[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.481304][ T26] audit: type=1800 audit(1570854468.678:25): pid=8871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.519366][ T26] audit: type=1800 audit(1570854468.678:26): pid=8871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.580634][ T26] audit: type=1800 audit(1570854468.688:27): pid=8871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.200' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 81.331588][ T9032] ================================================================== [ 81.340022][ T9032] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 81.341230][ T9034] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 81.347496][ T9032] Read of size 63 at addr 0000000000000000 by task syz-executor389/9032 [ 81.355295][ T9034] #PF: supervisor read access in kernel mode [ 81.363618][ T9032] [ 81.369594][ T9034] #PF: error_code(0x0000) - not-present page [ 81.371907][ T9032] CPU: 1 PID: 9032 Comm: syz-executor389 Not tainted 5.4.0-rc1+ #0 [ 81.377949][ T9034] PGD 842f1067 P4D 842f1067 PUD 9da9e067 PMD 0 [ 81.385904][ T9032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.392123][ T9034] Oops: 0000 [#1] PREEMPT SMP KASAN [ 81.402164][ T9032] Call Trace: [ 81.407343][ T9034] CPU: 0 PID: 9034 Comm: syz-executor389 Not tainted 5.4.0-rc1+ #0 [ 81.410613][ T9032] dump_stack+0x172/0x1f0 [ 81.418479][ T9034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.422993][ T9032] ? llcp_sock_getname+0x358/0x460 [ 81.433098][ T9034] RIP: 0010:memcpy_erms+0x6/0x10 [ 81.438181][ T9032] ? llcp_sock_getname+0x358/0x460 [ 81.443208][ T9034] Code: 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe [ 81.448306][ T9032] __kasan_report.cold+0x5/0x41 [ 81.467896][ T9034] RSP: 0018:ffff8880944c7ba0 EFLAGS: 00010246 [ 81.472771][ T9032] ? llcp_sock_getname+0x358/0x460 [ 81.478809][ T9034] RAX: ffff8880944c7d2a RBX: ffff8880944c7d18 RCX: 000000000000003f [ 81.483917][ T9032] kasan_report+0x12/0x20 [ 81.491858][ T9034] RDX: 000000000000003f RSI: 0000000000000000 RDI: ffff8880944c7d2a [ 81.496167][ T9032] check_memory_region+0x134/0x1a0 [ 81.504144][ T9034] RBP: ffff8880944c7bc0 R08: 1ffff11012898fa5 R09: ffffed1012898fae [ 81.509254][ T9032] memcpy+0x24/0x50 [ 81.517193][ T9034] R10: ffffed1012898fad R11: ffff8880944c7d68 R12: 000000000000003f [ 81.520992][ T9032] llcp_sock_getname+0x358/0x460 [ 81.528930][ T9034] R13: ffff8880944c7d2a R14: 0000000000000000 R15: ffff888085042a80 [ 81.533850][ T9032] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 81.541800][ T9034] FS: 000000000176d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.541816][ T9034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.547736][ T9032] sock_getsockopt+0x14a7/0x205e [ 81.556642][ T9034] CR2: 0000000000000000 CR3: 00000000989ec000 CR4: 00000000001406f0 [ 81.563211][ T9032] ? release_sock+0x156/0x1c0 [ 81.568116][ T9034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.576082][ T9032] ? sk_get_meminfo+0x4d0/0x4d0 [ 81.580725][ T9034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.588681][ T9032] ? _raw_spin_unlock_bh+0x31/0x40 [ 81.593519][ T9034] Call Trace: [ 81.601504][ T9032] ? ___might_sleep+0x163/0x2c0 [ 81.606581][ T9034] ? memcpy+0x46/0x50 [ 81.609845][ T9032] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.614671][ T9034] llcp_sock_getname+0x358/0x460 [ 81.618624][ T9032] ? aa_label_sk_perm+0x91/0xf0 [ 81.624840][ T9034] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 81.629772][ T9032] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 81.634597][ T9034] sock_getsockopt+0x14a7/0x205e [ 81.640461][ T9032] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 81.646075][ T9034] ? release_sock+0x156/0x1c0 [ 81.651001][ T9032] ? apparmor_socket_getsockopt+0x22/0x30 [ 81.656521][ T9034] ? sk_get_meminfo+0x4d0/0x4d0 [ 81.661200][ T9032] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.666935][ T9034] ? _raw_spin_unlock_bh+0x31/0x40 [ 81.671864][ T9032] ? security_socket_getsockopt+0x8d/0xc0 [ 81.678093][ T9034] ? ___might_sleep+0x163/0x2c0 [ 81.683178][ T9032] __sys_getsockopt+0x2c9/0x310 [ 81.688872][ T9034] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.693693][ T9032] ? kernel_accept+0x310/0x310 [ 81.698523][ T9034] ? aa_label_sk_perm+0x91/0xf0 [ 81.704736][ T9032] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 81.709490][ T9034] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 81.714324][ T9032] ? do_syscall_64+0x26/0x760 [ 81.719774][ T9034] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 81.725381][ T9032] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.730035][ T9034] ? apparmor_socket_getsockopt+0x22/0x30 [ 81.735573][ T9032] ? do_syscall_64+0x26/0x760 [ 81.741625][ T9034] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.747320][ T9032] __x64_sys_getsockopt+0xbe/0x150 [ 81.751981][ T9034] ? security_socket_getsockopt+0x8d/0xc0 [ 81.758197][ T9032] do_syscall_64+0xfa/0x760 [ 81.763301][ T9034] __sys_getsockopt+0x2c9/0x310 [ 81.769007][ T9032] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.773507][ T9034] ? kernel_accept+0x310/0x310 [ 81.778326][ T9032] RIP: 0033:0x4412c9 [ 81.784218][ T9034] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 81.788963][ T9032] 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 81.792832][ T9034] ? do_syscall_64+0x26/0x760 [ 81.798259][ T9032] RSP: 002b:00007ffdd5a0b858 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 81.818387][ T9034] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.823039][ T9032] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 81.823051][ T9032] RDX: 000000000000001c RSI: 0000000000000001 RDI: 0000000000000003 [ 81.831453][ T9034] ? do_syscall_64+0x26/0x760 [ 81.837538][ T9032] RBP: 00000000006cb018 R08: 0000000020000140 R09: 00000000004002c8 [ 81.845512][ T9034] __x64_sys_getsockopt+0xbe/0x150 [ 81.853472][ T9032] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402040 [ 81.858315][ T9034] do_syscall_64+0xfa/0x760 executing program executing program executing program [ 81.866790][ T9032] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 81.871897][ T9034] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.879844][ T9032] ================================================================== [ 81.884350][ T9034] RIP: 0033:0x4412c9 [ 81.910371][ T9034] 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 81.930252][ T9034] RSP: 002b:00007ffdd5a0b858 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 81.938757][ T9034] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 81.946817][ T9034] RDX: 000000000000001c RSI: 0000000000000001 RDI: 0000000000000003 [ 81.954782][ T9034] RBP: 00000000006cb018 R08: 0000000020000140 R09: 00000000004002c8 [ 81.962771][ T9034] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402040 [ 81.970745][ T9034] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 81.978716][ T9034] Modules linked in: executing program executing program executing program [ 81.982605][ T9034] CR2: 0000000000000000 [ 81.986762][ T9036] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 81.994164][ T9034] ---[ end trace cc1de3e904249f83 ]--- [ 81.994614][ T9036] #PF: supervisor read access in kernel mode [ 82.000728][ T9034] RIP: 0010:memcpy_erms+0x6/0x10 [ 82.006192][ T9036] #PF: error_code(0x0000) - not-present page [ 82.006203][ T9036] PGD 962f0067 P4D 962f0067 PUD 8a3da067 PMD 0 [ 82.006224][ T9036] Oops: 0000 [#2] PREEMPT SMP KASAN executing program executing program [ 82.006242][ T9036] CPU: 1 PID: 9036 Comm: syz-executor389 Tainted: G B D 5.4.0-rc1+ #0 [ 82.014935][ T9034] Code: 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe [ 82.017131][ T9036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.017154][ T9036] RIP: 0010:memcpy_erms+0x6/0x10 executing program executing program [ 82.017173][ T9036] Code: 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe [ 82.027721][ T9034] RSP: 0018:ffff8880944c7ba0 EFLAGS: 00010246 [ 82.028586][ T9036] RSP: 0018:ffff8880812d7ba0 EFLAGS: 00010246 [ 82.028597][ T9036] RAX: ffff8880812d7d2a RBX: ffff8880812d7d18 RCX: 000000000000003f [ 82.028604][ T9036] RDX: 000000000000003f RSI: 0000000000000000 RDI: ffff8880812d7d2a [ 82.028622][ T9036] RBP: ffff8880812d7bc0 R08: 1ffff1101025afa5 R09: ffffed101025afae executing program executing program executing program [ 82.042173][ T9034] RAX: ffff8880944c7d2a RBX: ffff8880944c7d18 RCX: 000000000000003f [ 82.057491][ T9036] R10: ffffed101025afad R11: ffff8880812d7d68 R12: 000000000000003f [ 82.057498][ T9036] R13: ffff8880812d7d2a R14: 0000000000000000 R15: ffff8880932f8040 [ 82.057507][ T9036] FS: 000000000176d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 82.057515][ T9036] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.057522][ T9036] CR2: 0000000000000000 CR3: 000000008b29f000 CR4: 00000000001406e0 [ 82.057531][ T9036] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.057536][ T9036] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.057542][ T9036] Call Trace: [ 82.057562][ T9036] ? memcpy+0x46/0x50 [ 82.057589][ T9036] llcp_sock_getname+0x358/0x460 [ 82.072248][ T9034] RDX: 000000000000003f RSI: 0000000000000000 RDI: ffff8880944c7d2a [ 82.072616][ T9036] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 82.093006][ T9034] RBP: ffff8880944c7bc0 R08: 1ffff11012898fa5 R09: ffffed1012898fae [ 82.098288][ T9036] sock_getsockopt+0x14a7/0x205e [ 82.098302][ T9036] ? release_sock+0x156/0x1c0 [ 82.098319][ T9036] ? sk_get_meminfo+0x4d0/0x4d0 [ 82.108358][ T9034] R10: ffffed1012898fad R11: ffff8880944c7d68 R12: 000000000000003f [ 82.112364][ T9036] ? _raw_spin_unlock_bh+0x31/0x40 [ 82.112378][ T9036] ? release_sock+0x156/0x1c0 [ 82.112404][ T9036] ? ___might_sleep+0x163/0x2c0 [ 82.124795][ T9034] R13: ffff8880944c7d2a R14: 0000000000000000 R15: ffff888085042a80 [ 82.128436][ T9036] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.128460][ T9036] ? aa_label_sk_perm+0x91/0xf0 [ 82.140587][ T9034] FS: 000000000176d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.144394][ T9036] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 82.144413][ T9036] ? apparmor_socket_getsockopt+0x22/0x30 [ 82.156534][ T9034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.161342][ T9036] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.161358][ T9036] ? security_socket_getsockopt+0x8d/0xc0 [ 82.161382][ T9036] __sys_getsockopt+0x2c9/0x310 [ 82.168545][ T9034] CR2: 00000000004bf7e8 CR3: 00000000989ec000 CR4: 00000000001406f0 [ 82.175958][ T9036] ? kernel_accept+0x310/0x310 [ 82.175976][ T9036] ? switch_fpu_return+0x1fa/0x4f0 [ 82.175992][ T9036] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 82.176011][ T9036] __x64_sys_getsockopt+0xbe/0x150 [ 82.187805][ T9034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.191950][ T9036] do_syscall_64+0xfa/0x760 [ 82.191970][ T9036] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.191987][ T9036] RIP: 0033:0x4412c9 [ 82.195817][ T9034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.199223][ T9036] 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.199231][ T9036] RSP: 002b:00007ffdd5a0b858 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 82.199241][ T9036] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 82.199247][ T9036] RDX: 000000000000001c RSI: 0000000000000001 RDI: 0000000000000003 [ 82.199254][ T9036] RBP: 0000000000013d73 R08: 0000000020000140 R09: 00000000004002c8 [ 82.199268][ T9036] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402040 [ 82.204253][ T9034] Kernel panic - not syncing: Fatal exception [ 82.212147][ T9036] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 82.212161][ T9036] Modules linked in: [ 82.463348][ T9036] CR2: 0000000000000000 [ 82.469099][ T9034] Kernel Offset: disabled [ 82.473434][ T9034] Rebooting in 86400 seconds..