[ 63.917542][ T1040] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.937600][ T1040] device veth1_macvtap left promiscuous mode [ 63.944072][ T1040] device veth0_macvtap left promiscuous mode [ 63.952507][ T1040] device veth1_vlan left promiscuous mode [ 63.958915][ T1040] device veth0_vlan left promiscuous mode [ 64.204565][ T1040] team0 (unregistering): Port device team_slave_1 removed [ 64.222791][ T1040] team0 (unregistering): Port device team_slave_0 removed [ 64.239071][ T1040] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 64.262887][ T1040] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 64.349041][ T1040] bond0 (unregistering): Released all slaves [ 76.606701][ T14] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. 2022/12/06 20:21:43 ignoring optional flag "sandboxArg"="0" 2022/12/06 20:21:43 parsed 1 programs 2022/12/06 20:21:43 executed programs: 0 [ 81.621129][ T4079] cgroup: Unknown subsys name 'net' [ 81.633403][ T4079] cgroup: Unknown subsys name 'rlimit' [ 82.771707][ T3642] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 82.779809][ T3642] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 82.788069][ T3642] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 82.796951][ T3642] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 82.805083][ T3642] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 82.812936][ T3642] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 82.821405][ T4087] Bluetooth: hci0: HCI_REQ-0x0c1a [ 82.903828][ T4087] chnl_net:caif_netlink_parms(): no params data found [ 82.946298][ T4087] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.953580][ T4087] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.963140][ T4087] device bridge_slave_0 entered promiscuous mode [ 82.971977][ T4087] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.979734][ T4087] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.987739][ T4087] device bridge_slave_1 entered promiscuous mode [ 83.011626][ T4087] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.023950][ T4087] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.047295][ T4087] team0: Port device team_slave_0 added [ 83.054701][ T4087] team0: Port device team_slave_1 added [ 83.073762][ T4087] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.081106][ T4087] 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. [ 83.108418][ T4087] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.120911][ T4087] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.129134][ T4087] 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. [ 83.155490][ T4087] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.182280][ T4087] device hsr_slave_0 entered promiscuous mode [ 83.189494][ T4087] device hsr_slave_1 entered promiscuous mode [ 83.253980][ T4087] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.261164][ T4087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.268564][ T4087] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.275733][ T4087] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.320553][ T4087] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.333768][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.343345][ T3650] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.352270][ T3650] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.360256][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 83.374194][ T4087] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.384794][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.393730][ T26] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.400860][ T26] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.428829][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.437982][ T3650] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.445096][ T3650] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.454452][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.463166][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.471993][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.480312][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.489093][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.499157][ T4087] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.516961][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.524369][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.538174][ T4087] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.897007][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.912712][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.922089][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.932011][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.941068][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.951624][ T4087] device veth0_vlan entered promiscuous mode [ 83.964101][ T4087] device veth1_vlan entered promiscuous mode [ 83.989935][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.998888][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.007737][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.016450][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.028541][ T4087] device veth0_macvtap entered promiscuous mode [ 84.039557][ T4087] device veth1_macvtap entered promiscuous mode [ 84.054632][ T4087] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.062154][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.071113][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.079253][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.088401][ T3334] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.099484][ T4087] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.108924][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.117900][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.174567][ T46] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.189135][ T46] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.202277][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.218832][ T1040] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.229220][ T1040] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.238990][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 84.846747][ T3642] Bluetooth: hci0: command 0x0409 tx timeout [ 85.109998][ T4116] [ 85.112367][ T4116] ====================================================== [ 85.119455][ T4116] WARNING: possible circular locking dependency detected [ 85.126460][ T4116] 6.1.0-rc8-syzkaller-00014-g8ed710da2873 #0 Not tainted [ 85.133557][ T4116] ------------------------------------------------------ [ 85.140733][ T4116] syz-executor.0/4116 is trying to acquire lock: [ 85.147275][ T4116] ffff8880777fc130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x52/0x2f0 [ 85.158957][ T4116] [ 85.158957][ T4116] but task is already holding lock: [ 85.166358][ T4116] ffff88806de18528 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x276/0x470 [ 85.175883][ T4116] [ 85.175883][ T4116] which lock already depends on the new lock. [ 85.175883][ T4116] [ 85.186424][ T4116] [ 85.186424][ T4116] the existing dependency chain (in reverse order) is: [ 85.195444][ T4116] [ 85.195444][ T4116] -> #2 (&d->lock){+.+.}-{3:3}: [ 85.202483][ T4116] lock_acquire+0x1a7/0x400 [ 85.207512][ T4116] __mutex_lock_common+0x1de/0x26c0 [ 85.213327][ T4116] mutex_lock_nested+0x17/0x20 [ 85.218623][ T4116] __rfcomm_dlc_close+0x276/0x470 [ 85.224187][ T4116] rfcomm_dlc_close+0x10d/0x1c0 [ 85.229565][ T4116] __rfcomm_sock_close+0x101/0x220 [ 85.235209][ T4116] rfcomm_sock_shutdown+0xad/0x230 [ 85.240851][ T4116] rfcomm_sock_release+0x55/0x120 [ 85.246392][ T4116] sock_close+0xd7/0x260 [ 85.251156][ T4116] __fput+0x3ba/0x880 [ 85.255655][ T4116] task_work_run+0x243/0x300 [ 85.260760][ T4116] get_signal+0x1642/0x1810 [ 85.265779][ T4116] arch_do_signal_or_restart+0x8d/0x750 [ 85.271926][ T4116] exit_to_user_mode_loop+0x74/0x160 [ 85.277759][ T4116] exit_to_user_mode_prepare+0xad/0x110 [ 85.283957][ T4116] syscall_exit_to_user_mode+0x2e/0x60 [ 85.289946][ T4116] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 85.296357][ T4116] [ 85.296357][ T4116] -> #1 (rfcomm_mutex){+.+.}-{3:3}: [ 85.303923][ T4116] lock_acquire+0x1a7/0x400 [ 85.308946][ T4116] __mutex_lock_common+0x1de/0x26c0 [ 85.314744][ T4116] mutex_lock_nested+0x17/0x20 [ 85.320107][ T4116] rfcomm_dlc_open+0x25/0x50 [ 85.325206][ T4116] rfcomm_sock_connect+0x285/0x470 [ 85.330830][ T4116] __sys_connect+0x29b/0x2d0 [ 85.336821][ T4116] __x64_sys_connect+0x76/0x80 [ 85.342115][ T4116] do_syscall_64+0x2b/0x70 [ 85.347144][ T4116] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 85.353548][ T4116] [ 85.353548][ T4116] -> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}: [ 85.362921][ T4116] validate_chain+0x184a/0x6470 [ 85.368295][ T4116] __lock_acquire+0x1292/0x1f60 [ 85.373667][ T4116] lock_acquire+0x1a7/0x400 [ 85.378689][ T4116] lock_sock_nested+0x44/0xf0 [ 85.383908][ T4116] rfcomm_sk_state_change+0x52/0x2f0 [ 85.389882][ T4116] __rfcomm_dlc_close+0x2bb/0x470 [ 85.395444][ T4116] rfcomm_dlc_close+0x10d/0x1c0 [ 85.400807][ T4116] __rfcomm_sock_close+0x101/0x220 [ 85.406437][ T4116] rfcomm_sock_shutdown+0xad/0x230 [ 85.412068][ T4116] rfcomm_sock_release+0x55/0x120 [ 85.417605][ T4116] sock_close+0xd7/0x260 [ 85.422362][ T4116] __fput+0x3ba/0x880 [ 85.426858][ T4116] task_work_run+0x243/0x300 [ 85.432238][ T4116] get_signal+0x1642/0x1810 [ 85.437434][ T4116] arch_do_signal_or_restart+0x8d/0x750 [ 85.443672][ T4116] exit_to_user_mode_loop+0x74/0x160 [ 85.449564][ T4116] exit_to_user_mode_prepare+0xad/0x110 [ 85.455625][ T4116] syscall_exit_to_user_mode+0x2e/0x60 [ 85.461599][ T4116] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 85.468180][ T4116] [ 85.468180][ T4116] other info that might help us debug this: [ 85.468180][ T4116] [ 85.478421][ T4116] Chain exists of: [ 85.478421][ T4116] sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM --> rfcomm_mutex --> &d->lock [ 85.478421][ T4116] [ 85.492352][ T4116] Possible unsafe locking scenario: [ 85.492352][ T4116] [ 85.499822][ T4116] CPU0 CPU1 [ 85.505187][ T4116] ---- ---- [ 85.510555][ T4116] lock(&d->lock); [ 85.514364][ T4116] lock(rfcomm_mutex); [ 85.521133][ T4116] lock(&d->lock); [ 85.527467][ T4116] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 85.533711][ T4116] [ 85.533711][ T4116] *** DEADLOCK *** [ 85.533711][ T4116] [ 85.541845][ T4116] 3 locks held by syz-executor.0/4116: [ 85.547310][ T4116] #0: ffff888073fdd010 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x93/0x260 [ 85.557432][ T4116] #1: ffffffff8e5df588 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_close+0x32/0x1c0 [ 85.567030][ T4116] #2: ffff88806de18528 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x276/0x470 [ 85.576410][ T4116] [ 85.576410][ T4116] stack backtrace: [ 85.582323][ T4116] CPU: 1 PID: 4116 Comm: syz-executor.0 Not tainted 6.1.0-rc8-syzkaller-00014-g8ed710da2873 #0 [ 85.592874][ T4116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 85.603018][ T4116] Call Trace: [ 85.606398][ T4116] [ 85.609374][ T4116] dump_stack_lvl+0x1e3/0x2cb [ 85.614167][ T4116] ? nf_tcp_handle_invalid+0x62e/0x62e [ 85.619658][ T4116] ? print_circular_bug+0x13e/0x1c0 [ 85.624871][ T4116] check_noncircular+0x2f9/0x3b0 [ 85.629820][ T4116] ? add_chain_block+0x850/0x850 [ 85.634786][ T4116] ? lockdep_lock+0x11d/0x2a0 [ 85.639477][ T4116] ? _find_first_zero_bit+0xe8/0x110 [ 85.644791][ T4116] validate_chain+0x184a/0x6470 [ 85.649779][ T4116] ? reacquire_held_locks+0x680/0x680 [ 85.655187][ T4116] ? register_lock_class+0xfe/0x9b0 [ 85.660398][ T4116] ? is_dynamic_key+0x1f0/0x1f0 [ 85.665260][ T4116] ? mark_lock+0x9a/0x350 [ 85.669595][ T4116] ? __lock_acquire+0x1292/0x1f60 [ 85.674628][ T4116] ? mark_lock+0x9a/0x350 [ 85.678963][ T4116] __lock_acquire+0x1292/0x1f60 [ 85.683828][ T4116] lock_acquire+0x1a7/0x400 [ 85.688320][ T4116] ? rfcomm_sk_state_change+0x52/0x2f0 [ 85.693781][ T4116] ? read_lock_is_recursive+0x10/0x10 [ 85.699142][ T4116] ? __mutex_lock_common+0x45d/0x26c0 [ 85.704512][ T4116] ? del_timer+0x340/0x3d0 [ 85.708923][ T4116] ? __rfcomm_dlc_close+0x276/0x470 [ 85.714196][ T4116] ? mutex_lock_io_nested+0x60/0x60 [ 85.719396][ T4116] lock_sock_nested+0x44/0xf0 [ 85.724068][ T4116] ? rfcomm_sk_state_change+0x52/0x2f0 [ 85.729522][ T4116] rfcomm_sk_state_change+0x52/0x2f0 [ 85.734838][ T4116] __rfcomm_dlc_close+0x2bb/0x470 [ 85.739862][ T4116] rfcomm_dlc_close+0x10d/0x1c0 [ 85.744877][ T4116] __rfcomm_sock_close+0x101/0x220 [ 85.749986][ T4116] rfcomm_sock_shutdown+0xad/0x230 [ 85.755088][ T4116] rfcomm_sock_release+0x55/0x120 [ 85.760107][ T4116] sock_close+0xd7/0x260 [ 85.764342][ T4116] ? __fput+0x3b2/0x880 [ 85.768492][ T4116] ? sock_mmap+0x90/0x90 [ 85.772725][ T4116] __fput+0x3ba/0x880 [ 85.776715][ T4116] task_work_run+0x243/0x300 [ 85.781325][ T4116] ? task_work_cancel+0x290/0x290 [ 85.786366][ T4116] get_signal+0x1642/0x1810 [ 85.790892][ T4116] ? kick_process+0xd6/0x140 [ 85.795505][ T4116] ? task_work_add+0x2e6/0x340 [ 85.800281][ T4116] ? rcu_lock_release+0x20/0x20 [ 85.805666][ T4116] ? ptrace_notify+0x340/0x340 [ 85.810432][ T4116] arch_do_signal_or_restart+0x8d/0x750 [ 85.815970][ T4116] ? __sys_connect+0x157/0x2d0 [ 85.820730][ T4116] ? get_sigframe_size+0x10/0x10 [ 85.825660][ T4116] ? exit_to_user_mode_loop+0x42/0x160 [ 85.831114][ T4116] exit_to_user_mode_loop+0x74/0x160 [ 85.836394][ T4116] exit_to_user_mode_prepare+0xad/0x110 [ 85.841931][ T4116] syscall_exit_to_user_mode+0x2e/0x60 [ 85.847402][ T4116] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 85.853399][ T4116] RIP: 0033:0x7fbb47c89049 [ 85.857897][ T4116] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 85.877508][ T4116] RSP: 002b:00007fbb48e80168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 85.886018][ T4116] RAX: fffffffffffffffc RBX: 00007fbb47d9bf60 RCX: 00007fbb47c89049 [ 85.894006][ T4116] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 85.901999][ T4116] RBP: 00007fbb47ce308d R08: 0000000000000000 R09: 0000000000000000 [ 85.910144][ T4116] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.918336][ T4116] R13: 00007ffe56cf52bf R14: 00007fbb48e80300 R15: 0000000000022000 [ 85.926833][ T4116] 2022/12/06 20:21:48 executed programs: 2 [ 86.925497][ T3642] Bluetooth: hci0: command 0x041b tx timeout [ 89.005715][ T3642] Bluetooth: hci0: command 0x040f tx timeout [ 91.085472][ T3642] Bluetooth: hci0: command 0x0419 tx timeout 2022/12/06 20:21:53 executed programs: 8 [ 93.165490][ T3642] Bluetooth: hci0: command 0x0405 tx timeout