INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.31' (ECDSA) to the list of known hosts. syzkaller login: [ 29.045482] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.071474] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.106270] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.147943] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.212839] IPVS: ftp: loaded support on port[0] = 21 [ 29.280183] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 net.ipv6.conf.syz_tun.accept_dad = 0 [ 29.351181] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.462810] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: File exists net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported [ 30.279853] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 30.332830] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 30.434585] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 30.561367] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 30.713807] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available [ 30.782596] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 30.844586] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 30.914139] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported 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 RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 32.584776] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 32.590931] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.599193] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 32.605281] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.660945] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 32.667118] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.680910] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 32.687038] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.831109] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.851553] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.919095] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.926886] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.037828] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.043970] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.052807] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.058934] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.070377] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.078176] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.089663] protocol 0000 is buggy, dev ip6tnl0 [ 33.090913] protocol 0000 is buggy, dev ip6tnl0 [ 33.094522] ================================================================== [ 33.103035] protocol 0000 is buggy, dev ip6tnl0 [ 33.106458] BUG: KASAN: use-after-free in skb_release_data+0x16a/0x790 [ 33.106466] Write of size 4 at addr ffff8801b200e8a0 by task syzkaller241622/4477 [ 33.106471] [ 33.115601] protocol 0000 is buggy, dev ip6tnl0 [ 33.117760] CPU: 1 PID: 4477 Comm: syzkaller241622 Not tainted 4.16.0+ #11 [ 33.117766] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.117769] Call Trace: [ 33.117783] dump_stack+0x1a7/0x27d [ 33.117795] ? arch_local_irq_restore+0x53/0x53 [ 33.133386] protocol 0000 is buggy, dev ip6tnl0 [ 33.138635] ? show_regs_print_info+0x18/0x18 [ 33.138649] ? kasan_check_write+0x14/0x20 [ 33.138661] ? skb_release_data+0x16a/0x790 [ 33.149723] protocol 0000 is buggy, dev ip6tnl0 [ 33.150593] print_address_description+0x73/0x250 [ 33.150604] ? skb_release_data+0x16a/0x790 [ 33.150612] kasan_report+0x23c/0x360 [ 33.154621] protocol 0000 is buggy, dev ip6tnl0 [ 33.158866] check_memory_region+0x137/0x190 [ 33.158875] kasan_check_write+0x14/0x20 [ 33.158883] skb_release_data+0x16a/0x790 [ 33.158893] ? refcount_inc_not_zero+0x280/0x280 [ 33.158901] ? kfree_skbmem+0xe2/0x1e0 [ 33.158909] ? skb_tx_error+0x2c0/0x2c0 [ 33.164484] protocol 0000 is buggy, dev ip6tnl0 [ 33.168029] ? sock_wfree+0xbc/0x140 [ 33.168037] ? sk_common_release+0x2f0/0x2f0 [ 33.168047] skb_release_all+0x4a/0x60 [ 33.172658] protocol 0000 is buggy, dev ip6tnl0 [ 33.176553] kfree_skb+0x16b/0x4c0 [ 33.176562] ? ip6_tnl_start_xmit+0x184/0x2070 [ 33.176570] ? __kfree_skb+0x20/0x20 [ 33.176580] ? packet_sendmsg+0x6020/0x6020 [ 33.176591] ? ___ratelimit+0x30d/0x630 [ 33.183685] protocol 0000 is buggy, dev ip6tnl0 [ 33.187087] ip6_tnl_start_xmit+0x184/0x2070 [ 33.187101] ? ip6_tnl_xmit+0x31c0/0x31c0 [ 33.279320] ? lock_downgrade+0x980/0x980 [ 33.283463] ? vprintk_func+0x5e/0xc0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.287260] ? kasan_check_read+0x11/0x20 [ 33.291399] ? rcu_is_watching+0x85/0x130 [ 33.295540] ? rcu_report_exp_cpu_mult+0x480/0x480 [ 33.300464] ? dev_queue_xmit_nit+0x9b0/0xc40 [ 33.304949] ? trace_hardirqs_off+0x10/0x10 [ 33.309263] ? dev_queue_xmit_nit+0x8af/0xc40 [ 33.313758] ? __lock_is_held+0xb6/0x140 [ 33.317263] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.317813] dev_hard_start_xmit+0x24e/0xac0 [ 33.323885] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.328223] ? SYSC_sendto+0x361/0x5c0 executing program executing program executing program executing program executing program [ 33.328236] ? validate_xmit_skb_list+0x120/0x120 [ 33.328248] ? netif_skb_features+0x5ff/0x9b0 [ 33.328257] ? __skb_gso_segment+0x840/0x840 [ 33.328268] ? validate_xmit_xfrm+0xb8/0xda0 [ 33.356046] ? lock_acquire+0x1d5/0x580 [ 33.360009] ? __dev_queue_xmit+0x2fe/0x2fd0 [ 33.364414] ? validate_xmit_skb+0x512/0xb40 [ 33.368815] ? netif_skb_features+0x9b0/0x9b0 [ 33.373305] __dev_queue_xmit+0x26cf/0x2fd0 [ 33.377626] ? netdev_pick_tx+0x2c0/0x2c0 [ 33.381766] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 33.386950] ? lock_pin_lock+0x360/0x360 [ 33.391011] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 33.396191] ? kasan_check_read+0x11/0x20 [ 33.400327] ? refcount_add_not_zero+0x1c0/0x2b0 [ 33.405074] ? refcount_dec_if_one+0x170/0x170 [ 33.409646] ? alloc_skb_with_frags+0x468/0x750 [ 33.414304] ? check_same_owner+0x320/0x320 [ 33.418623] ? refcount_add+0x24/0x60 [ 33.422414] ? skb_set_owner_w+0x232/0x330 [ 33.426644] ? sock_alloc_send_pskb+0x6e6/0x9e0 [ 33.431313] ? print_irqtrace_events+0x270/0x270 [ 33.436067] ? sock_wmalloc+0x1e0/0x1e0 [ 33.440039] ? dev_get_by_index+0xbf/0x170 [ 33.444269] ? lock_downgrade+0x980/0x980 [ 33.448413] ? cap_capable+0x1b5/0x230 [ 33.452298] ? security_capable+0x8e/0xc0 [ 33.456442] dev_queue_xmit+0x17/0x20 [ 33.460230] ? dev_queue_xmit+0x17/0x20 [ 33.464195] packet_sendmsg+0x3ad9/0x6020 [ 33.468337] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 33.473524] ? __lock_acquire+0x638/0x3c30 [ 33.477753] ? trace_hardirqs_off+0x10/0x10 [ 33.482061] ? kernel_text_address+0xd1/0xe0 [ 33.486457] ? __unwind_start+0x169/0x330 [ 33.490607] ? packet_cached_dev_get+0x2b0/0x2b0 [ 33.495352] ? trace_hardirqs_off+0x10/0x10 [ 33.499673] ? expand_files+0x50a/0x910 [ 33.503638] ? get_empty_filp+0xfb/0x510 [ 33.507687] ? alloc_file+0x26/0x390 [ 33.511393] ? sock_alloc_file+0x1f3/0x560 [ 33.515619] ? trace_hardirqs_off+0x10/0x10 [ 33.519927] ? find_held_lock+0x35/0x1d0 [ 33.523982] ? __fd_install+0x25f/0x740 [ 33.527949] ? lock_downgrade+0x980/0x980 [ 33.532086] ? find_held_lock+0x35/0x1d0 [ 33.536141] ? __might_fault+0x110/0x1d0 [ 33.540195] ? lock_downgrade+0x980/0x980 [ 33.544335] ? lock_release+0xa40/0xa40 [ 33.548304] ? check_same_owner+0x320/0x320 [ 33.552617] ? __check_object_size+0x8b/0x530 [ 33.557119] ? security_socket_sendmsg+0x89/0xb0 [ 33.561867] ? packet_cached_dev_get+0x2b0/0x2b0 [ 33.566613] sock_sendmsg+0xca/0x110 [ 33.570318] SYSC_sendto+0x361/0x5c0 [ 33.574023] ? SYSC_connect+0x4a0/0x4a0 [ 33.577988] ? SyS_dup+0xb0/0xb0 [ 33.581346] ? get_unused_fd_flags+0x190/0x190 [ 33.585925] ? alloc_file+0x27e/0x390 [ 33.589715] ? _raw_spin_unlock+0x22/0x30 [ 33.593868] ? fget_raw+0x20/0x20 [ 33.597313] ? fd_install+0x4d/0x60 [ 33.600931] ? sock_map_fd+0x53/0x90 [ 33.604632] ? SyS_socket+0x12d/0x1d0 [ 33.608424] ? security_file_fcntl+0x89/0xb0 [ 33.612822] SyS_sendto+0x40/0x50 [ 33.616265] ? SyS_getpeername+0x30/0x30 [ 33.620315] do_syscall_64+0x281/0x940 [ 33.624193] ? vmalloc_sync_all+0x30/0x30 [ 33.628328] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.633075] ? syscall_return_slowpath+0x550/0x550 [ 33.637999] ? syscall_return_slowpath+0x2ac/0x550 [ 33.642920] ? prepare_exit_to_usermode+0x350/0x350 [ 33.647925] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 33.653282] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.658123] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.663301] RIP: 0033:0x4419a9 [ 33.666476] RSP: 002b:00007fffd9e24db8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 33.674174] RAX: ffffffffffffffda RBX: 000000000000001a RCX: 00000000004419a9 [ 33.681431] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000008 [ 33.688689] RBP: 00000000004a351c R08: 0000000020000180 R09: 000000000000001c [ 33.695947] R10: 0000000000000000 R11: 0000000000000212 R12: 00007fffd9e24eb0 [ 33.703203] R13: 0000000000402680 R14: 0000000000000000 R15: 0000000000000000 [ 33.710472] [ 33.712088] Allocated by task 4477: [ 33.715707] save_stack+0x43/0xd0 [ 33.719152] kasan_kmalloc+0xad/0xe0 [ 33.722857] __kmalloc_node_track_caller+0x47/0x70 [ 33.727777] __kmalloc_reserve.isra.39+0x41/0xd0 [ 33.732520] __alloc_skb+0x12a/0x760 [ 33.736218] alloc_skb_with_frags+0x10d/0x750 [ 33.740703] sock_alloc_send_pskb+0x7b3/0x9e0 [ 33.745189] packet_sendmsg+0x1ed7/0x6020 [ 33.749325] sock_sendmsg+0xca/0x110 [ 33.753030] SYSC_sendto+0x361/0x5c0 [ 33.756731] SyS_sendto+0x40/0x50 [ 33.760171] do_syscall_64+0x281/0x940 [ 33.764048] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.769223] [ 33.770842] Freed by task 4477: [ 33.774112] save_stack+0x43/0xd0 [ 33.777553] __kasan_slab_free+0x11a/0x170 [ 33.781777] kasan_slab_free+0xe/0x10 [ 33.785563] kfree+0xd9/0x260 [ 33.788658] skb_free_head+0x74/0xb0 [ 33.792361] skb_release_data+0x5c1/0x790 [ 33.796498] skb_release_all+0x4a/0x60 [ 33.800373] consume_skb+0x160/0x490 [ 33.804086] packet_rcv+0x15b/0x17a0 [ 33.807792] dev_queue_xmit_nit+0x866/0xc40 [ 33.812104] dev_hard_start_xmit+0x16b/0xac0 [ 33.816501] __dev_queue_xmit+0x26cf/0x2fd0 [ 33.820808] dev_queue_xmit+0x17/0x20 [ 33.824598] packet_sendmsg+0x3ad9/0x6020 [ 33.828734] sock_sendmsg+0xca/0x110 [ 33.832434] SYSC_sendto+0x361/0x5c0 [ 33.836136] SyS_sendto+0x40/0x50 [ 33.839579] do_syscall_64+0x281/0x940 [ 33.843453] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.848635] [ 33.850249] The buggy address belongs to the object at ffff8801b200e7c0 [ 33.850249] which belongs to the cache kmalloc-512 of size 512 [ 33.862898] The buggy address is located 224 bytes inside of [ 33.862898] 512-byte region [ffff8801b200e7c0, ffff8801b200e9c0) [ 33.874759] The buggy address belongs to the page: [ 33.877894] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.879674] page:ffffea0006c80380 count:1 mapcount:0 mapping:ffff8801b200e040 index:0x0 [ 33.879683] flags: 0x2fffc0000000100(slab) [ 33.879694] raw: 02fffc0000000100 ffff8801b200e040 0000000000000000 0000000100000006 [ 33.879702] raw: ffffea0006c7a0a0 ffffea0006c71b20 ffff8801dac00940 0000000000000000 [ 33.913783] page dumped because: kasan: bad access detected [ 33.919478] [ 33.921091] Memory state around the buggy address: [ 33.926011] ffff8801b200e780: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 33.933359] ffff8801b200e800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.939678] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.940700] >ffff8801b200e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.940705] ^ [ 33.940711] ffff8801b200e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.940717] ffff8801b200e980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 33.940720] ================================================================== [ 33.940727] Disabling lock debugging due to kernel taint [ 33.985958] Kernel panic - not syncing: panic_on_warn set ... [ 33.985958] [ 33.993314] CPU: 1 PID: 4477 Comm: syzkaller241622 Tainted: G B 4.16.0+ #11 [ 34.001616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.010953] Call Trace: [ 34.013531] dump_stack+0x1a7/0x27d [ 34.017151] ? arch_local_irq_restore+0x53/0x53 [ 34.021807] ? kasan_end_report+0x32/0x50 [ 34.025941] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.030685] ? vsnprintf+0x1ed/0x1900 [ 34.034470] ? skb_release_data+0x120/0x790 [ 34.038774] panic+0x1f8/0x42c [ 34.041954] ? refcount_error_report+0x214/0x214 [ 34.046698] ? do_raw_spin_unlock+0x9e/0x310 [ 34.051096] ? do_raw_spin_unlock+0x9e/0x310 [ 34.055489] ? skb_release_data+0x16a/0x790 [ 34.059795] kasan_end_report+0x50/0x50 [ 34.063755] kasan_report+0x149/0x360 [ 34.067543] check_memory_region+0x137/0x190 [ 34.071936] kasan_check_write+0x14/0x20 [ 34.075982] skb_release_data+0x16a/0x790 [ 34.080119] ? refcount_inc_not_zero+0x280/0x280 [ 34.084863] ? kfree_skbmem+0xe2/0x1e0 [ 34.088735] ? skb_tx_error+0x2c0/0x2c0 [ 34.092700] ? sock_wfree+0xbc/0x140 [ 34.096397] ? sk_common_release+0x2f0/0x2f0 [ 34.100791] skb_release_all+0x4a/0x60 [ 34.104664] kfree_skb+0x16b/0x4c0 [ 34.108193] ? ip6_tnl_start_xmit+0x184/0x2070 [ 34.112758] ? __kfree_skb+0x20/0x20 [ 34.116463] ? packet_sendmsg+0x6020/0x6020 [ 34.120774] ? ___ratelimit+0x30d/0x630 [ 34.124738] ip6_tnl_start_xmit+0x184/0x2070 [ 34.129136] ? ip6_tnl_xmit+0x31c0/0x31c0 [ 34.133269] ? lock_downgrade+0x980/0x980 [ 34.137405] ? vprintk_func+0x5e/0xc0 [ 34.141192] ? kasan_check_read+0x11/0x20 [ 34.145331] ? rcu_is_watching+0x85/0x130 [ 34.149462] ? rcu_report_exp_cpu_mult+0x480/0x480 [ 34.154383] ? dev_queue_xmit_nit+0x9b0/0xc40 [ 34.158866] ? trace_hardirqs_off+0x10/0x10 [ 34.163178] ? dev_queue_xmit_nit+0x8af/0xc40 [ 34.167665] ? __lock_is_held+0xb6/0x140 [ 34.171719] dev_hard_start_xmit+0x24e/0xac0 [ 34.176111] ? SYSC_sendto+0x361/0x5c0 [ 34.179987] ? validate_xmit_skb_list+0x120/0x120 [ 34.184820] ? netif_skb_features+0x5ff/0x9b0 [ 34.189303] ? __skb_gso_segment+0x840/0x840 [ 34.193701] ? validate_xmit_xfrm+0xb8/0xda0 [ 34.198098] ? lock_acquire+0x1d5/0x580 [ 34.202083] ? __dev_queue_xmit+0x2fe/0x2fd0 [ 34.206479] ? validate_xmit_skb+0x512/0xb40 [ 34.210872] ? netif_skb_features+0x9b0/0x9b0 [ 34.215357] __dev_queue_xmit+0x26cf/0x2fd0 [ 34.219667] ? netdev_pick_tx+0x2c0/0x2c0 [ 34.223804] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 34.228981] ? lock_pin_lock+0x360/0x360 [ 34.233033] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 34.238212] ? kasan_check_read+0x11/0x20 [ 34.242344] ? refcount_add_not_zero+0x1c0/0x2b0 [ 34.247089] ? refcount_dec_if_one+0x170/0x170 [ 34.251658] ? alloc_skb_with_frags+0x468/0x750 [ 34.256319] ? check_same_owner+0x320/0x320 [ 34.260627] ? refcount_add+0x24/0x60 [ 34.264412] ? skb_set_owner_w+0x232/0x330 [ 34.268636] ? sock_alloc_send_pskb+0x6e6/0x9e0 [ 34.273291] ? print_irqtrace_events+0x270/0x270 [ 34.278042] ? sock_wmalloc+0x1e0/0x1e0 [ 34.282007] ? dev_get_by_index+0xbf/0x170 [ 34.286228] ? lock_downgrade+0x980/0x980 [ 34.290362] ? cap_capable+0x1b5/0x230 [ 34.294236] ? security_capable+0x8e/0xc0 [ 34.298371] dev_queue_xmit+0x17/0x20 [ 34.302159] ? dev_queue_xmit+0x17/0x20 [ 34.306127] packet_sendmsg+0x3ad9/0x6020 [ 34.310265] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 34.315447] ? __lock_acquire+0x638/0x3c30 [ 34.319669] ? trace_hardirqs_off+0x10/0x10 [ 34.323978] ? kernel_text_address+0xd1/0xe0 [ 34.328372] ? __unwind_start+0x169/0x330 [ 34.332511] ? packet_cached_dev_get+0x2b0/0x2b0 [ 34.337256] ? trace_hardirqs_off+0x10/0x10 [ 34.341566] ? expand_files+0x50a/0x910 [ 34.345524] ? get_empty_filp+0xfb/0x510 [ 34.349566] ? alloc_file+0x26/0x390 [ 34.353267] ? sock_alloc_file+0x1f3/0x560 [ 34.357487] ? trace_hardirqs_off+0x10/0x10 [ 34.361799] ? find_held_lock+0x35/0x1d0 [ 34.365883] ? __fd_install+0x25f/0x740 [ 34.369847] ? lock_downgrade+0x980/0x980 [ 34.373983] ? find_held_lock+0x35/0x1d0 [ 34.378033] ? __might_fault+0x110/0x1d0 [ 34.382083] ? lock_downgrade+0x980/0x980 [ 34.386219] ? lock_release+0xa40/0xa40 [ 34.390180] ? check_same_owner+0x320/0x320 [ 34.394486] ? __check_object_size+0x8b/0x530 [ 34.398975] ? security_socket_sendmsg+0x89/0xb0 [ 34.403719] ? packet_cached_dev_get+0x2b0/0x2b0 [ 34.408459] sock_sendmsg+0xca/0x110 [ 34.412156] SYSC_sendto+0x361/0x5c0 [ 34.415861] ? SYSC_connect+0x4a0/0x4a0 [ 34.419823] ? SyS_dup+0xb0/0xb0 [ 34.423180] ? get_unused_fd_flags+0x190/0x190 [ 34.427751] ? alloc_file+0x27e/0x390 [ 34.431544] ? _raw_spin_unlock+0x22/0x30 [ 34.435684] ? fget_raw+0x20/0x20 [ 34.439130] ? fd_install+0x4d/0x60 [ 34.442742] ? sock_map_fd+0x53/0x90 [ 34.446438] ? SyS_socket+0x12d/0x1d0 [ 34.450222] ? security_file_fcntl+0x89/0xb0 [ 34.454619] SyS_sendto+0x40/0x50 [ 34.458056] ? SyS_getpeername+0x30/0x30 [ 34.462106] do_syscall_64+0x281/0x940 [ 34.465982] ? vmalloc_sync_all+0x30/0x30 [ 34.470117] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.474858] ? syscall_return_slowpath+0x550/0x550 [ 34.479758] ? syscall_return_slowpath+0x2ac/0x550 [ 34.484659] ? prepare_exit_to_usermode+0x350/0x350 [ 34.489646] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.494981] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.499801] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.504972] RIP: 0033:0x4419a9 [ 34.508130] RSP: 002b:00007fffd9e24db8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 34.515827] RAX: ffffffffffffffda RBX: 000000000000001a RCX: 00000000004419a9 [ 34.523065] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000008 [ 34.530304] RBP: 00000000004a351c R08: 0000000020000180 R09: 000000000000001c [ 34.537543] R10: 0000000000000000 R11: 0000000000000212 R12: 00007fffd9e24eb0 [ 34.544782] R13: 0000000000402680 R14: 0000000000000000 R15: 0000000000000000 [ 34.552488] Dumping ftrace buffer: [ 34.556012] (ftrace buffer empty) [ 34.559693] Kernel Offset: disabled [ 34.563292] Rebooting in 86400 seconds..