[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 63.641349][ T24] audit: type=1800 audit(1562825404.736:25): pid=8893 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 63.680643][ T24] audit: type=1800 audit(1562825404.736:26): pid=8893 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 63.712283][ T24] audit: type=1800 audit(1562825404.736:27): pid=8893 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 '10.128.10.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 87.771552][ T9045] kasan: CONFIG_KASAN_INLINE enabled [ 87.777094][ T9045] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 87.785228][ T9045] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 87.792168][ T9045] CPU: 1 PID: 9045 Comm: syz-executor699 Not tainted 5.2.0-next-20190710 #35 [ 87.800899][ T9045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.811039][ T9045] RIP: 0010:ip6_datagram_dst_update+0x559/0xc30 [ 87.817260][ T9045] Code: 00 00 e8 da 6c 2d fb 4d 85 f6 0f 84 96 04 00 00 e8 cc 6c 2d 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 a4 6c 2d fb 4c 89 ee [ 87.837147][ T9045] RSP: 0018:ffff8880964d7ae0 EFLAGS: 00010207 [ 87.843195][ T9045] RAX: dffffc0000000000 RBX: ffff88809c0545b0 RCX: ffffffff8644dc22 [ 87.851270][ T9045] RDX: 0000000000000003 RSI: ffffffff8644d844 RDI: 000000000000001e [ 87.859226][ T9045] RBP: ffff8880964d7c10 R08: ffff88809f320140 R09: ffffed1015d26c84 [ 87.867244][ T9045] R10: ffffed1015d26c83 R11: ffff8880ae93641b R12: ffff88809c054040 [ 87.875200][ T9045] R13: 0000000000000001 R14: fffffffffffffffe R15: ffff8880964d7b40 [ 87.883151][ T9045] FS: 0000555557192880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 87.892119][ T9045] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.898686][ T9045] CR2: 0000000020000016 CR3: 000000009031d000 CR4: 00000000001406e0 [ 87.906634][ T9045] Call Trace: [ 87.909906][ T9045] ? ip6_datagram_send_ctl+0x1b80/0x1b80 [ 87.915514][ T9045] ? __kasan_check_read+0x11/0x20 [ 87.920518][ T9045] ? __lock_acquire+0x1702/0x4c30 [ 87.925532][ T9045] ? __kasan_check_read+0x11/0x20 [ 87.930536][ T9045] ? mark_lock+0xc0/0x11e0 [ 87.934942][ T9045] __ip6_datagram_connect+0x5e9/0x1390 [ 87.940372][ T9045] ? __ip6_datagram_connect+0x5e9/0x1390 [ 87.945990][ T9045] ? ip6_datagram_release_cb+0x550/0x550 [ 87.951603][ T9045] ? lock_sock_nested+0x9a/0x120 [ 87.956514][ T9045] ? __local_bh_enable_ip+0x15a/0x270 [ 87.961866][ T9045] ip6_datagram_connect+0x30/0x50 [ 87.966865][ T9045] ? ip6_datagram_connect+0x30/0x50 [ 87.972039][ T9045] ip6_datagram_connect_v6_only+0x69/0x90 [ 87.977804][ T9045] inet_dgram_connect+0x14a/0x2d0 [ 87.982816][ T9045] __sys_connect+0x264/0x330 [ 87.987380][ T9045] ? __ia32_sys_accept+0xb0/0xb0 [ 87.992429][ T9045] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 87.998654][ T9045] ? handle_mm_fault+0x1d3/0x6b0 [ 88.003579][ T9045] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 88.009013][ T9045] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 88.014446][ T9045] ? do_syscall_64+0x26/0x6a0 [ 88.019099][ T9045] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.025143][ T9045] ? do_syscall_64+0x26/0x6a0 [ 88.029801][ T9045] __x64_sys_connect+0x73/0xb0 [ 88.034546][ T9045] do_syscall_64+0xfd/0x6a0 [ 88.039129][ T9045] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.044995][ T9045] RIP: 0033:0x440309 [ 88.048863][ T9045] 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 [ 88.068442][ T9045] RSP: 002b:00007ffd8b585758 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 88.076836][ T9045] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 88.084790][ T9045] RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000003 [ 88.092741][ T9045] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 88.100690][ T9045] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401b90 [ 88.108636][ T9045] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 88.116590][ T9045] Modules linked in: [ 88.121193][ T9045] ---[ end trace dd7c0e2372b572c0 ]--- [ 88.126761][ T9045] RIP: 0010:ip6_datagram_dst_update+0x559/0xc30 [ 88.133023][ T9045] Code: 00 00 e8 da 6c 2d fb 4d 85 f6 0f 84 96 04 00 00 e8 cc 6c 2d 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 a4 6c 2d fb 4c 89 ee [ 88.152665][ T9045] RSP: 0018:ffff8880964d7ae0 EFLAGS: 00010207 [ 88.158716][ T9045] RAX: dffffc0000000000 RBX: ffff88809c0545b0 RCX: ffffffff8644dc22 [ 88.166734][ T9045] RDX: 0000000000000003 RSI: ffffffff8644d844 RDI: 000000000000001e [ 88.174756][ T9045] RBP: ffff8880964d7c10 R08: ffff88809f320140 R09: ffffed1015d26c84 [ 88.182817][ T9045] R10: ffffed1015d26c83 R11: ffff8880ae93641b R12: ffff88809c054040 [ 88.190849][ T9045] R13: 0000000000000001 R14: fffffffffffffffe R15: ffff8880964d7b40 [ 88.198806][ T9045] FS: 0000555557192880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 88.207749][ T9045] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.214354][ T9045] CR2: 0000000020000016 CR3: 000000009031d000 CR4: 00000000001406e0 [ 88.222384][ T9045] Kernel panic - not syncing: Fatal exception [ 88.229309][ T9045] Kernel Offset: disabled [ 88.233629][ T9045] Rebooting in 86400 seconds..