 c0 74 0f 48 8b 78 08 4c 89 e6 4c 89 fa
RSP: 0018:ffffc90000007150 EFLAGS: 00000206
RAX: 0000000000000004 RBX: ffffffff931cf190 RCX: 0000000000000000
RDX: ffffc90000007200 RSI: 0000000000000004 RDI: ffffffff8e7bd4c0
RBP: dffffc0000000000 R08: ffffc90009d2fd50 R09: 0000000000000000
R10: ffffc900000072d8 R11: fffff52000000e5d R12: ffffffff8e75e5e0
R13: ffffffff81767e95 R14: ffffffff8e75e5e0 R15: ffffffff81767e95
FS:  00007f004f9366c0(0000) GS:ffff88818de5a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc17c7d2c8 CR3: 00000001b6c22000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000050060a
Call Trace:
 <IRQ>
 unwind_next_frame+0x1aaa/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x31c/0x660
 ref_tracker_alloc+0x15a/0x4c0
 ___neigh_create+0xc9a/0x2280
 ip6_finish_output2+0x729/0x13e0
 ip6_output+0x340/0x550
 ndisc_send_skb+0xd0b/0x1670
 addrconf_rs_timer+0x395/0x6d0
 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:__schedule+0x18d/0x52d0
Code: 74 08 48 89 df e8 e3 56 80 f6 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 ca 56 80 f6 48 81 3b 9d 6e ac 57 <0f> 85 8a 1a 00 00 45 85 ed 7f 4c 48 8b 44 24 10 48 8d 58 18 48 89
RSP: 0018:ffffc90009d2f120 EFLAGS: 00000246
RAX: 1ffff920013a5000 RBX: ffffc90009d28000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c27c9e0 RDI: ffffffff8c27c9a0
RBP: ffffc90009d2f320 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff88818de5a000
R13: 0000000000000001 R14: dffffc0000000000 R15: 1ffff110242075c3
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:memset_orig+0x42/0xb0
Code: 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 48 89 07 48 89 47 08 48 89 47 10 48 89 47 18 <48> 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d8
RSP: 0018:ffffc90009d2f458 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000cc0 RCX: 0000000000000004
RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffc90009d2f520
RBP: ffffc90009d2f690 R08: ffffffff8223f47a R09: 0000000000000000
R10: ffffc90009d2f460 R11: fffffbfff2023779 R12: ffffffff8213cefb
R13: ffff888172443080 R14: ffff888172443180 R15: ffffc90009d2f460
 kasan_save_track+0x2f/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x2bc/0x650
 vm_area_dup+0x2b/0x680
 dup_mmap+0x8b1/0x1d90
 copy_mm+0x13b/0x4a0
 copy_process+0x18b6/0x3cd0
 kernel_clone+0x248/0x8e0
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f004e99c819
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:00007f004f935fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f004ec15fa0 RCX: 00007f004e99c819
RDX: 0000200000000340 RSI: 0000200000000280 RDI: 0000000000000000
RBP: 00007f004ea32c91 R08: 0000200000000440 R09: 0000200000000440
R10: 0000200000000380 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f004ec16038 R14: 00007f004ec15fa0 R15: 00007fff7bfe0838
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 88398601481 wd_nsec: 88398603511
