possible deadlock in lapbeth_device_event ============================================ WARNING: possible recursive locking detected 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 Not tainted -------------------------------------------- dhcpcd/5503 is trying to acquire lock: ffff88801d364d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] ffff88801d364d28 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2763 [inline] ffff88801d364d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] ffff88801d364d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 but task is already holding lock: ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:40 [inline] ffff888012be4d28 (&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/5503: #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: ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2731 [inline] #1: ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:40 [inline] #1: ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 stack backtrace: CPU: 0 UID: 0 PID: 5503 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: 0033:0x7f3194719d49 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:00007ffe158f8768 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f319464b6c0 RCX: 00007f3194719d49 RDX: 00007ffe15908958 RSI: 0000000000008914 RDI: 0000000000000008 RBP: 00007ffe15918b18 R08: 00007ffe15908918 R09: 00007ffe159088c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe15908958 R14: 0000000000000028 R15: 0000000000008914 Warning: Permanently added '10.128.1.93' (ED25519) to the list of known hosts. 2025/03/24 04:39:31 ignoring optional flag "sandboxArg"="0" 2025/03/24 04:39:33 parsed 1 programs [ 66.622841][ T5835] cgroup: Unknown subsys name 'net' [ 66.770781][ T5835] cgroup: Unknown subsys name 'cpuset' [ 66.779108][ T5835] cgroup: Unknown subsys name 'rlimit' [ 68.043691][ T5835] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 70.556479][ T5842] 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. [ 71.030260][ T5856] chnl_net:caif_netlink_parms(): no params data found [ 71.101113][ T5856] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.109169][ T5856] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.116461][ T5856] bridge_slave_0: entered allmulticast mode [ 71.124679][ T5856] bridge_slave_0: entered promiscuous mode [ 71.134920][ T5856] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.142488][ T5856] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.150053][ T5856] bridge_slave_1: entered allmulticast mode [ 71.156810][ T5856] bridge_slave_1: entered promiscuous mode [ 71.182060][ T5856] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.193704][ T5856] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.220684][ T5856] team0: Port device team_slave_0 added [ 71.229622][ T5856] team0: Port device team_slave_1 added [ 71.248437][ T5856] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.255398][ T5856] 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. [ 71.281377][ T5856] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.293826][ T5856] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.300908][ T5856] 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. [ 71.327277][ T5856] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.358749][ T5856] hsr_slave_0: entered promiscuous mode [ 71.365100][ T5856] hsr_slave_1: entered promiscuous mode [ 71.457030][ T5856] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.470253][ T5856] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.479510][ T5856] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.491317][ T5856] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.515560][ T5856] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.522800][ T5856] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.530854][ T5856] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.538158][ T5856] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.586821][ T5856] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.605643][ T3001] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.615082][ T3001] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.632551][ T5856] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.647004][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.654198][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.667566][ T62] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.674734][ T62] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.791630][ T1297] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.798306][ T1297] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.803712][ T5856] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.842325][ T5856] veth0_vlan: entered promiscuous mode [ 71.852741][ T5856] veth1_vlan: entered promiscuous mode [ 71.878039][ T5856] veth0_macvtap: entered promiscuous mode [ 71.886607][ T5856] veth1_macvtap: entered promiscuous mode [ 71.903733][ T5856] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.919671][ T5856] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.931191][ T5856] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.940352][ T5856] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.950474][ T5856] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.959606][ T5856] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.090995][ T5856] syz-executor (5856) used greatest stack depth: 18784 bytes left [ 72.126645][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.215432][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.298798][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.385506][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.006682][ T36] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.015199][ T36] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.043615][ T36] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.052381][ T36] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.918293][ T5926] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 73.938575][ T5926] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 73.946615][ T5926] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 73.959944][ T5926] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 73.967904][ T5926] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 73.975271][ T5926] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2025/03/24 04:39:43 executed programs: 0 [ 74.610823][ T5148] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 74.619881][ T5148] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 74.629126][ T5148] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 74.637504][ T5148] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 74.649968][ T5148] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 74.659109][ T5148] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 74.760025][ T5945] chnl_net:caif_netlink_parms(): no params data found [ 74.820383][ T5945] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.827604][ T5945] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.834996][ T5945] bridge_slave_0: entered allmulticast mode [ 74.842546][ T5945] bridge_slave_0: entered promiscuous mode [ 74.850300][ T5945] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.857389][ T5945] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.864820][ T5945] bridge_slave_1: entered allmulticast mode [ 74.871577][ T5945] bridge_slave_1: entered promiscuous mode [ 74.916475][ T5945] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.930242][ T5945] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.963337][ T13] bridge_slave_1: left allmulticast mode [ 74.969317][ T13] bridge_slave_1: left promiscuous mode [ 74.975963][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.990877][ T13] bridge_slave_0: left allmulticast mode [ 74.996554][ T13] bridge_slave_0: left promiscuous mode [ 75.003116][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.270733][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.282128][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.292510][ T13] bond0 (unregistering): Released all slaves [ 75.315802][ T5945] team0: Port device team_slave_0 added [ 75.351777][ T5945] team0: Port device team_slave_1 added [ 75.381947][ T13] hsr_slave_0: left promiscuous mode [ 75.387691][ T13] hsr_slave_1: left promiscuous mode [ 75.395016][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.402568][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.410582][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.419359][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.433422][ T13] veth1_macvtap: left promiscuous mode [ 75.439570][ T13] veth0_macvtap: left promiscuous mode [ 75.445219][ T13] veth1_vlan: left promiscuous mode [ 75.451009][ T13] veth0_vlan: left promiscuous mode [ 75.734914][ T13] team0 (unregistering): Port device team_slave_1 removed [ 75.768537][ T13] team0 (unregistering): Port device team_slave_0 removed [ 76.032445][ T5945] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.039619][ 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. [ 76.074807][ T5945] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.089012][ T5945] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.096176][ 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. [ 76.122322][ T5945] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.176861][ T5945] hsr_slave_0: entered promiscuous mode [ 76.184611][ T5945] hsr_slave_1: entered promiscuous mode [ 76.507114][ T5503] [ 76.509495][ T5503] ============================================ [ 76.515669][ T5503] WARNING: possible recursive locking detected [ 76.521813][ T5503] 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 Not tainted [ 76.528975][ T5503] -------------------------------------------- [ 76.535159][ T5503] dhcpcd/5503 is trying to acquire lock: [ 76.540805][ T5503] ffff88801d364d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 [ 76.550048][ T5503] [ 76.550048][ T5503] but task is already holding lock: [ 76.557511][ T5503] ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 76.566386][ T5503] [ 76.566386][ T5503] other info that might help us debug this: [ 76.574516][ T5503] Possible unsafe locking scenario: [ 76.574516][ T5503] [ 76.582043][ T5503] CPU0 [ 76.585312][ T5503] ---- [ 76.588573][ T5503] lock(&dev->lock); [ 76.592544][ T5503] lock(&dev->lock); [ 76.596507][ T5503] [ 76.596507][ T5503] *** DEADLOCK *** [ 76.596507][ T5503] [ 76.604630][ T5503] May be due to missing lock nesting notation [ 76.604630][ T5503] [ 76.613021][ T5503] 2 locks held by dhcpcd/5503: [ 76.617766][ T5503] #0: ffffffff8fed7108 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34c/0x1d80 [ 76.626895][ T5503] #1: ffff888012be4d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 76.636210][ T5503] [ 76.636210][ T5503] stack backtrace: [ 76.642119][ T5503] CPU: 0 UID: 0 PID: 5503 Comm: dhcpcd Not tainted 6.14.0-rc7-syzkaller-01431-gbfc17c165835 #0 [ 76.642132][ T5503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 76.642141][ T5503] Call Trace: [ 76.642147][ T5503] [ 76.642152][ T5503] dump_stack_lvl+0x241/0x360 [ 76.642169][ T5503] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.642179][ T5503] ? __pfx__printk+0x10/0x10 [ 76.642187][ T5503] ? lockdep_unlock+0x16a/0x300 [ 76.642201][ T5503] print_deadlock_bug+0x483/0x620 [ 76.642212][ T5503] validate_chain+0x15e2/0x5920 [ 76.642224][ T5503] ? is_bpf_text_address+0x26/0x2a0 [ 76.642234][ T5503] ? unwind_next_frame+0x18e6/0x22d0 [ 76.642248][ T5503] ? __pfx_validate_chain+0x10/0x10 [ 76.642257][ T5503] ? preempt_count_add+0x93/0x190 [ 76.642269][ T5503] ? is_bpf_text_address+0x285/0x2a0 [ 76.642277][ T5503] ? is_bpf_text_address+0x26/0x2a0 [ 76.642285][ T5503] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 76.642297][ T5503] ? kernel_text_address+0xa7/0xe0 [ 76.642307][ T5503] ? look_up_lock_class+0x77/0x170 [ 76.642320][ T5503] ? register_lock_class+0x102/0x980 [ 76.642333][ T5503] ? __pfx_register_lock_class+0x10/0x10 [ 76.642346][ T5503] ? mark_lock+0x9a/0x360 [ 76.642355][ T5503] __lock_acquire+0x1397/0x2100 [ 76.642370][ T5503] lock_acquire+0x1ed/0x550 [ 76.642382][ T5503] ? lapbeth_device_event+0x766/0xa20 [ 76.642393][ T5503] ? __pfx_lock_acquire+0x10/0x10 [ 76.642406][ T5503] ? __pfx___might_resched+0x10/0x10 [ 76.642420][ T5503] __mutex_lock+0x19c/0x1010 [ 76.642433][ T5503] ? lapbeth_device_event+0x766/0xa20 [ 76.642442][ T5503] ? __asan_memset+0x23/0x50 [ 76.642452][ T5503] ? lapbeth_device_event+0x766/0xa20 [ 76.642461][ T5503] ? __pfx___mutex_lock+0x10/0x10 [ 76.642475][ T5503] ? __raw_spin_lock_init+0x45/0x100 [ 76.642486][ T5503] lapbeth_device_event+0x766/0xa20 [ 76.642496][ T5503] notifier_call_chain+0x1a5/0x3f0 [ 76.642510][ T5503] __dev_notify_flags+0x207/0x400 [ 76.642521][ T5503] ? dev_set_rx_mode+0xb8/0x2e0 [ 76.642531][ T5503] ? __pfx___dev_notify_flags+0x10/0x10 [ 76.642540][ T5503] ? __dev_change_flags+0x515/0x6f0 [ 76.642550][ T5503] ? __pfx___mutex_lock+0x10/0x10 [ 76.642562][ T5503] ? __pfx___dev_change_flags+0x10/0x10 [ 76.642572][ T5503] ? __pfx___mutex_lock+0x10/0x10 [ 76.642584][ T5503] netif_change_flags+0xf0/0x1a0 [ 76.642595][ T5503] dev_change_flags+0x146/0x270 [ 76.642605][ T5503] devinet_ioctl+0xea2/0x1d80 [ 76.642616][ T5503] ? __pfx_devinet_ioctl+0x10/0x10 [ 76.642625][ T5503] ? get_user_ifreq+0x1bb/0x200 [ 76.642643][ T5503] inet_ioctl+0x3d7/0x4f0 [ 76.642655][ T5503] ? __pfx_inet_ioctl+0x10/0x10 [ 76.642666][ T5503] ? tomoyo_path_number_perm+0x5dd/0x770 [ 76.642684][ T5503] sock_do_ioctl+0x158/0x460 [ 76.642697][ T5503] ? __pfx_sock_do_ioctl+0x10/0x10 [ 76.642710][ T5503] ? __pfx_lock_release+0x10/0x10 [ 76.642724][ T5503] sock_ioctl+0x626/0x8e0 [ 76.642736][ T5503] ? __pfx_sock_ioctl+0x10/0x10 [ 76.642748][ T5503] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 76.642761][ T5503] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 76.642774][ T5503] ? __pfx_sock_ioctl+0x10/0x10 [ 76.642785][ T5503] __se_sys_ioctl+0xf5/0x170 [ 76.642796][ T5503] do_syscall_64+0xf3/0x230 [ 76.642809][ T5503] ? clear_bhb_loop+0x35/0x90 [ 76.642821][ T5503] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.642838][ T5503] RIP: 0033:0x7f3194719d49 [ 76.642850][ T5503] 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 [ 76.642858][ T5503] RSP: 002b:00007ffe158f8768 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 76.642869][ T5503] RAX: ffffffffffffffda RBX: 00007f319464b6c0 RCX: 00007f3194719d49 [ 76.642876][ T5503] RDX: 00007ffe15908958 RSI: 0000000000008914 RDI: 0000000000000008 [ 76.642881][ T5503] RBP: 00007ffe15918b18 R08: 00007ffe15908918 R09: 00007ffe159088c8 [ 76.642887][ T5503] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.642893][ T5503] R13: 00007ffe15908958 R14: 0000000000000028 R15: 0000000000008914 [ 76.642902][ T5503] [ 76.747959][ T5148] Bluetooth: hci0: command tx timeout [ 77.164004][ T5945] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.194249][ T5945] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.204036][ T5945] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.214308][ T5945] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.274112][ T5945] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.293081][ T5945] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.304262][ T62] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.311427][ T62] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.337643][ T62] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.344815][ T62] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.459416][ T5945] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.495909][ T5945] veth0_vlan: entered promiscuous mode [ 77.506926][ T5945] veth1_vlan: entered promiscuous mode [ 77.532953][ T5945] veth0_macvtap: entered promiscuous mode [ 77.543226][ T5945] veth1_macvtap: entered promiscuous mode [ 77.561919][ T5945] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.575408][ T5945] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.587655][ T5945] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.596679][ T5945] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.605759][ T5945] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.614829][ T5945] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.638133][ T5945] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 77.657304][ T3509] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.659034][ T5945] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 77.677026][ T3509] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.692966][ T998] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.700992][ T998] 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-build1274158135=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 831e362911 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/ccGiw3PV.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