./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1786279809 <...> DUID 00:04:82:de:1c:d8:54:65:1e:66:46:a5:2a:00:0a:c0:6e:68 forked to background, child pid 5499 [ 48.907349][ T5500] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.919316][ T5500] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts. execve("./syz-executor1786279809", ["./syz-executor1786279809"], 0x7ffc6baece30 /* 10 vars */) = 0 brk(NULL) = 0x55557b131000 brk(0x55557b131e00) = 0x55557b131e00 arch_prctl(ARCH_SET_FS, 0x55557b131480) = 0 set_tid_address(0x55557b131750) = 5835 set_robust_list(0x55557b131760, 24) = 0 rseq(0x55557b131da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1786279809", 4096) = 28 getrandom("\x9c\xfc\xad\x2a\x34\x7a\x25\x5d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b131e00 brk(0x55557b152e00) = 0x55557b152e00 brk(0x55557b153000) = 0x55557b153000 mprotect(0x7ff8c46e1000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7ff8c463b8e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff8c4644810}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7ff8c463b8e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff8c4644810}, NULL, 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5836 attached , child_tidptr=0x55557b131750) = 5836 [pid 5836] set_robust_list(0x55557b131760, 24) = 0 [pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5836] setpgid(0, 0) = 0 [pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1000", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] write(1, "executing program\n", 18executing program ) = 18 [pid 5836] perf_event_open({type=PERF_TYPE_TRACEPOINT, size=PERF_ATTR_SIZE_VER7, config=240, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, 0, -1, 0) = 3 [pid 5836] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=5, insns=0x20000280, license=NULL, log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = -1 EFAULT (Bad address) [pid 5836] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_TRACEPOINT, insn_cnt=5, insns=0x20000280, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 148) = 4 syzkaller login: [ 77.092692][ T5830] [ 77.095150][ T5830] ============================= [ 77.100010][ T5830] [ BUG: Invalid wait context ] [ 77.104858][ T5830] 6.13.0-rc2-syzkaller-ge4c80f69758e #0 Not tainted [ 77.111443][ T5830] ----------------------------- [ 77.116313][ T5830] sshd/5830 is trying to lock: [ 77.121071][ T5830] ffff888022a80958 (&sighand->siglock){-...}-{3:3}, at: __lock_task_sighand+0x149/0x2d0 [ 77.130856][ T5830] other info that might help us debug this: [ 77.136739][ T5830] context-{5:5} [ 77.140214][ T5830] 3 locks held by sshd/5830: [ 77.144796][ T5830] #0: ffffffff8e937a60 (rcu_read_lock_sched){....}-{1:2}, at: __virt_addr_valid+0x183/0x530 [ 77.154994][ T5830] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: trace_call_bpf+0xbc/0x8a0 [ 77.164320][ T5830] #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x29/0x2d0 [ 77.174107][ T5830] stack backtrace: [ 77.177839][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: sshd Not tainted 6.13.0-rc2-syzkaller-ge4c80f69758e #0 [ 77.187478][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 77.197558][ T5830] Call Trace: [ 77.200838][ T5830] [ 77.203770][ T5830] dump_stack_lvl+0x241/0x360 [ 77.208460][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10 [ 77.213663][ T5830] ? __pfx__printk+0x10/0x10 [ 77.218267][ T5830] __lock_acquire+0x15a8/0x2100 [ 77.223143][ T5830] lock_acquire+0x1ed/0x550 [ 77.227647][ T5830] ? __lock_task_sighand+0x149/0x2d0 [ 77.232938][ T5830] ? __pfx_lock_acquire+0x10/0x10 [ 77.237979][ T5830] ? __pfx_lock_acquire+0x10/0x10 [ 77.243032][ T5830] _raw_spin_lock_irqsave+0xd5/0x120 [ 77.248358][ T5830] ? __lock_task_sighand+0x149/0x2d0 [ 77.253654][ T5830] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 77.259559][ T5830] __lock_task_sighand+0x149/0x2d0 [ 77.264681][ T5830] ? __lock_task_sighand+0x29/0x2d0 [ 77.269887][ T5830] group_send_sig_info+0x274/0x310 [ 77.275004][ T5830] ? __pfx_group_send_sig_info+0x10/0x10 [ 77.280654][ T5830] bpf_send_signal_common+0x3c4/0x630 [ 77.286031][ T5830] ? __pfx_bpf_send_signal_common+0x10/0x10 [ 77.291925][ T5830] ? __pfx___cant_migrate+0x10/0x10 [ 77.297130][ T5830] ? __pfx_validate_chain+0x10/0x10 [ 77.302363][ T5830] bpf_send_signal_thread+0x1a/0x30 [ 77.307581][ T5830] bpf_prog_b7be628660dc1b90+0x23/0x29 [ 77.313057][ T5830] trace_call_bpf+0x369/0x8a0 [ 77.317744][ T5830] ? trace_call_bpf+0xbc/0x8a0 [ 77.322546][ T5830] ? __pfx_trace_call_bpf+0x10/0x10 [ 77.327748][ T5830] ? trace_call_bpf+0x613/0x8a0 [ 77.332610][ T5830] perf_trace_run_bpf_submit+0x82/0x180 [ 77.338176][ T5830] perf_trace_lock+0x388/0x490 [ 77.342954][ T5830] ? __lock_acquire+0x1397/0x2100 [ 77.347980][ T5830] ? __pfx_perf_trace_lock+0x10/0x10 [ 77.353452][ T5830] ? __virt_addr_valid+0x183/0x530 [ 77.358581][ T5830] ? __virt_addr_valid+0x183/0x530 [ 77.363708][ T5830] lock_release+0x9cc/0xa30 [ 77.368213][ T5830] ? __pfx_lock_acquire+0x10/0x10 [ 77.373238][ T5830] ? pgd_free+0x141/0x160 [ 77.377577][ T5830] ? __pfx_lock_release+0x10/0x10 [ 77.382608][ T5830] ? do_raw_spin_lock+0x14f/0x370 [ 77.387666][ T5830] ? __virt_addr_valid+0x183/0x530 [ 77.392789][ T5830] __virt_addr_valid+0x42f/0x530 [ 77.397749][ T5830] free_pages+0x15/0x50 [ 77.401905][ T5830] __mmdrop+0xb9/0x3d0 [ 77.405978][ T5830] finish_task_switch+0x304/0x870 [ 77.411007][ T5830] __schedule+0x1858/0x4c30 [ 77.415518][ T5830] ? __pfx_perf_trace_lock+0x10/0x10 [ 77.420817][ T5830] ? __pfx___schedule+0x10/0x10 [ 77.425685][ T5830] ? __pfx_lock_release+0x10/0x10 [ 77.430718][ T5830] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 77.436619][ T5830] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.442515][ T5830] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 77.448855][ T5830] ? schedule+0x90/0x320 [ 77.453100][ T5830] schedule+0x14b/0x320 [ 77.457262][ T5830] schedule_hrtimeout_range_clock+0x191/0x320 [ 77.463329][ T5830] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 77.469224][ T5830] ? __pfx_schedule_hrtimeout_range_clock+0x10/0x10 [ 77.475900][ T5830] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.481796][ T5830] ? __pfx_hrtimer_wakeup+0x10/0x10 [ 77.486998][ T5830] ? __pfx___pollwait+0x10/0x10 [ 77.491862][ T5830] ? pipe_poll+0x2e5/0x4a0 [ 77.496277][ T5830] ? do_sys_poll+0x1026/0x15d0 [ 77.501044][ T5830] do_sys_poll+0x10bd/0x15d0 [ 77.505656][ T5830] ? __pfx_do_sys_poll+0x10/0x10 [ 77.510603][ T5830] ? __pfx_pollwake+0x10/0x10 [ 77.515283][ T5830] ? __pfx_pollwake+0x10/0x10 [ 77.519964][ T5830] ? __pfx_pollwake+0x10/0x10 [ 77.524655][ T5830] ? __pfx_pollwake+0x10/0x10 [ 77.529351][ T5830] ? _raw_spin_unlock_irq+0x23/0x50 [ 77.534650][ T5830] ? lockdep_hardirqs_on+0x99/0x150 [ 77.539852][ T5830] ? _raw_spin_unlock_irq+0x2e/0x50 [ 77.545079][ T5830] ? __pfx_set_user_sigmask+0x10/0x10 [ 77.550477][ T5830] ? __might_fault+0xaa/0x120 [ 77.555165][ T5830] ? __might_fault+0xc6/0x120 [ 77.559850][ T5830] __se_sys_ppoll+0x2a0/0x330 [ 77.564558][ T5830] ? __pfx___se_sys_ppoll+0x10/0x10 [ 77.569780][ T5830] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 77.576130][ T5830] ? do_syscall_64+0x100/0x230 [ 77.581010][ T5830] ? __x64_sys_ppoll+0x20/0xc0 [ 77.585786][ T5830] do_syscall_64+0xf3/0x230 [ 77.590296][ T5830] ? clear_bhb_loop+0x35/0x90 [ 77.594996][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.600910][ T5830] RIP: 0033:0x7fbe84519ad5 [ 77.605337][ T5830] Code: 85 d2 74 0d 0f 10 02 48 8d 54 24 20 0f 11 44 24 20 64 8b 04 25 18 00 00 00 85 c0 75 27 41 b8 08 00 00 00 b8 0f 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 75 48 8b 15 24 73 0d 00 f7 d8 64 89 02 48 83 [ 77.624956][ T5830] RSP: 002b:00007fff664af770 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 77.633392][ T5830] RAX: ffffffffffffffda RBX: 00000000000668a0 RCX: 00007fbe84519ad5 [pid 5836] ioctl(3, PERF_EVENT_IOC_SET_BPF, 4Connection to 10.128.1.72 closed by remote host. [ 77.641368][ T5830] RDX: 00007fff664af790 RSI: 0000000000000004 RDI: 00005573f2f02ae0 [ 77.649443][ T5830] RBP: 00005573f2f015a0 R08: 0000000000000008 R09: 0000000000000000 [ 77.657437][ T5830] R10: 00007fff664af878 R11: 0000000000000246 R12: 00005573ebb90aa4 [ 77.665425][ T5830] R13: 0000000000000001 R14: 00005573ebb913e8 R15: 00007fff664af7f8 [ 77.673411][ T5830] [ 87.016173][ T8] cfg80211: failed to load regulatory.db