possible deadlock in lapbeth_device_event ============================================ WARNING: possible recursive locking detected 6.14.0-syzkaller-10167-g93d52288679e #0 Not tainted -------------------------------------------- dhcpcd/5492 is trying to acquire lock: ffff888012474d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff888012474d28 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2783 [inline] ffff888012474d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_new_device drivers/net/wan/lapbether.c:415 [inline] ffff888012474d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 drivers/net/wan/lapbether.c:460 but task is already holding lock: ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff88802b958d28 (&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/5492: #0: ffffffff900d3988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #0: ffffffff900d3988 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 net/ipv4/devinet.c:1121 #1: ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] #1: ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] #1: ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 net/core/dev_api.c:67 stack backtrace: CPU: 1 UID: 0 PID: 5492 Comm: dhcpcd Not tainted 6.14.0-syzkaller-10167-g93d52288679e #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: 0033:0x7f61ad8f5d49 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:00007ffef78b7b48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f61ad8276c0 RCX: 00007f61ad8f5d49 RDX: 00007ffef78c7d38 RSI: 0000000000008914 RDI: 000000000000000e RBP: 00007ffef78d7ef8 R08: 00007ffef78c7cf8 R09: 00007ffef78c7ca8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef78c7d38 R14: 0000000000000028 R15: 0000000000008914 Warning: Permanently added '10.128.1.184' (ED25519) to the list of known hosts. 2025/03/30 02:33:24 ignoring optional flag "sandboxArg"="0" 2025/03/30 02:33:26 parsed 1 programs [ 82.597302][ T5829] cgroup: Unknown subsys name 'net' [ 82.745298][ T5829] cgroup: Unknown subsys name 'cpuset' [ 82.754492][ T5829] cgroup: Unknown subsys name 'rlimit' [ 84.312353][ T5829] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 86.837777][ T5835] 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. [ 87.990965][ T5864] chnl_net:caif_netlink_parms(): no params data found [ 88.065881][ T5864] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.074027][ T5864] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.081458][ T5864] bridge_slave_0: entered allmulticast mode [ 88.088443][ T5864] bridge_slave_0: entered promiscuous mode [ 88.099738][ T5864] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.107406][ T5864] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.114943][ T5864] bridge_slave_1: entered allmulticast mode [ 88.121913][ T5864] bridge_slave_1: entered promiscuous mode [ 88.147226][ T5864] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.178278][ T5864] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.205051][ T5864] team0: Port device team_slave_0 added [ 88.213833][ T5864] team0: Port device team_slave_1 added [ 88.240906][ T5864] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.248946][ T5864] 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. [ 88.276132][ T5864] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 88.292572][ T5864] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 88.299745][ T5864] 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. [ 88.326435][ T5864] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.360404][ T5864] hsr_slave_0: entered promiscuous mode [ 88.367375][ T5864] hsr_slave_1: entered promiscuous mode [ 88.478615][ T5864] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.490120][ T5864] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.499802][ T5864] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.509821][ T5864] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.535238][ T5864] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.542959][ T5864] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.551604][ T5864] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.559527][ T5864] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.610381][ T5864] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.628043][ T3460] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.637927][ T3460] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.654602][ T5864] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.667346][ T3460] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.674752][ T3460] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.687954][ T151] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.695378][ T151] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.827791][ T5864] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.862812][ T5864] veth0_vlan: entered promiscuous mode [ 88.874086][ T5864] veth1_vlan: entered promiscuous mode [ 88.898848][ T5864] veth0_macvtap: entered promiscuous mode [ 88.908040][ T5864] veth1_macvtap: entered promiscuous mode [ 88.929201][ T5864] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.942392][ T5864] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.954676][ T5864] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.964016][ T5864] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.972896][ T5864] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.982085][ T5864] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.105087][ T5864] syz-executor (5864) used greatest stack depth: 19648 bytes left [ 89.129835][ T3460] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.193724][ T3460] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.256042][ T3460] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.314104][ T3460] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.475424][ T55] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 89.484844][ T55] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 89.493785][ T55] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 89.513552][ T55] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 89.522030][ T55] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 90.346417][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 90.360287][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 90.384498][ T1146] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 90.393043][ T1146] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2025/03/30 02:33:38 executed programs: 0 [ 91.362843][ T5138] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 91.372489][ T5138] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 91.380595][ T5138] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 91.389463][ T5138] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 91.397798][ T5138] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 91.509883][ T5935] chnl_net:caif_netlink_parms(): no params data found [ 91.558978][ T5935] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.566729][ T5935] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.574716][ T5935] bridge_slave_0: entered allmulticast mode [ 91.582288][ T5935] bridge_slave_0: entered promiscuous mode [ 91.590036][ T5935] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.597649][ T5935] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.606485][ T5935] bridge_slave_1: entered allmulticast mode [ 91.613712][ T5935] bridge_slave_1: entered promiscuous mode [ 91.638217][ T5935] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.649883][ T5935] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.676720][ T5935] team0: Port device team_slave_0 added [ 91.685427][ T5935] team0: Port device team_slave_1 added [ 91.707314][ T5935] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 91.715213][ 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. [ 91.742486][ T5935] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 91.755167][ T5935] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 91.762589][ 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. [ 91.789216][ T5935] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 91.824427][ T5935] hsr_slave_0: entered promiscuous mode [ 91.831396][ T5935] hsr_slave_1: entered promiscuous mode [ 91.838027][ T5935] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 91.847009][ T5935] Cannot create hsr debugfs directory [ 91.936584][ T3460] bridge_slave_1: left allmulticast mode [ 91.945261][ T3460] bridge_slave_1: left promiscuous mode [ 91.953350][ T3460] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.964737][ T3460] bridge_slave_0: left allmulticast mode [ 91.970605][ T3460] bridge_slave_0: left promiscuous mode [ 91.978405][ T3460] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.133381][ T47] cfg80211: failed to load regulatory.db [ 92.217483][ T3460] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 92.229578][ T3460] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 92.239814][ T3460] bond0 (unregistering): Released all slaves [ 92.350114][ T3460] hsr_slave_0: left promiscuous mode [ 92.356376][ T3460] hsr_slave_1: left promiscuous mode [ 92.368689][ T3460] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 92.376900][ T3460] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 92.387200][ T3460] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 92.396050][ T3460] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 92.414156][ T3460] veth1_macvtap: left promiscuous mode [ 92.420156][ T3460] veth0_macvtap: left promiscuous mode [ 92.428336][ T3460] veth1_vlan: left promiscuous mode [ 92.434073][ T3460] veth0_vlan: left promiscuous mode [ 92.773489][ T3460] team0 (unregistering): Port device team_slave_1 removed [ 92.802090][ T3460] team0 (unregistering): Port device team_slave_0 removed [ 93.030904][ T5492] [ 93.035190][ T5492] ============================================ [ 93.041623][ T5492] WARNING: possible recursive locking detected [ 93.048153][ T5492] 6.14.0-syzkaller-10167-g93d52288679e #0 Not tainted [ 93.054942][ T5492] -------------------------------------------- [ 93.061219][ T5492] dhcpcd/5492 is trying to acquire lock: [ 93.067234][ T5492] ffff888012474d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20 [ 93.076585][ T5492] [ 93.076585][ T5492] but task is already holding lock: [ 93.084143][ T5492] ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 93.093219][ T5492] [ 93.093219][ T5492] other info that might help us debug this: [ 93.101391][ T5492] Possible unsafe locking scenario: [ 93.101391][ T5492] [ 93.109161][ T5492] CPU0 [ 93.112571][ T5492] ---- [ 93.116076][ T5492] lock(&dev->lock); [ 93.120334][ T5492] lock(&dev->lock); [ 93.124337][ T5492] [ 93.124337][ T5492] *** DEADLOCK *** [ 93.124337][ T5492] [ 93.132659][ T5492] May be due to missing lock nesting notation [ 93.132659][ T5492] [ 93.141103][ T5492] 2 locks held by dhcpcd/5492: [ 93.145911][ T5492] #0: ffffffff900d3988 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80 [ 93.155280][ T5492] #1: ffff88802b958d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270 [ 93.165069][ T5492] [ 93.165069][ T5492] stack backtrace: [ 93.171202][ T5492] CPU: 1 UID: 0 PID: 5492 Comm: dhcpcd Not tainted 6.14.0-syzkaller-10167-g93d52288679e #0 PREEMPT(full) [ 93.171227][ T5492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 93.171245][ T5492] Call Trace: [ 93.171252][ T5492] [ 93.171259][ T5492] dump_stack_lvl+0x241/0x360 [ 93.171287][ T5492] ? __pfx_dump_stack_lvl+0x10/0x10 [ 93.171308][ T5492] ? __pfx__printk+0x10/0x10 [ 93.171346][ T5492] ? print_lock+0x171/0x1a0 [ 93.171364][ T5492] print_deadlock_bug+0x2be/0x2d0 [ 93.171383][ T5492] validate_chain+0x928/0x24e0 [ 93.171401][ T5492] ? stack_depot_save_flags+0x3a/0x970 [ 93.171428][ T5492] ? look_up_lock_class+0x7b/0x170 [ 93.171446][ T5492] ? register_lock_class+0x54/0x330 [ 93.171471][ T5492] __lock_acquire+0xad5/0xd80 [ 93.171498][ T5492] lock_acquire+0x116/0x2f0 [ 93.171521][ T5492] ? lapbeth_device_event+0x766/0xa20 [ 93.171543][ T5492] __mutex_lock+0x1a5/0x10c0 [ 93.171560][ T5492] ? lapbeth_device_event+0x766/0xa20 [ 93.171580][ T5492] ? ref_tracker_alloc+0x316/0x4c0 [ 93.171607][ T5492] ? lapbeth_device_event+0x766/0xa20 [ 93.171624][ T5492] ? rcu_is_watching+0x15/0xb0 [ 93.171643][ T5492] ? __pfx___mutex_lock+0x10/0x10 [ 93.171665][ T5492] ? __raw_spin_lock_init+0x45/0x100 [ 93.171687][ T5492] lapbeth_device_event+0x766/0xa20 [ 93.171706][ T5492] notifier_call_chain+0x1a5/0x3f0 [ 93.171726][ T5492] __dev_notify_flags+0x209/0x410 [ 93.171749][ T5492] ? __pfx___dev_notify_flags+0x10/0x10 [ 93.171770][ T5492] ? __dev_change_flags+0x517/0x700 [ 93.171792][ T5492] ? __pfx___mutex_lock+0x10/0x10 [ 93.171809][ T5492] ? __pfx___dev_change_flags+0x10/0x10 [ 93.171831][ T5492] ? __pfx___mutex_lock+0x10/0x10 [ 93.171849][ T5492] netif_change_flags+0xf0/0x1a0 [ 93.171872][ T5492] dev_change_flags+0x146/0x270 [ 93.171894][ T5492] devinet_ioctl+0xea4/0x1d80 [ 93.171922][ T5492] ? __pfx_devinet_ioctl+0x10/0x10 [ 93.171941][ T5492] ? get_user_ifreq+0x1bb/0x200 [ 93.171968][ T5492] inet_ioctl+0x3d9/0x4f0 [ 93.171992][ T5492] ? __pfx_inet_ioctl+0x10/0x10 [ 93.172014][ T5492] ? lockdep_hardirqs_on+0x9d/0x150 [ 93.172037][ T5492] ? tomoyo_path_number_perm+0x215/0x790 [ 93.172059][ T5492] sock_do_ioctl+0x15a/0x490 [ 93.172076][ T5492] ? __pfx_sock_do_ioctl+0x10/0x10 [ 93.172106][ T5492] ? fd_install+0x9c/0x4c0 [ 93.172127][ T5492] ? __asan_memset+0x23/0x50 [ 93.172150][ T5492] ? smack_file_ioctl+0x2a7/0x3b0 [ 93.172168][ T5492] sock_ioctl+0x644/0x900 [ 93.172183][ T5492] ? __pfx_sock_ioctl+0x10/0x10 [ 93.172198][ T5492] ? __sys_socket+0x209/0x3c0 [ 93.172219][ T5492] ? __pfx_sock_ioctl+0x10/0x10 [ 93.172233][ T5492] __se_sys_ioctl+0xf1/0x160 [ 93.172260][ T5492] do_syscall_64+0xf3/0x230 [ 93.172279][ T5492] ? clear_bhb_loop+0x45/0xa0 [ 93.172296][ T5492] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.172318][ T5492] RIP: 0033:0x7f61ad8f5d49 [ 93.172337][ T5492] 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 [ 93.172351][ T5492] RSP: 002b:00007ffef78b7b48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 93.172370][ T5492] RAX: ffffffffffffffda RBX: 00007f61ad8276c0 RCX: 00007f61ad8f5d49 [ 93.172382][ T5492] RDX: 00007ffef78c7d38 RSI: 0000000000008914 RDI: 000000000000000e [ 93.172393][ T5492] RBP: 00007ffef78d7ef8 R08: 00007ffef78c7cf8 R09: 00007ffef78c7ca8 [ 93.172406][ T5492] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 93.172416][ T5492] R13: 00007ffef78c7d38 R14: 0000000000000028 R15: 0000000000008914 [ 93.172431][ T5492] [ 93.528780][ T5138] Bluetooth: hci0: command tx timeout [ 93.807492][ T5935] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.820241][ T5935] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.830217][ T5935] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.844529][ T5935] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.906272][ T5935] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.922614][ T5935] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.936431][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.943799][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.955701][ T53] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.962960][ T53] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.117966][ T5935] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.162024][ T5935] veth0_vlan: entered promiscuous mode [ 94.173830][ T5935] veth1_vlan: entered promiscuous mode [ 94.196320][ T5935] veth0_macvtap: entered promiscuous mode [ 94.205675][ T5935] veth1_macvtap: entered promiscuous mode [ 94.225325][ T5935] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 94.238271][ T5935] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 94.251312][ T5935] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.260289][ T5935] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.270140][ T5935] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.279140][ T5935] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.309434][ T5935] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 94.336813][ T1146] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.347305][ T5935] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 94.356663][ T1146] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 94.381732][ T1146] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.389776][ T1146] 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-build4018884513=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 16256247d9 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=16256247d9c41cf4980c36db3841ddd674a04b58 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250310-114935'" -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=\"16256247d9c41cf4980c36db3841ddd674a04b58\" /usr/bin/ld: /tmp/ccLoRIW5.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