sshd (7938) used greatest stack depth: 19848 bytes left
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7953 Comm: syz-executor920 Not tainted 4.20.0-rc7-next-20181224 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline]
RIP: 0010:keyctl_pkey_params_get+0x284/0x550 security/keys/keyctl_pkey.c:96
Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 41 02 00 00 4c 8b b4 24 b0 00 00 00 4c 89 f0 4c 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 2a 02 00 00 41 0f b6 36 31
RSP: 0018:ffff8880a7c27bd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a7c27d90 RCX: ffffffff83452b1d
RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001
RBP: ffff8880a7c27d20 R08: ffff88809073c080 R09: ffffed10152715c9
R10: ffffed10152715c8 R11: 0000000000000005 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f65f6548700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000200 CR3: 000000008f669000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 keyctl_pkey_query+0xb8/0x2a0 security/keys/keyctl_pkey.c:173
 __do_sys_keyctl security/keys/keyctl.c:1752 [inline]
 __se_sys_keyctl security/keys/keyctl.c:1636 [inline]
 __x64_sys_keyctl+0x144/0x420 security/keys/keyctl.c:1636
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x445589
Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f65f6547db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445589
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000200 R11: 0000000000000246 R12: 00000000006dac2c
R13: 00007ffc0ff3edbf R14: 00007f65f65489c0 R15: 00000000006dad2c
Modules linked in:
---[ end trace 951235213fb1b261 ]---
RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline]
RIP: 0010:keyctl_pkey_params_get+0x284/0x550 security/keys/keyctl_pkey.c:96
Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 41 02 00 00 4c 8b b4 24 b0 00 00 00 4c 89 f0 4c 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 2a 02 00 00 41 0f b6 36 31
RSP: 0018:ffff8880a7c27bd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a7c27d90 RCX: ffffffff83452b1d
RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001
RBP: ffff8880a7c27d20 R08: ffff88809073c080 R09: ffffed10152715c9
R10: ffffed10152715c8 R11: 0000000000000005 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f65f6548700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000200 CR3: 000000008f669000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400