[ 58.450006][ T11] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.487267][ T11] device veth1_macvtap left promiscuous mode [ 58.493903][ T11] device veth0_macvtap left promiscuous mode [ 58.500091][ T11] device veth1_vlan left promiscuous mode [ 58.507829][ T11] device veth0_vlan left promiscuous mode [ 58.767116][ T11] team0 (unregistering): Port device team_slave_1 removed [ 58.790710][ T11] team0 (unregistering): Port device team_slave_0 removed [ 58.803572][ T11] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 58.817019][ T11] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 58.869316][ T11] bond0 (unregistering): Released all slaves [ 76.482132][ T14] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. 2022/09/18 15:24:40 ignoring optional flag "sandboxArg"="0" 2022/09/18 15:24:40 parsed 1 programs 2022/09/18 15:24:40 executed programs: 0 [ 79.450985][ T3617] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.459020][ T3617] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.467417][ T3617] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.475707][ T3617] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.484098][ T3617] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 79.491399][ T3617] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 79.565059][ T4076] chnl_net:caif_netlink_parms(): no params data found [ 79.602595][ T4076] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.609775][ T4076] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.617836][ T4076] device bridge_slave_0 entered promiscuous mode [ 79.626152][ T4076] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.633536][ T4076] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.641195][ T4076] device bridge_slave_1 entered promiscuous mode [ 79.660630][ T4076] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.672498][ T4076] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.701666][ T4076] team0: Port device team_slave_0 added [ 79.709488][ T4076] team0: Port device team_slave_1 added [ 79.727157][ T4076] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.734489][ T4076] 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. [ 79.760701][ T4076] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.774343][ T4076] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.781321][ T4076] 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. [ 79.807601][ T4076] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.833281][ T4076] device hsr_slave_0 entered promiscuous mode [ 79.840430][ T4076] device hsr_slave_1 entered promiscuous mode [ 79.901855][ T4076] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.908963][ T4076] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.916403][ T4076] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.923510][ T4076] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.963372][ T4076] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.976073][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.985344][ T142] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.994742][ T142] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.003243][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.016391][ T4076] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.026452][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.036235][ T142] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.043692][ T142] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.062674][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.073107][ T142] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.080182][ T142] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.089371][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.107189][ T4076] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 80.120562][ T4076] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.133634][ T3639] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.141582][ T3639] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.150143][ T3639] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.159000][ T3639] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.167517][ T3639] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.186910][ T4076] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.195707][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.203918][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.392144][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.408054][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.417707][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.425709][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.436689][ T4076] device veth0_vlan entered promiscuous mode [ 80.447161][ T4076] device veth1_vlan entered promiscuous mode [ 80.464962][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.473708][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.483103][ T1794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.493751][ T4076] device veth0_macvtap entered promiscuous mode [ 80.504270][ T4076] device veth1_macvtap entered promiscuous mode [ 80.520051][ T4076] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.528117][ T3625] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.537727][ T3625] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.549216][ T4076] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.558080][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.450909][ T4095] [ 81.453259][ T4095] ============================================ [ 81.459391][ T4095] WARNING: possible recursive locking detected [ 81.465534][ T4095] 6.0.0-rc4-syzkaller-00985-g44a8535fb87c #0 Not tainted [ 81.472534][ T4095] -------------------------------------------- [ 81.478661][ T4095] syz-executor.0/4095 is trying to acquire lock: [ 81.484975][ T4095] ffff88807af91130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x69/0x3a0 [ 81.496540][ T4095] [ 81.496540][ T4095] but task is already holding lock: [ 81.503890][ T4095] ffff88807af91130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_shutdown+0x52/0x210 [ 81.515314][ T4095] [ 81.515314][ T4095] other info that might help us debug this: [ 81.523376][ T4095] Possible unsafe locking scenario: [ 81.523376][ T4095] [ 81.530920][ T4095] CPU0 [ 81.534187][ T4095] ---- [ 81.537541][ T4095] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 81.544127][ T4095] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 81.550294][ T4095] [ 81.550294][ T4095] *** DEADLOCK *** [ 81.550294][ T4095] [ 81.558512][ T4095] May be due to missing lock nesting notation [ 81.558512][ T4095] [ 81.566836][ T4095] 4 locks held by syz-executor.0/4095: [ 81.572289][ T4095] #0: ffff88806a008810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 [ 81.583737][ T4095] #1: ffff88807af91130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_shutdown+0x52/0x210 [ 81.595602][ T4095] #2: ffffffff8da00ac8 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_close+0x2f/0x240 [ 81.605021][ T4095] #3: ffff88807a2f5128 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x15d/0x890 [ 81.614464][ T4095] [ 81.614464][ T4095] stack backtrace: [ 81.620349][ T4095] CPU: 0 PID: 4095 Comm: syz-executor.0 Not tainted 6.0.0-rc4-syzkaller-00985-g44a8535fb87c #0 [ 81.630762][ T4095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 81.640812][ T4095] Call Trace: [ 81.644090][ T4095] [ 81.647454][ T4095] dump_stack_lvl+0xcd/0x134 [ 81.652059][ T4095] __lock_acquire.cold+0x116/0x3a7 [ 81.657182][ T4095] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 81.663352][ T4095] lock_acquire+0x1ab/0x570 [ 81.667954][ T4095] ? rfcomm_sk_state_change+0x69/0x3a0 [ 81.673442][ T4095] ? lock_release+0x780/0x780 [ 81.678122][ T4095] ? __rfcomm_dlc_close+0x15d/0x890 [ 81.683342][ T4095] ? mutex_lock_io_nested+0x1190/0x1190 [ 81.688918][ T4095] ? lockdep_hardirqs_on+0x79/0x100 [ 81.694139][ T4095] ? del_timer+0xc5/0x110 [ 81.698505][ T4095] lock_sock_nested+0x36/0xf0 [ 81.703191][ T4095] ? rfcomm_sk_state_change+0x69/0x3a0 [ 81.708656][ T4095] rfcomm_sk_state_change+0x69/0x3a0 [ 81.714038][ T4095] __rfcomm_dlc_close+0x1b1/0x890 [ 81.719094][ T4095] rfcomm_dlc_close+0x1e5/0x240 [ 81.723951][ T4095] ? __sanitizer_cov_trace_switch+0x50/0x90 [ 81.729856][ T4095] __rfcomm_sock_close+0x13c/0x250 [ 81.734973][ T4095] ? lockdep_hardirqs_on+0x79/0x100 [ 81.740178][ T4095] rfcomm_sock_shutdown+0xcc/0x210 [ 81.745315][ T4095] rfcomm_sock_release+0x64/0x140 [ 81.750351][ T4095] __sock_release+0xcd/0x280 [ 81.755035][ T4095] sock_close+0x18/0x20 [ 81.759388][ T4095] __fput+0x277/0x9d0 [ 81.763461][ T4095] ? __sock_release+0x280/0x280 [ 81.768416][ T4095] task_work_run+0xdd/0x1a0 [ 81.772921][ T4095] get_signal+0x1c3/0x2610 [ 81.777357][ T4095] ? rfcomm_sock_connect+0x155/0x450 [ 81.782739][ T4095] ? lock_downgrade+0x6e0/0x6e0 [ 81.787595][ T4095] ? exit_signals+0x8b0/0x8b0 [ 81.792294][ T4095] ? __local_bh_enable_ip+0xa0/0x120 [ 81.797639][ T4095] ? __local_bh_enable_ip+0xa0/0x120 [ 81.803100][ T4095] arch_do_signal_or_restart+0x82/0x2300 [ 81.808754][ T4095] ? task_work_add+0xa4/0x1f0 [ 81.813528][ T4095] ? fput+0xf2/0x190 [ 81.817446][ T4095] ? get_sigframe_size+0x10/0x10 [ 81.822666][ T4095] ? __sys_connect_file+0x190/0x190 [ 81.827959][ T4095] ? exit_to_user_mode_prepare+0x137/0x250 [ 81.833774][ T4095] exit_to_user_mode_prepare+0x15f/0x250 [ 81.839781][ T4095] syscall_exit_to_user_mode+0x19/0x50 [ 81.845624][ T4095] do_syscall_64+0x42/0xb0 [ 81.850058][ T4095] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 81.856259][ T4095] RIP: 0033:0x4665f9 [ 81.860197][ T4095] 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 bc ff ff ff f7 d8 64 89 01 48 [ 81.879913][ T4095] RSP: 002b:00007f54e26da188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 81.888416][ T4095] RAX: fffffffffffffffc RBX: 000000000056bf80 RCX: 00000000004665f9 [ 81.896832][ T4095] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 81.904801][ T4095] RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 [ 81.912858][ T4095] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 [ 81.921351][ T4095] R13: 00007ffd646e4b3f R14: 00007f54e26da300 R15: 0000000000022000 [ 81.929504][ T4095] [ 81.935462][ T142] Bluetooth: hci0: command 0x0409 tx timeout [ 83.991934][ T1794] Bluetooth: hci0: command 0x041b tx timeout [ 86.072731][ T3625] Bluetooth: hci0: command 0x040f tx timeout [ 88.151958][ T3625] Bluetooth: hci0: command 0x0419 tx timeout [ 90.232164][ T3625] Bluetooth: hci0: command 0x0405 tx timeout