------------[ cut here ]------------
kernel BUG at security/keys/keyring.c:1214!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 9062 Comm: syz-executor4 Not tainted 5.0.0-rc1-next-20190111 #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__key_link_begin+0x251/0x300 security/keys/keyring.c:1214
Code: ff 31 ff 41 89 c4 89 c6 e8 1c 7c 3d fe 45 85 e4 0f 89 3a ff ff ff e8 8e 7a 3d fe 4c 89 ef e8 86 d3 4d 00 eb 0f e8 7f 7a 3d fe <0f> 0b e8 78 7a 3d fe 45 89 ec e8 70 7a 3d fe 48 89 da 48 b8 00 00
RSP: 0018:ffff888052defb90 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888052defc98 RCX: ffffc9000de53000
RDX: 0000000000000495 RSI: ffffffff8344b221 RDI: 0000000000000007
RBP: ffff888052defbb8 R08: ffff8880533d4300 R09: fffffbfff1391f65
R10: fffffbfff1391f64 R11: ffffffff89c8fb23 R12: ffff88808904cc80
R13: 0000000000000000 R14: ffff888052defc78 R15: ffff888052defd68
FS:  00007fc456a1d700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000073c000 CR3: 0000000088c4d000 CR4: 00000000001426e0
DR0: 000000000000b8c4 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 construct_alloc_key security/keys/request_key.c:389 [inline]
 construct_key_and_link security/keys/request_key.c:480 [inline]
 request_key_and_link+0x753/0x1890 security/keys/request_key.c:593
 __do_sys_request_key security/keys/keyctl.c:212 [inline]
 __se_sys_request_key security/keys/keyctl.c:157 [inline]
 __x64_sys_request_key+0x284/0x430 security/keys/keyctl.c:157
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc456a1cc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000f9
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020891e58 R11: 0000000000000246 R12: 00007fc456a1d6d4
R13: 00000000004c4a9f R14: 00000000004d81e8 R15: 00000000ffffffff
Modules linked in:
---[ end trace 4c21f231c81dd8f0 ]---
RIP: 0010:__key_link_begin+0x251/0x300 security/keys/keyring.c:1214
Code: ff 31 ff 41 89 c4 89 c6 e8 1c 7c 3d fe 45 85 e4 0f 89 3a ff ff ff e8 8e 7a 3d fe 4c 89 ef e8 86 d3 4d 00 eb 0f e8 7f 7a 3d fe <0f> 0b e8 78 7a 3d fe 45 89 ec e8 70 7a 3d fe 48 89 da 48 b8 00 00
RSP: 0018:ffff888052defb90 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888052defc98 RCX: ffffc9000de53000
RDX: 0000000000000495 RSI: ffffffff8344b221 RDI: 0000000000000007
RBP: ffff888052defbb8 R08: ffff8880533d4300 R09: fffffbfff1391f65
R10: fffffbfff1391f64 R11: ffffffff89c8fb23 R12: ffff88808904cc80
R13: 0000000000000000 R14: ffff888052defc78 R15: ffff888052defd68
FS:  00007fc456a1d700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004dae70 CR3: 0000000088c4d000 CR4: 00000000001406e0
DR0: 000000000000b8c4 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400