[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 63.242128][ T26] audit: type=1800 audit(1563570738.946:25): pid=9065 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 63.281845][ T26] audit: type=1800 audit(1563570738.946:26): pid=9065 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 63.302890][ T26] audit: type=1800 audit(1563570738.956:27): pid=9065 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 '10.128.1.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.080064][ T9217] netlink: 4 bytes leftover after parsing attributes in process `syz-executor767'. [ 73.089691][ T9217] kasan: CONFIG_KASAN_INLINE enabled [ 73.095419][ T9217] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 73.108701][ T9217] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 73.115652][ T9217] CPU: 0 PID: 9217 Comm: syz-executor767 Not tainted 5.2.0-next-20190718 #41 [ 73.124394][ T9217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.134459][ T9217] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 73.139825][ T9217] Code: 00 00 48 c7 c7 80 c0 da 88 e8 10 6e a1 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 73.159422][ T9217] RSP: 0018:ffff888091e9eeb8 EFLAGS: 00010246 [ 73.165473][ T9217] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110115e0989 [ 73.173457][ T9217] RDX: 0000000000000000 RSI: 1ffff110115e0990 RDI: 0000000000000282 [ 73.181670][ T9217] RBP: ffff888091e9f060 R08: 0000000000000002 R09: ffff88808af04c50 [ 73.190249][ T9217] R10: fffffbfff134a3ff R11: ffffffff89a51fff R12: 0000000000000001 [ 73.198213][ T9217] R13: ffff88809bf36900 R14: ffff888091e9f8c0 R15: 0000000000000000 [ 73.206182][ T9217] FS: 0000555556cec880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 73.215110][ T9217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.221684][ T9217] CR2: 0000000020000180 CR3: 000000009a509000 CR4: 00000000001406f0 [ 73.229654][ T9217] Call Trace: [ 73.232939][ T9217] ? tc_lookup_action_n+0xd2/0x100 [ 73.238058][ T9217] ? __add_metainfo+0x480/0x480 [ 73.242917][ T9217] ? tc_lookup_action_n+0xd2/0x100 [ 73.248022][ T9217] ? __kasan_check_read+0x11/0x20 [ 73.253045][ T9217] ? lock_downgrade+0x920/0x920 [ 73.257897][ T9217] ? __kasan_check_write+0x14/0x20 [ 73.263032][ T9217] ? do_raw_read_unlock+0x3f/0x70 [ 73.268048][ T9217] tcf_action_init_1+0x6f2/0xa80 [ 73.272979][ T9217] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.279211][ T9217] ? tcf_action_dump_old+0x80/0x80 [ 73.284314][ T9217] ? lock_downgrade+0x920/0x920 [ 73.289174][ T9217] ? __kasan_check_read+0x11/0x20 [ 73.294184][ T9217] ? mark_lock+0xc0/0x11e0 [ 73.298597][ T9217] tcf_action_init+0x241/0x360 [ 73.303402][ T9217] ? tcf_action_init_1+0xa80/0xa80 [ 73.308506][ T9217] ? mark_lock+0xc0/0x11e0 [ 73.312917][ T9217] ? mark_lock+0xc0/0x11e0 [ 73.317353][ T9217] ? __kasan_check_read+0x11/0x20 [ 73.322375][ T9217] tcf_action_add+0xe8/0x370 [ 73.326964][ T9217] ? tca_action_gd+0x1710/0x1710 [ 73.331896][ T9217] ? refcount_dec_not_one+0x1f0/0x1f0 [ 73.337303][ T9217] ? __nla_parse+0x43/0x60 [ 73.341733][ T9217] tc_ctl_action+0x3b5/0x4bc [ 73.346319][ T9217] ? tcf_action_add+0x370/0x370 [ 73.351568][ T9217] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.357859][ T9217] ? tcf_action_add+0x370/0x370 [ 73.362728][ T9217] rtnetlink_rcv_msg+0x463/0xb00 [ 73.367675][ T9217] ? rtnetlink_put_metrics+0x580/0x580 [ 73.373154][ T9217] ? lock_downgrade+0x920/0x920 [ 73.378020][ T9217] ? netlink_deliver_tap+0x22d/0xbf0 [ 73.383417][ T9217] ? find_held_lock+0x35/0x130 [ 73.388319][ T9217] netlink_rcv_skb+0x177/0x450 [ 73.394169][ T9217] ? rtnetlink_put_metrics+0x580/0x580 [ 73.399641][ T9217] ? netlink_ack+0xb30/0xb30 [ 73.404225][ T9217] ? __kasan_check_read+0x11/0x20 [ 73.409241][ T9217] ? netlink_deliver_tap+0x254/0xbf0 [ 73.414542][ T9217] rtnetlink_rcv+0x1d/0x30 [ 73.419136][ T9217] netlink_unicast+0x531/0x710 [ 73.423893][ T9217] ? netlink_attachskb+0x7c0/0x7c0 [ 73.429172][ T9217] ? _copy_from_iter_full+0x25d/0x8a0 [ 73.434538][ T9217] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 73.440432][ T9217] ? __check_object_size+0x3d/0x43c [ 73.445633][ T9217] netlink_sendmsg+0x8a5/0xd60 [ 73.450393][ T9217] ? netlink_unicast+0x710/0x710 [ 73.455323][ T9217] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 73.460866][ T9217] ? apparmor_socket_sendmsg+0x2a/0x30 [ 73.466328][ T9217] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.472585][ T9217] ? security_socket_sendmsg+0x8d/0xc0 [ 73.478041][ T9217] ? netlink_unicast+0x710/0x710 [ 73.482968][ T9217] sock_sendmsg+0xd7/0x130 [ 73.487373][ T9217] ___sys_sendmsg+0x803/0x920 [ 73.492043][ T9217] ? copy_msghdr_from_user+0x440/0x440 [ 73.502425][ T9217] ? prep_transhuge_page+0xa0/0xa0 [ 73.507553][ T9217] ? percpu_counter_add_batch+0x13c/0x190 [ 73.513268][ T9217] ? __do_page_fault+0x56a/0xdd0 [ 73.518284][ T9217] ? find_held_lock+0x35/0x130 [ 73.523175][ T9217] ? __do_page_fault+0x56a/0xdd0 [ 73.528117][ T9217] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.534357][ T9217] ? __fget_light+0x1a9/0x230 [ 73.539029][ T9217] ? __fdget+0x1b/0x20 [ 73.543094][ T9217] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 73.549330][ T9217] __sys_sendmsg+0x105/0x1d0 [ 73.553915][ T9217] ? __sys_sendmsg_sock+0xd0/0xd0 [ 73.558945][ T9217] ? down_read_non_owner+0x450/0x450 [ 73.564229][ T9217] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 73.569684][ T9217] ? do_syscall_64+0x26/0x6a0 [ 73.574374][ T9217] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.580427][ T9217] ? do_syscall_64+0x26/0x6a0 [ 73.585098][ T9217] __x64_sys_sendmsg+0x78/0xb0 [ 73.589854][ T9217] do_syscall_64+0xfd/0x6a0 [ 73.595750][ T9217] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.601641][ T9217] RIP: 0033:0x4401d9 [ 73.605558][ T9217] 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 [ 73.625156][ T9217] RSP: 002b:00007ffd051e8da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.633556][ T9217] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 73.641521][ T9217] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 73.649493][ T9217] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 73.657462][ T9217] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 73.665420][ T9217] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 73.673379][ T9217] Modules linked in: [ 73.678427][ T9217] ---[ end trace d6784570c01637b6 ]--- [ 73.683979][ T9217] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 73.689354][ T9217] Code: 00 00 48 c7 c7 80 c0 da 88 e8 10 6e a1 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 73.709047][ T9217] RSP: 0018:ffff888091e9eeb8 EFLAGS: 00010246 [ 73.715167][ T9217] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110115e0989 [ 73.723182][ T9217] RDX: 0000000000000000 RSI: 1ffff110115e0990 RDI: 0000000000000282 [ 73.731465][ T9217] RBP: ffff888091e9f060 R08: 0000000000000002 R09: ffff88808af04c50 [ 73.739511][ T9217] R10: fffffbfff134a3ff R11: ffffffff89a51fff R12: 0000000000000001 [ 73.747520][ T9217] R13: ffff88809bf36900 R14: ffff888091e9f8c0 R15: 0000000000000000 [ 73.755551][ T9217] FS: 0000555556cec880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 73.764526][ T9217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.771122][ T9217] CR2: 0000000020000180 CR3: 000000009a509000 CR4: 00000000001406f0 [ 73.779152][ T9217] Kernel panic - not syncing: Fatal exception [ 73.786275][ T9217] Kernel Offset: disabled [ 73.790604][ T9217] Rebooting in 86400 seconds..