[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 64.208951][ T26] audit: type=1800 audit(1573306119.476:25): pid=8524 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 64.228900][ T26] audit: type=1800 audit(1573306119.486:26): pid=8524 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 64.275085][ T26] audit: type=1800 audit(1573306119.486:27): pid=8524 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 '10.128.10.32' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 74.826185][ T8684] ================================================================== [ 74.827817][ T8688] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 74.834398][ T8684] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 74.842520][ T8688] #PF: supervisor read access in kernel mode [ 74.849961][ T8684] Read of size 1 at addr 0000000000000000 by task syz-executor193/8684 [ 74.855908][ T8688] #PF: error_code(0x0000) - not-present page [ 74.864122][ T8684] [ 74.870073][ T8688] PGD 9ff06067 P4D 9ff06067 PUD a30d2067 PMD 0 [ 74.872384][ T8684] CPU: 0 PID: 8684 Comm: syz-executor193 Not tainted 5.4.0-rc6-next-20191108 #0 [ 74.878591][ T8688] Oops: 0000 [#1] PREEMPT SMP KASAN [ 74.887578][ T8684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.892749][ T8688] CPU: 1 PID: 8688 Comm: syz-executor193 Not tainted 5.4.0-rc6-next-20191108 #0 [ 74.902771][ T8684] Call Trace: [ 74.911761][ T8688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.915028][ T8684] dump_stack+0x197/0x210 [ 74.925183][ T8688] RIP: 0010:memcpy_erms+0x6/0x10 [ 74.929501][ T8684] ? llcp_sock_getname+0x358/0x460 [ 74.934409][ T8688] 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 [ 74.939499][ T8684] ? llcp_sock_getname+0x358/0x460 [ 74.959596][ T8688] RSP: 0018:ffff888099ae7d50 EFLAGS: 00010246 [ 74.964944][ T8684] __kasan_report.cold+0x5/0x41 [ 74.970978][ T8688] RAX: ffff888099ae7e12 RBX: ffff888099ae7e00 RCX: 0000000000000001 [ 74.976079][ T8684] ? llcp_sock_getname+0x358/0x460 [ 74.984018][ T8688] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff888099ae7e12 [ 74.989103][ T8684] kasan_report+0x12/0x20 [ 74.997045][ T8688] RBP: ffff888099ae7d70 R08: 1ffff1101335cfc2 R09: ffffed101335cfc3 [ 75.001349][ T8684] check_memory_region+0x134/0x1a0 [ 75.009290][ T8688] R10: ffffed101335cfc2 R11: ffff888099ae7e12 R12: 0000000000000001 [ 75.014384][ T8684] memcpy+0x24/0x50 [ 75.022331][ T8688] R13: ffff888099ae7e12 R14: 0000000000000000 R15: ffffffff8867b340 [ 75.026115][ T8684] llcp_sock_getname+0x358/0x460 [ 75.034179][ T8688] FS: 000000000177b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 75.039110][ T8684] __sys_getpeername+0x12b/0x290 [ 75.048005][ T8688] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.052921][ T8684] ? __ia32_sys_getsockname+0xb0/0xb0 [ 75.059468][ T8688] CR2: 0000000000000000 CR3: 0000000091fcb000 CR4: 00000000001406e0 [ 75.064835][ T8684] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.072785][ T8688] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.078236][ T8684] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.086190][ T8688] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.091643][ T8684] ? do_syscall_64+0x26/0x760 [ 75.099575][ T8688] Call Trace: [ 75.104238][ T8684] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.107496][ T8688] ? memcpy+0x46/0x50 [ 75.113533][ T8684] ? do_syscall_64+0x26/0x760 [ 75.117487][ T8688] llcp_sock_getname+0x358/0x460 [ 75.122135][ T8684] __x64_sys_getpeername+0x73/0xb0 [ 75.127053][ T8688] __sys_getpeername+0x12b/0x290 [ 75.132145][ T8684] do_syscall_64+0xfa/0x760 [ 75.137058][ T8688] ? __ia32_sys_getsockname+0xb0/0xb0 [ 75.141555][ T8684] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.146901][ T8688] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.152761][ T8684] RIP: 0033:0x4412b9 [ 75.158191][ T8688] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.162055][ T8684] 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 [ 75.167483][ T8688] ? do_syscall_64+0x26/0x760 [ 75.187065][ T8684] RSP: 002b:00007fffe89b0938 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 75.191740][ T8688] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.200119][ T8684] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412b9 [ 75.206161][ T8688] ? do_syscall_64+0x26/0x760 [ 75.214103][ T8684] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 75.218769][ T8688] __x64_sys_getpeername+0x73/0xb0 [ 75.226799][ T8684] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 75.231885][ T8688] do_syscall_64+0xfa/0x760 [ 75.239827][ T8684] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402030 [ 75.244315][ T8688] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.252255][ T8684] R13: 00000000004020c0 R14: 0000000000000000 R15: 0000000000000000 [ 75.258234][ T8688] RIP: 0033:0x4412b9 [ 75.266186][ T8684] ================================================================== [ 75.270064][ T8688] 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 [ 75.297681][ T8688] RSP: 002b:00007fffe89b0938 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 75.306088][ T8688] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412b9 [ 75.314123][ T8688] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 executing program executing program [ 75.322076][ T8688] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 75.330030][ T8688] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402030 [ 75.337982][ T8688] R13: 00000000004020c0 R14: 0000000000000000 R15: 0000000000000000 [ 75.345953][ T8688] Modules linked in: [ 75.349829][ T8688] CR2: 0000000000000000 [ 75.353971][ T8686] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 75.361779][ T8686] #PF: supervisor read access in kernel mode [ 75.367741][ T8686] #PF: error_code(0x0000) - not-present page [ 75.373781][ T8686] PGD 91c30067 P4D 91c30067 PUD 95830067 PMD 0 [ 75.380008][ T8686] Oops: 0000 [#2] PREEMPT SMP KASAN [ 75.385197][ T8686] CPU: 0 PID: 8686 Comm: syz-executor193 Tainted: G B D 5.4.0-rc6-next-20191108 #0 [ 75.395581][ T8686] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.405628][ T8686] RIP: 0010:memcpy_erms+0x6/0x10 [ 75.410556][ T8686] 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 [ 75.430146][ T8686] RSP: 0018:ffff888098cb7d50 EFLAGS: 00010246 [ 75.436189][ T8686] RAX: ffff888098cb7e12 RBX: ffff888098cb7e00 RCX: 0000000000000001 [ 75.444139][ T8686] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff888098cb7e12 [ 75.452101][ T8686] RBP: ffff888098cb7d70 R08: 1ffff11013196fc2 R09: ffffed1013196fc3 [ 75.460074][ T8686] R10: ffffed1013196fc2 R11: ffff888098cb7e12 R12: 0000000000000001 [ 75.468033][ T8686] R13: ffff888098cb7e12 R14: 0000000000000000 R15: ffffffff8867b340 [ 75.475986][ T8686] FS: 000000000177b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 75.484907][ T8686] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.491467][ T8686] CR2: 0000000000000000 CR3: 000000008c13d000 CR4: 00000000001406f0 [ 75.499424][ T8686] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.507394][ T8686] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.515354][ T8686] Call Trace: [ 75.518628][ T8686] ? memcpy+0x46/0x50 [ 75.522603][ T8686] llcp_sock_getname+0x358/0x460 [ 75.527524][ T8686] __sys_getpeername+0x12b/0x290 [ 75.532454][ T8686] ? __ia32_sys_getsockname+0xb0/0xb0 [ 75.537809][ T8686] ? up_read+0x1cd/0x810 [ 75.542034][ T8686] ? __kasan_check_write+0x14/0x20 [ 75.547124][ T8686] ? switch_fpu_return+0x1fa/0x4f0 [ 75.552213][ T8686] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 75.558275][ T8686] __x64_sys_getpeername+0x73/0xb0 [ 75.563374][ T8686] do_syscall_64+0xfa/0x760 [ 75.567873][ T8686] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.573752][ T8686] RIP: 0033:0x4412b9 [ 75.577726][ T8686] 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 [ 75.597308][ T8686] RSP: 002b:00007fffe89b0938 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 75.605696][ T8686] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412b9 [ 75.613664][ T8686] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 75.621613][ T8686] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 executing program [ 75.629574][ T8686] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402030 [ 75.637524][ T8686] R13: 00000000004020c0 R14: 0000000000000000 R15: 0000000000000000 [ 75.645478][ T8686] Modules linked in: [ 75.649349][ T8686] CR2: 0000000000000000 [ 75.653510][ T8687] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 75.656132][ T8686] ---[ end trace 1b17cc2fca4ffb15 ]--- [ 75.661310][ T8687] #PF: supervisor read access in kernel mode [ 75.661316][ T8687] #PF: error_code(0x0000) - not-present page executing program executing program [ 75.661322][ T8687] PGD 86c2d067 P4D 86c2d067 PUD a0f3c067 PMD 0 [ 75.661342][ T8687] Oops: 0000 [#3] PREEMPT SMP KASAN [ 75.661360][ T8687] CPU: 1 PID: 8687 Comm: syz-executor193 Tainted: G B D 5.4.0-rc6-next-20191108 #0 [ 75.670046][ T8686] RIP: 0010:memcpy_erms+0x6/0x10 [ 75.672764][ T8687] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.672778][ T8687] RIP: 0010:memcpy_erms+0x6/0x10 executing program executing program [ 75.672790][ T8687] 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 [ 75.672796][ T8687] RSP: 0018:ffff8880a9b47d50 EFLAGS: 00010246 [ 75.672805][ T8687] RAX: ffff8880a9b47e12 RBX: ffff8880a9b47e00 RCX: 0000000000000001 [ 75.672812][ T8687] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8880a9b47e12 [ 75.672818][ T8687] RBP: ffff8880a9b47d70 R08: 1ffff11015368fc2 R09: ffffed1015368fc3 [ 75.672831][ T8687] R10: ffffed1015368fc2 R11: ffff8880a9b47e12 R12: 0000000000000001 executing program executing program [ 75.679734][ T8686] 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 [ 75.685012][ T8687] R13: ffff8880a9b47e12 R14: 0000000000000000 R15: ffffffff8867b340 [ 75.685023][ T8687] FS: 000000000177b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 75.685031][ T8687] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.685038][ T8687] CR2: 0000000000000000 CR3: 0000000094459000 CR4: 00000000001406e0 [ 75.685049][ T8687] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.685055][ T8687] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.685059][ T8687] Call Trace: [ 75.685072][ T8687] ? memcpy+0x46/0x50 [ 75.685089][ T8687] llcp_sock_getname+0x358/0x460 [ 75.693247][ T8686] RSP: 0018:ffff888099ae7d50 EFLAGS: 00010246 [ 75.700646][ T8687] __sys_getpeername+0x12b/0x290 [ 75.700660][ T8687] ? __ia32_sys_getsockname+0xb0/0xb0 [ 75.700676][ T8687] ? up_read+0x1cd/0x810 [ 75.708939][ T8686] RAX: ffff888099ae7e12 RBX: ffff888099ae7e00 RCX: 0000000000000001 [ 75.715651][ T8687] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.715664][ T8687] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 75.715680][ T8687] __x64_sys_getpeername+0x73/0xb0 [ 75.715698][ T8687] do_syscall_64+0xfa/0x760 [ 75.721399][ T8686] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff888099ae7e12 [ 75.740206][ T8687] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.740217][ T8687] RIP: 0033:0x4412b9 [ 75.740229][ T8687] 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 [ 75.740236][ T8687] RSP: 002b:00007fffe89b0938 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 75.740246][ T8687] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412b9 [ 75.740252][ T8687] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 75.740258][ T8687] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 75.740270][ T8687] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402030 [ 75.749485][ T8686] RBP: ffff888099ae7d70 R08: 1ffff1101335cfc2 R09: ffffed101335cfc3 [ 75.754276][ T8687] R13: 00000000004020c0 R14: 0000000000000000 R15: 0000000000000000 [ 75.754289][ T8687] Modules linked in: [ 75.754299][ T8687] CR2: 0000000000000000 [ 75.756504][ T8687] ---[ end trace 1b17cc2fca4ffb16 ]--- [ 75.763135][ T8686] R10: ffffed101335cfc2 R11: ffff888099ae7e12 R12: 0000000000000001 [ 75.773620][ T8687] RIP: 0010:memcpy_erms+0x6/0x10 [ 75.780723][ T8684] Kernel panic - not syncing: panic_on_warn set ... [ 75.803657][ T8687] 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 [ 75.808015][ T8684] Kernel Offset: disabled [ 76.059975][ T8684] Rebooting in 86400 seconds..