possible deadlock in lapbeth_device_event ============================================ WARNING: possible recursive locking detected 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 Not tainted -------------------------------------------- dhcpcd/5494 is trying to acquire lock: ffff888032890d30 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff888032890d30 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2783 [inline] ffff888032890d30 (&dev->lock){+.+.}-{4:4}, at: lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] ffff888032890d30 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 but task is already holding lock: ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff888073e4cd30 (&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: ffffffff900e0d48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #0: ffffffff900e0d48 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 net/ipv4/devinet.c:1121 #1: ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] #1: ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] #1: ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 stack backtrace: CPU: 1 UID: 0 PID: 5494 Comm: dhcpcd Not tainted 6.14.0-syzkaller-10514-g7f2ff7b62617 #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: 0033:0x7f3585d6ed49 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:00007ffe37e130c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3585ca06c0 RCX: 00007f3585d6ed49 RDX: 00007ffe37e232b8 RSI: 0000000000008914 RDI: 0000000000000012 RBP: 00007ffe37e33478 R08: 00007ffe37e23278 R09: 00007ffe37e23228 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe37e232b8 R14: 0000000000000028 R15: 0000000000008914 Warning: Permanently added '10.128.0.32' (ED25519) to the list of known hosts. 2025/03/30 11:39:14 ignoring optional flag "sandboxArg"="0" 2025/03/30 11:39:16 parsed 1 programs [ 62.454088][ T5826] cgroup: Unknown subsys name 'net' [ 62.569935][ T5826] cgroup: Unknown subsys name 'cpuset' [ 62.578163][ T5826] cgroup: Unknown subsys name 'rlimit' [ 63.824352][ T5826] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 66.089122][ 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. [ 66.234160][ T3030] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.246593][ T3030] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.283714][ T66] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.291912][ T66] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.800265][ T56] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 67.808471][ T56] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 67.816146][ T56] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 67.825878][ T56] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 67.833956][ T56] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 68.109854][ T5896] chnl_net:caif_netlink_parms(): no params data found [ 68.162027][ T5896] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.169290][ T5896] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.176489][ T5896] bridge_slave_0: entered allmulticast mode [ 68.184155][ T5896] bridge_slave_0: entered promiscuous mode [ 68.198631][ T5896] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.205989][ T5896] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.213810][ T5896] bridge_slave_1: entered allmulticast mode [ 68.220638][ T5896] bridge_slave_1: entered promiscuous mode [ 68.245282][ T5896] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.256980][ T5896] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.281240][ T5896] team0: Port device team_slave_0 added [ 68.288456][ T5896] team0: Port device team_slave_1 added [ 68.305561][ T5896] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.312629][ T5896] 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. [ 68.340093][ T5896] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.354408][ T5896] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.361585][ T5896] 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. [ 68.388471][ T5896] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.416154][ T5896] hsr_slave_0: entered promiscuous mode [ 68.422417][ T5896] hsr_slave_1: entered promiscuous mode [ 68.500080][ T5896] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.511625][ T5896] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.521240][ T5896] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.530480][ T5896] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.583007][ T5896] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.603620][ T5896] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.614782][ T54] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.622069][ T54] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.636767][ T66] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.643908][ T66] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.748983][ T5896] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.777630][ T5896] veth0_vlan: entered promiscuous mode [ 68.787465][ T5896] veth1_vlan: entered promiscuous mode [ 68.808965][ T5896] veth0_macvtap: entered promiscuous mode [ 68.818715][ T5896] veth1_macvtap: entered promiscuous mode [ 68.832434][ T5896] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.845850][ T5896] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.856264][ T5896] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.865502][ T5896] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.874598][ T5896] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.883711][ T5896] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.001819][ T36] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.059386][ T36] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.136225][ T36] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.219768][ T36] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2025/03/30 11:39:25 executed programs: 0 [ 69.768728][ T5141] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 69.776801][ T5141] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 69.785181][ T5141] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 69.794660][ T5141] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 69.803056][ T5141] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 69.890513][ T5937] chnl_net:caif_netlink_parms(): no params data found [ 69.932124][ T5937] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.939734][ T5937] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.946878][ T5937] bridge_slave_0: entered allmulticast mode [ 69.954145][ T5937] bridge_slave_0: entered promiscuous mode [ 69.961462][ T5937] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.968789][ T5937] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.976004][ T5937] bridge_slave_1: entered allmulticast mode [ 69.983079][ T5937] bridge_slave_1: entered promiscuous mode [ 70.006072][ T5937] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.017012][ T5937] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.039653][ T5937] team0: Port device team_slave_0 added [ 70.047040][ T5937] team0: Port device team_slave_1 added [ 70.065090][ T5937] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.072400][ T5937] 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. [ 70.098748][ T5937] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.110980][ T5937] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.118069][ T5937] 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. [ 70.144442][ T5937] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.178389][ T5937] hsr_slave_0: entered promiscuous mode [ 70.184486][ T5937] hsr_slave_1: entered promiscuous mode [ 70.190621][ T5937] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.198570][ T5937] Cannot create hsr debugfs directory [ 71.510170][ T1298] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.516752][ T1298] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.828064][ T5141] Bluetooth: hci0: command tx timeout [ 72.232052][ T36] bridge_slave_1: left allmulticast mode [ 72.239525][ T36] bridge_slave_1: left promiscuous mode [ 72.246051][ T36] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.263600][ T36] bridge_slave_0: left allmulticast mode [ 72.272255][ T36] bridge_slave_0: left promiscuous mode [ 72.279908][ T36] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.464991][ T36] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.476401][ T36] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.487701][ T36] bond0 (unregistering): Released all slaves [ 72.562736][ T36] hsr_slave_0: left promiscuous mode [ 72.568903][ T36] hsr_slave_1: left promiscuous mode [ 72.574897][ T36] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.584814][ T36] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.594312][ T36] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.607787][ T36] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.627012][ T36] veth1_macvtap: left promiscuous mode [ 72.633451][ T36] veth0_macvtap: left promiscuous mode [ 72.641860][ T36] veth1_vlan: left promiscuous mode [ 72.647964][ T36] veth0_vlan: left promiscuous mode [ 72.946965][ T36] team0 (unregistering): Port device team_slave_1 removed [ 72.975491][ T36] team0 (unregistering): Port device team_slave_0 removed [ 73.176141][ T5494] [ 73.178556][ T5494] ============================================ [ 73.184693][ T5494] WARNING: possible recursive locking detected [ 73.190966][ T5494] 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 Not tainted [ 73.197814][ T5494] -------------------------------------------- [ 73.203950][ T5494] dhcpcd/5494 is trying to acquire lock: [ 73.209590][ T5494] ffff888032890d30 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 [ 73.218819][ T5494] [ 73.218819][ T5494] but task is already holding lock: [ 73.226276][ T5494] ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 73.235373][ T5494] [ 73.235373][ T5494] other info that might help us debug this: [ 73.243597][ T5494] Possible unsafe locking scenario: [ 73.243597][ T5494] [ 73.251046][ T5494] CPU0 [ 73.254337][ T5494] ---- [ 73.257627][ T5494] lock(&dev->lock); [ 73.261599][ T5494] lock(&dev->lock); [ 73.265561][ T5494] [ 73.265561][ T5494] *** DEADLOCK *** [ 73.265561][ T5494] [ 73.273705][ T5494] May be due to missing lock nesting notation [ 73.273705][ T5494] [ 73.282021][ T5494] 2 locks held by dhcpcd/5494: [ 73.286785][ T5494] #0: ffffffff900e0d48 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 [ 73.295942][ T5494] #1: ffff888073e4cd30 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 73.305416][ T5494] [ 73.305416][ T5494] stack backtrace: [ 73.311334][ T5494] CPU: 1 UID: 0 PID: 5494 Comm: dhcpcd Not tainted 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 PREEMPT(full) [ 73.311349][ T5494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 73.311362][ T5494] Call Trace: [ 73.311368][ T5494] [ 73.311373][ T5494] dump_stack_lvl+0x241/0x360 [ 73.311391][ T5494] ? __pfx_dump_stack_lvl+0x10/0x10 [ 73.311403][ T5494] ? __pfx__printk+0x10/0x10 [ 73.311414][ T5494] ? print_lock+0x171/0x1a0 [ 73.311425][ T5494] print_deadlock_bug+0x2be/0x2d0 [ 73.311437][ T5494] validate_chain+0x928/0x24e0 [ 73.311448][ T5494] ? stack_depot_save_flags+0x3a/0x970 [ 73.311462][ T5494] ? look_up_lock_class+0x7b/0x170 [ 73.311476][ T5494] ? register_lock_class+0x54/0x330 [ 73.311490][ T5494] __lock_acquire+0xad5/0xd80 [ 73.311505][ T5494] lock_acquire+0x116/0x2f0 [ 73.311518][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 73.311529][ T5494] __mutex_lock+0x1a5/0x10c0 [ 73.311541][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 73.311550][ T5494] ? ref_tracker_alloc+0x316/0x4c0 [ 73.311564][ T5494] ? lapbeth_device_event+0x766/0xa20 [ 73.311572][ T5494] ? rcu_is_watching+0x15/0xb0 [ 73.311582][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 73.311596][ T5494] ? __raw_spin_lock_init+0x45/0x100 [ 73.311607][ T5494] lapbeth_device_event+0x766/0xa20 [ 73.311617][ T5494] notifier_call_chain+0x1a5/0x3f0 [ 73.311630][ T5494] __dev_notify_flags+0x209/0x410 [ 73.311647][ T5494] ? __pfx___dev_notify_flags+0x10/0x10 [ 73.311657][ T5494] ? __dev_change_flags+0x517/0x700 [ 73.311671][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 73.311683][ T5494] ? __pfx___dev_change_flags+0x10/0x10 [ 73.311694][ T5494] ? __pfx___mutex_lock+0x10/0x10 [ 73.311706][ T5494] netif_change_flags+0xf0/0x1a0 [ 73.311717][ T5494] dev_change_flags+0x146/0x270 [ 73.311728][ T5494] devinet_ioctl+0xea4/0x1d80 [ 73.311740][ T5494] ? __pfx_devinet_ioctl+0x10/0x10 [ 73.311749][ T5494] ? get_user_ifreq+0x1bb/0x200 [ 73.311762][ T5494] inet_ioctl+0x3d9/0x4f0 [ 73.311774][ T5494] ? __pfx_inet_ioctl+0x10/0x10 [ 73.311784][ T5494] ? lockdep_hardirqs_on+0x9d/0x150 [ 73.311798][ T5494] ? tomoyo_path_number_perm+0x215/0x790 [ 73.311810][ T5494] sock_do_ioctl+0x15a/0x490 [ 73.311824][ T5494] ? __pfx_sock_do_ioctl+0x10/0x10 [ 73.311838][ T5494] ? __asan_memset+0x23/0x50 [ 73.311851][ T5494] ? smack_file_ioctl+0x2a7/0x3b0 [ 73.311861][ T5494] sock_ioctl+0x644/0x900 [ 73.311875][ T5494] ? __pfx_sock_ioctl+0x10/0x10 [ 73.311887][ T5494] ? __sys_socket+0x209/0x3c0 [ 73.311897][ T5494] ? __pfx_sock_ioctl+0x10/0x10 [ 73.311909][ T5494] __se_sys_ioctl+0xf1/0x160 [ 73.311924][ T5494] do_syscall_64+0xf3/0x230 [ 73.311937][ T5494] ? clear_bhb_loop+0x45/0xa0 [ 73.311947][ T5494] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.311960][ T5494] RIP: 0033:0x7f3585d6ed49 [ 73.311973][ 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 [ 73.311980][ T5494] RSP: 002b:00007ffe37e130c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.311991][ T5494] RAX: ffffffffffffffda RBX: 00007f3585ca06c0 RCX: 00007f3585d6ed49 [ 73.311998][ T5494] RDX: 00007ffe37e232b8 RSI: 0000000000008914 RDI: 0000000000000012 [ 73.312004][ T5494] RBP: 00007ffe37e33478 R08: 00007ffe37e23278 R09: 00007ffe37e23228 [ 73.312010][ T5494] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 73.312015][ T5494] R13: 00007ffe37e232b8 R14: 0000000000000028 R15: 0000000000008914 [ 73.312023][ T5494] [ 73.807895][ T5937] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.823432][ T5937] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.834055][ T5937] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.843381][ T5937] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.907922][ T5141] Bluetooth: hci0: command tx timeout [ 73.915865][ T5937] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.930205][ T5937] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.944664][ T54] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.951871][ T54] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.960870][ T54] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.968100][ T54] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.046709][ T5937] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.072520][ T5937] veth0_vlan: entered promiscuous mode [ 74.080903][ T5937] veth1_vlan: entered promiscuous mode [ 74.097641][ T5937] veth0_macvtap: entered promiscuous mode [ 74.105491][ T5937] veth1_macvtap: entered promiscuous mode [ 74.117864][ T5937] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.129257][ T5937] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.139713][ T5937] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.148874][ T5937] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.157859][ T5937] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.166674][ T5937] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.191234][ T5937] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 74.206771][ T66] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.208284][ T5937] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 74.221740][ T66] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.236375][ T3030] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.245042][ T3030] 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='/usr/local/go' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.22.7' 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-build3553081266=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at aa47157c8 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=aa47157c8ec3df5a6d16e3866b095c8f91026465 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250131-140626'" -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=\"aa47157c8ec3df5a6d16e3866b095c8f91026465\" /usr/bin/ld: /tmp/ccMJgbQi.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