[ 38.667100] audit: type=1800 audit(1546354036.533:25): pid=7789 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 38.698072] audit: type=1800 audit(1546354036.533:26): pid=7789 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.739095] audit: type=1800 audit(1546354036.533:27): pid=7789 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 68.020300] kasan: CONFIG_KASAN_INLINE enabled [ 68.025102] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 68.032595] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 68.038891] CPU: 1 PID: 9293 Comm: syz-executor366 Not tainted 4.20.0+ #3 [ 68.045801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.055147] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 68.060585] 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 [ 68.079471] RSP: 0018:ffff88808c2afbd0 EFLAGS: 00010246 [ 68.085210] RAX: 1a77295c281fe700 RBX: ffff88808c2afd90 RCX: ffffffff834376dd [ 68.092480] RDX: 0000000000000000 RSI: ffffffff834376eb RDI: 0000000000000001 [ 68.099776] RBP: ffff88808c2afd20 R08: ffff8880a86fa4c0 R09: ffffed1014f62a41 [ 68.107034] R10: ffffed1014f62a40 R11: 0000000000000005 R12: 0000000000000000 [ 68.114388] R13: dffffc0000000000 R14: d3b94ae140ff3800 R15: 0000000000000000 [ 68.121682] FS: 00000000022ac880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.129908] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.135887] CR2: 0000000020000200 CR3: 000000008c22d000 CR4: 00000000001406e0 [ 68.143142] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.150390] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.157636] Call Trace: [ 68.160230] ? __keyctl_dh_compute.cold+0x63/0x63 [ 68.165159] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 68.170598] ? lock_downgrade+0x910/0x910 [ 68.174749] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 68.179497] keyctl_pkey_query+0xb8/0x2a0 [ 68.183630] ? keyctl_pkey_params_get_2+0x570/0x570 [ 68.188874] ? do_syscall_64+0x8c/0x800 [ 68.192846] ? do_syscall_64+0x8c/0x800 [ 68.196804] ? __do_page_fault+0x3f1/0xd60 [ 68.201053] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.206400] ? trace_hardirqs_off_caller+0x300/0x300 [ 68.211499] __x64_sys_keyctl+0x144/0x420 [ 68.215630] do_syscall_64+0x1a3/0x800 [ 68.219497] ? syscall_return_slowpath+0x5f0/0x5f0 [ 68.224407] ? prepare_exit_to_usermode+0x232/0x3b0 [ 68.229404] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.234230] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.239402] RIP: 0033:0x440cf9 [ 68.242661] Code: e8 cc ab 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 68.261643] RSP: 002b:00007ffcd03fbee8 EFLAGS: 00000207 ORIG_RAX: 00000000000000fa [ 68.269336] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440cf9 [ 68.276587] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [ 68.283936] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000004002c8 [ 68.291191] R10: 0000000020000200 R11: 0000000000000207 R12: 000000000001099d [ 68.298448] R13: 0000000000401cd0 R14: 0000000000000000 R15: 0000000000000000 [ 68.305901] Modules linked in: [ 68.309191] ---[ end trace d2698d842f0c157f ]--- [ 68.313978] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 68.319474] 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 [ 68.338512] RSP: 0018:ffff88808c2afbd0 EFLAGS: 00010246 [ 68.343863] RAX: 1a77295c281fe700 RBX: ffff88808c2afd90 RCX: ffffffff834376dd [ 68.351162] RDX: 0000000000000000 RSI: ffffffff834376eb RDI: 0000000000000001 [ 68.358563] RBP: ffff88808c2afd20 R08: ffff8880a86fa4c0 R09: ffffed1014f62a41 [ 68.365836] R10: ffffed1014f62a40 R11: 0000000000000005 R12: 0000000000000000 [ 68.373130] R13: dffffc0000000000 R14: d3b94ae140ff3800 R15: 0000000000000000 [ 68.380422] FS: 00000000022ac880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.388671] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.394548] CR2: 0000000020000200 CR3: 000000008c22d000 CR4: 00000000001406e0 [ 68.401849] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.409144] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.416435] Kernel panic - not syncing: Fatal exception [ 68.422654] Kernel Offset: disabled [ 68.426278] Rebooting in 86400 seconds..