INFO: rcu_preempt self-detected stall on CPU
	0-...: (1 GPs behind) idle=9ae/140000000000002/0 softirq=36646/36647 fqs=17 
	 (t=10501 jiffies g=9782 c=9781 q=244)
NMI backtrace for cpu 0
CPU: 0 PID: 17515 Comm: syz-executor.5 Not tainted 4.14.193-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
 rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
 print_cpu_stall kernel/rcu/tree.c:1542 [inline]
 check_cpu_stall kernel/rcu/tree.c:1610 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
 update_process_times+0x28/0xa0 kernel/time/timer.c:1591
 tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
RIP: 0010:init_kernel_text kernel/extable.c:67 [inline]
RIP: 0010:__kernel_text_address+0xd/0x30 kernel/extable.c:115
RSP: 0018:ffff8880aea076e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 000000000045d239 RCX: 1ffff11013e7d1fa
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000286
RBP: ffff8880aea07760 R08: 0000000000000000 R09: 0000000000000005
R10: 0000000000000000 R11: ffff88809f3e8680 R12: ffff8880aea077a0
R13: 0000000000000000 R14: ffff888215c7f0c0 R15: 0000000000000180
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:252 [inline]
 unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:247
 __save_stack_trace+0xa0/0x160 arch/x86/kernel/stacktrace.c:45
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 slab_post_alloc_hook mm/slab.h:442 [inline]
 slab_alloc mm/slab.c:3390 [inline]
 kmem_cache_alloc+0x111/0x3c0 mm/slab.c:3550
 dst_alloc+0xed/0x6d0 net/core/dst.c:107
 __ip6_dst_alloc net/ipv6/route.c:357 [inline]
 ip6_dst_alloc+0x39/0x2d0 net/ipv6/route.c:370
 icmp6_dst_alloc+0x155/0x580 net/ipv6/route.c:1768
 ndisc_send_skb+0xace/0x1390 net/ipv6/ndisc.c:463
 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
 addrconf_rs_timer+0x249/0x550 net/ipv6/addrconf.c:3765
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
 __run_timers kernel/time/timer.c:1644 [inline]
 run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1657
 __do_softirq+0x254/0xa1d kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:preempt_latency_start kernel/sched/core.c:3087 [inline]
RIP: 0010:preempt_count_add+0xd8/0x170 kernel/sched/core.c:3110
RSP: 0018:ffff88804939f6e8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffffffff814cdf50 RCX: 0000000000000000
RDX: 1ffff11013e7d317 RSI: ffffffff83058495 RDI: ffff88809f3e98b8
RBP: ffff88809f3e8680 R08: 0000000000000000 R09: 0000000000020012
R10: ffff88809f3e8f80 R11: ffff88809f3e8680 R12: 0000000000000001
R13: ffff8880a6b874e8 R14: dffffc0000000000 R15: 00000000000026f4
 rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1185 [inline]
 rcu_lockdep_current_cpu_online+0x30/0x140 kernel/rcu/tree.c:1177
 rcu_read_lock_held+0xc3/0x110 kernel/rcu/update.c:330
 radix_tree_deref_slot include/linux/radix-tree.h:238 [inline]
 find_get_entry+0x357/0x630 mm/filemap.c:1357
 pagecache_get_page+0x53/0xab0 mm/filemap.c:1465
 find_get_page_flags include/linux/pagemap.h:282 [inline]
 __find_get_block_slow fs/buffer.c:214 [inline]
 __find_get_block+0x4cc/0xc40 fs/buffer.c:1357
 __getblk_gfp+0x28/0x70 fs/buffer.c:1379
 sb_getblk include/linux/buffer_head.h:333 [inline]
 ext4_getblk+0x139/0x3f0 fs/ext4/inode.c:991
 ext4_bread+0x6c/0x1a0 fs/ext4/inode.c:1034
 __ext4_read_dirblock+0x33/0x810 fs/ext4/namei.c:110
 ext4_get_first_dir_block fs/ext4/namei.c:3335 [inline]
 ext4_rename_dir_prepare+0x10a/0x3e0 fs/ext4/namei.c:3372
 ext4_rename+0x1280/0x1e90 fs/ext4/namei.c:3662
 ext4_rename2+0xc7/0x130 fs/ext4/namei.c:3930
 vfs_rename+0x560/0x1820 fs/namei.c:4496
 SYSC_renameat2 fs/namei.c:4644 [inline]
 SyS_renameat2+0x95b/0xad0 fs/namei.c:4533
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45d239
RSP: 002b:00007f4e64971c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000000000025f80 RCX: 000000000045d239
RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000200001c0
RBP: 000000000118cf78 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffe5690275f R14: 00007f4e649729c0 R15: 000000000118cf4c