[ 52.302803][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.322347][ T8] device veth1_macvtap left promiscuous mode [ 52.328952][ T8] device veth0_macvtap left promiscuous mode [ 52.335166][ T8] device veth1_vlan left promiscuous mode [ 52.341393][ T8] device veth0_vlan left promiscuous mode [ 52.460758][ T8] team0 (unregistering): Port device team_slave_1 removed [ 52.473472][ T8] team0 (unregistering): Port device team_slave_0 removed [ 52.485415][ T8] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 52.499186][ T8] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 52.543972][ T8] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.1.114' (ECDSA) to the list of known hosts. 2022/08/23 00:37:11 ignoring optional flag "sandboxArg"="0" 2022/08/23 00:37:11 parsed 1 programs 2022/08/23 00:37:11 executed programs: 0 [ 66.387705][ T4031] cgroup: Unknown subsys name 'net' [ 66.399638][ T4031] cgroup: Unknown subsys name 'rlimit' [ 67.481500][ T48] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 67.489707][ T48] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 67.497526][ T48] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 67.505591][ T48] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 67.514123][ T48] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 67.521451][ T48] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 67.585277][ T4045] chnl_net:caif_netlink_parms(): no params data found [ 67.619433][ T4045] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.626741][ T4045] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.634691][ T4045] device bridge_slave_0 entered promiscuous mode [ 67.642902][ T4045] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.650328][ T4045] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.658412][ T4045] device bridge_slave_1 entered promiscuous mode [ 67.677246][ T4045] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.689119][ T4045] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.709699][ T4045] team0: Port device team_slave_0 added [ 67.717456][ T4045] team0: Port device team_slave_1 added [ 67.733363][ T4045] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.740394][ T4045] 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. [ 67.767370][ T4045] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.779669][ T4045] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.787658][ T4045] 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. [ 67.814373][ T4045] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.838267][ T4045] device hsr_slave_0 entered promiscuous mode [ 67.844859][ T4045] device hsr_slave_1 entered promiscuous mode [ 67.900688][ T4045] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.907901][ T4045] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.915203][ T4045] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.922575][ T4045] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.959585][ T4045] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.971166][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.980513][ T3614] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.988586][ T3614] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.996239][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 68.007337][ T4045] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.017634][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.026397][ T3614] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.033479][ T3614] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.055719][ T4045] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.067113][ T4045] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.081296][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.089884][ T140] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.097001][ T140] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.105385][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.114675][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.123809][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.132388][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.141399][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.149380][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.167775][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.175214][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.188098][ T4045] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.356524][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.371263][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.379779][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.387958][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.397585][ T4045] device veth0_vlan entered promiscuous mode [ 68.408798][ T4045] device veth1_vlan entered promiscuous mode [ 68.424348][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.432854][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.441407][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.451407][ T4045] device veth0_macvtap entered promiscuous mode [ 68.462231][ T4045] device veth1_macvtap entered promiscuous mode [ 68.477017][ T4045] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.484419][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.494981][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.505534][ T4045] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.513924][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 69.407069][ T4080] [ 69.409439][ T4080] ============================================ [ 69.415579][ T4080] WARNING: possible recursive locking detected [ 69.421700][ T4080] 6.0.0-rc2-syzkaller #0 Not tainted [ 69.426982][ T4080] -------------------------------------------- [ 69.433140][ T4080] syz-executor.0/4080 is trying to acquire lock: [ 69.439482][ T4080] ffff8880215f1130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x58/0x320 [ 69.450923][ T4080] [ 69.450923][ T4080] but task is already holding lock: [ 69.458352][ T4080] ffff8880215f1130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_shutdown+0x44/0x1c0 [ 69.469807][ T4080] [ 69.469807][ T4080] other info that might help us debug this: [ 69.477974][ T4080] Possible unsafe locking scenario: [ 69.477974][ T4080] [ 69.485500][ T4080] CPU0 [ 69.488762][ T4080] ---- [ 69.492054][ T4080] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 69.498212][ T4080] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 69.504360][ T4080] [ 69.504360][ T4080] *** DEADLOCK *** [ 69.504360][ T4080] [ 69.512611][ T4080] May be due to missing lock nesting notation [ 69.512611][ T4080] [ 69.520909][ T4080] 4 locks held by syz-executor.0/4080: [ 69.526429][ T4080] #0: ffff8880730d5610 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release+0x76/0x270 [ 69.536919][ T4080] #1: ffff8880215f1130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_shutdown+0x44/0x1c0 [ 69.548611][ T4080] #2: ffffffff8cab2a08 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_close+0x25/0x200 [ 69.558129][ T4080] #3: ffff88807210c128 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0xff/0x770 [ 69.567475][ T4080] [ 69.567475][ T4080] stack backtrace: [ 69.573335][ T4080] CPU: 0 PID: 4080 Comm: syz-executor.0 Not tainted 6.0.0-rc2-syzkaller #0 [ 69.582037][ T4080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 69.592066][ T4080] Call Trace: [ 69.595323][ T4080] [ 69.598253][ T4080] dump_stack_lvl+0x57/0x7d [ 69.602836][ T4080] __lock_acquire.cold+0x116/0x397 [ 69.608017][ T4080] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.614021][ T4080] lock_acquire+0x1ab/0x570 [ 69.618512][ T4080] ? rfcomm_sk_state_change+0x58/0x320 [ 69.623941][ T4080] ? lock_release+0x780/0x780 [ 69.628610][ T4080] ? mutex_lock_io_nested+0x1190/0x1190 [ 69.634562][ T4080] ? _raw_spin_unlock_irqrestore+0x57/0x70 [ 69.640352][ T4080] ? del_timer+0xb3/0xf0 [ 69.644660][ T4080] lock_sock_nested+0x2b/0xd0 [ 69.649490][ T4080] ? rfcomm_sk_state_change+0x58/0x320 [ 69.654918][ T4080] rfcomm_sk_state_change+0x58/0x320 [ 69.660181][ T4080] __rfcomm_dlc_close+0x153/0x770 [ 69.665176][ T4080] rfcomm_dlc_close+0x1a4/0x200 [ 69.670005][ T4080] __rfcomm_sock_close+0x10d/0x200 [ 69.675106][ T4080] rfcomm_sock_shutdown+0xa4/0x1c0 [ 69.680554][ T4080] rfcomm_sock_release+0x4f/0x120 [ 69.685561][ T4080] __sock_release+0xbb/0x270 [ 69.690135][ T4080] sock_close+0xf/0x20 [ 69.694180][ T4080] __fput+0x1f5/0x8c0 [ 69.698249][ T4080] task_work_run+0xc0/0x160 [ 69.702763][ T4080] get_signal+0x19a/0x1e40 [ 69.707257][ T4080] ? find_held_lock+0x2d/0x110 [ 69.712016][ T4080] ? exit_signals+0x6f0/0x6f0 [ 69.716748][ T4080] ? rfcomm_sock_connect+0xf8/0x3b0 [ 69.721916][ T4080] ? lock_downgrade+0x6e0/0x6e0 [ 69.726779][ T4080] arch_do_signal_or_restart+0x88/0x1b00 [ 69.732403][ T4080] ? kick_process+0xf2/0x190 [ 69.737071][ T4080] ? task_work_add+0x13b/0x160 [ 69.741894][ T4080] ? get_sigframe_size+0x10/0x10 [ 69.746828][ T4080] ? __sys_connect+0x106/0x120 [ 69.751584][ T4080] ? __sys_connect_file+0x180/0x180 [ 69.756776][ T4080] exit_to_user_mode_prepare+0x15f/0x250 [ 69.762403][ T4080] syscall_exit_to_user_mode+0x19/0x50 [ 69.767855][ T4080] do_syscall_64+0x42/0x80 [ 69.772344][ T4080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 69.778300][ T4080] RIP: 0033:0x7f30ae289049 [ 69.782878][ T4080] 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 [ 69.803605][ T4080] RSP: 002b:00007f30af3ad168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 69.812290][ T4080] RAX: fffffffffffffffc RBX: 00007f30ae39bf60 RCX: 00007f30ae289049 [ 69.820518][ T4080] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 69.828562][ T4080] RBP: 00007f30ae2e308d R08: 0000000000000000 R09: 0000000000000000 [ 69.836787][ T4080] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.844741][ T4080] R13: 00007ffedf08a26f R14: 00007f30af3ad300 R15: 0000000000022000 [ 69.853257][ T4080] [ 69.858238][ T14] Bluetooth: hci0: command 0x0409 tx timeout [ 71.876783][ T14] Bluetooth: hci0: command 0x041b tx timeout [ 73.956870][ T14] Bluetooth: hci0: command 0x040f tx timeout [ 76.036417][ T14] Bluetooth: hci0: command 0x0419 tx timeout [ 76.356613][ T143] cfg80211: failed to load regulatory.db [ 78.116403][ T14] Bluetooth: hci0: command 0x0405 tx timeout