[ 130.899842][ T32] audit: type=1800 audit(1583739248.943:25): pid=12154 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 130.932484][ T32] audit: type=1800 audit(1583739248.973:26): pid=12154 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 130.972502][ T32] audit: type=1800 audit(1583739249.003:27): pid=12154 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. [ 133.727911][T12292] bash (12292) used greatest stack depth: 3352 bytes left Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts. syzkaller login: [ 142.692560][T12314] IPVS: ftp: loaded support on port[0] = 21 [ 142.693262][T12315] IPVS: ftp: loaded support on port[0] = 21 [ 142.725400][T12307] IPVS: ftp: loaded support on port[0] = 21 [ 142.730644][T12316] IPVS: ftp: loaded support on port[0] = 21 [ 142.750005][T12310] IPVS: ftp: loaded support on port[0] = 21 [ 142.756241][T12313] IPVS: ftp: loaded support on port[0] = 21 executing program [ 143.008736][T12317] ===================================================== [ 143.016164][T12317] BUG: KMSAN: uninit-value in tcf_exts_change+0xc9/0xf0 [ 143.023114][T12317] CPU: 1 PID: 12317 Comm: syz-executor075 Not tainted 5.6.0-rc2-syzkaller #0 [ 143.031871][T12317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 143.041935][T12317] Call Trace: [ 143.045251][T12317] dump_stack+0x1c9/0x220 [ 143.049613][T12317] kmsan_report+0xf7/0x1e0 [ 143.054058][T12317] __msan_warning+0x58/0xa0 [ 143.058589][T12317] tcf_exts_change+0xc9/0xf0 [ 143.063205][T12317] tcindex_change+0x2fe4/0x4130 [ 143.068123][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.073381][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.078685][T12317] ? tcindex_get+0x520/0x520 [ 143.083290][T12317] tc_new_tfilter+0x31a8/0x4f40 [ 143.088235][T12317] ? security_capable+0x1cb/0x220 [ 143.093274][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.098522][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.104336][T12317] ? tcf_tunnel_encap_put_tunnel+0x40/0x40 [ 143.110158][T12317] rtnetlink_rcv_msg+0xcb7/0x1570 [ 143.115212][T12317] ? do_syscall_64+0xb8/0x160 [ 143.119915][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.125735][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.131820][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.137041][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.142179][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.148004][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.154106][T12317] ? rhashtable_jhash2+0x3ac/0x4d0 [ 143.159235][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.164446][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.169568][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.174694][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.179830][T12317] ? kmsan_set_origin_checked+0x95/0xf0 [ 143.185507][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.190740][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.196568][T12317] netlink_rcv_skb+0x451/0x650 [ 143.201356][T12317] ? rtnetlink_bind+0x120/0x120 [ 143.206247][T12317] rtnetlink_rcv+0x50/0x60 [ 143.210680][T12317] netlink_unicast+0xf9e/0x1100 [ 143.215561][T12317] ? rtnetlink_net_exit+0x90/0x90 [ 143.220619][T12317] netlink_sendmsg+0x1246/0x14d0 [ 143.225611][T12317] ? netlink_getsockopt+0x1440/0x1440 [ 143.231005][T12317] ____sys_sendmsg+0x12b6/0x1350 [ 143.236006][T12317] __sys_sendmsg+0x451/0x5f0 [ 143.240656][T12317] ? __fpregs_load_activate+0x38c/0x3c0 [ 143.246222][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.251441][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.257264][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.263343][T12317] ? prepare_exit_to_usermode+0x1ca/0x520 [ 143.269096][T12317] __se_sys_sendmsg+0x97/0xb0 [ 143.273804][T12317] __x64_sys_sendmsg+0x4a/0x70 [ 143.278644][T12317] do_syscall_64+0xb8/0x160 [ 143.283176][T12317] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 143.289099][T12317] RIP: 0033:0x441829 [ 143.293009][T12317] 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 [ 143.312732][T12317] RSP: 002b:00007fffe883a598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 143.321164][T12317] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441829 [ 143.329164][T12317] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 143.337143][T12317] RBP: 00000000004a2b10 R08: 0000000120080522 R09: 0000000120080522 [ 143.345124][T12317] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402640 [ 143.353106][T12317] R13: 00000000004026d0 R14: 0000000000000000 R15: 0000000000000000 [ 143.361115][T12317] [ 143.363447][T12317] Uninit was created at: [ 143.367805][T12317] kmsan_save_stack_with_flags+0x3c/0x90 [ 143.373448][T12317] kmsan_alloc_page+0x12a/0x310 [ 143.378323][T12317] __alloc_pages_nodemask+0x5712/0x5e80 [ 143.383876][T12317] alloc_pages_current+0x67d/0x990 [ 143.388992][T12317] alloc_slab_page+0x111/0x12f0 [ 143.393859][T12317] new_slab+0x2bc/0x1130 [ 143.398108][T12317] ___slab_alloc+0x1533/0x1f30 [ 143.402875][T12317] kmem_cache_alloc_trace+0xb0a/0xd70 [ 143.408809][T12317] tipc_crypto_start+0x123/0x600 [ 143.413753][T12317] tipc_init_net+0x271/0x640 [ 143.418350][T12317] ops_init+0x2d3/0x730 [ 143.422521][T12317] setup_net+0x286/0x12b0 [ 143.426860][T12317] copy_net_ns+0x551/0xa70 [ 143.431308][T12317] create_new_namespaces+0x9a8/0x11e0 [ 143.436687][T12317] unshare_nsproxy_namespaces+0x25e/0x340 [ 143.442412][T12317] ksys_unshare+0x8d5/0x1120 [ 143.447008][T12317] __se_sys_unshare+0x41/0x60 [ 143.451690][T12317] __x64_sys_unshare+0x32/0x50 [ 143.456462][T12317] do_syscall_64+0xb8/0x160 [ 143.460971][T12317] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 143.466856][T12317] ===================================================== [ 143.473787][T12317] Disabling lock debugging due to kernel taint [ 143.479938][T12317] Kernel panic - not syncing: panic_on_warn set ... [ 143.486537][T12317] CPU: 1 PID: 12317 Comm: syz-executor075 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 143.499638][T12317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 143.509784][T12317] Call Trace: [ 143.513094][T12317] dump_stack+0x1c9/0x220 [ 143.517450][T12317] panic+0x3d5/0xc3e [ 143.521425][T12317] kmsan_report+0x1df/0x1e0 [ 143.525959][T12317] __msan_warning+0x58/0xa0 [ 143.530490][T12317] tcf_exts_change+0xc9/0xf0 [ 143.535109][T12317] tcindex_change+0x2fe4/0x4130 [ 143.540036][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.545286][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.550503][T12317] ? tcindex_get+0x520/0x520 [ 143.555103][T12317] tc_new_tfilter+0x31a8/0x4f40 [ 143.560060][T12317] ? security_capable+0x1cb/0x220 [ 143.565108][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.570357][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.576175][T12317] ? tcf_tunnel_encap_put_tunnel+0x40/0x40 [ 143.582020][T12317] rtnetlink_rcv_msg+0xcb7/0x1570 [ 143.587084][T12317] ? do_syscall_64+0xb8/0x160 [ 143.591793][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.597615][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.603704][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.608922][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.614056][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.619878][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.625958][T12317] ? rhashtable_jhash2+0x3ac/0x4d0 [ 143.631107][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.636325][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.641467][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.646592][T12317] ? kmsan_get_metadata+0x4f/0x180 [ 143.651722][T12317] ? kmsan_set_origin_checked+0x95/0xf0 [ 143.657296][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.662510][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.668334][T12317] netlink_rcv_skb+0x451/0x650 [ 143.673115][T12317] ? rtnetlink_bind+0x120/0x120 [ 143.678014][T12317] rtnetlink_rcv+0x50/0x60 [ 143.682452][T12317] netlink_unicast+0xf9e/0x1100 [ 143.687330][T12317] ? rtnetlink_net_exit+0x90/0x90 [ 143.692386][T12317] netlink_sendmsg+0x1246/0x14d0 [ 143.697386][T12317] ? netlink_getsockopt+0x1440/0x1440 [ 143.702767][T12317] ____sys_sendmsg+0x12b6/0x1350 [ 143.707767][T12317] __sys_sendmsg+0x451/0x5f0 [ 143.712415][T12317] ? __fpregs_load_activate+0x38c/0x3c0 [ 143.717972][T12317] ? kmsan_get_metadata+0x11d/0x180 [ 143.723202][T12317] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 143.729027][T12317] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 143.735108][T12317] ? prepare_exit_to_usermode+0x1ca/0x520 [ 143.740864][T12317] __se_sys_sendmsg+0x97/0xb0 [ 143.745569][T12317] __x64_sys_sendmsg+0x4a/0x70 [ 143.750360][T12317] do_syscall_64+0xb8/0x160 [ 143.754890][T12317] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 143.760796][T12317] RIP: 0033:0x441829 [ 143.764703][T12317] 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 [ 143.784347][T12317] RSP: 002b:00007fffe883a598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 143.792853][T12317] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441829 [ 143.800849][T12317] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 143.808839][T12317] RBP: 00000000004a2b10 R08: 0000000120080522 R09: 0000000120080522 [ 143.816843][T12317] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402640 [ 143.824841][T12317] R13: 00000000004026d0 R14: 0000000000000000 R15: 0000000000000000 [ 143.833957][T12317] Kernel Offset: 0xd400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 143.848002][T12317] Rebooting in 86400 seconds..