Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. 2021/10/01 21:56:14 parsed 1 programs 2021/10/01 21:56:15 executed programs: 0 syzkaller login: [ 413.668125] IPVS: ftp: loaded support on port[0] = 21 [ 413.770070] chnl_net:caif_netlink_parms(): no params data found [ 413.861499] bridge0: port 1(bridge_slave_0) entered blocking state [ 413.868189] bridge0: port 1(bridge_slave_0) entered disabled state [ 413.876109] device bridge_slave_0 entered promiscuous mode [ 413.884141] bridge0: port 2(bridge_slave_1) entered blocking state [ 413.890901] bridge0: port 2(bridge_slave_1) entered disabled state [ 413.897850] device bridge_slave_1 entered promiscuous mode [ 413.915213] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 413.923994] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 413.942636] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 413.950010] team0: Port device team_slave_0 added [ 413.955372] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 413.963110] team0: Port device team_slave_1 added [ 413.977943] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 413.984235] 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. [ 414.009467] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 414.021307] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 414.027529] 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. [ 414.052759] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 414.063372] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 414.070982] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 414.090127] device hsr_slave_0 entered promiscuous mode [ 414.095792] device hsr_slave_1 entered promiscuous mode [ 414.102524] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 414.110281] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 414.174365] bridge0: port 2(bridge_slave_1) entered blocking state [ 414.180795] bridge0: port 2(bridge_slave_1) entered forwarding state [ 414.187495] bridge0: port 1(bridge_slave_0) entered blocking state [ 414.193887] bridge0: port 1(bridge_slave_0) entered forwarding state [ 414.225101] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 414.232872] 8021q: adding VLAN 0 to HW filter on device bond0 [ 414.241484] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 414.250387] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 414.258356] bridge0: port 1(bridge_slave_0) entered disabled state [ 414.265605] bridge0: port 2(bridge_slave_1) entered disabled state [ 414.273447] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 414.283728] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 414.290398] 8021q: adding VLAN 0 to HW filter on device team0 [ 414.299005] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 414.307009] bridge0: port 1(bridge_slave_0) entered blocking state [ 414.313415] bridge0: port 1(bridge_slave_0) entered forwarding state [ 414.323178] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 414.330794] bridge0: port 2(bridge_slave_1) entered blocking state [ 414.337109] bridge0: port 2(bridge_slave_1) entered forwarding state [ 414.352156] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 414.367076] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 414.377099] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 414.388473] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 414.395378] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 414.402668] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 414.410885] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 414.418440] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 414.426138] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 414.437952] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 414.446145] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 414.452912] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 414.463877] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 414.475739] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 414.485283] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 414.516885] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 414.524609] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 414.532215] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 414.542635] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 414.550320] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 414.557097] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 414.566222] device veth0_vlan entered promiscuous mode [ 414.575889] device veth1_vlan entered promiscuous mode [ 414.582059] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 414.591018] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 414.602542] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 414.611744] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 414.619254] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 414.627736] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 414.636741] device veth0_macvtap entered promiscuous mode [ 414.643953] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 414.652240] device veth1_macvtap entered promiscuous mode [ 414.661167] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 414.670692] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 414.681972] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 414.688589] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 414.697103] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 414.707030] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 414.714126] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 414.820338] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 414.827397] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 414.842423] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 414.848498] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 414.856927] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 414.866877] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 414.874353] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 414.881917] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 415.700377] Bluetooth: hci0: command 0x0409 tx timeout [ 417.789450] Bluetooth: hci0: command 0x041b tx timeout 2021/10/01 21:56:20 executed programs: 4 [ 419.859602] Bluetooth: hci0: command 0x040f tx timeout [ 421.939041] Bluetooth: hci0: command 0x0419 tx timeout 2021/10/01 21:56:25 executed programs: 10 [ 424.018930] Bluetooth: hci0: command 0x0405 tx timeout 2021/10/01 21:56:30 executed programs: 16 2021/10/01 21:56:35 executed programs: 22 2021/10/01 21:56:41 executed programs: 28 [ 441.229467] ieee802154 phy0 wpan0: encryption failed: -22 [ 441.235135] ieee802154 phy1 wpan1: encryption failed: -22 2021/10/01 21:56:46 executed programs: 34 2021/10/01 21:56:51 executed programs: 40 2021/10/01 21:56:56 executed programs: 46 2021/10/01 21:57:01 executed programs: 52 2021/10/01 21:57:06 executed programs: 58 2021/10/01 21:57:11 executed programs: 64 [ 473.217006] ================================================================== [ 473.224396] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 473.231055] Read of size 8 at addr ffff8880a9232de0 by task kworker/0:0/8258 [ 473.238228] [ 473.239857] CPU: 0 PID: 8258 Comm: kworker/0:0 Not tainted 4.19.208-syzkaller #0 [ 473.247364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 473.256704] Workqueue: events l2cap_chan_timeout [ 473.261444] Call Trace: [ 473.264012] dump_stack+0x1fc/0x2ef [ 473.267623] print_address_description.cold+0x54/0x219 [ 473.272877] kasan_report_error.cold+0x8a/0x1b9 [ 473.277531] ? __lock_acquire+0x2cb4/0x3ff0 [ 473.281830] __asan_report_load8_noabort+0x88/0x90 [ 473.286734] ? __lock_acquire+0x2cb4/0x3ff0 [ 473.291042] __lock_acquire+0x2cb4/0x3ff0 [ 473.295172] ? trace_hardirqs_off+0x64/0x200 [ 473.299557] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 473.304637] ? debug_object_assert_init+0x242/0x2e0 [ 473.309639] ? mark_held_locks+0xf0/0xf0 [ 473.313673] ? debug_object_free+0x380/0x380 [ 473.318071] ? mark_held_locks+0xf0/0xf0 [ 473.322107] ? __save_stack_trace+0x9f/0x190 [ 473.326493] ? ret_from_fork+0x24/0x30 [ 473.330375] ? del_timer+0xc3/0x100 [ 473.333985] lock_acquire+0x170/0x3c0 [ 473.337769] ? lock_sock_nested+0x3b/0x110 [ 473.341979] _raw_spin_lock_bh+0x2f/0x40 [ 473.346016] ? lock_sock_nested+0x3b/0x110 [ 473.350231] lock_sock_nested+0x3b/0x110 [ 473.354297] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 473.358878] ? lock_downgrade+0x720/0x720 [ 473.363004] l2cap_chan_del+0xbc/0xa50 [ 473.366872] ? trace_hardirqs_off+0x64/0x200 [ 473.371265] l2cap_chan_close+0x1b5/0x950 [ 473.375403] ? __set_monitor_timer+0x200/0x200 [ 473.379977] ? check_preemption_disabled+0x41/0x280 [ 473.384980] l2cap_chan_timeout+0x17e/0x2f0 [ 473.389283] process_one_work+0x864/0x1570 [ 473.393496] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 473.398142] worker_thread+0x64c/0x1130 [ 473.402096] ? __kthread_parkme+0x133/0x1e0 [ 473.406401] ? process_one_work+0x1570/0x1570 [ 473.410880] kthread+0x33f/0x460 [ 473.414224] ? kthread_park+0x180/0x180 [ 473.418175] ret_from_fork+0x24/0x30 [ 473.421863] [ 473.423466] Allocated by task 8498: [ 473.427073] __kmalloc+0x15a/0x3c0 [ 473.430590] sk_prot_alloc+0x1e2/0x2d0 [ 473.434453] sk_alloc+0x36/0xec0 [ 473.437798] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 473.442876] l2cap_sock_create+0x123/0x1f0 [ 473.447087] bt_sock_create+0x154/0x2a0 [ 473.451036] __sock_create+0x3d8/0x740 [ 473.454897] __sys_socket+0xef/0x200 [ 473.458585] __x64_sys_socket+0x6f/0xb0 [ 473.462537] do_syscall_64+0xf9/0x620 [ 473.466315] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 473.471471] [ 473.473073] Freed by task 8498: [ 473.476336] kfree+0xcc/0x210 [ 473.479416] __sk_destruct+0x684/0x8a0 [ 473.483292] __sk_free+0x165/0x3b0 [ 473.486807] sk_free+0x3b/0x50 [ 473.489978] l2cap_sock_kill.part.0+0x124/0x150 [ 473.494622] l2cap_sock_release+0x1e6/0x290 [ 473.498918] __sock_release+0xcd/0x2a0 [ 473.502780] sock_close+0x15/0x20 [ 473.506223] __fput+0x2ce/0x890 [ 473.509522] task_work_run+0x148/0x1c0 [ 473.513392] get_signal+0x1b64/0x1f70 [ 473.517175] do_signal+0x8f/0x1670 [ 473.520690] exit_to_usermode_loop+0x204/0x2a0 [ 473.525245] do_syscall_64+0x538/0x620 [ 473.529108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 473.534273] [ 473.535879] The buggy address belongs to the object at ffff8880a9232d40 [ 473.535879] which belongs to the cache kmalloc-2048 of size 2048 [ 473.548686] The buggy address is located 160 bytes inside of [ 473.548686] 2048-byte region [ffff8880a9232d40, ffff8880a9233540) [ 473.560617] The buggy address belongs to the page: [ 473.565733] page:ffffea0002a48c80 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 473.575689] flags: 0xfff00000008100(slab|head) [ 473.580256] raw: 00fff00000008100 ffffea00023e0008 ffffea0002b0ef08 ffff88813bff0c40 [ 473.588118] raw: 0000000000000000 ffff8880a92324c0 0000000100000003 0000000000000000 [ 473.595975] page dumped because: kasan: bad access detected [ 473.601656] [ 473.603265] Memory state around the buggy address: [ 473.608171] ffff8880a9232c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 473.615505] ffff8880a9232d00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 473.622841] >ffff8880a9232d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 473.630200] ^ [ 473.636665] ffff8880a9232e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 473.644000] ffff8880a9232e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 473.651330] ================================================================== [ 473.658662] Disabling lock debugging due to kernel taint [ 473.664092] Kernel panic - not syncing: panic_on_warn set ... [ 473.664092] [ 473.671460] CPU: 0 PID: 8258 Comm: kworker/0:0 Tainted: G B 4.19.208-syzkaller #0 [ 473.680361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 473.689789] Workqueue: events l2cap_chan_timeout [ 473.694518] Call Trace: [ 473.697086] dump_stack+0x1fc/0x2ef [ 473.700694] panic+0x26a/0x50e [ 473.703862] ? __warn_printk+0xf3/0xf3 [ 473.707773] ? lock_downgrade+0x720/0x720 [ 473.711899] ? print_shadow_for_address+0xb8/0x114 [ 473.716805] ? trace_hardirqs_off+0x64/0x200 [ 473.721190] kasan_end_report+0x43/0x49 [ 473.725157] kasan_report_error.cold+0xa7/0x1b9 [ 473.729814] ? __lock_acquire+0x2cb4/0x3ff0 [ 473.734131] __asan_report_load8_noabort+0x88/0x90 [ 473.739037] ? __lock_acquire+0x2cb4/0x3ff0 [ 473.743335] __lock_acquire+0x2cb4/0x3ff0 [ 473.747466] ? trace_hardirqs_off+0x64/0x200 [ 473.751859] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 473.756939] ? debug_object_assert_init+0x242/0x2e0 [ 473.761931] ? mark_held_locks+0xf0/0xf0 [ 473.765966] ? debug_object_free+0x380/0x380 [ 473.770350] ? mark_held_locks+0xf0/0xf0 [ 473.774384] ? __save_stack_trace+0x9f/0x190 [ 473.778767] ? ret_from_fork+0x24/0x30 [ 473.782633] ? del_timer+0xc3/0x100 [ 473.786238] lock_acquire+0x170/0x3c0 [ 473.790013] ? lock_sock_nested+0x3b/0x110 [ 473.794226] _raw_spin_lock_bh+0x2f/0x40 [ 473.798265] ? lock_sock_nested+0x3b/0x110 [ 473.802477] lock_sock_nested+0x3b/0x110 [ 473.806521] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 473.811079] ? lock_downgrade+0x720/0x720 [ 473.815203] l2cap_chan_del+0xbc/0xa50 [ 473.819067] ? trace_hardirqs_off+0x64/0x200 [ 473.823451] l2cap_chan_close+0x1b5/0x950 [ 473.827574] ? __set_monitor_timer+0x200/0x200 [ 473.832136] ? check_preemption_disabled+0x41/0x280 [ 473.837129] l2cap_chan_timeout+0x17e/0x2f0 [ 473.841516] process_one_work+0x864/0x1570 [ 473.845737] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 473.850383] worker_thread+0x64c/0x1130 [ 473.854596] ? __kthread_parkme+0x133/0x1e0 [ 473.858891] ? process_one_work+0x1570/0x1570 [ 473.863361] kthread+0x33f/0x460 [ 473.866710] ? kthread_park+0x180/0x180 [ 473.870660] ret_from_fork+0x24/0x30 [ 473.874591] Kernel Offset: disabled [ 473.878198] Rebooting in 86400 seconds..