possible deadlock in lapbeth_device_event ============================================ WARNING: possible recursive locking detected 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 Not tainted -------------------------------------------- dhcpcd/5505 is trying to acquire lock: ffff888011f34d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] ffff888011f34d28 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2763 [inline] ffff888011f34d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] ffff888011f34d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 but task is already holding lock: ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:40 [inline] ffff88806376cd28 (&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/5505: #0: ffffffff8fed7108 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #0: ffffffff8fed7108 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34c/0x1d80 net/ipv4/devinet.c:1121 #1: ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] #1: ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:40 [inline] #1: ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 stack backtrace: CPU: 0 UID: 0 PID: 5505 Comm: dhcpcd Not tainted 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 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+0x483/0x620 kernel/locking/lockdep.c:3039 check_deadlock kernel/locking/lockdep.c:3091 [inline] validate_chain+0x15e2/0x5920 kernel/locking/lockdep.c:3893 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 netdev_lock include/linux/netdevice.h:2731 [inline] netif_napi_add_weight include/linux/netdevice.h:2763 [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+0x207/0x400 netif_change_flags+0xf0/0x1a0 net/core/dev.c:9406 dev_change_flags+0x146/0x270 net/core/dev_api.c:68 devinet_ioctl+0xea2/0x1d80 net/ipv4/devinet.c:1200 inet_ioctl+0x3d7/0x4f0 net/ipv4/af_inet.c:1001 sock_do_ioctl+0x158/0x460 net/socket.c:1190 sock_ioctl+0x626/0x8e0 net/socket.c:1309 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f297350ad49 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:00007fff28817ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f297343c6c0 RCX: 00007f297350ad49 RDX: 00007fff288280d8 RSI: 0000000000008914 RDI: 0000000000000005 RBP: 00007fff28838298 R08: 00007fff28828098 R09: 00007fff28828048 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff288280d8 R14: 0000000000000028 R15: 0000000000008914 Warning: Permanently added '10.128.10.26' (ED25519) to the list of known hosts. 2025/03/24 01:14:36 ignoring optional flag "sandboxArg"="0" 2025/03/24 01:14:37 parsed 1 programs [ 66.419311][ T5836] cgroup: Unknown subsys name 'net' [ 66.574307][ T5836] cgroup: Unknown subsys name 'cpuset' [ 66.583108][ T5836] cgroup: Unknown subsys name 'rlimit' [ 67.916008][ T5836] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 70.339524][ T5844] 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. [ 71.407953][ T1086] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.416806][ T1086] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.444499][ T53] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.452554][ T53] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.744806][ T1297] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.751713][ T1297] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.554120][ T5903] chnl_net:caif_netlink_parms(): no params data found [ 72.619508][ T5903] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.627511][ T5903] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.635068][ T5903] bridge_slave_0: entered allmulticast mode [ 72.642206][ T5903] bridge_slave_0: entered promiscuous mode [ 72.658830][ T5903] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.666092][ T5903] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.673837][ T5903] bridge_slave_1: entered allmulticast mode [ 72.680805][ T5903] bridge_slave_1: entered promiscuous mode [ 72.707709][ T5903] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.719497][ T5903] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.744236][ T5903] team0: Port device team_slave_0 added [ 72.752241][ T5903] team0: Port device team_slave_1 added [ 72.774789][ T5903] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.781796][ T5903] 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. [ 72.808349][ T5903] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.822239][ T5903] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.829206][ T5903] 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. [ 72.855300][ T5903] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.896388][ T5903] hsr_slave_0: entered promiscuous mode [ 72.903101][ T5903] hsr_slave_1: entered promiscuous mode [ 72.990472][ T5903] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.002830][ T5903] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.013069][ T5903] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.022888][ T5903] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.044777][ T5903] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.052088][ T5903] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.060060][ T5903] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.067246][ T5903] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.111699][ T5903] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.128513][ T3494] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.138295][ T3494] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.154783][ T5903] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.166841][ T3494] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.174059][ T3494] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.187153][ T53] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.194304][ T53] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.315643][ T5903] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.346873][ T5903] veth0_vlan: entered promiscuous mode [ 73.356543][ T5903] veth1_vlan: entered promiscuous mode [ 73.381015][ T5903] veth0_macvtap: entered promiscuous mode [ 73.389276][ T5903] veth1_macvtap: entered promiscuous mode [ 73.404656][ T5903] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.417503][ T5903] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.428339][ T5903] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.437431][ T5903] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.446725][ T5903] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.456627][ T5903] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.594239][ T5921] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 73.607724][ T5921] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 73.612069][ T53] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.617111][ T5921] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 73.633916][ T5921] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 73.641904][ T5921] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 73.649689][ T5921] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 73.691208][ T53] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.754740][ T53] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.864463][ T53] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2025/03/24 01:14:48 executed programs: 0 [ 74.677132][ T5921] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 74.686463][ T5921] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 74.696682][ T5921] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 74.705891][ T5921] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 74.715476][ T5921] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 74.723160][ T5921] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 74.838987][ T5945] chnl_net:caif_netlink_parms(): no params data found [ 74.891631][ T5945] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.898799][ T5945] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.906350][ T5945] bridge_slave_0: entered allmulticast mode [ 74.913199][ T5945] bridge_slave_0: entered promiscuous mode [ 74.921287][ T5945] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.928394][ T5945] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.936164][ T5945] bridge_slave_1: entered allmulticast mode [ 74.943750][ T5945] bridge_slave_1: entered promiscuous mode [ 74.967587][ T5945] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.979420][ T5945] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.012537][ T5945] team0: Port device team_slave_0 added [ 75.020727][ T5945] team0: Port device team_slave_1 added [ 75.043541][ T5945] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.050765][ T5945] 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. [ 75.077997][ T5945] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.091048][ T5945] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.098028][ T5945] 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. [ 75.124049][ T5945] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.158742][ T5945] hsr_slave_0: entered promiscuous mode [ 75.165513][ T5945] hsr_slave_1: entered promiscuous mode [ 75.171966][ T5945] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.179912][ T5945] Cannot create hsr debugfs directory [ 76.781993][ T5150] Bluetooth: hci0: command tx timeout [ 76.903226][ T53] bridge_slave_1: left allmulticast mode [ 76.909186][ T53] bridge_slave_1: left promiscuous mode [ 76.931676][ T53] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.963418][ T53] bridge_slave_0: left allmulticast mode [ 76.969145][ T53] bridge_slave_0: left promiscuous mode [ 76.990580][ T53] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.544882][ T53] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.555894][ T53] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.566917][ T53] bond0 (unregistering): Released all slaves [ 77.608102][ T5505] [ 77.610483][ T5505] ============================================ [ 77.616648][ T5505] WARNING: possible recursive locking detected [ 77.622792][ T5505] 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 Not tainted [ 77.629898][ T5505] -------------------------------------------- [ 77.636056][ T5505] dhcpcd/5505 is trying to acquire lock: [ 77.641675][ T5505] ffff888011f34d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 [ 77.650904][ T5505] [ 77.650904][ T5505] but task is already holding lock: [ 77.658286][ T5505] ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 77.667170][ T5505] [ 77.667170][ T5505] other info that might help us debug this: [ 77.675224][ T5505] Possible unsafe locking scenario: [ 77.675224][ T5505] [ 77.682664][ T5505] CPU0 [ 77.685930][ T5505] ---- [ 77.689194][ T5505] lock(&dev->lock); [ 77.693169][ T5505] lock(&dev->lock); [ 77.697144][ T5505] [ 77.697144][ T5505] *** DEADLOCK *** [ 77.697144][ T5505] [ 77.705426][ T5505] May be due to missing lock nesting notation [ 77.705426][ T5505] [ 77.713737][ T5505] 2 locks held by dhcpcd/5505: [ 77.718489][ T5505] #0: ffffffff8fed7108 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34c/0x1d80 [ 77.727631][ T5505] #1: ffff88806376cd28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 77.736936][ T5505] [ 77.736936][ T5505] stack backtrace: [ 77.742828][ T5505] CPU: 0 UID: 0 PID: 5505 Comm: dhcpcd Not tainted 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 [ 77.742844][ T5505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 77.742855][ T5505] Call Trace: [ 77.742863][ T5505] [ 77.742870][ T5505] dump_stack_lvl+0x241/0x360 [ 77.742890][ T5505] ? __pfx_dump_stack_lvl+0x10/0x10 [ 77.742904][ T5505] ? __pfx__printk+0x10/0x10 [ 77.742916][ T5505] ? lockdep_unlock+0x16a/0x300 [ 77.742936][ T5505] print_deadlock_bug+0x483/0x620 [ 77.742952][ T5505] validate_chain+0x15e2/0x5920 [ 77.742969][ T5505] ? is_bpf_text_address+0x26/0x2a0 [ 77.742984][ T5505] ? unwind_next_frame+0x18e6/0x22d0 [ 77.743003][ T5505] ? __pfx_validate_chain+0x10/0x10 [ 77.743016][ T5505] ? preempt_count_add+0x93/0x190 [ 77.743033][ T5505] ? is_bpf_text_address+0x285/0x2a0 [ 77.743044][ T5505] ? is_bpf_text_address+0x26/0x2a0 [ 77.743055][ T5505] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 77.743073][ T5505] ? kernel_text_address+0xa7/0xe0 [ 77.743087][ T5505] ? look_up_lock_class+0x77/0x170 [ 77.743106][ T5505] ? register_lock_class+0x102/0x980 [ 77.743125][ T5505] ? __pfx_register_lock_class+0x10/0x10 [ 77.743143][ T5505] ? mark_lock+0x9a/0x360 [ 77.743156][ T5505] __lock_acquire+0x1397/0x2100 [ 77.743178][ T5505] lock_acquire+0x1ed/0x550 [ 77.743195][ T5505] ? lapbeth_device_event+0x766/0xa20 [ 77.743212][ T5505] ? __pfx_lock_acquire+0x10/0x10 [ 77.743230][ T5505] ? __pfx___might_resched+0x10/0x10 [ 77.743250][ T5505] __mutex_lock+0x19c/0x1010 [ 77.743268][ T5505] ? lapbeth_device_event+0x766/0xa20 [ 77.743282][ T5505] ? __asan_memset+0x23/0x50 [ 77.743296][ T5505] ? lapbeth_device_event+0x766/0xa20 [ 77.743309][ T5505] ? __pfx___mutex_lock+0x10/0x10 [ 77.743329][ T5505] ? __raw_spin_lock_init+0x45/0x100 [ 77.743345][ T5505] lapbeth_device_event+0x766/0xa20 [ 77.743359][ T5505] notifier_call_chain+0x1a5/0x3f0 [ 77.743380][ T5505] __dev_notify_flags+0x207/0x400 [ 77.743395][ T5505] ? dev_set_rx_mode+0xb8/0x2e0 [ 77.743409][ T5505] ? __pfx___dev_notify_flags+0x10/0x10 [ 77.743422][ T5505] ? __dev_change_flags+0x515/0x6f0 [ 77.743435][ T5505] ? __pfx___mutex_lock+0x10/0x10 [ 77.743452][ T5505] ? __pfx___dev_change_flags+0x10/0x10 [ 77.743467][ T5505] ? __pfx___mutex_lock+0x10/0x10 [ 77.743484][ T5505] netif_change_flags+0xf0/0x1a0 [ 77.743504][ T5505] dev_change_flags+0x146/0x270 [ 77.743519][ T5505] devinet_ioctl+0xea2/0x1d80 [ 77.743535][ T5505] ? __pfx_devinet_ioctl+0x10/0x10 [ 77.743548][ T5505] ? get_user_ifreq+0x1bb/0x200 [ 77.743566][ T5505] inet_ioctl+0x3d7/0x4f0 [ 77.743583][ T5505] ? __pfx_inet_ioctl+0x10/0x10 [ 77.743599][ T5505] ? tomoyo_path_number_perm+0x5dd/0x770 [ 77.743625][ T5505] sock_do_ioctl+0x158/0x460 [ 77.743644][ T5505] ? __pfx_sock_do_ioctl+0x10/0x10 [ 77.743661][ T5505] ? __pfx_lock_release+0x10/0x10 [ 77.743682][ T5505] sock_ioctl+0x626/0x8e0 [ 77.743699][ T5505] ? __pfx_sock_ioctl+0x10/0x10 [ 77.743716][ T5505] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 77.743735][ T5505] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 77.743754][ T5505] ? __pfx_sock_ioctl+0x10/0x10 [ 77.743770][ T5505] __se_sys_ioctl+0xf5/0x170 [ 77.743786][ T5505] do_syscall_64+0xf3/0x230 [ 77.743805][ T5505] ? clear_bhb_loop+0x35/0x90 [ 77.743824][ T5505] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.743848][ T5505] RIP: 0033:0x7f297350ad49 [ 77.743864][ T5505] 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 [ 77.743874][ T5505] RSP: 002b:00007fff28817ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 77.743888][ T5505] RAX: ffffffffffffffda RBX: 00007f297343c6c0 RCX: 00007f297350ad49 [ 77.743897][ T5505] RDX: 00007fff288280d8 RSI: 0000000000008914 RDI: 0000000000000005 [ 77.743906][ T5505] RBP: 00007fff28838298 R08: 00007fff28828098 R09: 00007fff28828048 [ 77.743914][ T5505] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 77.743922][ T5505] R13: 00007fff288280d8 R14: 0000000000000028 R15: 0000000000008914 [ 77.743934][ T5505] [ 78.176206][ T53] hsr_slave_0: left promiscuous mode [ 78.183049][ T53] hsr_slave_1: left promiscuous mode [ 78.188856][ T53] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.197747][ T53] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.206251][ T53] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.215430][ T53] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.225544][ T53] veth1_macvtap: left promiscuous mode [ 78.232912][ T53] veth0_macvtap: left promiscuous mode [ 78.240511][ T53] veth1_vlan: left promiscuous mode [ 78.245904][ T53] veth0_vlan: left promiscuous mode [ 78.421687][ T53] team0 (unregistering): Port device team_slave_1 removed [ 78.447460][ T53] team0 (unregistering): Port device team_slave_0 removed [ 78.829220][ T5945] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.852918][ T5945] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.863770][ T5150] Bluetooth: hci0: command tx timeout [ 78.877580][ T5945] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.887799][ T5945] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.945951][ T5945] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.965339][ T5945] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.976472][ T1158] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.983636][ T1158] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.997820][ T3474] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.005010][ T3474] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.115995][ T5945] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.146422][ T5945] veth0_vlan: entered promiscuous mode [ 79.158743][ T5945] veth1_vlan: entered promiscuous mode [ 79.179214][ T5945] veth0_macvtap: entered promiscuous mode [ 79.188571][ T5945] veth1_macvtap: entered promiscuous mode [ 79.202646][ T5945] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.217160][ T5945] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.229718][ T5945] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.239176][ T5945] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.249880][ T5945] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.261689][ T5945] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.293055][ T5945] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 79.314702][ T3494] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.324966][ T5945] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 79.333094][ T3494] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.355571][ T3494] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.364541][ T3494] 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/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/syzkaller/jobs/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/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/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-build2551865373=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 831e3629115 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=831e3629115be4f5e68e6e0df3a5b07eed26daa4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250305-205027'" -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=\"831e3629115be4f5e68e6e0df3a5b07eed26daa4\" /usr/bin/ld: /tmp/ccVDFZGF.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