[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 61.247041][ T26] audit: type=1800 audit(1562748344.685:25): pid=8761 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 61.292143][ T26] audit: type=1800 audit(1562748344.685:26): pid=8761 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 61.343492][ T26] audit: type=1800 audit(1562748344.695:27): pid=8761 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 '10.128.0.61' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.046328][ T8913] kasan: CONFIG_KASAN_INLINE enabled [ 71.051676][ T8913] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 71.059829][ T8913] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 71.066782][ T8913] CPU: 0 PID: 8913 Comm: syz-executor732 Not tainted 5.2.0-rc6+ #63 [ 71.074760][ T8913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.084986][ T8913] RIP: 0010:ip6_datagram_dst_update+0x559/0xc30 [ 71.091238][ T8913] Code: 00 00 e8 ea 29 3f fb 4d 85 f6 0f 84 96 04 00 00 e8 dc 29 3f fb 49 8d 7e 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 16 06 00 00 4d 8b 6e 20 e8 b4 29 3f fb 4c 89 ee [ 71.110920][ T8913] RSP: 0018:ffff8880984d7ae0 EFLAGS: 00010207 [ 71.116977][ T8913] RAX: dffffc0000000000 RBX: ffff888089731a30 RCX: ffffffff86319e62 [ 71.124947][ T8913] RDX: 0000000000000003 RSI: ffffffff86319a84 RDI: 000000000000001e [ 71.132906][ T8913] RBP: ffff8880984d7c10 R08: ffff888099b00680 R09: ffffed1015d06c80 [ 71.140864][ T8913] R10: ffffed1015d06c7f R11: ffff8880ae8363fb R12: ffff8880897314c0 [ 71.148820][ T8913] R13: 0000000000000001 R14: fffffffffffffffe R15: ffff8880984d7b40 [ 71.156797][ T8913] FS: 0000555557531880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.165709][ T8913] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.172382][ T8913] CR2: 0000000020000016 CR3: 00000000a0c19000 CR4: 00000000001406f0 [ 71.180431][ T8913] Call Trace: [ 71.183714][ T8913] ? ip6_datagram_send_ctl+0x1b60/0x1b60 [ 71.189331][ T8913] ? lock_sock_nested+0xac/0x120 [ 71.194250][ T8913] ? find_held_lock+0x35/0x130 [ 71.199035][ T8913] __ip6_datagram_connect+0x5e9/0x1390 [ 71.204491][ T8913] ? __ip6_datagram_connect+0x5e9/0x1390 [ 71.210117][ T8913] ? ip6_datagram_release_cb+0x550/0x550 [ 71.215751][ T8913] ? lock_sock_nested+0x9a/0x120 [ 71.220676][ T8913] ? __local_bh_enable_ip+0x15a/0x270 [ 71.226034][ T8913] ip6_datagram_connect+0x30/0x50 [ 71.231073][ T8913] ? ip6_datagram_connect+0x30/0x50 [ 71.236268][ T8913] ip6_datagram_connect_v6_only+0x69/0x90 [ 71.241974][ T8913] inet_dgram_connect+0x14a/0x2d0 [ 71.246994][ T8913] __sys_connect+0x264/0x330 [ 71.251665][ T8913] ? __ia32_sys_accept+0xb0/0xb0 [ 71.256601][ T8913] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 71.262062][ T8913] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 71.267579][ T8913] ? do_syscall_64+0x26/0x680 [ 71.272273][ T8913] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.278328][ T8913] ? do_syscall_64+0x26/0x680 [ 71.283017][ T8913] __x64_sys_connect+0x73/0xb0 [ 71.287778][ T8913] do_syscall_64+0xfd/0x680 [ 71.292272][ T8913] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.298149][ T8913] RIP: 0033:0x440309 [ 71.302062][ T8913] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.321682][ T8913] RSP: 002b:00007ffe754101d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 71.330105][ T8913] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 71.338070][ T8913] RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000003 [ 71.346031][ T8913] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 71.354037][ T8913] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401b90 [ 71.362028][ T8913] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 71.370021][ T8913] Modules linked in: [ 71.374614][ T8913] ---[ end trace 796c96037b97def9 ]--- [ 71.380089][ T8913] RIP: 0010:ip6_datagram_dst_update+0x559/0xc30 [ 71.386384][ T8913] Code: 00 00 e8 ea 29 3f fb 4d 85 f6 0f 84 96 04 00 00 e8 dc 29 3f fb 49 8d 7e 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 16 06 00 00 4d 8b 6e 20 e8 b4 29 3f fb 4c 89 ee [ 71.406029][ T8913] RSP: 0018:ffff8880984d7ae0 EFLAGS: 00010207 [ 71.412694][ T8913] RAX: dffffc0000000000 RBX: ffff888089731a30 RCX: ffffffff86319e62 [ 71.430935][ T8913] RDX: 0000000000000003 RSI: ffffffff86319a84 RDI: 000000000000001e [ 71.438945][ T8913] RBP: ffff8880984d7c10 R08: ffff888099b00680 R09: ffffed1015d06c80 [ 71.448572][ T8913] R10: ffffed1015d06c7f R11: ffff8880ae8363fb R12: ffff8880897314c0 [ 71.457117][ T8913] R13: 0000000000000001 R14: fffffffffffffffe R15: ffff8880984d7b40 [ 71.465138][ T8913] FS: 0000555557531880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.474098][ T8913] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.480691][ T8913] CR2: 0000000020000016 CR3: 00000000a0c19000 CR4: 00000000001406f0 [ 71.488821][ T8913] Kernel panic - not syncing: Fatal exception [ 71.495672][ T8913] Kernel Offset: disabled [ 71.500017][ T8913] Rebooting in 86400 seconds..