------------[ cut here ]------------
kernel BUG at lib/assoc_array.c:652!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10445 Comm: kworker/0:9 Not tainted 5.14.0-rc2-next-20210723-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell_work
RIP: 0010:assoc_array_insert_into_terminal_node lib/assoc_array.c:652 [inline]
RIP: 0010:assoc_array_insert+0x1e53/0x2e70 lib/assoc_array.c:1001
Code: 0f 84 c4 fe ff ff e8 bc e0 e2 fd e9 ba fe ff ff e8 b2 5b 9d fd 0f 0b e8 ab 5b 9d fd 0f 0b e8 a4 5b 9d fd 0f 0b e8 9d 5b 9d fd <0f> 0b 48 8b 04 24 4c 89 7c 24 50 48 b9 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc900175177b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 0000000000000000
RDX: ffff888086be8000 RSI: ffffffff83d86603 RDI: ffff888037124958
RBP: ffff888012ddf490 R08: 0000000000000010 R09: 0000000000000001
R10: ffffffff83d85e95 R11: 0000000000000000 R12: ffff888037124990
R13: 000000000000000f R14: ffff8880218fd101 R15: ffff88802a91b800
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000249d708 CR3: 00000000769c3000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __key_link_begin+0xec/0x250 security/keys/keyring.c:1314
 construct_alloc_key security/keys/request_key.c:404 [inline]
 construct_key_and_link security/keys/request_key.c:499 [inline]
 request_key_and_link+0x798/0x1260 security/keys/request_key.c:637
 request_key_tag+0x4e/0xb0 security/keys/request_key.c:701
 dns_query+0x257/0x6d0 net/dns_resolver/dns_query.c:128
 afs_dns_query+0x122/0x390 fs/afs/addr_list.c:249
 afs_update_cell fs/afs/cell.c:402 [inline]
 afs_manage_cell fs/afs/cell.c:784 [inline]
 afs_manage_cell_work+0xa05/0x11f0 fs/afs/cell.c:840
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 9fe945795b935fc3 ]---
RIP: 0010:assoc_array_insert_into_terminal_node lib/assoc_array.c:652 [inline]
RIP: 0010:assoc_array_insert+0x1e53/0x2e70 lib/assoc_array.c:1001
Code: 0f 84 c4 fe ff ff e8 bc e0 e2 fd e9 ba fe ff ff e8 b2 5b 9d fd 0f 0b e8 ab 5b 9d fd 0f 0b e8 a4 5b 9d fd 0f 0b e8 9d 5b 9d fd <0f> 0b 48 8b 04 24 4c 89 7c 24 50 48 b9 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc900175177b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 0000000000000000
RDX: ffff888086be8000 RSI: ffffffff83d86603 RDI: ffff888037124958
RBP: ffff888012ddf490 R08: 0000000000000010 R09: 0000000000000001
R10: ffffffff83d85e95 R11: 0000000000000000 R12: ffff888037124990
R13: 000000000000000f R14: ffff8880218fd101 R15: ffff88802a91b800
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000052c570 CR3: 000000002fad4000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400