Warning: Permanently added '10.128.0.181' (ECDSA) to the list of known hosts. 2021/10/19 04:05:53 parsed 1 programs 2021/10/19 04:05:53 executed programs: 0 syzkaller login: [ 410.487031] IPVS: ftp: loaded support on port[0] = 21 [ 410.579150] chnl_net:caif_netlink_parms(): no params data found [ 410.709469] bridge0: port 1(bridge_slave_0) entered blocking state [ 410.716115] bridge0: port 1(bridge_slave_0) entered disabled state [ 410.724094] device bridge_slave_0 entered promiscuous mode [ 410.732024] bridge0: port 2(bridge_slave_1) entered blocking state [ 410.738441] bridge0: port 2(bridge_slave_1) entered disabled state [ 410.746669] device bridge_slave_1 entered promiscuous mode [ 410.765061] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 410.773759] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 410.792143] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 410.799951] team0: Port device team_slave_0 added [ 410.805380] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 410.813220] team0: Port device team_slave_1 added [ 410.828615] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 410.834911] 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. [ 410.860207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 410.872262] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 410.878492] 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. [ 410.903785] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 410.914628] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 410.922343] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 410.942243] device hsr_slave_0 entered promiscuous mode [ 410.948076] device hsr_slave_1 entered promiscuous mode [ 410.954583] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 410.961946] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 411.025914] bridge0: port 2(bridge_slave_1) entered blocking state [ 411.032345] bridge0: port 2(bridge_slave_1) entered forwarding state [ 411.039102] bridge0: port 1(bridge_slave_0) entered blocking state [ 411.045510] bridge0: port 1(bridge_slave_0) entered forwarding state [ 411.075639] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 411.083083] 8021q: adding VLAN 0 to HW filter on device bond0 [ 411.092449] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 411.102120] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 411.110859] bridge0: port 1(bridge_slave_0) entered disabled state [ 411.117970] bridge0: port 2(bridge_slave_1) entered disabled state [ 411.125676] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 411.137989] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 411.144474] 8021q: adding VLAN 0 to HW filter on device team0 [ 411.154155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 411.162202] bridge0: port 1(bridge_slave_0) entered blocking state [ 411.168561] bridge0: port 1(bridge_slave_0) entered forwarding state [ 411.190825] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 411.198627] bridge0: port 2(bridge_slave_1) entered blocking state [ 411.205040] bridge0: port 2(bridge_slave_1) entered forwarding state [ 411.213368] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 411.222155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 411.229919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 411.237314] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 411.245310] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 411.254494] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 411.260603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 411.273307] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 411.280950] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 411.287716] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 411.301898] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 411.313687] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 411.323411] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 411.356606] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 411.364123] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 411.371880] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 411.381691] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 411.389208] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 411.396904] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 411.406267] device veth0_vlan entered promiscuous mode [ 411.414934] device veth1_vlan entered promiscuous mode [ 411.421549] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 411.430982] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 411.442814] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 411.452473] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 411.460371] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 411.467609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 411.477663] device veth0_macvtap entered promiscuous mode [ 411.484406] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 411.493156] device veth1_macvtap entered promiscuous mode [ 411.503279] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 411.512306] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 411.522846] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 411.530231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 411.538565] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 411.548619] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 411.556079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 411.662047] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 411.668733] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 411.686083] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 411.692003] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 411.699087] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 411.704321] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 411.713442] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 411.721082] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 412.510091] Bluetooth: hci0: command 0x0409 tx timeout [ 414.599457] Bluetooth: hci0: command 0x041b tx timeout 2021/10/19 04:05:59 executed programs: 4 [ 416.669418] Bluetooth: hci0: command 0x040f tx timeout [ 418.748971] Bluetooth: hci0: command 0x0419 tx timeout 2021/10/19 04:06:04 executed programs: 10 [ 420.838825] Bluetooth: hci0: command 0x0405 tx timeout 2021/10/19 04:06:09 executed programs: 16 2021/10/19 04:06:14 executed programs: 22 2021/10/19 04:06:19 executed programs: 28 2021/10/19 04:06:24 executed programs: 34 [ 441.149781] ieee802154 phy0 wpan0: encryption failed: -22 [ 441.155480] ieee802154 phy1 wpan1: encryption failed: -22 2021/10/19 04:06:30 executed programs: 40 2021/10/19 04:06:35 executed programs: 46 2021/10/19 04:06:40 executed programs: 52 2021/10/19 04:06:45 executed programs: 58 2021/10/19 04:06:50 executed programs: 64 [ 468.026997] ================================================================== [ 468.034371] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 468.041013] Read of size 8 at addr ffff8880943af4a0 by task kworker/0:2/8269 [ 468.048169] [ 468.049778] CPU: 0 PID: 8269 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0 [ 468.057283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 468.066618] Workqueue: events l2cap_chan_timeout [ 468.071346] Call Trace: [ 468.073911] dump_stack+0x1fc/0x2ef [ 468.077528] print_address_description.cold+0x54/0x219 [ 468.082785] kasan_report_error.cold+0x8a/0x1b9 [ 468.087443] ? __lock_acquire+0x2cb4/0x3ff0 [ 468.091759] __asan_report_load8_noabort+0x88/0x90 [ 468.096675] ? __lock_acquire+0x2cb4/0x3ff0 [ 468.101123] __lock_acquire+0x2cb4/0x3ff0 [ 468.105264] ? trace_hardirqs_off+0x64/0x200 [ 468.109655] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 468.114830] ? debug_object_assert_init+0x242/0x2e0 [ 468.119840] ? mark_held_locks+0xf0/0xf0 [ 468.123879] ? debug_object_free+0x380/0x380 [ 468.128272] ? mark_held_locks+0xf0/0xf0 [ 468.132311] ? __save_stack_trace+0x9f/0x190 [ 468.136701] ? ret_from_fork+0x24/0x30 [ 468.140750] ? del_timer+0xc3/0x100 [ 468.144361] lock_acquire+0x170/0x3c0 [ 468.148148] ? lock_sock_nested+0x3b/0x110 [ 468.152373] _raw_spin_lock_bh+0x2f/0x40 [ 468.156414] ? lock_sock_nested+0x3b/0x110 [ 468.160630] lock_sock_nested+0x3b/0x110 [ 468.164671] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 468.169273] ? lock_downgrade+0x720/0x720 [ 468.173399] l2cap_chan_del+0xbc/0xa50 [ 468.177267] ? trace_hardirqs_off+0x64/0x200 [ 468.181673] l2cap_chan_close+0x1b5/0x950 [ 468.185800] ? __set_monitor_timer+0x200/0x200 [ 468.190362] ? check_preemption_disabled+0x41/0x280 [ 468.195355] l2cap_chan_timeout+0x17e/0x2f0 [ 468.199654] process_one_work+0x864/0x1570 [ 468.203877] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 468.208534] worker_thread+0x64c/0x1130 [ 468.212571] ? __kthread_parkme+0x133/0x1e0 [ 468.216888] ? process_one_work+0x1570/0x1570 [ 468.221359] kthread+0x33f/0x460 [ 468.224708] ? kthread_park+0x180/0x180 [ 468.228670] ret_from_fork+0x24/0x30 [ 468.232357] [ 468.233964] Allocated by task 8499: [ 468.237571] __kmalloc+0x15a/0x3c0 [ 468.241109] sk_prot_alloc+0x1e2/0x2d0 [ 468.244975] sk_alloc+0x36/0xec0 [ 468.248349] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 468.253447] l2cap_sock_create+0x123/0x1f0 [ 468.257706] bt_sock_create+0x154/0x2a0 [ 468.261661] __sock_create+0x3d8/0x740 [ 468.265611] __sys_socket+0xef/0x200 [ 468.269303] __x64_sys_socket+0x6f/0xb0 [ 468.273354] do_syscall_64+0xf9/0x620 [ 468.277140] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 468.282303] [ 468.283913] Freed by task 8499: [ 468.287178] kfree+0xcc/0x210 [ 468.290279] __sk_destruct+0x684/0x8a0 [ 468.294145] __sk_free+0x165/0x3b0 [ 468.297762] sk_free+0x3b/0x50 [ 468.300935] l2cap_sock_kill.part.0+0x124/0x150 [ 468.305590] l2cap_sock_release+0x1e6/0x290 [ 468.309896] __sock_release+0xcd/0x2a0 [ 468.313770] sock_close+0x15/0x20 [ 468.317273] __fput+0x2ce/0x890 [ 468.320535] task_work_run+0x148/0x1c0 [ 468.324400] get_signal+0x1b64/0x1f70 [ 468.328285] do_signal+0x8f/0x1670 [ 468.331810] exit_to_usermode_loop+0x204/0x2a0 [ 468.336369] do_syscall_64+0x538/0x620 [ 468.340254] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 468.345438] [ 468.347058] The buggy address belongs to the object at ffff8880943af400 [ 468.347058] which belongs to the cache kmalloc-2048 of size 2048 [ 468.359874] The buggy address is located 160 bytes inside of [ 468.359874] 2048-byte region [ffff8880943af400, ffff8880943afc00) [ 468.371815] The buggy address belongs to the page: [ 468.376748] page:ffffea000250eb80 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 468.386702] flags: 0xfff00000008100(slab|head) [ 468.391267] raw: 00fff00000008100 ffffea0002463088 ffffea0002a43508 ffff88813bff0c40 [ 468.399126] raw: 0000000000000000 ffff8880943ae300 0000000100000003 0000000000000000 [ 468.406996] page dumped because: kasan: bad access detected [ 468.412681] [ 468.414283] Memory state around the buggy address: [ 468.419188] ffff8880943af380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 468.426524] ffff8880943af400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 468.433858] >ffff8880943af480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 468.441207] ^ [ 468.445605] ffff8880943af500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 468.453551] ffff8880943af580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 468.460885] ================================================================== [ 468.468225] Disabling lock debugging due to kernel taint [ 468.473649] Kernel panic - not syncing: panic_on_warn set ... [ 468.473649] [ 468.480987] CPU: 0 PID: 8269 Comm: kworker/0:2 Tainted: G B 4.19.211-syzkaller #0 [ 468.489881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 468.499226] Workqueue: events l2cap_chan_timeout [ 468.504068] Call Trace: [ 468.506643] dump_stack+0x1fc/0x2ef [ 468.510250] panic+0x26a/0x50e [ 468.513519] ? __warn_printk+0xf3/0xf3 [ 468.517402] ? lock_downgrade+0x720/0x720 [ 468.521530] ? print_shadow_for_address+0xb8/0x114 [ 468.526439] ? trace_hardirqs_off+0x64/0x200 [ 468.530826] kasan_end_report+0x43/0x49 [ 468.534781] kasan_report_error.cold+0xa7/0x1b9 [ 468.539429] ? __lock_acquire+0x2cb4/0x3ff0 [ 468.543730] __asan_report_load8_noabort+0x88/0x90 [ 468.548669] ? __lock_acquire+0x2cb4/0x3ff0 [ 468.552991] __lock_acquire+0x2cb4/0x3ff0 [ 468.557118] ? trace_hardirqs_off+0x64/0x200 [ 468.561532] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 468.566626] ? debug_object_assert_init+0x242/0x2e0 [ 468.571620] ? mark_held_locks+0xf0/0xf0 [ 468.575656] ? debug_object_free+0x380/0x380 [ 468.580045] ? mark_held_locks+0xf0/0xf0 [ 468.584083] ? __save_stack_trace+0x9f/0x190 [ 468.588469] ? ret_from_fork+0x24/0x30 [ 468.592352] ? del_timer+0xc3/0x100 [ 468.595979] lock_acquire+0x170/0x3c0 [ 468.599762] ? lock_sock_nested+0x3b/0x110 [ 468.603974] _raw_spin_lock_bh+0x2f/0x40 [ 468.608445] ? lock_sock_nested+0x3b/0x110 [ 468.612653] lock_sock_nested+0x3b/0x110 [ 468.616690] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 468.621247] ? lock_downgrade+0x720/0x720 [ 468.625383] l2cap_chan_del+0xbc/0xa50 [ 468.629250] ? trace_hardirqs_off+0x64/0x200 [ 468.633635] l2cap_chan_close+0x1b5/0x950 [ 468.637760] ? __set_monitor_timer+0x200/0x200 [ 468.642322] ? check_preemption_disabled+0x41/0x280 [ 468.647315] l2cap_chan_timeout+0x17e/0x2f0 [ 468.651618] process_one_work+0x864/0x1570 [ 468.656265] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 468.660913] worker_thread+0x64c/0x1130 [ 468.664869] ? __kthread_parkme+0x133/0x1e0 [ 468.669167] ? process_one_work+0x1570/0x1570 [ 468.673643] kthread+0x33f/0x460 [ 468.676997] ? kthread_park+0x180/0x180 [ 468.680964] ret_from_fork+0x24/0x30 [ 468.684930] Kernel Offset: disabled [ 468.688537] Rebooting in 86400 seconds..