[ 31.225250] audit: type=1800 audit(1546340117.747:27): pid=7232 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 31.261771] audit: type=1800 audit(1546340117.747:28): pid=7232 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 31.876641] audit: type=1800 audit(1546340118.457:29): pid=7232 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 31.900075] 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.862693] kasan: CONFIG_KASAN_INLINE enabled [ 41.867416] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.874846] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.881062] CPU: 1 PID: 7386 Comm: syz-executor491 Not tainted 4.20.0-rc7-next-20181224 #1 [ 41.889433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.898767] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 41.904189] 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 [ 41.923065] RSP: 0018:ffff88808b98fbd0 EFLAGS: 00010246 [ 41.928438] RAX: 0000000000000000 RBX: ffff88808b98fd90 RCX: ffffffff83452b1d [ 41.935691] RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001 [ 41.942939] RBP: ffff88808b98fd20 R08: ffff888088dc8580 R09: ffffed1013f7ab09 [ 41.950183] R10: ffffed1013f7ab08 R11: 0000000000000005 R12: 0000000000000000 [ 41.957437] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 41.964688] FS: 00007f551c518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 41.972888] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.978740] CR2: 0000000020000300 CR3: 000000008f039000 CR4: 00000000001406e0 [ 41.985987] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.993230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.000467] Call Trace: [ 42.003049] ? __keyctl_dh_compute.cold+0x63/0x63 [ 42.007868] ? lockdep_hardirqs_on+0x415/0x5d0 [ 42.012459] ? trace_hardirqs_on+0xbd/0x310 [ 42.016752] ? trace_hardirqs_off_caller+0x300/0x300 [ 42.021826] ? __kasan_slab_free+0x119/0x150 [ 42.026205] keyctl_pkey_query+0xb8/0x2a0 [ 42.030325] ? keyctl_pkey_params_get_2+0x570/0x570 [ 42.035328] ? do_syscall_64+0x8c/0x800 [ 42.039279] ? do_syscall_64+0x8c/0x800 [ 42.043233] ? do_futex+0x2910/0x2910 [ 42.047006] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.052338] ? trace_hardirqs_off_caller+0x300/0x300 [ 42.057411] __x64_sys_keyctl+0x144/0x420 [ 42.061532] do_syscall_64+0x1a3/0x800 [ 42.065395] ? syscall_return_slowpath+0x5f0/0x5f0 [ 42.070298] ? prepare_exit_to_usermode+0x232/0x3b0 [ 42.075298] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.080114] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.085275] RIP: 0033:0x445589 [ 42.088438] 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 [ 42.107311] RSP: 002b:00007f551c517db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa [ 42.114991] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445589 [ 42.122231] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [ 42.129472] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 42.136714] R10: 0000000020000300 R11: 0000000000000246 R12: 00000000006dac2c [ 42.143955] R13: 00007fff034e9fef R14: 00007f551c5189c0 R15: 00000000006dad2c [ 42.151202] Modules linked in: [ 42.155083] ---[ end trace 2957fe98941013e3 ]--- [ 42.159836] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 42.165300] 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 [ 42.184247] RSP: 0018:ffff88808b98fbd0 EFLAGS: 00010246 [ 42.189589] RAX: 0000000000000000 RBX: ffff88808b98fd90 RCX: ffffffff83452b1d [ 42.196878] RDX: 0000000000000000 RSI: ffffffff83452b2b RDI: 0000000000000001 [ 42.204159] RBP: ffff88808b98fd20 R08: ffff888088dc8580 R09: ffffed1013f7ab09 [ 42.211424] R10: ffffed1013f7ab08 R11: 0000000000000005 R12: 0000000000000000 [ 42.218674] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 42.225947] FS: 00007f551c518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 42.234171] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.240026] CR2: 0000000020000300 CR3: 000000008f039000 CR4: 00000000001406e0 [ 42.247303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.254571] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.261861] Kernel panic - not syncing: Fatal exception [ 42.268235] Kernel Offset: disabled [ 42.271847] Rebooting in 86400 seconds..