[ 27.053139] audit: type=1800 audit(1541037333.685:27): pid=5564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 27.080704] audit: type=1800 audit(1541037333.685:28): pid=5564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 27.738152] audit: type=1800 audit(1541037334.425:29): pid=5564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 27.766690] audit: type=1800 audit(1541037334.425:30): pid=5564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. syzkaller login: [ 35.018135] IPVS: ftp: loaded support on port[0] = 21 [ 35.185057] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.192127] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.199580] device bridge_slave_0 entered promiscuous mode [ 35.218896] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.225336] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.232523] device bridge_slave_1 entered promiscuous mode [ 35.250767] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 35.269053] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 35.321294] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.341434] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.418857] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.426842] team0: Port device team_slave_0 added [ 35.444251] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.451613] team0: Port device team_slave_1 added [ 35.468560] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.491248] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.511262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 35.531012] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 35.680483] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.687020] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.694007] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.700610] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 36.222723] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.276071] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.326827] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 36.333002] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 36.341025] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.389760] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 36.672277] ================================================================== [ 36.679737] BUG: KASAN: slab-out-of-bounds in ip6_tnl_parse_tlv_enc_lim+0x5df/0x660 [ 36.687518] Read of size 1 at addr ffff8801cc32d707 by task syz-executor121/5717 [ 36.695029] [ 36.696645] CPU: 1 PID: 5717 Comm: syz-executor121 Not tainted 4.19.0+ #280 [ 36.703725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.713076] Call Trace: [ 36.715658] dump_stack+0x244/0x39d [ 36.719274] ? dump_stack_print_info.cold.1+0x20/0x20 [ 36.724462] ? printk+0xa7/0xcf [ 36.727728] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 36.732486] print_address_description.cold.7+0x9/0x1ff [ 36.737839] kasan_report.cold.8+0x242/0x309 [ 36.742267] ? ip6_tnl_parse_tlv_enc_lim+0x5df/0x660 [ 36.747360] __asan_report_load1_noabort+0x14/0x20 [ 36.752284] ip6_tnl_parse_tlv_enc_lim+0x5df/0x660 [ 36.757221] ip6_tnl_start_xmit+0x49f/0x25a0 [ 36.761630] ? ip6_tnl_xmit+0x3730/0x3730 [ 36.765769] ? mark_held_locks+0x130/0x130 [ 36.769992] ? zap_class+0x640/0x640 [ 36.773690] ? __lock_acquire+0x62f/0x4c20 [ 36.777929] ? zap_class+0x640/0x640 [ 36.781629] ? zap_class+0x640/0x640 [ 36.785339] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.790866] ? check_preemption_disabled+0x48/0x280 [ 36.795916] ? __lock_is_held+0xb5/0x140 [ 36.800011] dev_hard_start_xmit+0x295/0xc90 [ 36.804433] ? dev_direct_xmit+0x6b0/0x6b0 [ 36.808660] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 36.814208] ? netif_skb_features+0x690/0xb70 [ 36.818698] ? rcu_softirq_qs+0x20/0x20 [ 36.822665] ? validate_xmit_xfrm+0x1ef/0xda0 [ 36.827151] ? validate_xmit_skb+0x80c/0xf30 [ 36.831550] ? netif_skb_features+0xb70/0xb70 [ 36.836037] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.841596] ? check_preemption_disabled+0x48/0x280 [ 36.846600] ? check_preemption_disabled+0x48/0x280 [ 36.851604] __dev_queue_xmit+0x2f71/0x3ad0 [ 36.855916] ? save_stack+0x43/0xd0 [ 36.859529] ? kasan_kmalloc+0xc7/0xe0 [ 36.863417] ? __kmalloc_node_track_caller+0x50/0x70 [ 36.868539] ? netdev_pick_tx+0x310/0x310 [ 36.872719] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.878245] ? check_preemption_disabled+0x48/0x280 [ 36.883252] ? __lock_is_held+0xb5/0x140 [ 36.887305] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.892307] ? skb_release_data+0x1c4/0x880 [ 36.896635] ? kmem_cache_alloc_node_trace+0x34b/0x740 [ 36.901896] ? kasan_unpoison_shadow+0x35/0x50 [ 36.906478] ? skb_tx_error+0x2f0/0x2f0 [ 36.910445] ? __kmalloc_node_track_caller+0x50/0x70 [ 36.915553] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.921085] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 36.926612] ? kasan_check_write+0x14/0x20 [ 36.930835] ? pskb_expand_head+0x6b3/0x10f0 [ 36.935233] ? skb_release_data+0x880/0x880 [ 36.939542] ? __alloc_skb+0x770/0x770 [ 36.943416] ? __lock_is_held+0xb5/0x140 [ 36.947468] ? kasan_check_write+0x14/0x20 [ 36.951688] ? __skb_clone+0x6c7/0xa00 [ 36.955570] ? __copy_skb_header+0x6b0/0x6b0 [ 36.959977] ? kmem_cache_alloc+0x33a/0x730 [ 36.964298] ? depot_save_stack+0x292/0x470 [ 36.968609] ? skb_ensure_writable+0x15e/0x640 [ 36.973180] dev_queue_xmit+0x17/0x20 [ 36.976969] ? dev_queue_xmit+0x17/0x20 [ 36.980968] __bpf_redirect+0x5cf/0xb20 [ 36.984947] bpf_clone_redirect+0x2f6/0x490 [ 36.989265] bpf_prog_759a992c578a3894+0x4d6/0x1000 [ 36.994280] ? bpf_test_run+0x175/0x780 [ 36.998244] ? lock_downgrade+0x900/0x900 [ 37.002378] ? ktime_get+0x332/0x400 [ 37.006087] ? find_held_lock+0x36/0x1c0 [ 37.010139] ? lock_acquire+0x1ed/0x520 [ 37.014101] ? bpf_test_run+0x3cb/0x780 [ 37.018061] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.023616] ? check_preemption_disabled+0x48/0x280 [ 37.028646] ? kasan_check_read+0x11/0x20 [ 37.032782] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 37.038060] ? rcu_softirq_qs+0x20/0x20 [ 37.042026] ? bpf_cgroup_storage_release+0x220/0x220 [ 37.047224] ? skb_try_coalesce+0x1b70/0x1b70 [ 37.051711] ? bpf_test_run+0x25d/0x780 [ 37.055676] ? netlink_diag_dump+0x2a0/0x2a0 [ 37.060072] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.065613] ? bpf_test_init.isra.10+0x70/0x100 [ 37.070270] ? bpf_prog_test_run_skb+0x73b/0xcb0 [ 37.075017] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 37.079844] ? bpf_prog_add+0x69/0xd0 [ 37.083632] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.089154] ? __bpf_prog_get+0x9b/0x290 [ 37.093201] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 37.098031] ? bpf_prog_test_run+0x130/0x1a0 [ 37.102427] ? __x64_sys_bpf+0x3d8/0x520 [ 37.106477] ? bpf_prog_get+0x20/0x20 [ 37.110276] ? do_syscall_64+0x1b9/0x820 [ 37.114326] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.119679] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.124620] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.129453] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.134459] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.139465] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.145003] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.150037] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.154884] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.160237] [ 37.161849] Allocated by task 5717: [ 37.165462] save_stack+0x43/0xd0 [ 37.168898] kasan_kmalloc+0xc7/0xe0 [ 37.172609] __kmalloc_node_track_caller+0x50/0x70 [ 37.177535] __kmalloc_reserve.isra.40+0x41/0xe0 [ 37.182274] pskb_expand_head+0x230/0x10f0 [ 37.186495] skb_ensure_writable+0x3dd/0x640 [ 37.186526] bpf_clone_redirect+0x14a/0x490 [ 37.186538] bpf_prog_759a992c578a3894+0x4d6/0x1000 [ 37.195338] [ 37.195346] Freed by task 4256: [ 37.195361] save_stack+0x43/0xd0 [ 37.195376] __kasan_slab_free+0x102/0x150 [ 37.195387] kasan_slab_free+0xe/0x10 [ 37.195399] kfree+0xcf/0x230 [ 37.195412] load_elf_binary+0x25b4/0x5620 [ 37.195426] search_binary_handler+0x17d/0x570 [ 37.195444] __do_execve_file.isra.33+0x1661/0x25d0 [ 37.233723] __x64_sys_execve+0x8f/0xc0 [ 37.237699] do_syscall_64+0x1b9/0x820 [ 37.241576] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.246749] [ 37.248396] The buggy address belongs to the object at ffff8801cc32d500 [ 37.248396] which belongs to the cache kmalloc-512 of size 512 [ 37.261039] The buggy address is located 7 bytes to the right of [ 37.261039] 512-byte region [ffff8801cc32d500, ffff8801cc32d700) [ 37.273244] The buggy address belongs to the page: [ 37.278160] page:ffffea000730cb40 count:1 mapcount:0 mapping:ffff8801da800940 index:0x0 [ 37.286285] flags: 0x2fffc0000000200(slab) [ 37.290507] raw: 02fffc0000000200 ffffea00073051c8 ffffea000730bbc8 ffff8801da800940 [ 37.298374] raw: 0000000000000000 ffff8801cc32d000 0000000100000006 0000000000000000 [ 37.306233] page dumped because: kasan: bad access detected [ 37.311920] [ 37.313524] Memory state around the buggy address: [ 37.318437] ffff8801cc32d600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 37.325780] ffff8801cc32d680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 37.333134] >ffff8801cc32d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.340485] ^ [ 37.343847] ffff8801cc32d780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.351189] ffff8801cc32d800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.358529] ================================================================== [ 37.365882] Disabling lock debugging due to kernel taint [ 37.371370] Kernel panic - not syncing: panic_on_warn set ... [ 37.371370] [ 37.378751] CPU: 1 PID: 5717 Comm: syz-executor121 Tainted: G B 4.19.0+ #280 [ 37.387218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.396585] Call Trace: [ 37.399156] dump_stack+0x244/0x39d [ 37.402767] ? dump_stack_print_info.cold.1+0x20/0x20 [ 37.407955] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 37.412712] panic+0x238/0x4e7 [ 37.416608] ? add_taint.cold.5+0x16/0x16 [ 37.420754] ? trace_hardirqs_on+0xb4/0x310 [ 37.425066] kasan_end_report+0x47/0x4f [ 37.429039] kasan_report.cold.8+0x76/0x309 [ 37.433373] ? ip6_tnl_parse_tlv_enc_lim+0x5df/0x660 [ 37.438465] __asan_report_load1_noabort+0x14/0x20 [ 37.443492] ip6_tnl_parse_tlv_enc_lim+0x5df/0x660 [ 37.448411] ip6_tnl_start_xmit+0x49f/0x25a0 [ 37.452808] ? ip6_tnl_xmit+0x3730/0x3730 [ 37.456956] ? mark_held_locks+0x130/0x130 [ 37.461267] ? zap_class+0x640/0x640 [ 37.464966] ? __lock_acquire+0x62f/0x4c20 [ 37.469188] ? zap_class+0x640/0x640 [ 37.472886] ? zap_class+0x640/0x640 [ 37.476601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.482129] ? check_preemption_disabled+0x48/0x280 [ 37.487131] ? __lock_is_held+0xb5/0x140 [ 37.491212] dev_hard_start_xmit+0x295/0xc90 [ 37.495608] ? dev_direct_xmit+0x6b0/0x6b0 [ 37.499827] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 37.505350] ? netif_skb_features+0x690/0xb70 [ 37.509830] ? rcu_softirq_qs+0x20/0x20 [ 37.513792] ? validate_xmit_xfrm+0x1ef/0xda0 [ 37.518273] ? validate_xmit_skb+0x80c/0xf30 [ 37.522712] ? netif_skb_features+0xb70/0xb70 [ 37.527195] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.532732] ? check_preemption_disabled+0x48/0x280 [ 37.537730] ? check_preemption_disabled+0x48/0x280 [ 37.542731] __dev_queue_xmit+0x2f71/0x3ad0 [ 37.547079] ? save_stack+0x43/0xd0 [ 37.550693] ? kasan_kmalloc+0xc7/0xe0 [ 37.554590] ? __kmalloc_node_track_caller+0x50/0x70 [ 37.559693] ? netdev_pick_tx+0x310/0x310 [ 37.563828] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.569350] ? check_preemption_disabled+0x48/0x280 [ 37.574354] ? __lock_is_held+0xb5/0x140 [ 37.578402] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 37.583399] ? skb_release_data+0x1c4/0x880 [ 37.587705] ? kmem_cache_alloc_node_trace+0x34b/0x740 [ 37.592979] ? kasan_unpoison_shadow+0x35/0x50 [ 37.597551] ? skb_tx_error+0x2f0/0x2f0 [ 37.601522] ? __kmalloc_node_track_caller+0x50/0x70 [ 37.606607] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.612130] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 37.617653] ? kasan_check_write+0x14/0x20 [ 37.621877] ? pskb_expand_head+0x6b3/0x10f0 [ 37.626282] ? skb_release_data+0x880/0x880 [ 37.630589] ? __alloc_skb+0x770/0x770 [ 37.634463] ? __lock_is_held+0xb5/0x140 [ 37.638511] ? kasan_check_write+0x14/0x20 [ 37.642726] ? __skb_clone+0x6c7/0xa00 [ 37.646599] ? __copy_skb_header+0x6b0/0x6b0 [ 37.650996] ? kmem_cache_alloc+0x33a/0x730 [ 37.655304] ? depot_save_stack+0x292/0x470 [ 37.659621] ? skb_ensure_writable+0x15e/0x640 [ 37.664232] dev_queue_xmit+0x17/0x20 [ 37.668016] ? dev_queue_xmit+0x17/0x20 [ 37.671975] __bpf_redirect+0x5cf/0xb20 [ 37.675935] bpf_clone_redirect+0x2f6/0x490 [ 37.680250] bpf_prog_759a992c578a3894+0x4d6/0x1000 [ 37.685250] ? bpf_test_run+0x175/0x780 [ 37.689210] ? lock_downgrade+0x900/0x900 [ 37.693340] ? ktime_get+0x332/0x400 [ 37.697039] ? find_held_lock+0x36/0x1c0 [ 37.701085] ? lock_acquire+0x1ed/0x520 [ 37.705209] ? bpf_test_run+0x3cb/0x780 [ 37.709359] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.715066] ? check_preemption_disabled+0x48/0x280 [ 37.721157] ? kasan_check_read+0x11/0x20 [ 37.725538] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 37.731743] ? rcu_softirq_qs+0x20/0x20 [ 37.735895] ? bpf_cgroup_storage_release+0x220/0x220 [ 37.741070] ? skb_try_coalesce+0x1b70/0x1b70 [ 37.745555] ? bpf_test_run+0x25d/0x780 [ 37.749517] ? netlink_diag_dump+0x2a0/0x2a0 [ 37.753909] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.759448] ? bpf_test_init.isra.10+0x70/0x100 [ 37.764107] ? bpf_prog_test_run_skb+0x73b/0xcb0 [ 37.768855] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 37.773675] ? bpf_prog_add+0x69/0xd0 [ 37.777475] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.782995] ? __bpf_prog_get+0x9b/0x290 [ 37.787041] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 37.791869] ? bpf_prog_test_run+0x130/0x1a0 [ 37.796266] ? __x64_sys_bpf+0x3d8/0x520 [ 37.800324] ? bpf_prog_get+0x20/0x20 [ 37.804127] ? do_syscall_64+0x1b9/0x820 [ 37.808176] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.813525] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.818452] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.823283] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.828295] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.833308] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.838857] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.843868] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.848703] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.854984] Kernel Offset: disabled [ 37.858608] Rebooting in 86400 seconds..