audit: type=1800 audit(1546340118.457:30): pid=7232 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 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: 1 PID: 7386 Comm: syz-executor491 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:ffff88808b98fbd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88808b98fd90 RCX: ffffffff83452b1d RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001 RBP: ffff88808b98fd20 R08: ffff888088dc8580 R09: ffffed1013f7ab09 R10: ffffed1013f7ab08 R11: 0000000000000005 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f551c518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 000000008f039000 CR4: 00000000001406e0 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:00007f551c517db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445589 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000300 R11: 0000000000000246 R12: 00000000006dac2c R13: 00007fff034e9fef R14: 00007f551c5189c0 R15: 00000000006dad2c Modules linked in: ---[ end trace 2957fe98941013e3 ]--- 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:ffff88808b98fbd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88808b98fd90 RCX: ffffffff83452b1d RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001 RBP: ffff88808b98fd20 R08: ffff888088dc8580 R09: ffffed1013f7ab09 R10: ffffed1013f7ab08 R11: 0000000000000005 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f551c518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 000000008f039000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400