possible deadlock in lapbeth_device_event ============================================ WARNING: possible recursive locking detected 6.14.0-syzkaller-07422-gacb4f33713b9-dirty #0 Not tainted -------------------------------------------- dhcpcd/5494 is trying to acquire lock: ffff888031928d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff888031928d28 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2783 [inline] ffff888031928d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] ffff888031928d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 but task is already holding lock: ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&dev->lock); lock(&dev->lock); *** DEADLOCK *** May be due to missing lock nesting notation 2 locks held by dhcpcd/5494: #0: ffffffff900cf5c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #0: ffffffff900cf5c8 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 net/ipv4/devinet.c:1121 #1: ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] #1: ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] #1: ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 stack backtrace: CPU: 0 UID: 0 PID: 5494 Comm: dhcpcd Not tainted 6.14.0-syzkaller-07422-gacb4f33713b9-dirty #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_deadlock_bug+0x2be/0x2d0 kernel/locking/lockdep.c:3042 check_deadlock kernel/locking/lockdep.c:3094 [inline] validate_chain+0x928/0x24e0 kernel/locking/lockdep.c:3896 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:587 [inline] __mutex_lock+0x1a5/0x10c0 kernel/locking/mutex.c:732 netdev_lock include/linux/netdevice.h:2751 [inline] netif_napi_add_weight include/linux/netdevice.h:2783 [inline] lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85 __dev_notify_flags+0x209/0x410 net/core/dev.c:-1 netif_change_flags+0xf0/0x1a0 net/core/dev.c:9438 dev_change_flags+0x146/0x270 net/core/dev_api.c:68 devinet_ioctl+0xea4/0x1d80 net/ipv4/devinet.c:1200 inet_ioctl+0x3d9/0x4f0 net/ipv4/af_inet.c:1001 sock_do_ioctl+0x15a/0x490 net/socket.c:1190 sock_ioctl+0x644/0x900 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd9c5fd0d49 Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffdb24aded8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd9c5f026c0 RCX: 00007fd9c5fd0d49 RDX: 00007ffdb24be0c8 RSI: 0000000000008914 RDI: 000000000000000e RBP: 00007ffdb24ce288 R08: 00007ffdb24be088 R09: 00007ffdb24be038 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb24be0c8 R14: 0000000000000028 R15: 0000000000008914 Warning: Permanently added '10.128.10.58' (ED25519) to the list of known hosts. 2025/03/28 18:27:28 ignoring optional flag "sandboxArg"="0" 2025/03/28 18:27:29 parsed 1 programs [ 61.294275][ T5826] cgroup: Unknown subsys name 'net' [ 61.429526][ T5826] cgroup: Unknown subsys name 'cpuset' [ 61.438441][ T5826] cgroup: Unknown subsys name 'rlimit' [ 62.698859][ T5826] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 65.112639][ T5833] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 65.302449][ T64] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.310944][ T64] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.332314][ T64] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.341920][ T64] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.489344][ T5869] chnl_net:caif_netlink_parms(): no params data found [ 66.543387][ T5869] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.551357][ T5869] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.558926][ T5869] bridge_slave_0: entered allmulticast mode [ 66.565655][ T5869] bridge_slave_0: entered promiscuous mode [ 66.574345][ T5869] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.582446][ T5869] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.589772][ T5869] bridge_slave_1: entered allmulticast mode [ 66.597494][ T5869] bridge_slave_1: entered promiscuous mode [ 66.620346][ T5869] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.632121][ T5869] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.657666][ T5869] team0: Port device team_slave_0 added [ 66.665375][ T5869] team0: Port device team_slave_1 added [ 66.683560][ T5869] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.692285][ T5869] 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. [ 66.718496][ T5869] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.730760][ T5869] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.738201][ T5869] 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. [ 66.764996][ T5869] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.795937][ T5869] hsr_slave_0: entered promiscuous mode [ 66.802452][ T5869] hsr_slave_1: entered promiscuous mode [ 66.892865][ T5869] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.904847][ T5869] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.914981][ T5869] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.924934][ T5869] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.949266][ T5869] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.956622][ T5869] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.964627][ T5869] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.971983][ T5869] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.018078][ T5869] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.036037][ T3583] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.045071][ T3583] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.062203][ T5869] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.075271][ T3439] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.082447][ T3439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.094798][ T3583] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.102129][ T3583] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.223228][ T5869] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.258475][ T5869] veth0_vlan: entered promiscuous mode [ 67.269615][ T5869] veth1_vlan: entered promiscuous mode [ 67.293081][ T5869] veth0_macvtap: entered promiscuous mode [ 67.301492][ T5869] veth1_macvtap: entered promiscuous mode [ 67.319170][ T5869] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.333396][ T5869] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.346831][ T5869] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.356212][ T5869] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.365100][ T5869] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.373953][ T5869] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.472722][ T5869] syz-executor (5869) used greatest stack depth: 19488 bytes left [ 67.501901][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.576996][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.661465][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.748009][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.949932][ T54] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 67.958916][ T54] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 67.967344][ T54] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 67.976923][ T54] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 67.985260][ T54] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2025/03/28 18:27:39 executed programs: 0 [ 69.164026][ T5141] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 69.173295][ T5141] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 69.181734][ T5141] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 69.190184][ T5141] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 69.199442][ T5141] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 69.295244][ T5935] chnl_net:caif_netlink_parms(): no params data found [ 69.338972][ T5935] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.346368][ T5935] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.353702][ T5935] bridge_slave_0: entered allmulticast mode [ 69.360993][ T5935] bridge_slave_0: entered promiscuous mode [ 69.368827][ T5935] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.376982][ T5935] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.384211][ T5935] bridge_slave_1: entered allmulticast mode [ 69.391737][ T5935] bridge_slave_1: entered promiscuous mode [ 69.416181][ T5935] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.427861][ T5935] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.452906][ T5935] team0: Port device team_slave_0 added [ 69.460371][ T5935] team0: Port device team_slave_1 added [ 69.481917][ T5935] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.489067][ T5935] 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. [ 69.515903][ T5935] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.529007][ T5935] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.536113][ T5935] 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. [ 69.562895][ T5935] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.592286][ T5935] hsr_slave_0: entered promiscuous mode [ 69.599283][ T5935] hsr_slave_1: entered promiscuous mode [ 69.605412][ T5935] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.613545][ T5935] Cannot create hsr debugfs directory [ 70.333954][ T12] bridge_slave_1: left allmulticast mode [ 70.340653][ T12] bridge_slave_1: left promiscuous mode [ 70.349079][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.361384][ T12] bridge_slave_0: left allmulticast mode [ 70.373776][ T12] bridge_slave_0: left promiscuous mode [ 70.380530][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.680418][ T12] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 70.691520][ T12] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 70.702701][ T12] bond0 (unregistering): Released all slaves [ 70.723743][ T5494] [ 70.726126][ T5494] ============================================ [ 70.732393][ T5494] WARNING: possible recursive locking detected [ 70.738574][ T5494] 6.14.0-syzkaller-07422-gacb4f33713b9-dirty #0 Not tainted [ 70.745870][ T5494] -------------------------------------------- [ 70.752151][ T5494] dhcpcd/5494 is trying to acquire lock: [ 70.758584][ T5494] ffff888031928d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 [ 70.767850][ T5494] [ 70.767850][ T5494] but task is already holding lock: [ 70.775239][ T5494] ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 70.784310][ T5494] [ 70.784310][ T5494] other info that might help us debug this: [ 70.792558][ T5494] Possible unsafe locking scenario: [ 70.792558][ T5494] [ 70.800017][ T5494] CPU0 [ 70.803327][ T5494] ---- [ 70.806654][ T5494] lock(&dev->lock); [ 70.810660][ T5494] lock(&dev->lock); [ 70.814779][ T5494] [ 70.814779][ T5494] *** DEADLOCK *** [ 70.814779][ T5494] [ 70.822942][ T5494] May be due to missing lock nesting notation [ 70.822942][ T5494] [ 70.831273][ T5494] 2 locks held by dhcpcd/5494: [ 70.836134][ T5494] #0: ffffffff900cf5c8 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 [ 70.845571][ T5494] #1: ffff888029048d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 70.854909][ T5494] [ 70.854909][ T5494] stack backtrace: [ 70.861028][ T5494] CPU: 0 UID: 0 PID: 5494 Comm: dhcpcd Not tainted 6.14.0-syzkaller-07422-gacb4f33713b9-dirty #0 PREEMPT(full) [ 70.861048][ T5494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 70.861060][ T5494] Call Trace: [ 70.861068][ T5494] [ 70.861075][ T5494] dump_stack_lvl+0x241/0x360 [ 70.861096][ T5494] ? __pfx_dump_stack_lvl+0x10/0x10 [ 70.861111][ T5494] ? __pfx__printk+0x10/0x10 [ 70.861124][ T5494] ? print_lock+0x171/0x1a0 [ 70.861137][ T5494] print_deadlock_bug+0x2be/0x2d0 [ 70.861149][ T5494] validate_chain+0x928/0x24e0 [ 70.861161][ T5494] ? stack_depot_save_flags+0x3a/0x970 [ 70.861177][ T5494] ? look_up_lock_class+0x7b/0x170 [ 70.861193][ T5494] ? register_lock_class+0x54/0x330 [ 70.861210][ T5494] __lock_acquire+0xad5/0xd80 [ 70.861228][ T5494] lock_acquire+0x116/0x2f0 [ 70.861244][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 70.861273][ T5494] __mutex_lock+0x1a5/0x10c0 [ 70.861290][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 70.861308][ T5494] ? ref_tracker_alloc+0x316/0x4c0 [ 70.861322][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 70.861337][ T5494] ? rcu_is_watching+0x15/0xb0 [ 70.861349][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 70.861367][ T5494] ? __raw_spin_lock_init+0x45/0x100 [ 70.861381][ T5494] lapbeth_device_event+0x766/0xa20 [ 70.861399][ T5494] notifier_call_chain+0x1a5/0x3f0 [ 70.861413][ T5494] __dev_notify_flags+0x209/0x410 [ 70.861426][ T5494] ? __pfx___dev_notify_flags+0x10/0x10 [ 70.861437][ T5494] ? __dev_change_flags+0x517/0x700 [ 70.861448][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 70.861463][ T5494] ? __pfx___dev_change_flags+0x10/0x10 [ 70.861474][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 70.861490][ T5494] netif_change_flags+0xf0/0x1a0 [ 70.861502][ T5494] dev_change_flags+0x146/0x270 [ 70.861520][ T5494] devinet_ioctl+0xea4/0x1d80 [ 70.861541][ T5494] ? __pfx_devinet_ioctl+0x10/0x10 [ 70.861558][ T5494] ? get_user_ifreq+0x1bb/0x200 [ 70.861572][ T5494] inet_ioctl+0x3d9/0x4f0 [ 70.861585][ T5494] ? __pfx_inet_ioctl+0x10/0x10 [ 70.861597][ T5494] ? lockdep_hardirqs_on+0x9d/0x150 [ 70.861616][ T5494] ? tomoyo_path_number_perm+0x215/0x790 [ 70.861629][ T5494] sock_do_ioctl+0x15a/0x490 [ 70.861646][ T5494] ? __pfx_sock_do_ioctl+0x10/0x10 [ 70.861661][ T5494] ? fd_install+0x9c/0x4c0 [ 70.861675][ T5494] ? __asan_memset+0x23/0x50 [ 70.861690][ T5494] ? smack_file_ioctl+0x2a7/0x3b0 [ 70.861709][ T5494] sock_ioctl+0x644/0x900 [ 70.861723][ T5494] ? __pfx_sock_ioctl+0x10/0x10 [ 70.861737][ T5494] ? __sys_socket+0x209/0x3c0 [ 70.861756][ T5494] ? __pfx_sock_ioctl+0x10/0x10 [ 70.861770][ T5494] __se_sys_ioctl+0xf1/0x160 [ 70.861787][ T5494] do_syscall_64+0xf3/0x230 [ 70.861803][ T5494] ? clear_bhb_loop+0x45/0xa0 [ 70.861817][ T5494] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.861834][ T5494] RIP: 0033:0x7fd9c5fd0d49 [ 70.861847][ T5494] Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8 [ 70.861857][ T5494] RSP: 002b:00007ffdb24aded8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.861871][ T5494] RAX: ffffffffffffffda RBX: 00007fd9c5f026c0 RCX: 00007fd9c5fd0d49 [ 70.861880][ T5494] RDX: 00007ffdb24be0c8 RSI: 0000000000008914 RDI: 000000000000000e [ 70.861888][ T5494] RBP: 00007ffdb24ce288 R08: 00007ffdb24be088 R09: 00007ffdb24be038 [ 70.861896][ T5494] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 70.861903][ T5494] R13: 00007ffdb24be0c8 R14: 0000000000000028 R15: 0000000000008914 [ 70.861915][ T5494] [ 71.236309][ T54] Bluetooth: hci0: command tx timeout [ 71.275432][ T12] hsr_slave_0: left promiscuous mode [ 71.281546][ T12] hsr_slave_1: left promiscuous mode [ 71.287764][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 71.295331][ T12] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 71.304070][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 71.313996][ T12] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 71.326049][ T12] veth1_macvtap: left promiscuous mode [ 71.332010][ T12] veth0_macvtap: left promiscuous mode [ 71.338664][ T12] veth1_vlan: left promiscuous mode [ 71.344086][ T12] veth0_vlan: left promiscuous mode [ 71.499375][ T12] team0 (unregistering): Port device team_slave_1 removed [ 71.518998][ T12] team0 (unregistering): Port device team_slave_0 removed [ 71.768553][ T5935] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.782330][ T5935] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.800415][ T5935] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.807733][ T1299] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.814222][ T1299] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.827908][ T5935] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.908849][ T5935] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.927794][ T5935] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.939414][ T52] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.946587][ T52] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.960586][ T52] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.967847][ T52] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.100315][ T5935] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.135076][ T5935] veth0_vlan: entered promiscuous mode [ 72.150064][ T5935] veth1_vlan: entered promiscuous mode [ 72.174924][ T5935] veth0_macvtap: entered promiscuous mode [ 72.185557][ T5935] veth1_macvtap: entered promiscuous mode [ 72.204865][ T5935] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.221827][ T5935] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.233244][ T5935] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.243419][ T5935] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.254138][ T5935] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.265046][ T5935] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.303411][ T5935] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 72.328013][ T3439] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.329376][ T5935] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 72.350429][ T3439] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.373018][ T52] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.382317][ T52] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 syzkaller build log: go env (err=) GO111MODULE='auto' GOARCH='amd64' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFLAGS='' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.23.6' GODEBUG='' GOTELEMETRY='local' GOTELEMETRYDIR='/syzkaller/.config/go/telemetry' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='gcc' CXX='g++' CGO_ENABLED='1' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOWORK='' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' PKG_CONFIG='pkg-config' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3336433996=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 89d30d7360d nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=89d30d7360d4a366f8fdf00d6ac56cced7a45b0b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250325-195331'" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"89d30d7360d4a366f8fdf00d6ac56cced7a45b0b\" /usr/bin/ld: /tmp/cc58UvIY.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking