Warning: Permanently added '10.128.0.237' (ECDSA) to the list of known hosts. 2021/06/13 03:18:10 parsed 1 programs 2021/06/13 03:18:10 executed programs: 0 syzkaller login: [ 1084.275808] IPVS: ftp: loaded support on port[0] = 21 [ 1084.369906] chnl_net:caif_netlink_parms(): no params data found [ 1084.453886] bridge0: port 1(bridge_slave_0) entered blocking state [ 1084.460459] bridge0: port 1(bridge_slave_0) entered disabled state [ 1084.468348] device bridge_slave_0 entered promiscuous mode [ 1084.476362] bridge0: port 2(bridge_slave_1) entered blocking state [ 1084.482742] bridge0: port 2(bridge_slave_1) entered disabled state [ 1084.491357] device bridge_slave_1 entered promiscuous mode [ 1084.508276] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1084.517166] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1084.534954] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1084.542370] team0: Port device team_slave_0 added [ 1084.548290] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1084.556041] team0: Port device team_slave_1 added [ 1084.570332] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1084.576612] 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. [ 1084.601835] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1084.613725] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1084.620030] 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. [ 1084.645431] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1084.656397] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1084.663729] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1084.683667] device hsr_slave_0 entered promiscuous mode [ 1084.689382] device hsr_slave_1 entered promiscuous mode [ 1084.696642] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1084.703554] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1084.766060] bridge0: port 2(bridge_slave_1) entered blocking state [ 1084.772450] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1084.779313] bridge0: port 1(bridge_slave_0) entered blocking state [ 1084.785720] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1084.816628] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1084.822712] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1084.831796] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1084.840800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1084.849043] bridge0: port 1(bridge_slave_0) entered disabled state [ 1084.856807] bridge0: port 2(bridge_slave_1) entered disabled state [ 1084.863633] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1084.873653] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1084.880297] 8021q: adding VLAN 0 to HW filter on device team0 [ 1084.889416] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1084.897099] bridge0: port 1(bridge_slave_0) entered blocking state [ 1084.903432] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1084.923615] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1084.933887] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1084.945978] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1084.952770] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1084.960674] bridge0: port 2(bridge_slave_1) entered blocking state [ 1084.967072] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1084.975222] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1084.983823] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1084.991582] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1084.999300] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1085.007246] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1085.013953] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1085.025820] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1085.034756] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1085.041393] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1085.051548] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1085.064004] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1085.073381] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1085.107159] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1085.114950] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1085.121410] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1085.131466] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1085.139235] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1085.146585] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1085.156096] device veth0_vlan entered promiscuous mode [ 1085.164552] device veth1_vlan entered promiscuous mode [ 1085.171070] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1085.179958] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1085.191031] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1085.201824] device veth0_macvtap entered promiscuous mode [ 1085.208552] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1085.215668] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1085.222839] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1085.230992] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1085.239003] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1085.249046] device veth1_macvtap entered promiscuous mode [ 1085.257668] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1085.266626] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1085.276674] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1085.283358] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1085.295324] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1085.302034] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1085.407427] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 1085.414934] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1085.431935] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 1085.434055] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1085.442753] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1085.448940] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1085.455988] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1085.466334] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1086.314832] Bluetooth: hci0: command 0x0409 tx timeout [ 1088.383985] Bluetooth: hci0: command 0x041b tx timeout 2021/06/13 03:18:16 executed programs: 4 [ 1090.464367] Bluetooth: hci0: command 0x040f tx timeout [ 1092.543386] Bluetooth: hci0: command 0x0419 tx timeout 2021/06/13 03:18:21 executed programs: 10 [ 1094.623196] Bluetooth: hci0: command 0x0405 tx timeout 2021/06/13 03:18:26 executed programs: 16 2021/06/13 03:18:31 executed programs: 22 2021/06/13 03:18:36 executed programs: 28 2021/06/13 03:18:42 executed programs: 34 [ 1116.623035] ieee802154 phy0 wpan0: encryption failed: -22 [ 1116.628796] ieee802154 phy1 wpan1: encryption failed: -22 2021/06/13 03:18:47 executed programs: 40 2021/06/13 03:18:52 executed programs: 46 2021/06/13 03:18:57 executed programs: 52 [ 1130.700486] ================================================================== [ 1130.707886] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 1130.714839] Read of size 8 at addr ffff8880aaf640a0 by task kworker/0:3/8343 [ 1130.722110] [ 1130.723726] CPU: 0 PID: 8343 Comm: kworker/0:3 Not tainted 4.19.194-syzkaller #0 [ 1130.731234] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1130.740575] Workqueue: events l2cap_chan_timeout [ 1130.745308] Call Trace: [ 1130.747881] dump_stack+0x1fc/0x2ef [ 1130.751510] print_address_description.cold+0x54/0x219 [ 1130.756871] kasan_report_error.cold+0x8a/0x1b9 [ 1130.761617] ? __lock_acquire+0x2cb4/0x3ff0 [ 1130.766018] __asan_report_load8_noabort+0x88/0x90 [ 1130.770931] ? __lock_acquire+0x2cb4/0x3ff0 [ 1130.775233] __lock_acquire+0x2cb4/0x3ff0 [ 1130.779363] ? trace_hardirqs_off+0x64/0x200 [ 1130.783758] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1130.788857] ? debug_object_assert_init+0x242/0x2e0 [ 1130.793852] ? mark_held_locks+0xf0/0xf0 [ 1130.797920] ? debug_object_free+0x380/0x380 [ 1130.802311] ? mark_held_locks+0xf0/0xf0 [ 1130.806369] ? __save_stack_trace+0x9f/0x190 [ 1130.810770] ? del_timer+0xc3/0x100 [ 1130.814380] lock_acquire+0x170/0x3c0 [ 1130.818160] ? lock_sock_nested+0x3b/0x110 [ 1130.822386] _raw_spin_lock_bh+0x2f/0x40 [ 1130.826426] ? lock_sock_nested+0x3b/0x110 [ 1130.830657] lock_sock_nested+0x3b/0x110 [ 1130.834791] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 1130.839366] ? lock_downgrade+0x720/0x720 [ 1130.843493] l2cap_chan_del+0xbc/0xa50 [ 1130.847362] ? trace_hardirqs_off+0x64/0x200 [ 1130.851748] l2cap_chan_close+0x1b5/0x950 [ 1130.855874] ? __set_monitor_timer+0x200/0x200 [ 1130.860437] ? check_preemption_disabled+0x41/0x280 [ 1130.865433] l2cap_chan_timeout+0x17e/0x2f0 [ 1130.869825] process_one_work+0x864/0x1570 [ 1130.874052] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1130.878730] worker_thread+0x64c/0x1130 [ 1130.882687] ? __kthread_parkme+0x133/0x1e0 [ 1130.887056] ? process_one_work+0x1570/0x1570 [ 1130.891532] kthread+0x33f/0x460 [ 1130.894891] ? kthread_park+0x180/0x180 [ 1130.898845] ret_from_fork+0x24/0x30 [ 1130.902588] [ 1130.904193] Allocated by task 8424: [ 1130.907815] __kmalloc+0x15a/0x3c0 [ 1130.911334] sk_prot_alloc+0x1e2/0x2d0 [ 1130.915197] sk_alloc+0x36/0xec0 [ 1130.918542] l2cap_sock_alloc.constprop.0+0x31/0x210 [ 1130.923624] l2cap_sock_create+0x123/0x1f0 [ 1130.927853] bt_sock_create+0x154/0x2a0 [ 1130.931805] __sock_create+0x3d8/0x740 [ 1130.935673] __sys_socket+0xef/0x200 [ 1130.939364] __x64_sys_socket+0x6f/0xb0 [ 1130.943316] do_syscall_64+0xf9/0x620 [ 1130.947180] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1130.952344] [ 1130.953949] Freed by task 8422: [ 1130.957215] kfree+0xcc/0x210 [ 1130.960304] __sk_destruct+0x684/0x8a0 [ 1130.964234] __sk_free+0x165/0x3b0 [ 1130.967789] sk_free+0x3b/0x50 [ 1130.970973] l2cap_sock_kill.part.0+0x124/0x150 [ 1130.975622] l2cap_sock_release+0x1e6/0x290 [ 1130.980036] __sock_release+0xcd/0x2a0 [ 1130.983953] sock_close+0x15/0x20 [ 1130.987386] __fput+0x2ce/0x890 [ 1130.990648] task_work_run+0x148/0x1c0 [ 1130.994519] get_signal+0x1b64/0x1f70 [ 1130.998308] do_signal+0x8f/0x1670 [ 1131.001824] exit_to_usermode_loop+0x204/0x2a0 [ 1131.006386] do_syscall_64+0x538/0x620 [ 1131.010254] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1131.015422] [ 1131.017040] The buggy address belongs to the object at ffff8880aaf64000 [ 1131.017040] which belongs to the cache kmalloc-2048 of size 2048 [ 1131.029844] The buggy address is located 160 bytes inside of [ 1131.029844] 2048-byte region [ffff8880aaf64000, ffff8880aaf64800) [ 1131.041780] The buggy address belongs to the page: [ 1131.046717] page:ffffea0002abd900 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0 [ 1131.056673] flags: 0xfff00000008100(slab|head) [ 1131.061244] raw: 00fff00000008100 ffffea0002add008 ffffea0002413388 ffff88813bff0c40 [ 1131.069112] raw: 0000000000000000 ffff8880aaf64000 0000000100000003 0000000000000000 [ 1131.076982] page dumped because: kasan: bad access detected [ 1131.082671] [ 1131.084276] Memory state around the buggy address: [ 1131.089197] ffff8880aaf63f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1131.096559] ffff8880aaf64000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1131.103903] >ffff8880aaf64080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1131.111253] ^ [ 1131.115658] ffff8880aaf64100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1131.122997] ffff8880aaf64180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1131.130347] ================================================================== [ 1131.137697] Disabling lock debugging due to kernel taint [ 1131.143124] Kernel panic - not syncing: panic_on_warn set ... [ 1131.143124] [ 1131.150471] CPU: 0 PID: 8343 Comm: kworker/0:3 Tainted: G B 4.19.194-syzkaller #0 [ 1131.159379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1131.168733] Workqueue: events l2cap_chan_timeout [ 1131.173464] Call Trace: [ 1131.176038] dump_stack+0x1fc/0x2ef [ 1131.179671] panic+0x26a/0x50e [ 1131.182844] ? __warn_printk+0xf3/0xf3 [ 1131.186723] ? lock_downgrade+0x720/0x720 [ 1131.190853] ? print_shadow_for_address+0xb8/0x114 [ 1131.195761] ? trace_hardirqs_off+0x64/0x200 [ 1131.200148] kasan_end_report+0x43/0x49 [ 1131.204101] kasan_report_error.cold+0xa7/0x1b9 [ 1131.208751] ? __lock_acquire+0x2cb4/0x3ff0 [ 1131.213053] __asan_report_load8_noabort+0x88/0x90 [ 1131.217961] ? __lock_acquire+0x2cb4/0x3ff0 [ 1131.222263] __lock_acquire+0x2cb4/0x3ff0 [ 1131.226391] ? trace_hardirqs_off+0x64/0x200 [ 1131.230780] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1131.235862] ? debug_object_assert_init+0x242/0x2e0 [ 1131.240892] ? mark_held_locks+0xf0/0xf0 [ 1131.244945] ? debug_object_free+0x380/0x380 [ 1131.249341] ? mark_held_locks+0xf0/0xf0 [ 1131.253382] ? __save_stack_trace+0x9f/0x190 [ 1131.257773] ? del_timer+0xc3/0x100 [ 1131.261382] lock_acquire+0x170/0x3c0 [ 1131.265174] ? lock_sock_nested+0x3b/0x110 [ 1131.269391] _raw_spin_lock_bh+0x2f/0x40 [ 1131.273431] ? lock_sock_nested+0x3b/0x110 [ 1131.277641] lock_sock_nested+0x3b/0x110 [ 1131.281685] l2cap_sock_teardown_cb+0xa0/0x6d0 [ 1131.286249] ? lock_downgrade+0x720/0x720 [ 1131.290396] l2cap_chan_del+0xbc/0xa50 [ 1131.294275] ? trace_hardirqs_off+0x64/0x200 [ 1131.298663] l2cap_chan_close+0x1b5/0x950 [ 1131.302790] ? __set_monitor_timer+0x200/0x200 [ 1131.307396] ? check_preemption_disabled+0x41/0x280 [ 1131.312391] l2cap_chan_timeout+0x17e/0x2f0 [ 1131.316697] process_one_work+0x864/0x1570 [ 1131.320915] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1131.325566] worker_thread+0x64c/0x1130 [ 1131.329567] ? __kthread_parkme+0x133/0x1e0 [ 1131.333866] ? process_one_work+0x1570/0x1570 [ 1131.338344] kthread+0x33f/0x460 [ 1131.341707] ? kthread_park+0x180/0x180 [ 1131.345664] ret_from_fork+0x24/0x30 [ 1131.350161] Kernel Offset: disabled [ 1131.353774] Rebooting in 86400 seconds..