[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.810685][ T27] audit: type=1800 audit(1578334474.438:25): pid=9461 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.845782][ T27] audit: type=1800 audit(1578334474.438:26): pid=9461 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.916242][ T27] audit: type=1800 audit(1578334474.448:27): pid=9461 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 '10.128.1.45' (ECDSA) to the list of known hosts. syzkaller login: [ 93.054975][ T9616] IPVS: ftp: loaded support on port[0] = 21 [ 93.115325][ T9616] chnl_net:caif_netlink_parms(): no params data found [ 93.149116][ T9616] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.156881][ T9616] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.164603][ T9616] device bridge_slave_0 entered promiscuous mode [ 93.173607][ T9616] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.180825][ T9616] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.189093][ T9616] device bridge_slave_1 entered promiscuous mode [ 93.206898][ T9616] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.217679][ T9616] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.237144][ T9616] team0: Port device team_slave_0 added [ 93.244420][ T9616] team0: Port device team_slave_1 added [ 93.318317][ T9616] device hsr_slave_0 entered promiscuous mode [ 93.376111][ T9616] device hsr_slave_1 entered promiscuous mode [ 93.497202][ T9616] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.549166][ T9616] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.597839][ T9616] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.648626][ T9616] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.697127][ T9616] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.704389][ T9616] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.712334][ T9616] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.719535][ T9616] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.759552][ T9616] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.772662][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.782708][ T2728] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.791621][ T2728] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.800477][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 93.814000][ T9616] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.825340][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.833902][ T2765] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.841093][ T2765] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.852586][ T2728] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.861849][ T2728] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.868985][ T2728] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.887718][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 93.897262][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 93.909563][ T2720] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 93.924853][ T9616] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 93.936730][ T9616] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 93.948803][ T2720] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 93.958013][ T2720] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 93.966642][ T2720] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.984229][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 93.991848][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 94.004253][ T9616] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.023600][ T2720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 94.042983][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 94.051312][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 94.060279][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready executing program [ 94.070944][ T9616] device veth0_vlan entered promiscuous mode [ 94.083481][ T9616] device veth1_vlan entered promiscuous mode [ 94.106364][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 94.114354][ T2765] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 94.196115][ T9616] ================================================================== [ 94.204509][ T9616] BUG: KASAN: slab-out-of-bounds in macvlan_broadcast+0x547/0x620 [ 94.212310][ T9616] Read of size 4 at addr ffff8880a7182c01 by task syz-executor054/9616 [ 94.220528][ T9616] [ 94.222845][ T9616] CPU: 1 PID: 9616 Comm: syz-executor054 Not tainted 5.5.0-rc4-syzkaller #0 [ 94.231495][ T9616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.241539][ T9616] Call Trace: [ 94.244814][ T9616] dump_stack+0x197/0x210 [ 94.249128][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.254237][ T9616] print_address_description.constprop.0.cold+0xd4/0x30b [ 94.261312][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.266425][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.271531][ T9616] __kasan_report.cold+0x1b/0x41 [ 94.276460][ T9616] ? validate_xmit_xfrm+0x3e0/0xf10 [ 94.281641][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.286737][ T9616] kasan_report+0x12/0x20 [ 94.291060][ T9616] __asan_report_load_n_noabort+0xf/0x20 [ 94.296692][ T9616] macvlan_broadcast+0x547/0x620 [ 94.301632][ T9616] ? validate_xmit_skb+0x81f/0xe50 [ 94.306739][ T9616] macvlan_start_xmit+0x402/0x77f [ 94.311756][ T9616] dev_direct_xmit+0x419/0x630 [ 94.316497][ T9616] ? __check_heap_object+0x61/0xb3 [ 94.321592][ T9616] ? validate_xmit_skb_list+0x150/0x150 [ 94.327116][ T9616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.333332][ T9616] ? netdev_pick_tx+0x14e/0xb00 [ 94.338165][ T9616] packet_direct_xmit+0x1a9/0x250 [ 94.343169][ T9616] packet_sendmsg+0x260d/0x6220 [ 94.348001][ T9616] ? ___might_sleep+0x163/0x2c0 [ 94.352832][ T9616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.359487][ T9616] ? aa_label_sk_perm+0x91/0xf0 [ 94.364339][ T9616] ? packet_notifier+0x880/0x880 [ 94.369259][ T9616] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 94.374796][ T9616] ? apparmor_socket_sendmsg+0x2a/0x30 [ 94.380236][ T9616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.386461][ T9616] ? security_socket_sendmsg+0x8d/0xc0 [ 94.391896][ T9616] ? packet_notifier+0x880/0x880 [ 94.396825][ T9616] sock_sendmsg+0xd7/0x130 [ 94.401409][ T9616] __sys_sendto+0x262/0x380 [ 94.405897][ T9616] ? __ia32_sys_getpeername+0xb0/0xb0 [ 94.411254][ T9616] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 94.417387][ T9616] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 94.422910][ T9616] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 94.428880][ T9616] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 94.434328][ T9616] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 94.439856][ T9616] ? do_syscall_64+0x26/0x790 [ 94.444514][ T9616] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.450585][ T9616] __x64_sys_sendto+0xe1/0x1a0 [ 94.455503][ T9616] do_syscall_64+0xfa/0x790 [ 94.460011][ T9616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.465901][ T9616] RIP: 0033:0x4425b9 [ 94.469779][ T9616] 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 5b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 94.489380][ T9616] RSP: 002b:00007fff50f0f9c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 94.497944][ T9616] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004425b9 [ 94.505946][ T9616] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000003 [ 94.514024][ T9616] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 94.522074][ T9616] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 94.530156][ T9616] R13: 0000000000403b30 R14: 0000000000000000 R15: 0000000000000000 [ 94.538178][ T9616] [ 94.540492][ T9616] Allocated by task 9587: [ 94.544824][ T9616] save_stack+0x23/0x90 [ 94.548988][ T9616] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 94.554617][ T9616] kasan_kmalloc+0x9/0x10 [ 94.558928][ T9616] kmem_cache_alloc_trace+0x158/0x790 [ 94.564281][ T9616] tomoyo_init_log+0xd0c/0x2070 [ 94.569132][ T9616] tomoyo_supervisor+0x33f/0xef0 [ 94.574061][ T9616] tomoyo_env_perm+0x18e/0x210 [ 94.578816][ T9616] tomoyo_find_next_domain+0x1354/0x1f6c [ 94.584439][ T9616] tomoyo_bprm_check_security+0x124/0x1a0 [ 94.590833][ T9616] security_bprm_check+0x63/0xb0 [ 94.595767][ T9616] search_binary_handler+0x71/0x570 [ 94.600977][ T9616] __do_execve_file.isra.0+0x1329/0x22b0 [ 94.606607][ T9616] __x64_sys_execve+0x8f/0xc0 [ 94.611276][ T9616] do_syscall_64+0xfa/0x790 [ 94.615763][ T9616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.621641][ T9616] [ 94.623953][ T9616] Freed by task 9587: [ 94.627917][ T9616] save_stack+0x23/0x90 [ 94.632051][ T9616] __kasan_slab_free+0x102/0x150 [ 94.636966][ T9616] kasan_slab_free+0xe/0x10 [ 94.641444][ T9616] kfree+0x10a/0x2c0 [ 94.645663][ T9616] tomoyo_init_log+0x15b5/0x2070 [ 94.650587][ T9616] tomoyo_supervisor+0x33f/0xef0 [ 94.655500][ T9616] tomoyo_env_perm+0x18e/0x210 [ 94.660247][ T9616] tomoyo_find_next_domain+0x1354/0x1f6c [ 94.665856][ T9616] tomoyo_bprm_check_security+0x124/0x1a0 [ 94.671552][ T9616] security_bprm_check+0x63/0xb0 [ 94.676466][ T9616] search_binary_handler+0x71/0x570 [ 94.681640][ T9616] __do_execve_file.isra.0+0x1329/0x22b0 [ 94.687264][ T9616] __x64_sys_execve+0x8f/0xc0 [ 94.691986][ T9616] do_syscall_64+0xfa/0x790 [ 94.696474][ T9616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.702390][ T9616] [ 94.704705][ T9616] The buggy address belongs to the object at ffff8880a7180000 [ 94.704705][ T9616] which belongs to the cache kmalloc-8k of size 8192 [ 94.718741][ T9616] The buggy address is located 3073 bytes to the right of [ 94.718741][ T9616] 8192-byte region [ffff8880a7180000, ffff8880a7182000) [ 94.732778][ T9616] The buggy address belongs to the page: [ 94.738393][ T9616] page:ffffea00029c6000 refcount:1 mapcount:0 mapping:ffff8880aa4021c0 index:0x0 compound_mapcount: 0 [ 94.749308][ T9616] raw: 00fffe0000010200 ffffea0002772d08 ffffea0002a0af08 ffff8880aa4021c0 [ 94.757878][ T9616] raw: 0000000000000000 ffff8880a7180000 0000000100000001 0000000000000000 [ 94.766436][ T9616] page dumped because: kasan: bad access detected [ 94.772822][ T9616] [ 94.775127][ T9616] Memory state around the buggy address: [ 94.780755][ T9616] ffff8880a7182b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 94.788797][ T9616] ffff8880a7182b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 94.796853][ T9616] >ffff8880a7182c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 94.804905][ T9616] ^ [ 94.808951][ T9616] ffff8880a7182c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 94.817005][ T9616] ffff8880a7182d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 94.825057][ T9616] ================================================================== [ 94.833110][ T9616] Disabling lock debugging due to kernel taint [ 94.839315][ T9616] Kernel panic - not syncing: panic_on_warn set ... [ 94.845911][ T9616] CPU: 1 PID: 9616 Comm: syz-executor054 Tainted: G B 5.5.0-rc4-syzkaller #0 [ 94.855963][ T9616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.866212][ T9616] Call Trace: [ 94.869493][ T9616] dump_stack+0x197/0x210 [ 94.873807][ T9616] panic+0x2e3/0x75c [ 94.877681][ T9616] ? add_taint.cold+0x16/0x16 [ 94.882338][ T9616] ? trace_hardirqs_on+0x5e/0x240 [ 94.887340][ T9616] ? trace_hardirqs_on+0x5e/0x240 [ 94.892348][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.897448][ T9616] end_report+0x47/0x4f [ 94.901581][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.906682][ T9616] __kasan_report.cold+0xe/0x41 [ 94.911511][ T9616] ? validate_xmit_xfrm+0x3e0/0xf10 [ 94.916700][ T9616] ? macvlan_broadcast+0x547/0x620 [ 94.921788][ T9616] kasan_report+0x12/0x20 [ 94.926291][ T9616] __asan_report_load_n_noabort+0xf/0x20 [ 94.931911][ T9616] macvlan_broadcast+0x547/0x620 [ 94.936829][ T9616] ? validate_xmit_skb+0x81f/0xe50 [ 94.941929][ T9616] macvlan_start_xmit+0x402/0x77f [ 94.947017][ T9616] dev_direct_xmit+0x419/0x630 [ 94.951771][ T9616] ? __check_heap_object+0x61/0xb3 [ 94.956860][ T9616] ? validate_xmit_skb_list+0x150/0x150 [ 94.962384][ T9616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.968603][ T9616] ? netdev_pick_tx+0x14e/0xb00 [ 94.973442][ T9616] packet_direct_xmit+0x1a9/0x250 [ 94.978459][ T9616] packet_sendmsg+0x260d/0x6220 [ 94.983312][ T9616] ? ___might_sleep+0x163/0x2c0 [ 94.988141][ T9616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.994366][ T9616] ? aa_label_sk_perm+0x91/0xf0 [ 94.999219][ T9616] ? packet_notifier+0x880/0x880 [ 95.004132][ T9616] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 95.010107][ T9616] ? apparmor_socket_sendmsg+0x2a/0x30 [ 95.015551][ T9616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.021769][ T9616] ? security_socket_sendmsg+0x8d/0xc0 [ 95.027218][ T9616] ? packet_notifier+0x880/0x880 [ 95.032136][ T9616] sock_sendmsg+0xd7/0x130 [ 95.036578][ T9616] __sys_sendto+0x262/0x380 [ 95.041074][ T9616] ? __ia32_sys_getpeername+0xb0/0xb0 [ 95.046600][ T9616] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 95.052881][ T9616] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 95.058409][ T9616] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 95.064389][ T9616] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.069834][ T9616] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.075273][ T9616] ? do_syscall_64+0x26/0x790 [ 95.079935][ T9616] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.086001][ T9616] __x64_sys_sendto+0xe1/0x1a0 [ 95.091187][ T9616] do_syscall_64+0xfa/0x790 [ 95.095695][ T9616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.101577][ T9616] RIP: 0033:0x4425b9 [ 95.105477][ T9616] 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 5b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 95.125059][ T9616] RSP: 002b:00007fff50f0f9c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 95.133454][ T9616] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004425b9 [ 95.141605][ T9616] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000003 [ 95.149564][ T9616] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 95.157520][ T9616] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 95.165643][ T9616] R13: 0000000000403b30 R14: 0000000000000000 R15: 0000000000000000 [ 95.175175][ T9616] Kernel Offset: disabled [ 95.179510][ T9616] Rebooting in 86400 seconds..