Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. 2021/09/21 23:23:03 parsed 1 programs 2021/09/21 23:23:04 executed programs: 0 syzkaller login: [ 409.615506] IPVS: ftp: loaded support on port[0] = 21 [ 409.711893] chnl_net:caif_netlink_parms(): no params data found [ 409.788207] bridge0: port 1(bridge_slave_0) entered blocking state [ 409.795111] bridge0: port 1(bridge_slave_0) entered disabled state [ 409.803609] device bridge_slave_0 entered promiscuous mode [ 409.811215] bridge0: port 2(bridge_slave_1) entered blocking state [ 409.817582] bridge0: port 2(bridge_slave_1) entered disabled state [ 409.825450] device bridge_slave_1 entered promiscuous mode [ 409.842882] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 409.852078] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 409.871618] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 409.879060] team0: Port device team_slave_0 added [ 409.885340] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 409.893030] team0: Port device team_slave_1 added [ 409.908320] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 409.914681] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 409.941026] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 409.952889] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 409.959165] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 409.985129] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 409.996145] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 410.004051] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 410.023800] device hsr_slave_0 entered promiscuous mode [ 410.029524] device hsr_slave_1 entered promiscuous mode [ 410.035944] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 410.043198] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 410.106310] bridge0: port 2(bridge_slave_1) entered blocking state [ 410.112771] bridge0: port 2(bridge_slave_1) entered forwarding state [ 410.119550] bridge0: port 1(bridge_slave_0) entered blocking state [ 410.125959] bridge0: port 1(bridge_slave_0) entered forwarding state [ 410.156272] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 410.164291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 410.172726] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 410.182351] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 410.191374] bridge0: port 1(bridge_slave_0) entered disabled state [ 410.198399] bridge0: port 2(bridge_slave_1) entered disabled state [ 410.206111] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 410.217321] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 410.224028] 8021q: adding VLAN 0 to HW filter on device team0 [ 410.233390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 410.241135] bridge0: port 1(bridge_slave_0) entered blocking state [ 410.247469] bridge0: port 1(bridge_slave_0) entered forwarding state [ 410.256984] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 410.265353] bridge0: port 2(bridge_slave_1) entered blocking state [ 410.271758] bridge0: port 2(bridge_slave_1) entered forwarding state [ 410.290822] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 410.299597] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 410.307873] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 410.315894] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 410.326159] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 410.334932] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 410.341219] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 410.353415] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 410.362630] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 410.369266] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 410.379881] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 410.392172] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 410.402387] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 410.437627] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 410.445261] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 410.453156] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 410.463310] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 410.471043] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 410.477966] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 410.487080] device veth0_vlan entered promiscuous mode [ 410.496285] device veth1_vlan entered promiscuous mode [ 410.502602] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 410.511823] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 410.524248] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 410.534133] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 410.541695] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 410.549052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 410.558995] device veth0_macvtap entered promiscuous mode [ 410.565795] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 410.574178] device veth1_macvtap entered promiscuous mode [ 410.583951] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 410.593379] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 410.603354] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 410.611239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 410.619665] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 410.629416] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 410.638212] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 410.747681] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 410.754684] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 410.763683] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 410.781125] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 410.792357] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 410.798803] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 410.806400] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 410.814015] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 411.640853] Bluetooth: hci0: command 0x0409 tx timeout [ 413.720026] Bluetooth: hci0: command 0x041b tx timeout 2021/09/21 23:23:09 executed programs: 4 [ 415.799866] Bluetooth: hci0: command 0x040f tx timeout [ 417.879601] Bluetooth: hci0: command 0x0419 tx timeout 2021/09/21 23:23:14 executed programs: 10 [ 419.959516] Bluetooth: hci0: command 0x0405 tx timeout 2021/09/21 23:23:19 executed programs: 16 2021/09/21 23:23:25 executed programs: 22 2021/09/21 23:23:30 executed programs: 28 2021/09/21 23:23:35 executed programs: 34 [ 441.320423] ieee802154 phy0 wpan0: encryption failed: -22 [ 441.326178] ieee802154 phy1 wpan1: encryption failed: -22 2021/09/21 23:23:40 executed programs: 40 2021/09/21 23:23:45 executed programs: 46 [ 453.478380] ================================================================== [ 453.485814] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 453.492552] Read of size 8 at addr ffff888093c265a0 by task kworker/1:0/8341 [ 453.499712] [ 453.501338] CPU: 1 PID: 8341 Comm: kworker/1:0 Not tainted 4.19.206-syzkaller #0 [ 453.509020] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 453.518488] Workqueue: events l2cap_chan_timeout [ 453.523265] Call Trace: [ 453.525839] dump_stack+0x1fc/0x2ef [ 453.529451] print_address_description.cold+0x54/0x219 [ 453.534713] kasan_report_error.cold+0x8a/0x1b9 [ 453.539415] ? __lock_acquire+0x2cb4/0x3ff0 [ 453.543751] __asan_report_load8_noabort+0x88/0x90 [ 453.548670] ? __lock_acquire+0x2cb4/0x3ff0 [ 453.552971] __lock_acquire+0x2cb4/0x3ff0 [ 453.557098] ? trace_hardirqs_off+0x64/0x200 [ 453.561483] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 453.566601] ? debug_object_assert_init+0x242/0x2e0 [ 453.571604] ? mark_held_locks+0xf0/0xf0 [ 453.575737] ? debug_object_free+0x380/0x380 [ 453.580123] ? mark_held_locks+0xf0/0xf0 [ 453.584269] ? __save_stack_trace+0x9f/0x190 [ 453.588665] ? del_timer+0xc3/0x100 [ 453.592277] lock_acquire+0x170/0x3c0 [ 453.596062] ? lock_sock_nested+0x3b/0x110 [ 453.600282] _raw_spin_lock_bh+0x2f/0x40 [ 453.604363] ? lock_sock_nested+0x3b/0x110 [ 453.608577] lock_sock_nested+0x3b/0x110 [ 453.612622] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 453.617359] ? lock_downgrade+0x720/0x720 [ 453.621491] l2cap_chan_del+0xbc/0xa50 [ 453.625371] ? trace_hardirqs_off+0x64/0x200 [ 453.629769] l2cap_chan_close+0x1b5/0x950 [ 453.633897] ? __set_monitor_timer+0x200/0x200 [ 453.638476] ? check_preemption_disabled+0x41/0x280 [ 453.643480] l2cap_chan_timeout+0x17e/0x2f0 [ 453.647788] process_one_work+0x864/0x1570 [ 453.652005] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 453.656657] worker_thread+0x64c/0x1130 [ 453.660614] ? __kthread_parkme+0x133/0x1e0 [ 453.664914] ? process_one_work+0x1570/0x1570 [ 453.669390] kthread+0x33f/0x460 [ 453.672733] ? kthread_park+0x180/0x180 [ 453.676693] ret_from_fork+0x24/0x30 [ 453.680383] [ 453.682000] Allocated by task 8406: [ 453.685608] __kmalloc+0x15a/0x3c0 [ 453.689146] sk_prot_alloc+0x1e2/0x2d0 [ 453.693097] sk_alloc+0x36/0xec0 [ 453.696442] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 453.701534] l2cap_sock_create+0x123/0x1f0 [ 453.705750] bt_sock_create+0x154/0x2a0 [ 453.709699] __sock_create+0x3d8/0x740 [ 453.713560] __sys_socket+0xef/0x200 [ 453.717336] __x64_sys_socket+0x6f/0xb0 [ 453.721287] do_syscall_64+0xf9/0x620 [ 453.725081] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 453.730254] [ 453.731856] Freed by task 8405: [ 453.735204] kfree+0xcc/0x210 [ 453.738304] __sk_destruct+0x684/0x8a0 [ 453.742169] __sk_free+0x165/0x3b0 [ 453.745691] sk_free+0x3b/0x50 [ 453.748874] l2cap_sock_kill.part.0+0x124/0x150 [ 453.753558] l2cap_sock_release+0x1e6/0x290 [ 453.757859] __sock_release+0xcd/0x2a0 [ 453.761737] sock_close+0x15/0x20 [ 453.765167] __fput+0x2ce/0x890 [ 453.768430] task_work_run+0x148/0x1c0 [ 453.772296] get_signal+0x1b64/0x1f70 [ 453.776077] do_signal+0x8f/0x1670 [ 453.779600] exit_to_usermode_loop+0x204/0x2a0 [ 453.784161] do_syscall_64+0x538/0x620 [ 453.788028] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 453.793190] [ 453.794797] The buggy address belongs to the object at ffff888093c26500 [ 453.794797] which belongs to the cache kmalloc-2048 of size 2048 [ 453.807614] The buggy address is located 160 bytes inside of [ 453.807614] 2048-byte region [ffff888093c26500, ffff888093c26d00) [ 453.819584] The buggy address belongs to the page: [ 453.824497] page:ffffea00024f0980 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 453.834450] flags: 0xfff00000008100(slab|head) [ 453.839016] raw: 00fff00000008100 ffffea00024f4108 ffffea00024f5688 ffff88813bff0c40 [ 453.846877] raw: 0000000000000000 ffff888093c26500 0000000100000003 0000000000000000 [ 453.854735] page dumped because: kasan: bad access detected [ 453.860418] [ 453.862022] Memory state around the buggy address: [ 453.866938] ffff888093c26480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 453.874283] ffff888093c26500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.881637] >ffff888093c26580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.888971] ^ [ 453.893358] ffff888093c26600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.900699] ffff888093c26680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.908047] ================================================================== [ 453.915381] Disabling lock debugging due to kernel taint [ 453.920808] Kernel panic - not syncing: panic_on_warn set ... [ 453.920808] [ 453.928154] CPU: 1 PID: 8341 Comm: kworker/1:0 Tainted: G B 4.19.206-syzkaller #0 [ 453.937050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 453.946391] Workqueue: events l2cap_chan_timeout [ 453.951129] Call Trace: [ 453.953703] dump_stack+0x1fc/0x2ef [ 453.957316] panic+0x26a/0x50e [ 453.960494] ? __warn_printk+0xf3/0xf3 [ 453.964364] ? lock_downgrade+0x720/0x720 [ 453.968493] ? print_shadow_for_address+0xb8/0x114 [ 453.973409] ? trace_hardirqs_off+0x64/0x200 [ 453.977803] kasan_end_report+0x43/0x49 [ 453.981759] kasan_report_error.cold+0xa7/0x1b9 [ 453.986420] ? __lock_acquire+0x2cb4/0x3ff0 [ 453.990722] __asan_report_load8_noabort+0x88/0x90 [ 453.995638] ? __lock_acquire+0x2cb4/0x3ff0 [ 453.999941] __lock_acquire+0x2cb4/0x3ff0 [ 454.004071] ? trace_hardirqs_off+0x64/0x200 [ 454.008462] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 454.013627] ? debug_object_assert_init+0x242/0x2e0 [ 454.018707] ? mark_held_locks+0xf0/0xf0 [ 454.022756] ? debug_object_free+0x380/0x380 [ 454.027143] ? mark_held_locks+0xf0/0xf0 [ 454.031182] ? __save_stack_trace+0x9f/0x190 [ 454.035570] ? del_timer+0xc3/0x100 [ 454.039188] lock_acquire+0x170/0x3c0 [ 454.042974] ? lock_sock_nested+0x3b/0x110 [ 454.047190] _raw_spin_lock_bh+0x2f/0x40 [ 454.051259] ? lock_sock_nested+0x3b/0x110 [ 454.055471] lock_sock_nested+0x3b/0x110 [ 454.059511] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 454.064080] ? lock_downgrade+0x720/0x720 [ 454.068207] l2cap_chan_del+0xbc/0xa50 [ 454.072072] ? trace_hardirqs_off+0x64/0x200 [ 454.076457] l2cap_chan_close+0x1b5/0x950 [ 454.080586] ? __set_monitor_timer+0x200/0x200 [ 454.085153] ? check_preemption_disabled+0x41/0x280 [ 454.090161] l2cap_chan_timeout+0x17e/0x2f0 [ 454.094460] process_one_work+0x864/0x1570 [ 454.098681] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 454.103337] worker_thread+0x64c/0x1130 [ 454.107290] ? __kthread_parkme+0x133/0x1e0 [ 454.111590] ? process_one_work+0x1570/0x1570 [ 454.116062] kthread+0x33f/0x460 [ 454.119406] ? kthread_park+0x180/0x180 [ 454.123355] ret_from_fork+0x24/0x30 [ 454.127322] Kernel Offset: disabled [ 454.131027] Rebooting in 86400 seconds..