[ 34.786414] audit: type=1800 audit(1546312637.017:28): pid=7426 uid=0 auid=4294967295 ses=4294967295 subj=_ 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. [ 35.216530] audit: type=1800 audit(1546312637.537:29): pid=7426 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 35.235275] audit: type=1800 audit(1546312637.537:30): pid=7426 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: rsyslog ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.39' (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 syzkaller login: [ 56.657045] kasan: CONFIG_KASAN_INLINE enabled [ 56.669077] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 56.687978] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 56.694339] CPU: 1 PID: 7690 Comm: syz-executor078 Not tainted 4.20.0+ #2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.701261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.710642] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 56.716095] 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 [ 56.734998] RSP: 0018:ffff8880a4867bd0 EFLAGS: 00010246 [ 56.740362] RAX: 0000000000000000 RBX: ffff8880a4867d90 RCX: ffffffff83434b9d [ 56.748171] RDX: 0000000000000000 RSI: ffffffff83434bab RDI: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.755452] RBP: ffff8880a4867d20 R08: ffff8880a8d7e580 R09: ffffed1013eef479 [ 56.762725] R10: ffffed1013eef478 R11: 0000000000000005 R12: 0000000000000000 [ 56.770008] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.777282] FS: 0000000001531880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 56.785505] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.791386] CR2: 00007fff1b821cb4 CR3: 000000009e483000 CR4: 00000000001406e0 [ 56.798679] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 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 executing program executing program executing program [ 56.805952] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.813302] Call Trace: [ 56.815985] ? __keyctl_dh_compute.cold+0x63/0x63 [ 56.820839] ? __schedule+0x89f/0x1e90 [ 56.824747] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.829503] ? lockdep_hardirqs_on+0x415/0x5d0 [ 56.834088] ? retint_kernel+0x2d/0x2d [ 56.837990] ? trace_hardirqs_on_caller+0xc0/0x310 [ 56.842920] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.847685] keyctl_pkey_query+0xb8/0x2a0 [ 56.851836] ? keyctl_pkey_params_get_2+0x570/0x570 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.856874] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.861636] ? retint_kernel+0x2d/0x2d [ 56.865530] __x64_sys_keyctl+0x144/0x420 [ 56.869683] do_syscall_64+0x1a3/0x800 [ 56.873595] ? syscall_return_slowpath+0x5f0/0x5f0 [ 56.878534] ? prepare_exit_to_usermode+0x232/0x3b0 [ 56.883565] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.888441] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.893628] RIP: 0033:0x440e09 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.896822] Code: e8 ac 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.915740] RSP: 002b:00007fff1b821ca8 EFLAGS: 00000207 ORIG_RAX: 00000000000000fa [ 56.923467] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e09 [ 56.930735] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [ 56.938006] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000004002c8 [ 56.945273] R10: 0000000020000300 R11: 0000000000000207 R12: 000000000000dd27 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.952542] R13: 0000000000401d30 R14: 0000000000000000 R15: 0000000000000000 [ 56.959815] Modules linked in: [ 56.965684] ---[ end trace 9972760400c39f61 ]--- [ 56.975741] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 56.985573] 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 executing program executing program executing program executing program executing program executing program executing program [ 57.007008] kasan: CONFIG_KASAN_INLINE enabled [ 57.009459] RSP: 0018:ffff8880a4867bd0 EFLAGS: 00010246 [ 57.014551] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 57.021621] RAX: 0000000000000000 RBX: ffff8880a4867d90 RCX: ffffffff83434b9d [ 57.028964] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 57.037908] CPU: 1 PID: 7878 Comm: syz-executor078 Tainted: G D 4.20.0+ #2 [ 57.040809] RDX: 0000000000000000 RSI: ffffffff83434bab RDI: 0000000000000001 [ 57.046209] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.046229] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 57.046241] 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 [ 57.046247] RSP: 0018:ffff8880856ffbd0 EFLAGS: 00010206 [ 57.053603] RBP: ffff8880a4867d20 R08: ffff8880a8d7e580 R09: ffffed1013eef479 [ 57.062880] RAX: 000000000836b156 RBX: ffff8880856ffd90 RCX: ffffffff83434b9d [ 57.062888] RDX: 0000000000000003 RSI: ffffffff83434bab RDI: 0000000000000001 [ 57.062897] RBP: ffff8880856ffd20 R08: ffff8880a9752000 R09: ffffed1013196481 [ 57.062904] R10: ffffed1013196480 R11: 0000000000000005 R12: 0000000000000000 [ 57.062911] R13: dffffc0000000000 R14: 0000000041b58ab3 R15: 0000000000000000 [ 57.062922] FS: 0000000001531880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 57.068392] R10: ffffed1013eef478 R11: 0000000000000005 R12: 0000000000000000 [ 57.087230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.087237] CR2: 0000000000414a80 CR3: 0000000092a47000 CR4: 00000000001406e0 [ 57.087247] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.087253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.087256] Call Trace: [ 57.087275] ? __keyctl_dh_compute.cold+0x63/0x63 [ 57.087286] ? __schedule+0x89f/0x1e90 [ 57.087299] ? pci_mmcfg_check_reserved+0x170/0x170 [ 57.087309] ? retint_kernel+0x2d/0x2d [ 57.087319] ? trace_hardirqs_on_caller+0xc0/0x310 [ 57.087330] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 57.087342] keyctl_pkey_query+0xb8/0x2a0 [ 57.087353] ? keyctl_pkey_params_get_2+0x570/0x570 [ 57.087367] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 57.087380] ? retint_kernel+0x2d/0x2d [ 57.087394] __x64_sys_keyctl+0x144/0x420 [ 57.092794] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.100010] do_syscall_64+0x1a3/0x800 [ 57.100023] ? syscall_return_slowpath+0x5f0/0x5f0 [ 57.100038] ? prepare_exit_to_usermode+0x232/0x3b0 [ 57.107347] FS: 0000000001531880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 57.114544] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.114561] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.114572] RIP: 0033:0x440e09 [ 57.121889] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.129096] Code: e8 ac 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.129103] RSP: 002b:00007fff1b821ca8 EFLAGS: 00000207 ORIG_RAX: 00000000000000fa [ 57.129114] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e09 [ 57.129123] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [ 57.136440] CR2: 0000000000414a80 CR3: 000000009e483000 CR4: 00000000001406f0 [ 57.144582] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000004002c8 [ 57.144590] R10: 0000000020000300 R11: 0000000000000207 R12: 000000000000de87 [ 57.144597] R13: 0000000000401d30 R14: 0000000000000000 R15: 0000000000000000 [ 57.144609] Modules linked in: [ 57.151919] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.169418] ---[ end trace 9972760400c39f62 ]--- [ 57.175385] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.180842] RIP: 0010:keyctl_pkey_params_get+0x284/0x550 [ 57.185200] Kernel panic - not syncing: Fatal exception [ 57.192968] 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 [ 57.197547] Kernel Offset: disabled [ 57.411321] Rebooting in 86400 seconds..