./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2865168883 <...> Warning: Permanently added '10.128.0.180' (ED25519) to the list of known hosts. execve("./syz-executor2865168883", ["./syz-executor2865168883"], 0x7ffd116ac130 /* 10 vars */) = 0 brk(NULL) = 0x5555570ce000 brk(0x5555570ced00) = 0x5555570ced00 arch_prctl(ARCH_SET_FS, 0x5555570ce380) = 0 set_tid_address(0x5555570ce650) = 5072 set_robust_list(0x5555570ce660, 24) = 0 rseq(0x5555570ceca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2865168883", 4096) = 28 getrandom("\xc1\x0a\xfa\x49\x34\x84\x68\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555570ced00 brk(0x5555570efd00) = 0x5555570efd00 brk(0x5555570f0000) = 0x5555570f0000 mprotect(0x7f5521210000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5073 attached , child_tidptr=0x5555570ce650) = 5073 [pid 5073] set_robust_list(0x5555570ce660, 24) = 0 [pid 5073] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setsid() = 1 [pid 5073] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5073] unshare(CLONE_NEWNS) = 0 [pid 5073] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5073] unshare(CLONE_NEWIPC) = 0 [pid 5073] unshare(CLONE_NEWCGROUP) = 0 [pid 5073] unshare(CLONE_NEWUTS) = 0 [pid 5073] unshare(CLONE_SYSVSEM) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "16777216", 8) = 8 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "536870912", 9) = 9 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "8192", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5073] close(3) = 0 [pid 5073] getpid() = 1 [pid 5073] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<team_lock_key){+.+.}-{3:3}, at: team_port_change_check+0x51/0x1e0 [ 85.787025][ T5073] [ 85.787025][ T5073] but task is already holding lock: [ 85.794421][ T5073] ffff888077f38d00 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xad/0x2750 [ 85.803950][ T5073] [ 85.803950][ T5073] other info that might help us debug this: [ 85.812101][ T5073] Possible unsafe locking scenario: [ 85.812101][ T5073] [ 85.819543][ T5073] CPU0 [ 85.823601][ T5073] ---- [ 85.826876][ T5073] lock(team->team_lock_key); [ 85.831644][ T5073] lock(team->team_lock_key); [ 85.836408][ T5073] [ 85.836408][ T5073] *** DEADLOCK *** [ 85.836408][ T5073] [ 85.845682][ T5073] May be due to missing lock nesting notation [ 85.845682][ T5073] [ 85.854017][ T5073] 2 locks held by syz-executor286/5073: [ 85.859571][ T5073] #0: ffffffff8f378f88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 [ 85.869109][ T5073] #1: ffff888077f38d00 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xad/0x2750 [ 85.879052][ T5073] [ 85.879052][ T5073] stack backtrace: [ 85.884942][ T5073] CPU: 0 PID: 5073 Comm: syz-executor286 Not tainted 6.8.0-rc6-syzkaller-01978-g885c36e59f46 #0 [ 85.895442][ T5073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 85.905504][ T5073] Call Trace: [ 85.908796][ T5073] [ 85.911949][ T5073] dump_stack_lvl+0x1e7/0x2e0 [ 85.916665][ T5073] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.921874][ T5073] ? print_deadlock_bug+0x479/0x620 [ 85.927077][ T5073] ? _find_first_zero_bit+0xd4/0x100 [ 85.932371][ T5073] validate_chain+0x15c0/0x58e0 [ 85.937230][ T5073] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 85.943157][ T5073] ? __wake_up_common_lock+0x18c/0x1e0 [ 85.948734][ T5073] ? __pfx_validate_chain+0x10/0x10 [ 85.953953][ T5073] ? consume_skb+0xc6/0x160 [ 85.958468][ T5073] ? netlink_broadcast_filtered+0x1259/0x1290 [ 85.964569][ T5073] ? nlmsg_notify+0xfb/0x1c0 [ 85.969172][ T5073] ? nlmsg_notify+0x15a/0x1c0 [ 85.973862][ T5073] ? rtmsg_fib+0x3a3/0x630 [ 85.978287][ T5073] ? mark_lock+0x9a/0x350 [ 85.982636][ T5073] ? __pfx_rtmsg_fib+0x10/0x10 [ 85.987582][ T5073] __lock_acquire+0x1345/0x1fd0 [ 85.992456][ T5073] lock_acquire+0x1e3/0x530 [ 85.997072][ T5073] ? team_port_change_check+0x51/0x1e0 [ 86.002545][ T5073] ? __pfx_lock_acquire+0x10/0x10 [ 86.007594][ T5073] ? neigh_lookup+0xb1/0x500 [ 86.012193][ T5073] ? __pfx___might_resched+0x10/0x10 [ 86.017483][ T5073] ? __pfx_cfg80211_netdev_notifier_call+0x10/0x10 [ 86.024003][ T5073] ? __pfx_arp_key_eq+0x10/0x10 [ 86.028864][ T5073] __mutex_lock+0x136/0xd70 [ 86.033375][ T5073] ? team_port_change_check+0x51/0x1e0 [ 86.038843][ T5073] ? neigh_lookup+0xb1/0x500 [ 86.043441][ T5073] ? __pfx_neigh_lookup+0x10/0x10 [ 86.048469][ T5073] ? bond_netdev_event+0xdd/0xf20 [ 86.053575][ T5073] ? team_port_change_check+0x51/0x1e0 [ 86.059070][ T5073] ? __pfx___mutex_lock+0x10/0x10 [ 86.064121][ T5073] ? __asan_memset+0x23/0x50 [ 86.068746][ T5073] team_port_change_check+0x51/0x1e0 [ 86.074056][ T5073] team_device_event+0x4e6/0x5b0 [ 86.079001][ T5073] ? notifier_call_chain+0x166/0x3b0 [ 86.084301][ T5073] notifier_call_chain+0x18f/0x3b0 [ 86.089428][ T5073] __dev_notify_flags+0x207/0x400 [ 86.094474][ T5073] ? dev_set_rx_mode+0xb8/0x2e0 [ 86.099339][ T5073] ? __pfx___dev_notify_flags+0x10/0x10 [ 86.104923][ T5073] ? __dev_change_flags+0x515/0x6f0 [ 86.110136][ T5073] ? __pfx___dev_change_flags+0x10/0x10 [ 86.115694][ T5073] ? dsa_user_netdevice_event+0x714/0x2970 [ 86.121507][ T5073] dev_change_flags+0xf0/0x1a0 [ 86.126288][ T5073] vlan_device_event+0x1b81/0x1de0 [ 86.131424][ T5073] ? rt6_multipath_rebalance+0x880/0x880 [ 86.137065][ T5073] ? br_device_event+0x148/0x970 [ 86.142012][ T5073] ? __pfx_phonet_device_notify+0x10/0x10 [ 86.147740][ T5073] ? __pfx_vlan_device_event+0x10/0x10 [ 86.153206][ T5073] ? __pfx_br_device_event+0x10/0x10 [ 86.158498][ T5073] ? raw_notifier+0x9d/0x740 [ 86.163094][ T5073] ? isotp_notifier+0xa4/0x6b0 [ 86.167868][ T5073] ? cgw_notifier+0xd8/0x3b0 [ 86.172468][ T5073] ? packet_notifier+0x76/0xa30 [ 86.177342][ T5073] notifier_call_chain+0x18f/0x3b0 [ 86.182563][ T5073] dev_open+0x13a/0x1b0 [ 86.186741][ T5073] ? __pfx_dev_open+0x10/0x10 [ 86.191431][ T5073] ? team_add_slave+0x8a0/0x2750 [ 86.196389][ T5073] team_add_slave+0x9b3/0x2750 [ 86.201184][ T5073] ? __pfx___dev_notify_flags+0x10/0x10 [ 86.206850][ T5073] ? __dev_change_flags+0x515/0x6f0 [ 86.212088][ T5073] ? __pfx_team_add_slave+0x10/0x10 [ 86.217321][ T5073] ? __pfx___dev_change_flags+0x10/0x10 [ 86.222891][ T5073] ? vprintk_emit+0x607/0x720 [ 86.227589][ T5073] ? mutex_is_locked+0x12/0x50 [ 86.232367][ T5073] do_setlink+0xe70/0x41f0 [ 86.236984][ T5073] ? _printk+0xd5/0x120 [ 86.241158][ T5073] ? __nla_validate_parse+0x4e4/0x2f70 [ 86.246635][ T5073] ? __pfx__printk+0x10/0x10 [ 86.251263][ T5073] ? __pfx_do_setlink+0x10/0x10 [ 86.256150][ T5073] ? __nla_validate_parse+0x2599/0x2f70 [ 86.261735][ T5073] ? __pfx___nla_validate_parse+0x10/0x10 [ 86.267472][ T5073] ? __pfx_validate_chain+0x10/0x10 [ 86.272688][ T5073] ? __pfx_lock_acquire+0x10/0x10 [ 86.277727][ T5073] ? validate_linkmsg+0x71e/0x900 [ 86.282896][ T5073] rtnl_setlink+0x40d/0x5a0 [ 86.287409][ T5073] ? mark_lock+0x9a/0x350 [ 86.291924][ T5073] ? __pfx_rtnl_setlink+0x10/0x10 [ 86.297049][ T5073] ? kernel_text_address+0xa7/0xe0 [ 86.302197][ T5073] ? rcu_read_unlock+0x8c/0xa0 [ 86.306982][ T5073] ? __pfx___mutex_lock+0x10/0x10 [ 86.312024][ T5073] ? __pfx_rtnl_setlink+0x10/0x10 [ 86.317052][ T5073] rtnetlink_rcv_msg+0x89b/0x10d0 [ 86.322103][ T5073] ? rtnetlink_rcv_msg+0x208/0x10d0 [ 86.327328][ T5073] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 86.332997][ T5073] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 86.339018][ T5073] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.345392][ T5073] ? __local_bh_enable_ip+0x168/0x200 [ 86.350798][ T5073] ? lockdep_hardirqs_on+0x98/0x140 [ 86.356143][ T5073] ? __local_bh_enable_ip+0x168/0x200 [ 86.361541][ T5073] ? __dev_queue_xmit+0x2c4/0x3b10 [ 86.366749][ T5073] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 86.372529][ T5073] ? __dev_queue_xmit+0x2c4/0x3b10 [ 86.377701][ T5073] ? __dev_queue_xmit+0x15fd/0x3b10 [ 86.382909][ T5073] ? __dev_queue_xmit+0x2c4/0x3b10 [ 86.388119][ T5073] ? ref_tracker_free+0x643/0x7e0 [ 86.393161][ T5073] netlink_rcv_skb+0x1e3/0x430 [ 86.397945][ T5073] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 86.403417][ T5073] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 86.408731][ T5073] ? netlink_deliver_tap+0x2e/0x1b0 [ 86.413948][ T5073] netlink_unicast+0x7ea/0x980 [ 86.418900][ T5073] ? __pfx_netlink_unicast+0x10/0x10 [ 86.424199][ T5073] ? __virt_addr_valid+0x44e/0x520 [ 86.429322][ T5073] ? __phys_addr_symbol+0x2f/0x70 [ 86.434381][ T5073] ? __check_object_size+0x4bb/0xa00 [ 86.439714][ T5073] ? bpf_lsm_netlink_send+0x9/0x10 [ 86.444845][ T5073] netlink_sendmsg+0x8e0/0xcb0 [ 86.449621][ T5073] ? __pfx_netlink_sendmsg+0x10/0x10 [ 86.454912][ T5073] ? aa_sock_msg_perm+0x91/0x160 [ 86.459858][ T5073] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.465169][ T5073] ? security_socket_sendmsg+0x87/0xb0 [ 86.470657][ T5073] ? __pfx_netlink_sendmsg+0x10/0x10 [ 86.475974][ T5073] __sock_sendmsg+0x221/0x270 [ 86.480681][ T5073] sock_write_iter+0x2dd/0x400 [ 86.485458][ T5073] ? __pfx_sock_write_iter+0x10/0x10 [ 86.490760][ T5073] ? __lock_acquire+0x1345/0x1fd0 [ 86.495798][ T5073] do_iter_readv_writev+0x46c/0x640 [ 86.501005][ T5073] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 86.506731][ T5073] ? bpf_lsm_file_permission+0x9/0x10 [ 86.512107][ T5073] ? security_file_permission+0x7f/0xa0 [ 86.517666][ T5073] ? rw_verify_area+0x1d2/0x580 [ 86.522532][ T5073] vfs_writev+0x395/0xbb0 [ 86.526879][ T5073] ? __pfx_vfs_writev+0x10/0x10 [ 86.531750][ T5073] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.538098][ T5073] ? _raw_spin_unlock_irq+0x23/0x50 [ 86.543302][ T5073] ? lockdep_hardirqs_on+0x98/0x140 [ 86.548514][ T5073] ? __fdget_pos+0x1a1/0x320 [ 86.553231][ T5073] do_writev+0x1b1/0x350 [ 86.557500][ T5073] ? __pfx_do_writev+0x10/0x10 [ 86.562273][ T5073] ? do_syscall_64+0x108/0x240 [ 86.567045][ T5073] ? syscall_trace_enter+0x5e/0x150 [ 86.572256][ T5073] do_syscall_64+0xf9/0x240 [ 86.576771][ T5073] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 86.582718][ T5073] RIP: 0033:0x7f5521197a89 [ 86.587140][ T5073] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 86.606839][ T5073] RSP: 002b:00007ffcaa0cf2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 86.615267][ T5073] RAX: ffffffffffffffda RBX: 00007f55211e53d3 RCX: 00007f5521197a89 [ 86.623245][ T5073] RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 [ 86.631237][ T5073] RBP: 00007ffcaa0cf2f0 R08: 0000000000000001 R09: 0000000000000001 [ 86.639225][ T5073] R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffcaa0cf300 [ 86.647203][ T5073] R13: 00007f55211e5004 R14: 00007ffcaa0cf2ec R15: 0000000000000003 [ 86.655185][ T5073] [ 92.498713][ T924] cfg80211: failed to load regulatory.db