[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 82.970337][ T26] audit: type=1800 audit(1578729392.035:25): pid=9405 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.990789][ T26] audit: type=1800 audit(1578729392.045:26): pid=9405 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.056605][ T26] audit: type=1800 audit(1578729392.045:27): pid=9405 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 '10.128.0.126' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 95.694866][ T9559] netlink: 4 bytes leftover after parsing attributes in process `syz-executor354'. [ 95.705727][ T9559] kasan: CONFIG_KASAN_INLINE enabled [ 95.714670][ T9559] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 95.723406][ T9559] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 95.730953][ T9559] CPU: 0 PID: 9559 Comm: syz-executor354 Not tainted 5.5.0-rc5-syzkaller #0 [ 95.739723][ T9559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.750232][ T9559] RIP: 0010:tcf_ife_cleanup+0x6e/0x400 [ 95.755783][ T9559] Code: 48 c1 ea 03 80 3c 02 00 0f 85 94 03 00 00 49 8b bd f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 67 e8 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 03 00 00 48 bb 00 00 00 00 00 fc ff df 48 8b [ 95.776114][ T9559] RSP: 0018:ffffc90001ce6d00 EFLAGS: 00010246 [ 95.782645][ T9559] RAX: dffffc0000000000 RBX: ffffffff8647e380 RCX: ffffffff815c04b9 [ 95.793102][ T9559] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 95.801111][ T9559] RBP: ffffc90001ce6d50 R08: 0000000000000004 R09: fffff5200039cd8e [ 95.809375][ T9559] R10: fffff5200039cd8d R11: 0000000000000003 R12: ffffffffffffffe8 [ 95.817356][ T9559] R13: ffff88809dca2800 R14: ffff888215bb0a00 R15: 0000000000000000 [ 95.825509][ T9559] FS: 000000000235d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 95.834544][ T9559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.841639][ T9559] CR2: 0000000020007300 CR3: 00000000a378e000 CR4: 00000000001406f0 [ 95.849610][ T9559] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.857870][ T9559] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.866868][ T9559] Call Trace: [ 95.870556][ T9559] ? unregister_ife_op+0x270/0x270 [ 95.875958][ T9559] tcf_action_cleanup+0x62/0x1b0 [ 95.881031][ T9559] __tcf_action_put+0xfa/0x130 [ 95.885974][ T9559] __tcf_idr_release+0x59/0xf0 [ 95.891081][ T9559] tcf_ife_init+0x97c/0x1870 [ 95.895765][ T9559] ? tcf_ife_dump+0xc00/0xc00 [ 95.900527][ T9559] ? tc_lookup_action_n+0xd2/0x100 [ 95.906091][ T9559] ? lock_downgrade+0x920/0x920 [ 95.911141][ T9559] ? __kasan_check_write+0x14/0x20 [ 95.916382][ T9559] ? do_raw_read_unlock+0x3f/0x70 [ 95.921402][ T9559] tcf_action_init_1+0x6b6/0xa40 [ 95.926478][ T9559] ? tcf_action_dump_old+0x80/0x80 [ 95.931738][ T9559] ? __nla_validate_parse+0x2d0/0x1ee0 [ 95.937277][ T9559] ? __kasan_check_read+0x11/0x20 [ 95.942396][ T9559] ? mark_lock+0xc2/0x1220 [ 95.946807][ T9559] ? is_bpf_text_address+0xac/0x160 [ 95.952164][ T9559] tcf_action_init+0x21a/0x330 [ 95.957270][ T9559] ? tcf_action_init_1+0xa40/0xa40 [ 95.962468][ T9559] ? __lock_acquire+0x16f2/0x4a00 [ 95.967594][ T9559] ? mark_lock+0xc2/0x1220 [ 95.972447][ T9559] ? __kasan_check_read+0x11/0x20 [ 95.978106][ T9559] tcf_action_add+0xf5/0x3b0 [ 95.982813][ T9559] ? tca_action_gd+0x1760/0x1760 [ 95.987754][ T9559] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.994061][ T9559] ? __nla_parse+0x43/0x60 [ 95.998606][ T9559] tc_ctl_action+0x390/0x488 [ 96.003333][ T9559] ? tcf_action_add+0x3b0/0x3b0 [ 96.008229][ T9559] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 96.015042][ T9559] ? tcf_action_add+0x3b0/0x3b0 [ 96.020153][ T9559] rtnetlink_rcv_msg+0x45e/0xaf0 [ 96.025160][ T9559] ? rtnl_bridge_getlink+0x910/0x910 [ 96.030533][ T9559] ? lock_downgrade+0x920/0x920 [ 96.035696][ T9559] ? netlink_deliver_tap+0x228/0xbf0 [ 96.040979][ T9559] ? find_held_lock+0x35/0x130 [ 96.045831][ T9559] netlink_rcv_skb+0x177/0x450 [ 96.050784][ T9559] ? rtnl_bridge_getlink+0x910/0x910 [ 96.056296][ T9559] ? netlink_ack+0xb50/0xb50 [ 96.061047][ T9559] ? __kasan_check_read+0x11/0x20 [ 96.066087][ T9559] ? netlink_deliver_tap+0x24a/0xbf0 [ 96.071631][ T9559] rtnetlink_rcv+0x1d/0x30 [ 96.076256][ T9559] netlink_unicast+0x59e/0x7e0 [ 96.082301][ T9559] ? netlink_attachskb+0x870/0x870 [ 96.087512][ T9559] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 96.093615][ T9559] ? __check_object_size+0x3d/0x437 [ 96.099115][ T9559] netlink_sendmsg+0x91c/0xea0 [ 96.103885][ T9559] ? netlink_unicast+0x7e0/0x7e0 [ 96.108952][ T9559] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 96.114587][ T9559] ? apparmor_socket_sendmsg+0x2a/0x30 [ 96.120041][ T9559] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.126430][ T9559] ? security_socket_sendmsg+0x8d/0xc0 [ 96.131971][ T9559] ? netlink_unicast+0x7e0/0x7e0 [ 96.136947][ T9559] sock_sendmsg+0xd7/0x130 [ 96.141393][ T9559] ____sys_sendmsg+0x753/0x880 [ 96.146280][ T9559] ? kernel_sendmsg+0x50/0x50 [ 96.150950][ T9559] ? mark_held_locks+0xa4/0xf0 [ 96.155736][ T9559] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 96.161797][ T9559] ? __handle_mm_fault+0x3145/0x3cc0 [ 96.167117][ T9559] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 96.173403][ T9559] ___sys_sendmsg+0x100/0x170 [ 96.178778][ T9559] ? do_huge_pmd_anonymous_page+0xceb/0x1a50 [ 96.185072][ T9559] ? sendmsg_copy_msghdr+0x70/0x70 [ 96.190613][ T9559] ? __do_page_fault+0x56a/0xd80 [ 96.196334][ T9559] ? find_held_lock+0x35/0x130 [ 96.201711][ T9559] ? __do_page_fault+0x56a/0xd80 [ 96.206783][ T9559] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.213215][ T9559] ? __fget_light+0x1a9/0x230 [ 96.218074][ T9559] ? __fdget+0x1b/0x20 [ 96.222732][ T9559] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 96.229707][ T9559] __sys_sendmsg+0x105/0x1d0 [ 96.234923][ T9559] ? __sys_sendmsg_sock+0xc0/0xc0 [ 96.240302][ T9559] ? down_read_non_owner+0x490/0x490 [ 96.245594][ T9559] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 96.251448][ T9559] ? do_syscall_64+0x26/0x790 [ 96.256226][ T9559] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.262444][ T9559] ? do_syscall_64+0x26/0x790 [ 96.267118][ T9559] __x64_sys_sendmsg+0x78/0xb0 [ 96.271917][ T9559] do_syscall_64+0xfa/0x790 [ 96.276952][ T9559] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.284045][ T9559] RIP: 0033:0x440269 [ 96.288306][ T9559] 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 [ 96.308456][ T9559] RSP: 002b:00007ffee1d1f6b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.317753][ T9559] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440269 [ 96.325792][ T9559] RDX: 0000000000000000 RSI: 0000000020007300 RDI: 0000000000000003 [ 96.333892][ T9559] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 96.341940][ T9559] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401af0 [ 96.350040][ T9559] R13: 0000000000401b80 R14: 0000000000000000 R15: 0000000000000000 [ 96.358008][ T9559] Modules linked in: [ 96.361944][ T9559] ---[ end trace 02aa1ae598f1fa54 ]--- [ 96.367501][ T9559] RIP: 0010:tcf_ife_cleanup+0x6e/0x400 [ 96.372987][ T9559] Code: 48 c1 ea 03 80 3c 02 00 0f 85 94 03 00 00 49 8b bd f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 67 e8 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 03 00 00 48 bb 00 00 00 00 00 fc ff df 48 8b [ 96.393028][ T9559] RSP: 0018:ffffc90001ce6d00 EFLAGS: 00010246 [ 96.399089][ T9559] RAX: dffffc0000000000 RBX: ffffffff8647e380 RCX: ffffffff815c04b9 [ 96.407204][ T9559] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 96.415374][ T9559] RBP: ffffc90001ce6d50 R08: 0000000000000004 R09: fffff5200039cd8e [ 96.423371][ T9559] R10: fffff5200039cd8d R11: 0000000000000003 R12: ffffffffffffffe8 [ 96.431445][ T9559] R13: ffff88809dca2800 R14: ffff888215bb0a00 R15: 0000000000000000 [ 96.439587][ T9559] FS: 000000000235d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 96.448580][ T9559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 96.455321][ T9559] CR2: 0000000020007300 CR3: 00000000a378e000 CR4: 00000000001406f0 [ 96.463323][ T9559] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 96.471543][ T9559] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 96.479804][ T9559] Kernel panic - not syncing: Fatal exception in interrupt [ 96.489035][ T9559] Kernel Offset: disabled [ 96.493384][ T9559] Rebooting in 86400 seconds..