[ 37.782820] audit: type=1800 audit(1546353939.389:25): pid=7747 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.819587] audit: type=1800 audit(1546353939.389:26): pid=7747 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.856289] audit: type=1800 audit(1546353939.399:27): pid=7747 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.882118] audit: type=1800 audit(1546353939.399:28): pid=7747 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.98' (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 syzkaller login: [ 58.128098] kasan: CONFIG_KASAN_INLINE enabled [ 58.134680] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 58.152979] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 58.159348] CPU: 0 PID: 8224 Comm: syz-executor497 Not tainted 4.20.0+ #3 [ 58.166298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.175665] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 58.181154] 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 [ 58.200056] RSP: 0018:ffff888091defbd0 EFLAGS: 00010246 [ 58.205423] RAX: 060ba8b6fce8ec40 RBX: ffff888091defd90 RCX: ffffffff834376dd [ 58.212692] RDX: 0000000000000000 RSI: ffffffff834376eb RDI: 0000000000000001 [ 58.219961] RBP: ffff888091defd20 R08: ffff88808fffc200 R09: ffffed1014143b29 [ 58.227261] R10: ffffed1014143b28 R11: 0000000000000005 R12: 0000000000000000 [ 58.234533] R13: dffffc0000000000 R14: 305d45b7e7476200 R15: 0000000000000000 [ 58.241810] FS: 00007f27ecb83700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 58.250064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.255945] CR2: 00000000004cc670 CR3: 00000000850fe000 CR4: 00000000001406f0 [ 58.263245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.270530] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.277798] Call Trace: [ 58.280393] ? __keyctl_dh_compute.cold+0x63/0x63 [ 58.285242] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 58.290752] ? lock_downgrade+0x910/0x910 [ 58.294911] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.299680] keyctl_pkey_query+0xb8/0x2a0 [ 58.303856] ? keyctl_pkey_params_get_2+0x570/0x570 [ 58.308889] ? do_syscall_64+0x8c/0x800 [ 58.312864] ? do_syscall_64+0x8c/0x800 [ 58.316854] ? __do_page_fault+0x3f1/0xd60 [ 58.321129] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.326510] ? trace_hardirqs_off_caller+0x300/0x300 [ 58.331615] __x64_sys_keyctl+0x144/0x420 [ 58.335775] do_syscall_64+0x1a3/0x800 [ 58.339688] ? syscall_return_slowpath+0x5f0/0x5f0 [ 58.344620] ? prepare_exit_to_usermode+0x232/0x3b0 [ 58.349639] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.354500] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.359704] RIP: 0033:0x446299 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 58.362964] Code: e8 0c e8 ff ff 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 7b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 58.381859] RSP: 002b:00007f27ecb82db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa [ 58.389572] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000446299 [ 58.396841] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [ 58.404113] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 58.411379] R10: 0000000020000200 R11: 0000000000000246 R12: 00000000006dac2c [ 58.418657] R13: 00007fffd381c2ff R14: 00007f27ecb839c0 R15: 0000000000000000 [ 58.425916] Modules linked in: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 58.450107] ---[ end trace d83cf66857d0f128 ]--- [ 58.460760] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 58.467990] 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 [ 58.492270] RSP: 0018:ffff888091defbd0 EFLAGS: 00010246 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 58.499575] RAX: 060ba8b6fce8ec40 RBX: ffff888091defd90 RCX: ffffffff834376dd [ 58.510101] RDX: 0000000000000000 RSI: ffffffff834376eb RDI: 0000000000000001 [ 58.522963] RBP: ffff888091defd20 R08: ffff88808fffc200 R09: ffffed1014143b29 [ 58.533926] R10: ffffed1014143b28 R11: 0000000000000005 R12: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 58.543693] R13: dffffc0000000000 R14: 305d45b7e7476200 R15: 0000000000000000 [ 58.557462] FS: 00007f27ecb83700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 58.570162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.579238] CR2: 00007fffd381c380 CR3: 00000000850fe000 CR4: 00000000001406e0 [ 58.593632] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program [ 58.604801] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.616853] Kernel panic - not syncing: Fatal exception [ 58.623178] Kernel Offset: disabled [ 58.626803] Rebooting in 86400 seconds..