BUG: kernel NULL pointer dereference, address: 000000000000006f
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 11f60f067 P4D 11f60f067 PUD 11f3ab067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.10.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:__lock_acquire+0x5d0/0x1ee0 kernel/locking/lockdep.c:4703
Code: 2f 89 85 10 09 00 00 0f 87 04 01 00 00 3b 05 3b f8 28 05 41 bf 01 00 00 00 0f 86 35 01 00 00 89 05 29 f8 28 05 e9 2a 01 00 00 <48> 81 3f 20 44 2c 86 41 ba 00 00 00 00 45 0f 45 d0 83 fb 01 0f 87
RSP: 0018:ffffc90000ce7cd0 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000006f
RBP: ffff888100c3cbc0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000006f
FS:  0000000000000000(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000006f CR3: 000000011f61c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0xd0/0x3d0 kernel/locking/lockdep.c:5437
 __raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
 _raw_write_lock+0x2a/0x40 kernel/locking/spinlock.c:295
 neigh_periodic_work+0xbe/0x2f0 net/core/neighbour.c:923
 process_one_work+0x273/0x600 kernel/workqueue.c:2272
 worker_thread+0x38/0x380 kernel/workqueue.c:2418
 kthread+0x144/0x170 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
CR2: 000000000000006f
---[ end trace 4bb107b254e3e3f2 ]---
RIP: 0010:__lock_acquire+0x5d0/0x1ee0 kernel/locking/lockdep.c:4703
Code: 2f 89 85 10 09 00 00 0f 87 04 01 00 00 3b 05 3b f8 28 05 41 bf 01 00 00 00 0f 86 35 01 00 00 89 05 29 f8 28 05 e9 2a 01 00 00 <48> 81 3f 20 44 2c 86 41 ba 00 00 00 00 45 0f 45 d0 83 fb 01 0f 87
RSP: 0018:ffffc90000ce7cd0 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000006f
RBP: ffff888100c3cbc0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000006f
FS:  0000000000000000(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000006f CR3: 000000011f61c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400