Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts. 2021/05/27 12:43:18 parsed 1 programs 2021/05/27 12:43:18 executed programs: 0 syzkaller login: [ 414.795560] IPVS: ftp: loaded support on port[0] = 21 [ 414.880123] chnl_net:caif_netlink_parms(): no params data found [ 415.022050] bridge0: port 1(bridge_slave_0) entered blocking state [ 415.028608] bridge0: port 1(bridge_slave_0) entered disabled state [ 415.035945] device bridge_slave_0 entered promiscuous mode [ 415.043477] bridge0: port 2(bridge_slave_1) entered blocking state [ 415.049825] bridge0: port 2(bridge_slave_1) entered disabled state [ 415.057113] device bridge_slave_1 entered promiscuous mode [ 415.073785] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 415.082658] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 415.099982] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 415.107359] team0: Port device team_slave_0 added [ 415.113363] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 415.120504] team0: Port device team_slave_1 added [ 415.134554] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 415.140916] 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. [ 415.166806] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 415.178282] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 415.184915] 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. [ 415.210565] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 415.221547] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 415.229410] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 415.247123] device hsr_slave_0 entered promiscuous mode [ 415.252774] device hsr_slave_1 entered promiscuous mode [ 415.258564] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 415.265669] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 415.323132] bridge0: port 2(bridge_slave_1) entered blocking state [ 415.329626] bridge0: port 2(bridge_slave_1) entered forwarding state [ 415.336480] bridge0: port 1(bridge_slave_0) entered blocking state [ 415.342890] bridge0: port 1(bridge_slave_0) entered forwarding state [ 415.372830] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 415.378879] 8021q: adding VLAN 0 to HW filter on device bond0 [ 415.387714] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 415.396150] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 415.404359] bridge0: port 1(bridge_slave_0) entered disabled state [ 415.411234] bridge0: port 2(bridge_slave_1) entered disabled state [ 415.418546] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 415.428729] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 415.435372] 8021q: adding VLAN 0 to HW filter on device team0 [ 415.443791] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 415.451344] bridge0: port 1(bridge_slave_0) entered blocking state [ 415.457738] bridge0: port 1(bridge_slave_0) entered forwarding state [ 415.467404] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 415.475178] bridge0: port 2(bridge_slave_1) entered blocking state [ 415.481543] bridge0: port 2(bridge_slave_1) entered forwarding state [ 415.495875] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 415.503595] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 415.514053] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 415.526350] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 415.536924] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 415.547704] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 415.555511] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 415.563248] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 415.570769] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 415.582261] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 415.592889] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 415.599396] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 415.606566] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 415.618750] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 415.628177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 415.654391] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 415.662650] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 415.669021] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 415.677665] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 415.685717] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 415.692740] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 415.701348] device veth0_vlan entered promiscuous mode [ 415.709670] device veth1_vlan entered promiscuous mode [ 415.715846] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 415.724387] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 415.735094] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 415.743978] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 415.751069] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 415.758654] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 415.767244] device veth0_macvtap entered promiscuous mode [ 415.773588] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 415.781795] device veth1_macvtap entered promiscuous mode [ 415.789583] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 415.798225] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 415.807921] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 415.814899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 415.823088] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 415.833403] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 415.842614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 415.936293] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 415.943743] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 415.956967] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 415.961801] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 415.973997] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 415.981271] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 415.989474] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 415.997393] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 416.823086] Bluetooth: hci0: command 0x0409 tx timeout [ 418.901565] Bluetooth: hci0: command 0x041b tx timeout 2021/05/27 12:43:24 executed programs: 4 [ 420.981385] Bluetooth: hci0: command 0x040f tx timeout [ 423.071096] Bluetooth: hci0: command 0x0419 tx timeout 2021/05/27 12:43:29 executed programs: 10 [ 425.141022] Bluetooth: hci0: command 0x0405 tx timeout 2021/05/27 12:43:34 executed programs: 16 2021/05/27 12:43:39 executed programs: 22 2021/05/27 12:43:44 executed programs: 28 [ 440.821932] ieee802154 phy0 wpan0: encryption failed: -22 [ 440.827617] ieee802154 phy1 wpan1: encryption failed: -22 2021/05/27 12:43:49 executed programs: 34 2021/05/27 12:43:54 executed programs: 40 2021/05/27 12:43:59 executed programs: 46 [ 458.740249] ================================================================== [ 458.747633] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 458.754272] Read of size 8 at addr ffff8880ab63a120 by task kworker/0:1/14 [ 458.761263] [ 458.762876] CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 4.19.192-syzkaller #0 [ 458.770206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 458.779555] Workqueue: events l2cap_chan_timeout [ 458.784293] Call Trace: [ 458.786854] dump_stack+0x1fc/0x2ef [ 458.790459] print_address_description.cold+0x54/0x219 [ 458.795709] kasan_report_error.cold+0x8a/0x1b9 [ 458.800358] ? __lock_acquire+0x2cb4/0x3ff0 [ 458.804657] __asan_report_load8_noabort+0x88/0x90 [ 458.809564] ? __lock_acquire+0x2cb4/0x3ff0 [ 458.813864] __lock_acquire+0x2cb4/0x3ff0 [ 458.817987] ? trace_hardirqs_off+0x64/0x200 [ 458.822375] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 458.827451] ? debug_object_assert_init+0x242/0x2e0 [ 458.832437] ? mark_held_locks+0xf0/0xf0 [ 458.836468] ? debug_object_free+0x380/0x380 [ 458.840847] ? mark_held_locks+0xf0/0xf0 [ 458.844884] ? __save_stack_trace+0x9f/0x190 [ 458.849268] ? del_timer+0xc3/0x100 [ 458.852869] lock_acquire+0x170/0x3c0 [ 458.856644] ? lock_sock_nested+0x3b/0x110 [ 458.860854] _raw_spin_lock_bh+0x2f/0x40 [ 458.864887] ? lock_sock_nested+0x3b/0x110 [ 458.869090] lock_sock_nested+0x3b/0x110 [ 458.873125] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 458.877679] ? lock_downgrade+0x720/0x720 [ 458.881798] l2cap_chan_del+0xbc/0xa50 [ 458.885658] ? trace_hardirqs_off+0x64/0x200 [ 458.890041] l2cap_chan_close+0x1b5/0x950 [ 458.894163] ? __set_monitor_timer+0x200/0x200 [ 458.898720] ? check_preemption_disabled+0x41/0x280 [ 458.903709] l2cap_chan_timeout+0x17e/0x2f0 [ 458.908091] process_one_work+0x864/0x1570 [ 458.912299] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 458.916942] worker_thread+0x64c/0x1130 [ 458.920890] ? __kthread_parkme+0x133/0x1e0 [ 458.925182] ? process_one_work+0x1570/0x1570 [ 458.929649] kthread+0x33f/0x460 [ 458.932990] ? kthread_park+0x180/0x180 [ 458.936933] ret_from_fork+0x24/0x30 [ 458.940630] [ 458.942239] Allocated by task 8371: [ 458.945841] __kmalloc+0x15a/0x3c0 [ 458.949351] sk_prot_alloc+0x1e2/0x2d0 [ 458.953207] sk_alloc+0x36/0xec0 [ 458.956544] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 458.961618] l2cap_sock_create+0x123/0x1f0 [ 458.965833] bt_sock_create+0x154/0x2a0 [ 458.969779] __sock_create+0x3d8/0x740 [ 458.973637] __sys_socket+0xef/0x200 [ 458.977320] __x64_sys_socket+0x6f/0xb0 [ 458.981272] do_syscall_64+0xf9/0x620 [ 458.985048] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 458.990209] [ 458.991824] Freed by task 8371: [ 458.995077] kfree+0xcc/0x210 [ 458.998155] __sk_destruct+0x684/0x8a0 [ 459.002012] __sk_free+0x165/0x3b0 [ 459.005521] sk_free+0x3b/0x50 [ 459.008686] l2cap_sock_kill.part.0+0x124/0x150 [ 459.013325] l2cap_sock_release+0x1e6/0x290 [ 459.017617] __sock_release+0xcd/0x2a0 [ 459.021475] sock_close+0x15/0x20 [ 459.024899] __fput+0x2ce/0x890 [ 459.028166] task_work_run+0x148/0x1c0 [ 459.032024] get_signal+0x1b64/0x1f70 [ 459.035793] do_signal+0x8f/0x1670 [ 459.039303] exit_to_usermode_loop+0x204/0x2a0 [ 459.043856] do_syscall_64+0x538/0x620 [ 459.047715] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 459.052873] [ 459.054484] The buggy address belongs to the object at ffff8880ab63a080 [ 459.054484] which belongs to the cache kmalloc-2048 of size 2048 [ 459.067282] The buggy address is located 160 bytes inside of [ 459.067282] 2048-byte region [ffff8880ab63a080, ffff8880ab63a880) [ 459.079223] The buggy address belongs to the page: [ 459.084130] page:ffffea0002ad8e80 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 459.094066] flags: 0xfff00000008100(slab|head) [ 459.098618] raw: 00fff00000008100 ffffea0002504908 ffffea0002cf4788 ffff88813bff0c40 [ 459.106467] raw: 0000000000000000 ffff8880ab63a080 0000000100000003 0000000000000000 [ 459.114312] page dumped because: kasan: bad access detected [ 459.119990] [ 459.121588] Memory state around the buggy address: [ 459.126484] ffff8880ab63a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 459.133815] ffff8880ab63a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 459.141143] >ffff8880ab63a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 459.148469] ^ [ 459.152847] ffff8880ab63a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 459.160180] ffff8880ab63a200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 459.167511] ================================================================== [ 459.174846] Disabling lock debugging due to kernel taint [ 459.180271] Kernel panic - not syncing: panic_on_warn set ... [ 459.180271] [ 459.187607] CPU: 0 PID: 14 Comm: kworker/0:1 Tainted: G B 4.19.192-syzkaller #0 [ 459.196321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 459.205651] Workqueue: events l2cap_chan_timeout [ 459.210378] Call Trace: [ 459.212946] dump_stack+0x1fc/0x2ef [ 459.216551] panic+0x26a/0x50e [ 459.219718] ? __warn_printk+0xf3/0xf3 [ 459.223581] ? lock_downgrade+0x720/0x720 [ 459.227699] ? print_shadow_for_address+0xb8/0x114 [ 459.232602] ? trace_hardirqs_off+0x64/0x200 [ 459.236982] kasan_end_report+0x43/0x49 [ 459.240927] kasan_report_error.cold+0xa7/0x1b9 [ 459.245571] ? __lock_acquire+0x2cb4/0x3ff0 [ 459.249867] __asan_report_load8_noabort+0x88/0x90 [ 459.254771] ? __lock_acquire+0x2cb4/0x3ff0 [ 459.259067] __lock_acquire+0x2cb4/0x3ff0 [ 459.263189] ? trace_hardirqs_off+0x64/0x200 [ 459.267574] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 459.272649] ? debug_object_assert_init+0x242/0x2e0 [ 459.277724] ? mark_held_locks+0xf0/0xf0 [ 459.281762] ? debug_object_free+0x380/0x380 [ 459.286144] ? mark_held_locks+0xf0/0xf0 [ 459.290182] ? __save_stack_trace+0x9f/0x190 [ 459.294572] ? del_timer+0xc3/0x100 [ 459.298168] lock_acquire+0x170/0x3c0 [ 459.301943] ? lock_sock_nested+0x3b/0x110 [ 459.306152] _raw_spin_lock_bh+0x2f/0x40 [ 459.310189] ? lock_sock_nested+0x3b/0x110 [ 459.314399] lock_sock_nested+0x3b/0x110 [ 459.318433] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 459.322987] ? lock_downgrade+0x720/0x720 [ 459.327107] l2cap_chan_del+0xbc/0xa50 [ 459.330968] ? trace_hardirqs_off+0x64/0x200 [ 459.335350] l2cap_chan_close+0x1b5/0x950 [ 459.339514] ? __set_monitor_timer+0x200/0x200 [ 459.344084] ? check_preemption_disabled+0x41/0x280 [ 459.349070] l2cap_chan_timeout+0x17e/0x2f0 [ 459.353363] process_one_work+0x864/0x1570 [ 459.357569] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 459.362223] worker_thread+0x64c/0x1130 [ 459.366172] ? __kthread_parkme+0x133/0x1e0 [ 459.370468] ? process_one_work+0x1570/0x1570 [ 459.374937] kthread+0x33f/0x460 [ 459.378273] ? kthread_park+0x180/0x180 [ 459.382219] ret_from_fork+0x24/0x30 [ 459.386478] Kernel Offset: disabled [ 459.390087] Rebooting in 86400 seconds..