[ 103.201743][ T33] audit: type=1800 audit(1583754965.247:25): pid=10860 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 103.232599][ T33] audit: type=1800 audit(1583754965.277:26): pid=10860 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 103.272636][ T33] audit: type=1800 audit(1583754965.307:27): pid=10860 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. [ 104.629426][T10928] sshd (10928) used greatest stack depth: 3352 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. syzkaller login: [ 114.838262][T11017] IPVS: ftp: loaded support on port[0] = 21 [ 114.843023][T11020] IPVS: ftp: loaded support on port[0] = 21 [ 114.867733][T11014] IPVS: ftp: loaded support on port[0] = 21 [ 114.878191][T11022] IPVS: ftp: loaded support on port[0] = 21 [ 114.892782][T11023] IPVS: ftp: loaded support on port[0] = 21 [ 114.904655][T11021] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program [ 115.201009][T11024] ===================================================== [ 115.208013][T11024] BUG: KMSAN: uninit-value in tcf_exts_change+0xc9/0xf0 [ 115.215792][T11024] CPU: 0 PID: 11024 Comm: syz-executor435 Not tainted 5.6.0-rc2-syzkaller #0 [ 115.225809][T11024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 115.235874][T11024] Call Trace: [ 115.239185][T11024] dump_stack+0x1c9/0x220 [ 115.243545][T11024] kmsan_report+0xf7/0x1e0 [ 115.247977][T11024] __msan_warning+0x58/0xa0 [ 115.252489][T11024] tcf_exts_change+0xc9/0xf0 [ 115.257079][T11024] tcindex_change+0x2fe4/0x4130 [ 115.261940][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.267140][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.273281][T11024] ? tcindex_get+0x520/0x520 [ 115.277885][T11024] tc_new_tfilter+0x31a8/0x4f40 [ 115.282900][T11024] ? security_capable+0x1cb/0x220 [ 115.287968][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.293406][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.299203][T11024] ? tcf_tunnel_encap_put_tunnel+0x40/0x40 [ 115.305021][T11024] rtnetlink_rcv_msg+0xcb7/0x1570 [ 115.310081][T11024] ? do_syscall_64+0xb8/0x160 [ 115.314770][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.320565][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.326639][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.331858][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.336977][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.348484][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.354575][T11024] ? rhashtable_jhash2+0x3ac/0x4d0 [ 115.359693][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.364913][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.370016][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.375121][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.380224][T11024] ? kmsan_set_origin_checked+0x95/0xf0 [ 115.385782][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.390990][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.396791][T11024] netlink_rcv_skb+0x451/0x650 [ 115.401545][T11024] ? rtnetlink_bind+0x120/0x120 [ 115.406411][T11024] rtnetlink_rcv+0x50/0x60 [ 115.410833][T11024] netlink_unicast+0xf9e/0x1100 [ 115.415732][T11024] ? rtnetlink_net_exit+0x90/0x90 [ 115.420846][T11024] netlink_sendmsg+0x1246/0x14d0 [ 115.425803][T11024] ? netlink_getsockopt+0x1440/0x1440 [ 115.431163][T11024] ____sys_sendmsg+0x12b6/0x1350 [ 115.436130][T11024] __sys_sendmsg+0x451/0x5f0 [ 115.440788][T11024] ? __fpregs_load_activate+0x38c/0x3c0 [ 115.446340][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.451565][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.457384][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.463442][T11024] ? prepare_exit_to_usermode+0x1ca/0x520 [ 115.469188][T11024] __se_sys_sendmsg+0x97/0xb0 [ 115.473880][T11024] __x64_sys_sendmsg+0x4a/0x70 [ 115.478644][T11024] do_syscall_64+0xb8/0x160 [ 115.483147][T11024] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 115.489064][T11024] RIP: 0033:0x441829 [ 115.492962][T11024] Code: e8 2c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 8b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 115.512744][T11024] RSP: 002b:00007ffef55cc568 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 115.522019][T11024] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441829 [ 115.529978][T11024] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 115.537961][T11024] RBP: 00000000004a2b10 R08: 0000000120080522 R09: 0000000120080522 [ 115.545948][T11024] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402640 [ 115.553942][T11024] R13: 00000000004026d0 R14: 0000000000000000 R15: 0000000000000000 [ 115.561926][T11024] [ 115.564236][T11024] Uninit was created at: [ 115.568467][T11024] kmsan_save_stack_with_flags+0x3c/0x90 [ 115.574106][T11024] kmsan_alloc_page+0x12a/0x310 [ 115.578950][T11024] __alloc_pages_nodemask+0x5712/0x5e80 [ 115.585361][T11024] alloc_pages_current+0x67d/0x990 [ 115.590471][T11024] alloc_slab_page+0x111/0x12f0 [ 115.595365][T11024] new_slab+0x2bc/0x1130 [ 115.599607][T11024] ___slab_alloc+0x1533/0x1f30 [ 115.604481][T11024] __kmalloc+0x375/0x450 [ 115.608706][T11024] kzalloc+0x4e/0xa0 [ 115.612676][T11024] __register_sysctl_table+0x16c/0x2950 [ 115.618221][T11024] register_net_sysctl+0x9f/0xb0 [ 115.623325][T11024] mpls_dev_sysctl_register+0x35b/0x600 [ 115.628903][T11024] mpls_dev_notify+0x3c5/0x1c50 [ 115.633760][T11024] raw_notifier_call_chain+0x12a/0x240 [ 115.639206][T11024] register_netdevice+0x2bc4/0x31b0 [ 115.644404][T11024] register_netdev+0x93/0xd0 [ 115.649013][T11024] ip6gre_init_net+0x43d/0x740 [ 115.653776][T11024] ops_init+0x2d3/0x730 [ 115.658045][T11024] setup_net+0x286/0x12b0 [ 115.662388][T11024] copy_net_ns+0x551/0xa70 [ 115.666816][T11024] create_new_namespaces+0x9a8/0x11e0 [ 115.672210][T11024] unshare_nsproxy_namespaces+0x25e/0x340 [ 115.678024][T11024] ksys_unshare+0x8d5/0x1120 [ 115.682617][T11024] __se_sys_unshare+0x41/0x60 [ 115.687305][T11024] __x64_sys_unshare+0x32/0x50 [ 115.692162][T11024] do_syscall_64+0xb8/0x160 [ 115.696680][T11024] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 115.702566][T11024] ===================================================== [ 115.709508][T11024] Disabling lock debugging due to kernel taint [ 115.715782][T11024] Kernel panic - not syncing: panic_on_warn set ... [ 115.722622][T11024] CPU: 0 PID: 11024 Comm: syz-executor435 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 115.732783][T11024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 115.742842][T11024] Call Trace: [ 115.746188][T11024] dump_stack+0x1c9/0x220 [ 115.750542][T11024] panic+0x3d5/0xc3e [ 115.754475][T11024] kmsan_report+0x1df/0x1e0 [ 115.758971][T11024] __msan_warning+0x58/0xa0 [ 115.763467][T11024] tcf_exts_change+0xc9/0xf0 [ 115.768047][T11024] tcindex_change+0x2fe4/0x4130 [ 115.772903][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.778099][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.783285][T11024] ? tcindex_get+0x520/0x520 [ 115.787859][T11024] tc_new_tfilter+0x31a8/0x4f40 [ 115.792774][T11024] ? security_capable+0x1cb/0x220 [ 115.797804][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.803056][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.808888][T11024] ? tcf_tunnel_encap_put_tunnel+0x40/0x40 [ 115.814711][T11024] rtnetlink_rcv_msg+0xcb7/0x1570 [ 115.819730][T11024] ? do_syscall_64+0xb8/0x160 [ 115.824397][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.830191][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.836279][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.841475][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.846589][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.852403][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.858470][T11024] ? rhashtable_jhash2+0x3ac/0x4d0 [ 115.863583][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.868775][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.873886][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.879255][T11024] ? kmsan_get_metadata+0x4f/0x180 [ 115.884375][T11024] ? kmsan_set_origin_checked+0x95/0xf0 [ 115.889933][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.895131][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.900926][T11024] netlink_rcv_skb+0x451/0x650 [ 115.905706][T11024] ? rtnetlink_bind+0x120/0x120 [ 115.910663][T11024] rtnetlink_rcv+0x50/0x60 [ 115.915086][T11024] netlink_unicast+0xf9e/0x1100 [ 115.919942][T11024] ? rtnetlink_net_exit+0x90/0x90 [ 115.925041][T11024] netlink_sendmsg+0x1246/0x14d0 [ 115.930035][T11024] ? netlink_getsockopt+0x1440/0x1440 [ 115.935412][T11024] ____sys_sendmsg+0x12b6/0x1350 [ 115.940383][T11024] __sys_sendmsg+0x451/0x5f0 [ 115.945026][T11024] ? __fpregs_load_activate+0x38c/0x3c0 [ 115.950574][T11024] ? kmsan_get_metadata+0x11d/0x180 [ 115.956041][T11024] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 115.961866][T11024] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 115.968003][T11024] ? prepare_exit_to_usermode+0x1ca/0x520 [ 115.973761][T11024] __se_sys_sendmsg+0x97/0xb0 [ 115.978452][T11024] __x64_sys_sendmsg+0x4a/0x70 [ 115.983215][T11024] do_syscall_64+0xb8/0x160 [ 115.987861][T11024] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 115.993744][T11024] RIP: 0033:0x441829 [ 115.997629][T11024] Code: e8 2c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 8b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 116.017223][T11024] RSP: 002b:00007ffef55cc568 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 116.025637][T11024] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441829 [ 116.033601][T11024] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 116.041736][T11024] RBP: 00000000004a2b10 R08: 0000000120080522 R09: 0000000120080522 [ 116.049705][T11024] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402640 [ 116.057758][T11024] R13: 00000000004026d0 R14: 0000000000000000 R15: 0000000000000000 [ 116.067168][T11024] Kernel Offset: 0x2b400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 116.078963][T11024] Rebooting in 86400 seconds..