alg: No test for cbcmac(cipher_null) (cbcmac(cipher_null-generic))
------------[ cut here ]------------
kernel BUG at mm/slub.c:3934!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 455 Comm: kworker/u4:5 Not tainted 4.18.0-rc5+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:kfree+0x1ad4/0x2ac0 mm/slub.c:3934
Code: ff 8b bd 44 ff ff ff e8 8a a1 02 00 45 84 f6 0f 85 ed ec ff ff e9 01 fb ff ff 8b 3a e8 75 a1 02 00 48 85 db 0f 85 96 ed ff ff <0f> 0b eb fe 44 89 ef e8 60 a1 02 00 48 8b bd 68 ff ff ff e9 52 ed 
RSP: 0018:ffff8801d048f710 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8ba11000 RSI: 0000000000000001 RDI: ffffea0006000008
RBP: ffff8801d048f860 R08: 0000000000000000 R09: 000077ff80000000
R10: 0000000080170000 R11: ffffffff896d8d40 R12: ffffea0006000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88021fffad9f
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000013d292000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dccp_feat_val_destructor net/dccp/feat.c:388 [inline]
 dccp_feat_entry_destructor net/dccp/feat.c:417 [inline]
 dccp_feat_list_purge+0x210/0x3f0 net/dccp/feat.c:549
 dccp_destroy_sock+0x668/0x6b0 net/dccp/proto.c:239
 inet_csk_destroy_sock+0x29f/0x5f0 net/ipv4/inet_connection_sock.c:826
 dccp_close+0xca8/0x1df0 net/dccp/proto.c:1087
 inet_release+0x256/0x2d0 net/ipv4/af_inet.c:427
 __sock_release net/socket.c:599 [inline]
 sock_release+0xe6/0x2e0 net/socket.c:618
 inet_ctl_sock_destroy include/net/inet_common.h:54 [inline]
 dccp_v4_exit_net+0x8b/0xc0 net/dccp/ipv4.c:1023
 ops_exit_list net/core/net_namespace.c:152 [inline]
 cleanup_net+0xaf4/0x1710 net/core/net_namespace.c:523
 process_one_work+0x1655/0x2000 kernel/workqueue.c:2153
 worker_thread+0x1136/0x2490 kernel/workqueue.c:2296
 kthread+0x473/0x4b0 kernel/kthread.c:247
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 805089a1b472a929 ]---
RIP: 0010:kfree+0x1ad4/0x2ac0 mm/slub.c:3934
Code: ff 8b bd 44 ff ff ff e8 8a a1 02 00 45 84 f6 0f 85 ed ec ff ff e9 01 fb ff ff 8b 3a e8 75 a1 02 00 48 85 db 0f 85 96 ed ff ff <0f> 0b eb fe 44 89 ef e8 60 a1 02 00 48 8b bd 68 ff ff ff e9 52 ed 
RSP: 0018:ffff8801d048f710 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8ba11000 RSI: 0000000000000001 RDI: ffffea0006000008
RBP: ffff8801d048f860 R08: 0000000000000000 R09: 000077ff80000000
R10: 0000000080170000 R11: ffffffff896d8d40 R12: ffffea0006000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88021fffad9f
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000000b030000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400