Debian GNU/Linux 7 syzkaller ttyS0 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 syzkaller login: [ 23.563015] dev_remove_pack: ffff88003b98f080 not found executing program executing program executing program executing program [ 23.602200] ================================================================== [ 23.603015] BUG: KASAN: use-after-free in packet_rcv_fanout+0x78a/0x7d0 [ 23.603705] Read of size 8 at addr ffff88003b98f090 by task sshd/2981 [ 23.604379] [ 23.604561] CPU: 0 PID: 2981 Comm: sshd Not tainted 4.13.0-next-20170912+ #2 [ 23.605296] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 23.606441] Call Trace: [ 23.606723] [ 23.607015] dump_stack+0x194/0x257 [ 23.607506] ? arch_local_irq_restore+0x53/0x53 [ 23.607856] ? show_regs_print_info+0x65/0x65 [ 23.608163] ? kfree_skb+0x16a/0x4c0 [ 23.608440] ? packet_rcv_spkt+0x117/0x5b0 [ 23.608713] ? packet_rcv_fanout+0x78a/0x7d0 [ 23.609014] print_address_description+0x73/0x250 [ 23.609360] ? packet_rcv_fanout+0x78a/0x7d0 [ 23.609660] kasan_report+0x24e/0x340 [ 23.609920] __asan_report_load8_noabort+0x14/0x20 [ 23.610339] packet_rcv_fanout+0x78a/0x7d0 [ 23.610753] ? compat_packet_setsockopt+0x140/0x140 [ 23.611206] ? refcount_add+0x60/0x60 [ 23.611511] ? packet_rcv_fanout+0x7d0/0x7d0 [ 23.611814] __netif_receive_skb_core+0xc12/0x33d0 [ 23.612157] ? nf_ingress+0x9f0/0x9f0 [ 23.612467] ? bpf_prog_alloc+0x310/0x310 [ 23.612753] ? check_noncircular+0x20/0x20 [ 23.613054] ? lock_release+0xd70/0xd70 [ 23.613361] ? print_usage_bug+0x480/0x480 [ 23.613688] ? perf_trace_lock+0x860/0x860 [ 23.613990] ? find_held_lock+0x39/0x1d0 [ 23.614277] ? perf_trace_lock_acquire+0xfe/0x900 [ 23.614620] ? perf_trace_lock+0x860/0x860 [ 23.614904] ? lock_acquire+0x1d5/0x580 [ 23.615164] ? netif_receive_skb_internal+0x1d7/0x670 [ 23.615531] ? pvclock_read_flags+0x160/0x160 [ 23.615832] ? mark_held_locks+0xb2/0x100 [ 23.616115] ? lock_acquire+0x1d5/0x580 [ 23.616559] ? netif_receive_skb_internal+0xa2/0x670 [ 23.617071] ? ktime_get_with_offset+0x2c1/0x420 [ 23.617554] ? lock_release+0xd70/0xd70 [ 23.617935] ? ktime_get+0x3a0/0x3a0 [ 23.618282] __netif_receive_skb+0x2c/0x1b0 [ 23.618712] ? __netif_receive_skb+0x2c/0x1b0 [ 23.619183] netif_receive_skb_internal+0x10b/0x670 [ 23.620281] ? __build_skb+0x9d/0x450 [ 23.620685] ? dev_cpu_dead+0xb00/0xb00 [ 23.621123] ? net_rx_action+0x1910/0x1910 [ 23.621601] ? __lock_is_held+0xbc/0x140 [ 23.622030] ? skb_gro_reset_offset+0x17b/0x300 [ 23.622510] napi_gro_receive+0x3d0/0x500 [ 23.622918] ? dev_gro_receive+0x19b0/0x19b0 [ 23.623297] ? __alloc_pages_nodemask+0xd80/0xd80 [ 23.623652] ? eth_type_trans+0x2a3/0x650 [ 23.623942] ? __lock_is_held+0xbc/0x140 [ 23.624296] ? eth_gro_receive+0x810/0x810 [ 23.624710] e1000_clean_rx_irq+0x58d/0x1330 [ 23.625129] ? e1000_clean_jumbo_rx_irq+0x27d0/0x27d0 [ 23.625629] ? dql_init+0x2e0/0x2e0 [ 23.625956] ? __dev_kfree_skb_any+0x8a/0xa0 [ 23.626366] ? e1000_unmap_and_free_tx_resource.isra.46+0x1eb/0x390 [ 23.626940] ? mark_held_locks+0xb2/0x100 [ 23.627321] ? e1000_clean_jumbo_rx_irq+0x27d0/0x27d0 [ 23.627711] e1000_clean+0xb39/0x2610 [ 23.628060] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 23.628460] ? trace_hardirqs_on+0xd/0x10 [ 23.628850] ? e1000_unmap_and_free_tx_resource.isra.46+0x390/0x390 [ 23.629415] ? find_held_lock+0x39/0x1d0 [ 23.629794] ? lock_downgrade+0x990/0x990 [ 23.630170] ? find_first_bit+0x8d/0xd0 [ 23.630540] ? mark_held_locks+0xb2/0x100 [ 23.630921] ? net_rx_action+0x49b/0x1910 [ 23.631303] net_rx_action+0x792/0x1910 [ 23.631676] ? napi_complete_done+0x6c0/0x6c0 [ 23.632088] ? lock_downgrade+0x990/0x990 [ 23.632471] ? __run_timers+0x1ce/0xb90 [ 23.632846] ? mark_held_locks+0xb2/0x100 [ 23.633223] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.633635] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 23.634090] ? trace_hardirqs_on+0xd/0x10 [ 23.634467] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.634875] ? __run_timers+0x16f/0xb90 [ 23.635244] ? del_timer_sync+0x240/0x240 [ 23.635622] ? print_usage_bug+0x480/0x480 [ 23.636041] ? pvclock_read_flags+0x160/0x160 [ 23.636455] ? check_noncircular+0x20/0x20 [ 23.636837] ? kvm_clock_get_cycles+0x25/0x30 [ 23.637243] ? ktime_get+0x26f/0x3a0 [ 23.637592] ? do_gettimeofday+0x190/0x190 [ 23.637980] ? check_noncircular+0x20/0x20 [ 23.638363] ? do_raw_spin_trylock+0x190/0x190 [ 23.638778] ? do_timer+0x50/0x50 [ 23.639096] ? __lock_is_held+0xbc/0x140 [ 23.639477] __do_softirq+0x2bb/0xbd0 [ 23.639819] ? __lock_is_held+0xbc/0x140 [ 23.640199] ? __softirqentry_text_start+0x8/0x8 [ 23.640627] ? irq_exit+0x103/0x210 [ 23.641304] ? smp_apic_timer_interrupt+0x177/0x710 [ 23.641763] ? smp_call_function_single_interrupt+0x650/0x650 [ 23.642292] ? kvm_guest_apic_eoi_write+0x6a/0x80 [ 23.642729] ? ioapic_ack_level+0x165/0x450 [ 23.643121] ? _raw_spin_lock+0x32/0x40 [ 23.643483] ? _raw_spin_unlock+0x22/0x30 [ 23.643859] ? handle_fasteoi_irq+0x2db/0x510 [ 23.644287] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.644787] do_softirq_own_stack+0x2a/0x40 [ 23.645220] [ 23.645439] do_softirq.part.20+0x14d/0x190 [ 23.645841] ? ip_finish_output2+0x87a/0x1460 [ 23.646250] __local_bh_enable_ip+0x135/0x160 [ 23.646659] ip_finish_output2+0x8ad/0x1460 [ 23.647057] ? dst_output+0x140/0x140 [ 23.647407] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.647862] ? ipt_do_table+0xd04/0x1330 [ 23.648232] ? trace_hardirqs_on+0xd/0x10 [ 23.648613] ? find_held_lock+0x39/0x1d0 [ 23.648984] ? ipv4_mtu+0x28c/0x3d0 [ 23.649331] ? __lock_is_held+0xbc/0x140 [ 23.649652] ip_finish_output+0x85e/0xd10 [ 23.650026] ? ip_finish_output+0x85e/0xd10 [ 23.650420] ? ip_fragment.constprop.50+0x200/0x200 [ 23.650872] ? iptable_mangle_hook+0xa9/0x550 [ 23.651284] ? nf_hook_slow+0xd3/0x1a0 [ 23.651644] ip_output+0x1cc/0x860 [ 23.651970] ? ip_mc_output+0x1350/0x1350 [ 23.652354] ? ip_fragment.constprop.50+0x200/0x200 [ 23.652840] ip_local_out+0x95/0x160 [ 23.653186] ip_queue_xmit+0x8c6/0x18e0 [ 23.653565] ? ip_build_and_send_pkt+0xc30/0xc30 [ 23.654000] ? refcount_dec_if_one+0x20/0x20 [ 23.654407] ? __tcp_v4_send_check+0x1b8/0x350 [ 23.654819] ? tcp_options_write+0x228/0x940 [ 23.655223] tcp_transmit_skb+0x1947/0x3300 [ 23.655621] ? bictcp_cong_avoid+0xf20/0xf20 [ 23.655930] ? __tcp_select_window+0x8d0/0x8d0 [ 23.656346] ? save_stack_trace+0x16/0x20 [ 23.656721] ? save_stack+0x43/0xd0 [ 23.657051] ? kasan_kmalloc+0xad/0xe0 [ 23.657409] ? __kmalloc_node_track_caller+0x47/0x70 [ 23.657868] ? __kmalloc_reserve.isra.40+0x41/0xd0 [ 23.658314] ? __alloc_skb+0x13b/0x740 [ 23.658665] ? sk_stream_alloc_skb+0x10d/0x860 [ 23.659105] ? tcp_sendmsg_locked+0xfef/0x3bc0 [ 23.659518] ? tcp_sendmsg+0x2f/0x50 [ 23.659858] ? inet_sendmsg+0x11f/0x5e0 [ 23.660220] ? sock_sendmsg+0xca/0x110 [ 23.660572] ? sock_write_iter+0x320/0x5e0 [ 23.660953] ? __vfs_write+0x68a/0x970 [ 23.661327] ? tcp_init_tso_segs+0x1f0/0x1f0 [ 23.661735] ? sched_clock_cpu+0x1b/0x170 [ 23.662457] ? tcp_init_tso_segs+0x114/0x1f0 [ 23.662836] tcp_write_xmit+0x5fc/0x4960 [ 23.663210] ? find_held_lock+0x39/0x1d0 [ 23.663642] ? tcp_transmit_skb+0x3300/0x3300 [ 23.664118] ? __might_fault+0xe0/0x1d0 [ 23.664505] ? iov_iter_advance+0x2a1/0x13f0 [ 23.665015] ? lock_release+0xd70/0xd70 [ 23.665443] ? tcp_v4_md5_lookup+0x22/0x30 [ 23.665837] ? iov_iter_copy_from_user_atomic+0xd30/0xd30 [ 23.666319] __tcp_push_pending_frames+0xa0/0x250 [ 23.666737] tcp_push+0x4e0/0x760 [ 23.667059] ? tcp_splice_data_recv+0x1a0/0x1a0 [ 23.667485] ? skb_entail+0x5d4/0x8d0 [ 23.667841] ? iov_iter_advance+0x13f0/0x13f0 [ 23.668254] ? tcp_send_mss+0xa4/0x2f0 [ 23.668606] ? skb_put+0x149/0x1c0 [ 23.668932] tcp_sendmsg_locked+0x17ad/0x3bc0 [ 23.669348] ? check_noncircular+0x20/0x20 [ 23.669754] ? tcp_sendpage+0x60/0x60 [ 23.670108] ? lock_downgrade+0x990/0x990 [ 23.670488] ? lock_acquire+0x1d5/0x580 [ 23.670847] ? tcp_sendmsg+0x21/0x50 [ 23.671193] ? mark_held_locks+0xb2/0x100 [ 23.671571] ? __local_bh_enable_ip+0x9d/0x160 [ 23.671986] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.672439] ? lock_sock_nested+0x91/0x110 [ 23.672822] ? trace_hardirqs_on+0xd/0x10 [ 23.673197] ? __local_bh_enable_ip+0x9d/0x160 [ 23.673621] tcp_sendmsg+0x2f/0x50 [ 23.673946] inet_sendmsg+0x11f/0x5e0 [ 23.674296] ? inet_recvmsg+0x5f0/0x5f0 [ 23.674666] ? selinux_socket_sendmsg+0x36/0x40 [ 23.675092] ? security_socket_sendmsg+0x89/0xb0 [ 23.675523] ? inet_recvmsg+0x5f0/0x5f0 [ 23.675899] sock_sendmsg+0xca/0x110 [ 23.676252] sock_write_iter+0x320/0x5e0 [ 23.676676] ? sock_sendmsg+0x110/0x110 [ 23.677047] ? iov_iter_init+0xaf/0x1d0 [ 23.677422] __vfs_write+0x68a/0x970 [ 23.677764] ? kernel_read+0x120/0x120 [ 23.678118] ? selinux_capset+0x100/0x100 [ 23.678508] ? selinux_file_permission+0x82/0x460 [ 23.678956] ? rw_verify_area+0xe5/0x2b0 [ 23.679325] ? __fdget_raw+0x20/0x20 [ 23.679664] vfs_write+0x18f/0x510 [ 23.679990] SyS_write+0xef/0x220 [ 23.680307] ? SyS_read+0x220/0x220 [ 23.680640] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.681111] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.681554] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 23.681981] RIP: 0033:0x7f2d8e134370 [ 23.682316] RSP: 002b:00007fffee671ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 23.683005] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f2d8e134370 [ 23.684180] RDX: 0000000000000038 RSI: 000055920faf5260 RDI: 0000000000000003 [ 23.684833] RBP: 0000000000000082 R08: 0000000000000001 R09: 0101010101010101 [ 23.685498] R10: 0000000000000008 R11: 0000000000000246 R12: 000055920faf3730 [ 23.686162] R13: 000055920e513fb4 R14: 0000000000000014 R15: 000055920e515ca0 [ 23.686820] [ 23.686973] Allocated by task 4195: [ 23.687300] save_stack_trace+0x16/0x20 [ 23.687658] save_stack+0x43/0xd0 [ 23.687970] kasan_kmalloc+0xad/0xe0 [ 23.688303] __kmalloc+0x162/0x760 [ 23.688620] sk_prot_alloc+0x101/0x2a0 [ 23.688970] sk_alloc+0x89/0x700 [ 23.689277] packet_create+0x169/0xb00 [ 23.689628] __sock_create+0x4d4/0x850 [ 23.689988] SyS_socket+0xeb/0x200 [ 23.690240] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 23.690516] [ 23.690617] Freed by task 4128: [ 23.690840] save_stack_trace+0x16/0x20 [ 23.691090] save_stack+0x43/0xd0 [ 23.691294] kasan_slab_free+0x71/0xc0 [ 23.691522] kfree+0xca/0x250 [ 23.691722] __sk_destruct+0x74a/0x910 [ 23.691973] sk_destruct+0x47/0x80 [ 23.692300] __sk_free+0x57/0x230 [ 23.692618] sk_free+0x2a/0x40 [ 23.692914] packet_release+0x859/0xd70 [ 23.693277] sock_release+0x8d/0x1e0 [ 23.693571] sock_close+0x16/0x20 [ 23.693795] __fput+0x333/0x7f0 [ 23.694000] ____fput+0x15/0x20 [ 23.694194] task_work_run+0x199/0x270 [ 23.694421] do_exit+0xa52/0x1b40 [ 23.694624] do_group_exit+0x149/0x400 [ 23.694893] SyS_exit_group+0x1d/0x20 [ 23.695118] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 23.695394] [ 23.695495] The buggy address belongs to the object at ffff88003b98e8c0 [ 23.695495] which belongs to the cache kmalloc-2048 of size 2048 [ 23.696256] The buggy address is located 2000 bytes inside of [ 23.696256] 2048-byte region [ffff88003b98e8c0, ffff88003b98f0c0) [ 23.696978] The buggy address belongs to the page: [ 23.697268] page:ffffea0000ee6380 count:1 mapcount:0 mapping:ffff88003b98e040 index:0x0 compound_mapcount: 0 [ 23.698005] flags: 0x100000000008100(slab|head) [ 23.698438] raw: 0100000000008100 ffff88003b98e040 0000000000000000 0000000100000003 [ 23.699159] raw: ffffea0000e91120 ffffea0000ee2120 ffff88003e800c40 0000000000000000 [ 23.699883] page dumped because: kasan: bad access detected [ 23.700782] [ 23.700980] Memory state around the buggy address: [ 23.701928] ffff88003b98ef80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.703266] ffff88003b98f000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.703961] >ffff88003b98f080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.704622] ^ [ 23.705577] ffff88003b98f100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 23.706179] ffff88003b98f180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.706852] ================================================================== [ 23.707510] Disabling lock debugging due to kernel taint [ 23.708020] Kernel panic - not syncing: panic_on_warn set ... [ 23.708020] [ 23.708683] CPU: 0 PID: 2981 Comm: sshd Tainted: G B 4.13.0-next-20170912+ #2 [ 23.709447] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 23.710184] Call Trace: [ 23.710414] [ 23.710613] dump_stack+0x194/0x257 [ 23.710944] ? arch_local_irq_restore+0x53/0x53 [ 23.711365] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.711795] ? packet_rcv_fanout+0x6b0/0x7d0 [ 23.712192] panic+0x1e4/0x417 [ 23.712481] ? __warn+0x1d9/0x1d9 [ 23.712804] ? packet_rcv_fanout+0x78a/0x7d0 [ 23.713204] kasan_end_report+0x50/0x50 [ 23.713579] kasan_report+0x137/0x340 [ 23.713924] __asan_report_load8_noabort+0x14/0x20 [ 23.714364] packet_rcv_fanout+0x78a/0x7d0 [ 23.714741] ? compat_packet_setsockopt+0x140/0x140 [ 23.715186] ? refcount_add+0x60/0x60 [ 23.715528] ? packet_rcv_fanout+0x7d0/0x7d0 [ 23.715927] __netif_receive_skb_core+0xc12/0x33d0 [ 23.716371] ? nf_ingress+0x9f0/0x9f0 [ 23.716714] ? bpf_prog_alloc+0x310/0x310 [ 23.717082] ? check_noncircular+0x20/0x20 [ 23.717467] ? lock_release+0xd70/0xd70 [ 23.717825] ? print_usage_bug+0x480/0x480 [ 23.718202] ? perf_trace_lock+0x860/0x860 [ 23.718583] ? find_held_lock+0x39/0x1d0 [ 23.718949] ? perf_trace_lock_acquire+0xfe/0x900 [ 23.719386] ? perf_trace_lock+0x860/0x860 [ 23.719766] ? lock_acquire+0x1d5/0x580 [ 23.720121] ? netif_receive_skb_internal+0x1d7/0x670 [ 23.720590] ? pvclock_read_flags+0x160/0x160 [ 23.720979] ? mark_held_locks+0xb2/0x100 [ 23.721368] ? lock_acquire+0x1d5/0x580 [ 23.721725] ? netif_receive_skb_internal+0xa2/0x670 [ 23.722182] ? ktime_get_with_offset+0x2c1/0x420 [ 23.722612] ? lock_release+0xd70/0xd70 [ 23.722968] ? ktime_get+0x3a0/0x3a0 [ 23.723310] __netif_receive_skb+0x2c/0x1b0 [ 23.723699] ? __netif_receive_skb+0x2c/0x1b0 [ 23.724108] netif_receive_skb_internal+0x10b/0x670 [ 23.724558] ? __build_skb+0x9d/0x450 [ 23.724904] ? dev_cpu_dead+0xb00/0xb00 [ 23.725262] ? net_rx_action+0x1910/0x1910 [ 23.725665] ? __lock_is_held+0xbc/0x140 [ 23.726035] ? skb_gro_reset_offset+0x17b/0x300 [ 23.726805] napi_gro_receive+0x3d0/0x500 [ 23.727177] ? dev_gro_receive+0x19b0/0x19b0 [ 23.727576] ? __alloc_pages_nodemask+0xd80/0xd80 [ 23.728017] ? eth_type_trans+0x2a3/0x650 [ 23.728391] ? __lock_is_held+0xbc/0x140 [ 23.728767] ? eth_gro_receive+0x810/0x810 [ 23.729159] e1000_clean_rx_irq+0x58d/0x1330 [ 23.729592] ? e1000_clean_jumbo_rx_irq+0x27d0/0x27d0 [ 23.730060] ? dql_init+0x2e0/0x2e0 [ 23.730391] ? __dev_kfree_skb_any+0x8a/0xa0 [ 23.730790] ? e1000_unmap_and_free_tx_resource.isra.46+0x1eb/0x390 [ 23.731358] ? mark_held_locks+0xb2/0x100 [ 23.731735] ? e1000_clean_jumbo_rx_irq+0x27d0/0x27d0 [ 23.732199] e1000_clean+0xb39/0x2610 [ 23.732546] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 23.732996] ? trace_hardirqs_on+0xd/0x10 [ 23.733442] ? e1000_unmap_and_free_tx_resource.isra.46+0x390/0x390 [ 23.734646] ? find_held_lock+0x39/0x1d0 [ 23.735475] ? lock_downgrade+0x990/0x990 [ 23.736365] ? find_first_bit+0x8d/0xd0 [ 23.737194] ? mark_held_locks+0xb2/0x100 [ 23.737996] ? net_rx_action+0x49b/0x1910 [ 23.738420] net_rx_action+0x792/0x1910 [ 23.738811] ? napi_complete_done+0x6c0/0x6c0 [ 23.739208] ? lock_downgrade+0x990/0x990 [ 23.739620] ? __run_timers+0x1ce/0xb90 [ 23.740058] ? mark_held_locks+0xb2/0x100 [ 23.740408] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.740787] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 23.741223] ? trace_hardirqs_on+0xd/0x10 [ 23.741578] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.741923] ? __run_timers+0x16f/0xb90 [ 23.742243] ? del_timer_sync+0x240/0x240 [ 23.742563] ? print_usage_bug+0x480/0x480 [ 23.743002] ? pvclock_read_flags+0x160/0x160 [ 23.743501] ? check_noncircular+0x20/0x20 [ 23.744024] ? kvm_clock_get_cycles+0x25/0x30 [ 23.744589] ? ktime_get+0x26f/0x3a0 [ 23.744957] ? do_gettimeofday+0x190/0x190 [ 23.745345] ? check_noncircular+0x20/0x20 [ 23.745817] ? do_raw_spin_trylock+0x190/0x190 [ 23.746544] ? do_timer+0x50/0x50 [ 23.747023] ? __lock_is_held+0xbc/0x140 [ 23.748016] __do_softirq+0x2bb/0xbd0 [ 23.748407] ? __lock_is_held+0xbc/0x140 [ 23.748793] ? __softirqentry_text_start+0x8/0x8 [ 23.749488] ? irq_exit+0x103/0x210 [ 23.749847] ? smp_apic_timer_interrupt+0x177/0x710 [ 23.750360] ? smp_call_function_single_interrupt+0x650/0x650 [ 23.751048] ? kvm_guest_apic_eoi_write+0x6a/0x80 [ 23.751967] ? ioapic_ack_level+0x165/0x450 [ 23.752833] ? _raw_spin_lock+0x32/0x40 [ 23.753516] ? _raw_spin_unlock+0x22/0x30 [ 23.753916] ? handle_fasteoi_irq+0x2db/0x510 [ 23.754325] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.754775] do_softirq_own_stack+0x2a/0x40 [ 23.755159] [ 23.755361] do_softirq.part.20+0x14d/0x190 [ 23.755748] ? ip_finish_output2+0x87a/0x1460 [ 23.756150] __local_bh_enable_ip+0x135/0x160 [ 23.756551] ip_finish_output2+0x8ad/0x1460 [ 23.756941] ? dst_output+0x140/0x140 [ 23.757324] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.757679] ? ipt_do_table+0xd04/0x1330 [ 23.758042] ? trace_hardirqs_on+0xd/0x10 [ 23.758414] ? find_held_lock+0x39/0x1d0 [ 23.758749] ? ipv4_mtu+0x28c/0x3d0 [ 23.759076] ? __lock_is_held+0xbc/0x140 [ 23.759446] ip_finish_output+0x85e/0xd10 [ 23.759817] ? ip_finish_output+0x85e/0xd10 [ 23.760203] ? ip_fragment.constprop.50+0x200/0x200 [ 23.760651] ? iptable_mangle_hook+0xa9/0x550 [ 23.761054] ? nf_hook_slow+0xd3/0x1a0 [ 23.761418] ip_output+0x1cc/0x860 [ 23.761735] ? ip_mc_output+0x1350/0x1350 [ 23.762113] ? ip_fragment.constprop.50+0x200/0x200 [ 23.762565] ip_local_out+0x95/0x160 [ 23.762903] ip_queue_xmit+0x8c6/0x18e0 [ 23.763263] ? ip_build_and_send_pkt+0xc30/0xc30 [ 23.763688] ? refcount_dec_if_one+0x20/0x20 [ 23.764087] ? __tcp_v4_send_check+0x1b8/0x350 [ 23.764499] ? tcp_options_write+0x228/0x940 [ 23.764900] tcp_transmit_skb+0x1947/0x3300 [ 23.765298] ? bictcp_cong_avoid+0xf20/0xf20 [ 23.765690] ? __tcp_select_window+0x8d0/0x8d0 [ 23.766096] ? save_stack_trace+0x16/0x20 [ 23.766461] ? save_stack+0x43/0xd0 [ 23.766781] ? kasan_kmalloc+0xad/0xe0 [ 23.767126] ? __kmalloc_node_track_caller+0x47/0x70 [ 23.767576] ? __kmalloc_reserve.isra.40+0x41/0xd0 [ 23.768011] ? __alloc_skb+0x13b/0x740 [ 23.768354] ? sk_stream_alloc_skb+0x10d/0x860 [ 23.768977] ? tcp_sendmsg_locked+0xfef/0x3bc0 [ 23.769367] ? tcp_sendmsg+0x2f/0x50 [ 23.769667] ? inet_sendmsg+0x11f/0x5e0 [ 23.770028] ? sock_sendmsg+0xca/0x110 [ 23.770373] ? sock_write_iter+0x320/0x5e0 [ 23.770774] ? __vfs_write+0x68a/0x970 [ 23.771126] ? tcp_init_tso_segs+0x1f0/0x1f0 [ 23.771522] ? sched_clock_cpu+0x1b/0x170 [ 23.771893] ? tcp_init_tso_segs+0x114/0x1f0 [ 23.772285] tcp_write_xmit+0x5fc/0x4960 [ 23.772647] ? find_held_lock+0x39/0x1d0 [ 23.773016] ? tcp_transmit_skb+0x3300/0x3300 [ 23.773429] ? __might_fault+0xe0/0x1d0 [ 23.773785] ? iov_iter_advance+0x2a1/0x13f0 [ 23.774183] ? lock_release+0xd70/0xd70 [ 23.774536] ? tcp_v4_md5_lookup+0x22/0x30 [ 23.774919] ? iov_iter_copy_from_user_atomic+0xd30/0xd30 [ 23.775411] __tcp_push_pending_frames+0xa0/0x250 [ 23.775850] tcp_push+0x4e0/0x760 [ 23.776157] ? tcp_splice_data_recv+0x1a0/0x1a0 [ 23.776566] ? skb_entail+0x5d4/0x8d0 [ 23.776904] ? iov_iter_advance+0x13f0/0x13f0 [ 23.777312] ? tcp_send_mss+0xa4/0x2f0 [ 23.777654] ? skb_put+0x149/0x1c0 [ 23.777948] tcp_sendmsg_locked+0x17ad/0x3bc0 [ 23.778256] ? check_noncircular+0x20/0x20 [ 23.778560] ? tcp_sendpage+0x60/0x60 [ 23.778879] ? lock_downgrade+0x990/0x990 [ 23.779251] ? lock_acquire+0x1d5/0x580 [ 23.779601] ? tcp_sendmsg+0x21/0x50 [ 23.779935] ? mark_held_locks+0xb2/0x100 [ 23.780300] ? __local_bh_enable_ip+0x9d/0x160 [ 23.780706] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.781155] ? lock_sock_nested+0x91/0x110 [ 23.781542] ? trace_hardirqs_on+0xd/0x10 [ 23.781910] ? __local_bh_enable_ip+0x9d/0x160 [ 23.782321] tcp_sendmsg+0x2f/0x50 [ 23.782637] inet_sendmsg+0x11f/0x5e0 [ 23.782979] ? inet_recvmsg+0x5f0/0x5f0 [ 23.783336] ? selinux_socket_sendmsg+0x36/0x40 [ 23.783752] ? security_socket_sendmsg+0x89/0xb0 [ 23.784176] ? inet_recvmsg+0x5f0/0x5f0 [ 23.784534] sock_sendmsg+0xca/0x110 [ 23.784867] sock_write_iter+0x320/0x5e0 [ 23.785232] ? sock_sendmsg+0x110/0x110 [ 23.785598] ? iov_iter_init+0xaf/0x1d0 [ 23.785935] __vfs_write+0x68a/0x970 [ 23.786254] ? kernel_read+0x120/0x120 [ 23.786594] ? selinux_capset+0x100/0x100 [ 23.786976] ? selinux_file_permission+0x82/0x460 [ 23.787412] ? rw_verify_area+0xe5/0x2b0 [ 23.787812] ? __fdget_raw+0x20/0x20 [ 23.788201] vfs_write+0x18f/0x510 [ 23.788562] SyS_write+0xef/0x220 [ 23.788966] ? SyS_read+0x220/0x220 [ 23.789363] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.789857] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.791022] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 23.791452] RIP: 0033:0x7f2d8e134370 [ 23.791781] RSP: 002b:00007fffee671ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 23.792467] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f2d8e134370 [ 23.793112] RDX: 0000000000000038 RSI: 000055920faf5260 RDI: 0000000000000003 [ 23.793778] RBP: 0000000000000082 R08: 0000000000000001 R09: 0101010101010101 [ 23.794431] R10: 0000000000000008 R11: 0000000000000246 R12: 000055920faf3730 [ 23.795086] R13: 000055920e513fb4 R14: 0000000000000014 R15: 000055920e515ca0 [ 23.795887] Dumping ftrace buffer: [ 23.796212] (ftrace buffer empty) [ 23.796548] Kernel Offset: disabled [ 23.796880] Rebooting in 86400 seconds..