------------[ cut here ]------------
kernel BUG at security/keys/keyring.c:1214!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6033 Comm: syz-executor565 Not tainted 4.19.0-rc6-next-20181005+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__key_link_begin+0x23a/0x300 security/keys/keyring.c:1214
Code: fe 48 c7 c7 00 ea 67 89 e8 83 62 1f fe eb ac e8 4c 47 3e fe 48 c7 c7 00 ea 67 89 e8 a0 f2 77 04 e9 e3 fe ff ff e8 36 47 3e fe <0f> 0b e8 2f 47 3e fe 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffff8801c37f7b10 EFLAGS: 00010293
RAX: ffff8801d58d6600 RBX: ffff8801d4431040 RCX: ffffffff833f34af
RDX: 0000000000000000 RSI: ffffffff833f369a RDI: 0000000000000007
RBP: ffff8801c37f7b40 R08: ffff8801d58d6600 R09: fffffbfff12cfc20
R10: fffffbfff12cfc20 R11: ffffffff8967e103 R12: ffff8801c37f7c48
R13: 0000000000000000 R14: ffff8801d44311c0 R15: ffff8801d4431040
FS:  0000000000a43880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020cab000 CR3: 00000001d5931000 CR4: 00000000001406f0
DR0: 0000000000000000 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+0x737/0x17a0 security/keys/request_key.c:593
 __do_sys_request_key security/keys/keyctl.c:213 [inline]
 __se_sys_request_key security/keys/keyctl.c:158 [inline]
 __x64_sys_request_key+0x305/0x400 security/keys/keyctl.c:158
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440169
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff0466c778 EFLAGS: 00000217 ORIG_RAX: 00000000000000f9
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169
RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000012805ba6 R11: 0000000000000217 R12: 00000000004019f0
R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 8c547e7bade7389a ]---
RIP: 0010:__key_link_begin+0x23a/0x300 security/keys/keyring.c:1214
Code: fe 48 c7 c7 00 ea 67 89 e8 83 62 1f fe eb ac e8 4c 47 3e fe 48 c7 c7 00 ea 67 89 e8 a0 f2 77 04 e9 e3 fe ff ff e8 36 47 3e fe <0f> 0b e8 2f 47 3e fe 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffff8801c37f7b10 EFLAGS: 00010293
RAX: ffff8801d58d6600 RBX: ffff8801d4431040 RCX: ffffffff833f34af
RDX: 0000000000000000 RSI: ffffffff833f369a RDI: 0000000000000007
RBP: ffff8801c37f7b40 R08: ffff8801d58d6600 R09: fffffbfff12cfc20
R10: fffffbfff12cfc20 R11: ffffffff8967e103 R12: ffff8801c37f7c48
R13: 0000000000000000 R14: ffff8801d44311c0 R15: ffff8801d4431040
FS:  0000000000a43880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020cab000 CR3: 00000001d5931000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400