[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.018191][ T27] audit: type=1800 audit(1563580734.864:25): pid=8993 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.061454][ T27] audit: type=1800 audit(1563580734.874:26): pid=8993 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.116156][ T27] audit: type=1800 audit(1563580734.874:27): pid=8993 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 '10.128.0.221' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.248201][ T9146] netlink: 4 bytes leftover after parsing attributes in process `syz-executor777'. [ 76.257658][ T9146] kasan: CONFIG_KASAN_INLINE enabled [ 76.263143][ T9146] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 76.271600][ T9146] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 76.278542][ T9146] CPU: 1 PID: 9146 Comm: syz-executor777 Not tainted 5.2.0+ #67 [ 76.286183][ T9146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.296255][ T9146] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 76.301634][ T9146] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d a2 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 [ 76.321307][ T9146] RSP: 0018:ffff888096daeeb8 EFLAGS: 00010246 [ 76.327371][ T9146] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11011666d78 [ 76.335332][ T9146] RDX: 0000000000000000 RSI: 1ffff11011666d7f RDI: 0000000000000286 [ 76.343295][ T9146] RBP: ffff888096daf060 R08: 0000000000000002 R09: ffff88808b336bc8 [ 76.351437][ T9146] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 76.359394][ T9146] R13: ffff8882162976c0 R14: ffff888096daf8c0 R15: 0000000000000000 [ 76.367354][ T9146] FS: 00005555558e4880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 76.376271][ T9146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.382857][ T9146] CR2: 0000000020000180 CR3: 0000000090a82000 CR4: 00000000001406e0 [ 76.390842][ T9146] Call Trace: [ 76.394150][ T9146] ? tc_lookup_action_n+0xd2/0x100 [ 76.399255][ T9146] ? __add_metainfo+0x480/0x480 [ 76.404089][ T9146] ? tc_lookup_action_n+0xd2/0x100 [ 76.409197][ T9146] ? __kasan_check_read+0x11/0x20 [ 76.414206][ T9146] ? lock_downgrade+0x920/0x920 [ 76.419044][ T9146] ? __kasan_check_write+0x14/0x20 [ 76.424141][ T9146] ? do_raw_read_unlock+0x3f/0x70 [ 76.429155][ T9146] tcf_action_init_1+0x6f2/0xa80 [ 76.434079][ T9146] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.440302][ T9146] ? tcf_action_dump_old+0x80/0x80 [ 76.445396][ T9146] ? lock_downgrade+0x920/0x920 [ 76.450259][ T9146] ? __kasan_check_read+0x11/0x20 [ 76.455270][ T9146] ? mark_lock+0xc0/0x11e0 [ 76.459670][ T9146] tcf_action_init+0x241/0x360 [ 76.464441][ T9146] ? tcf_action_init_1+0xa80/0xa80 [ 76.469542][ T9146] ? mark_lock+0xc0/0x11e0 [ 76.473949][ T9146] ? mark_lock+0xc0/0x11e0 [ 76.478355][ T9146] ? __kasan_check_read+0x11/0x20 [ 76.483376][ T9146] tcf_action_add+0xe8/0x370 [ 76.487958][ T9146] ? tca_action_gd+0x1710/0x1710 [ 76.492905][ T9146] ? refcount_dec_not_one+0x1f0/0x1f0 [ 76.498296][ T9146] ? __nla_parse+0x43/0x60 [ 76.502698][ T9146] tc_ctl_action+0x3b5/0x4bc [ 76.507476][ T9146] ? tcf_action_add+0x370/0x370 [ 76.512320][ T9146] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.518652][ T9146] ? tcf_action_add+0x370/0x370 [ 76.523512][ T9146] rtnetlink_rcv_msg+0x463/0xb00 [ 76.528444][ T9146] ? rtnetlink_put_metrics+0x580/0x580 [ 76.533885][ T9146] ? lock_downgrade+0x920/0x920 [ 76.538722][ T9146] ? netlink_deliver_tap+0x22d/0xbf0 [ 76.544030][ T9146] ? find_held_lock+0x35/0x130 [ 76.548785][ T9146] netlink_rcv_skb+0x177/0x450 [ 76.553535][ T9146] ? rtnetlink_put_metrics+0x580/0x580 [ 76.558981][ T9146] ? netlink_ack+0xb30/0xb30 [ 76.563553][ T9146] ? __kasan_check_read+0x11/0x20 [ 76.568562][ T9146] ? netlink_deliver_tap+0x254/0xbf0 [ 76.573871][ T9146] rtnetlink_rcv+0x1d/0x30 [ 76.578270][ T9146] netlink_unicast+0x531/0x710 [ 76.583021][ T9146] ? netlink_attachskb+0x7c0/0x7c0 [ 76.588126][ T9146] ? _copy_from_iter_full+0x25d/0x8a0 [ 76.593497][ T9146] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 76.599223][ T9146] ? __check_object_size+0x3d/0x43c [ 76.604422][ T9146] netlink_sendmsg+0x8a5/0xd60 [ 76.609172][ T9146] ? netlink_unicast+0x710/0x710 [ 76.614116][ T9146] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 76.619647][ T9146] ? apparmor_socket_sendmsg+0x2a/0x30 [ 76.625114][ T9146] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.631370][ T9146] ? security_socket_sendmsg+0x8d/0xc0 [ 76.636828][ T9146] ? netlink_unicast+0x710/0x710 [ 76.641750][ T9146] sock_sendmsg+0xd7/0x130 [ 76.646159][ T9146] ___sys_sendmsg+0x803/0x920 [ 76.650847][ T9146] ? copy_msghdr_from_user+0x440/0x440 [ 76.656294][ T9146] ? prep_transhuge_page+0xa0/0xa0 [ 76.661492][ T9146] ? percpu_counter_add_batch+0x13c/0x190 [ 76.667404][ T9146] ? __do_page_fault+0x56a/0xdd0 [ 76.672330][ T9146] ? find_held_lock+0x35/0x130 [ 76.677254][ T9146] ? __do_page_fault+0x56a/0xdd0 [ 76.682197][ T9146] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.688420][ T9146] ? __fget_light+0x1a9/0x230 [ 76.693105][ T9146] ? __fdget+0x1b/0x20 [ 76.697162][ T9146] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.703410][ T9146] __sys_sendmsg+0x105/0x1d0 [ 76.707992][ T9146] ? __sys_sendmsg_sock+0xd0/0xd0 [ 76.713003][ T9146] ? down_read_non_owner+0x450/0x450 [ 76.718274][ T9146] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.723714][ T9146] ? do_syscall_64+0x26/0x6a0 [ 76.728371][ T9146] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.734450][ T9146] ? do_syscall_64+0x26/0x6a0 [ 76.739146][ T9146] __x64_sys_sendmsg+0x78/0xb0 [ 76.743890][ T9146] do_syscall_64+0xfd/0x6a0 [ 76.748373][ T9146] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.754241][ T9146] RIP: 0033:0x4401d9 [ 76.758138][ T9146] 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 [ 76.777752][ T9146] RSP: 002b:00007ffca60dd118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.786169][ T9146] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 76.794149][ T9146] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 76.802122][ T9146] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 76.810184][ T9146] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 76.818162][ T9146] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 76.826134][ T9146] Modules linked in: [ 76.831243][ T9146] ---[ end trace 639f54c52c2eaa37 ]--- [ 76.836714][ T9146] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 76.842157][ T9146] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d a2 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 [ 76.861873][ T9146] RSP: 0018:ffff888096daeeb8 EFLAGS: 00010246 [ 76.867963][ T9146] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11011666d78 [ 76.875980][ T9146] RDX: 0000000000000000 RSI: 1ffff11011666d7f RDI: 0000000000000286 [ 76.884012][ T9146] RBP: ffff888096daf060 R08: 0000000000000002 R09: ffff88808b336bc8 [ 76.892079][ T9146] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 76.900177][ T9146] R13: ffff8882162976c0 R14: ffff888096daf8c0 R15: 0000000000000000 [ 76.908209][ T9146] FS: 00005555558e4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 76.917188][ T9146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.923936][ T9146] CR2: 000055acccca6110 CR3: 0000000090a82000 CR4: 00000000001406f0 [ 76.931966][ T9146] Kernel panic - not syncing: Fatal exception [ 76.939135][ T9146] Kernel Offset: disabled [ 76.943639][ T9146] Rebooting in 86400 seconds..