Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. 2021/02/08 13:07:51 parsed 1 programs 2021/02/08 13:07:51 executed programs: 0 syzkaller login: [ 1572.257973] IPVS: ftp: loaded support on port[0] = 21 [ 1572.353133] chnl_net:caif_netlink_parms(): no params data found [ 1572.437928] bridge0: port 1(bridge_slave_0) entered blocking state [ 1572.444628] bridge0: port 1(bridge_slave_0) entered disabled state [ 1572.452038] device bridge_slave_0 entered promiscuous mode [ 1572.458920] bridge0: port 2(bridge_slave_1) entered blocking state [ 1572.465378] bridge0: port 2(bridge_slave_1) entered disabled state [ 1572.472352] device bridge_slave_1 entered promiscuous mode [ 1572.488868] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1572.497404] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1572.515873] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1572.523272] team0: Port device team_slave_0 added [ 1572.528734] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1572.536303] team0: Port device team_slave_1 added [ 1572.551799] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1572.558049] 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. [ 1572.583345] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1572.594702] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1572.600995] 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. [ 1572.626250] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1572.637162] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1572.644789] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1572.663911] device hsr_slave_0 entered promiscuous mode [ 1572.669623] device hsr_slave_1 entered promiscuous mode [ 1572.675966] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1572.683148] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1572.746073] bridge0: port 2(bridge_slave_1) entered blocking state [ 1572.752504] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1572.759217] bridge0: port 1(bridge_slave_0) entered blocking state [ 1572.765613] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1572.796723] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1572.803886] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1572.812995] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1572.822604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1572.831782] bridge0: port 1(bridge_slave_0) entered disabled state [ 1572.838713] bridge0: port 2(bridge_slave_1) entered disabled state [ 1572.846292] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1572.856278] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1572.862652] 8021q: adding VLAN 0 to HW filter on device team0 [ 1572.871987] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1572.879693] bridge0: port 1(bridge_slave_0) entered blocking state [ 1572.886091] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1572.895511] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1572.903561] bridge0: port 2(bridge_slave_1) entered blocking state [ 1572.909886] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1572.925026] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1572.933119] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1572.948544] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1572.958487] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1572.969156] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1572.976220] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1572.984042] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1572.992104] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1572.999501] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1573.012123] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1573.019260] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1573.026003] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1573.036615] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1573.048071] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1573.058264] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1573.088053] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1573.095224] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1573.102139] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1573.112266] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1573.119807] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1573.126921] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1573.135833] device veth0_vlan entered promiscuous mode [ 1573.144563] device veth1_vlan entered promiscuous mode [ 1573.150398] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1573.159615] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1573.170437] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1573.180594] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1573.188195] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1573.196288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1573.205993] device veth0_macvtap entered promiscuous mode [ 1573.212972] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1573.221843] device veth1_macvtap entered promiscuous mode [ 1573.230488] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1573.240941] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1573.251774] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1573.258511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1573.266983] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1573.277383] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1573.284169] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1573.393693] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 1573.400335] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1573.416805] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1573.422089] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 1573.429803] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1573.439775] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1573.447441] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1573.455769] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1574.292029] Bluetooth: hci0: command 0x0409 tx timeout [ 1576.370878] Bluetooth: hci0: command 0x041b tx timeout 2021/02/08 13:07:57 executed programs: 4 [ 1578.450792] Bluetooth: hci0: command 0x040f tx timeout [ 1580.530383] Bluetooth: hci0: command 0x0419 tx timeout 2021/02/08 13:08:02 executed programs: 10 [ 1582.610317] Bluetooth: hci0: command 0x0405 tx timeout 2021/02/08 13:08:07 executed programs: 16 2021/02/08 13:08:12 executed programs: 22 2021/02/08 13:08:17 executed programs: 28 2021/02/08 13:08:22 executed programs: 34 2021/02/08 13:08:27 executed programs: 40 2021/02/08 13:08:32 executed programs: 46 [ 1616.448788] ================================================================== [ 1616.456292] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 1616.462936] Read of size 8 at addr ffff8880aba26220 by task kworker/1:1/8258 [ 1616.470093] [ 1616.471699] CPU: 1 PID: 8258 Comm: kworker/1:1 Not tainted 4.19.172-syzkaller #0 [ 1616.479207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1616.488685] Workqueue: events l2cap_chan_timeout [ 1616.493418] Call Trace: [ 1616.496043] dump_stack+0x1fc/0x2ef [ 1616.499652] print_address_description.cold+0x54/0x219 [ 1616.504909] kasan_report_error.cold+0x8a/0x1b9 [ 1616.509585] ? __lock_acquire+0x2cb4/0x3ff0 [ 1616.513888] __asan_report_load8_noabort+0x88/0x90 [ 1616.518814] ? __lock_acquire+0x2cb4/0x3ff0 [ 1616.523113] __lock_acquire+0x2cb4/0x3ff0 [ 1616.527244] ? trace_hardirqs_off+0x64/0x200 [ 1616.531661] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1616.536765] ? debug_object_assert_init+0x242/0x2e0 [ 1616.541762] ? mark_held_locks+0xf0/0xf0 [ 1616.545802] ? debug_object_free+0x380/0x380 [ 1616.550197] ? mark_held_locks+0xf0/0xf0 [ 1616.554255] ? __save_stack_trace+0x9f/0x190 [ 1616.558648] ? del_timer+0xc3/0x100 [ 1616.562253] lock_acquire+0x170/0x3c0 [ 1616.566138] ? lock_sock_nested+0x3b/0x110 [ 1616.570349] _raw_spin_lock_bh+0x2f/0x40 [ 1616.574394] ? lock_sock_nested+0x3b/0x110 [ 1616.578613] lock_sock_nested+0x3b/0x110 [ 1616.582657] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 1616.587218] ? lock_downgrade+0x720/0x720 [ 1616.591356] l2cap_chan_del+0xbc/0xa50 [ 1616.595221] ? trace_hardirqs_off+0x64/0x200 [ 1616.599619] l2cap_chan_close+0x1b5/0x950 [ 1616.603746] ? __set_monitor_timer+0x200/0x200 [ 1616.608310] ? check_preemption_disabled+0x41/0x280 [ 1616.613304] l2cap_chan_timeout+0x17e/0x2f0 [ 1616.617615] process_one_work+0x864/0x1570 [ 1616.621846] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1616.626500] worker_thread+0x64c/0x1130 [ 1616.630453] ? __kthread_parkme+0x133/0x1e0 [ 1616.634932] ? process_one_work+0x1570/0x1570 [ 1616.639403] kthread+0x33f/0x460 [ 1616.642748] ? kthread_park+0x180/0x180 [ 1616.646710] ret_from_fork+0x24/0x30 [ 1616.650410] [ 1616.652010] Allocated by task 8390: [ 1616.655625] __kmalloc+0x15a/0x3c0 [ 1616.659156] sk_prot_alloc+0x1e2/0x2d0 [ 1616.663020] sk_alloc+0x36/0xec0 [ 1616.666366] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 1616.671443] l2cap_sock_create+0x123/0x1f0 [ 1616.675653] bt_sock_create+0x154/0x2a0 [ 1616.679605] __sock_create+0x3d8/0x740 [ 1616.683466] __sys_socket+0xef/0x200 [ 1616.687153] __x64_sys_socket+0x6f/0xb0 [ 1616.691115] do_syscall_64+0xf9/0x620 [ 1616.694901] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1616.700063] [ 1616.701668] Freed by task 8390: [ 1616.704934] kfree+0xcc/0x210 [ 1616.708025] __sk_destruct+0x684/0x8a0 [ 1616.711886] __sk_free+0x165/0x3b0 [ 1616.715401] sk_free+0x3b/0x50 [ 1616.718573] l2cap_sock_kill.part.0+0x124/0x150 [ 1616.723226] l2cap_sock_release+0x1e6/0x290 [ 1616.727523] __sock_release+0xcd/0x2a0 [ 1616.731382] sock_close+0x15/0x20 [ 1616.734832] __fput+0x2ce/0x890 [ 1616.738097] task_work_run+0x148/0x1c0 [ 1616.741959] get_signal+0x1b64/0x1f70 [ 1616.745742] do_signal+0x8f/0x1670 [ 1616.749273] exit_to_usermode_loop+0x204/0x2a0 [ 1616.753836] do_syscall_64+0x538/0x620 [ 1616.757697] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1616.762858] [ 1616.764463] The buggy address belongs to the object at ffff8880aba26180 [ 1616.764463] which belongs to the cache kmalloc-2048 of size 2048 [ 1616.777269] The buggy address is located 160 bytes inside of [ 1616.777269] 2048-byte region [ffff8880aba26180, ffff8880aba26980) [ 1616.789209] The buggy address belongs to the page: [ 1616.794122] page:ffffea0002ae8980 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 1616.804064] flags: 0xfff00000008100(slab|head) [ 1616.808634] raw: 00fff00000008100 ffffea00024e8608 ffffea00024e9788 ffff88813bff0c40 [ 1616.816493] raw: 0000000000000000 ffff8880aba26180 0000000100000003 0000000000000000 [ 1616.824354] page dumped because: kasan: bad access detected [ 1616.830042] [ 1616.831642] Memory state around the buggy address: [ 1616.836557] ffff8880aba26100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1616.843892] ffff8880aba26180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1616.851236] >ffff8880aba26200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1616.858571] ^ [ 1616.862962] ffff8880aba26280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1616.870301] ffff8880aba26300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1616.877640] ================================================================== [ 1616.884982] Disabling lock debugging due to kernel taint [ 1616.890405] Kernel panic - not syncing: panic_on_warn set ... [ 1616.890405] [ 1616.897776] CPU: 1 PID: 8258 Comm: kworker/1:1 Tainted: G B 4.19.172-syzkaller #0 [ 1616.906674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1616.916054] Workqueue: events l2cap_chan_timeout [ 1616.920786] Call Trace: [ 1616.923394] dump_stack+0x1fc/0x2ef [ 1616.926999] panic+0x26a/0x50e [ 1616.930168] ? __warn_printk+0xf3/0xf3 [ 1616.934033] ? lock_downgrade+0x720/0x720 [ 1616.938162] ? print_shadow_for_address+0xb8/0x114 [ 1616.943069] ? trace_hardirqs_off+0x64/0x200 [ 1616.947452] kasan_end_report+0x43/0x49 [ 1616.951403] kasan_report_error.cold+0xa7/0x1b9 [ 1616.956048] ? __lock_acquire+0x2cb4/0x3ff0 [ 1616.960344] __asan_report_load8_noabort+0x88/0x90 [ 1616.965270] ? __lock_acquire+0x2cb4/0x3ff0 [ 1616.969566] __lock_acquire+0x2cb4/0x3ff0 [ 1616.973692] ? trace_hardirqs_off+0x64/0x200 [ 1616.978072] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1616.983153] ? debug_object_assert_init+0x242/0x2e0 [ 1616.988193] ? mark_held_locks+0xf0/0xf0 [ 1616.992244] ? debug_object_free+0x380/0x380 [ 1616.996626] ? mark_held_locks+0xf0/0xf0 [ 1617.000664] ? __save_stack_trace+0x9f/0x190 [ 1617.005049] ? del_timer+0xc3/0x100 [ 1617.008653] lock_acquire+0x170/0x3c0 [ 1617.012430] ? lock_sock_nested+0x3b/0x110 [ 1617.016642] _raw_spin_lock_bh+0x2f/0x40 [ 1617.020689] ? lock_sock_nested+0x3b/0x110 [ 1617.024899] lock_sock_nested+0x3b/0x110 [ 1617.028937] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 1617.033492] ? lock_downgrade+0x720/0x720 [ 1617.037613] l2cap_chan_del+0xbc/0xa50 [ 1617.041483] ? trace_hardirqs_off+0x64/0x200 [ 1617.045873] l2cap_chan_close+0x1b5/0x950 [ 1617.049997] ? __set_monitor_timer+0x200/0x200 [ 1617.054552] ? check_preemption_disabled+0x41/0x280 [ 1617.059549] l2cap_chan_timeout+0x17e/0x2f0 [ 1617.063851] process_one_work+0x864/0x1570 [ 1617.068065] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1617.072713] worker_thread+0x64c/0x1130 [ 1617.076665] ? __kthread_parkme+0x133/0x1e0 [ 1617.080968] ? process_one_work+0x1570/0x1570 [ 1617.085438] kthread+0x33f/0x460 [ 1617.088782] ? kthread_park+0x180/0x180 [ 1617.092730] ret_from_fork+0x24/0x30 [ 1617.097362] Kernel Offset: disabled [ 1617.100993] Rebooting in 86400 seconds..