./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3543041284 <...> Warning: Permanently added '10.128.1.13' (ED25519) to the list of known hosts. execve("./syz-executor3543041284", ["./syz-executor3543041284"], 0x7ffeda768dd0 /* 10 vars */) = 0 brk(NULL) = 0x555556880000 brk(0x555556880d00) = 0x555556880d00 arch_prctl(ARCH_SET_FS, 0x555556880380) = 0 set_tid_address(0x555556880650) = 5066 set_robust_list(0x555556880660, 24) = 0 rseq(0x555556880ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3543041284", 4096) = 28 getrandom("\x31\x61\x7f\xac\x09\x6d\xee\x9e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556880d00 brk(0x5555568a1d00) = 0x5555568a1d00 brk(0x5555568a2000) = 0x5555568a2000 mprotect(0x7f483b017000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5067 attached , child_tidptr=0x555556880650) = 5067 [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] set_robust_list(0x555556880660, 24) = 0 ./strace-static-x86_64: Process 5068 attached [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5066] <... clone resumed>, child_tidptr=0x555556880650) = 5068 [pid 5068] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5069 attached ) = 0 [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5069 ./strace-static-x86_64: Process 5070 attached ./strace-static-x86_64: Process 5071 attached [pid 5069] <... set_robust_list resumed>) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555556880650) = 5070 [pid 5070] set_robust_list(0x555556880660, 24 [pid 5071] set_robust_list(0x555556880660, 24 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5071 [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... set_robust_list resumed>) = 0 [pid 5071] <... set_robust_list resumed>) = 0 [pid 5069] <... prctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5069] setpgid(0, 0 [pid 5071] <... prctl resumed>) = 0 [pid 5071] setpgid(0, 0./strace-static-x86_64: Process 5073 attached ./strace-static-x86_64: Process 5072 attached ) = 0 [pid 5069] <... setpgid resumed>) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555556880650) = 5073 [pid 5073] set_robust_list(0x555556880660, 24 [pid 5072] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5072 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] <... set_robust_list resumed>) = 0 [pid 5072] <... set_robust_list resumed>) = 0 [pid 5069] <... openat resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] <... openat resumed>) = 3 [pid 5069] write(3, "1000", 4./strace-static-x86_64: Process 5074 attached [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5071] write(3, "1000", 4 [pid 5069] <... write resumed>) = 4 [pid 5066] <... clone resumed>, child_tidptr=0x555556880650) = 5074 [pid 5074] set_robust_list(0x555556880660, 24 [pid 5071] <... write resumed>) = 4 [pid 5069] close(3 [pid 5074] <... set_robust_list resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] close(3 [pid 5069] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5072] <... prctl resumed>) = 0 [pid 5071] <... close resumed>) = 0 ./strace-static-x86_64: Process 5075 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5075 [pid 5072] setpgid(0, 0 [pid 5071] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5076 attached [pid 5075] set_robust_list(0x555556880660, 24 [pid 5072] <... setpgid resumed>) = 0 [pid 5069] <... bpf resumed>) = 3 [pid 5076] set_robust_list(0x555556880660, 24 [pid 5075] <... set_robust_list resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5076 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... bpf resumed>) = 3 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] <... prctl resumed>) = 0 [pid 5072] <... openat resumed>) = 3 [pid 5071] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5076] setpgid(0, 0 [pid 5075] setpgid(0, 0 [pid 5072] write(3, "1000", 4 [pid 5069] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5076] <... setpgid resumed>) = 0 [pid 5075] <... setpgid resumed>) = 0 [pid 5072] <... write resumed>) = 4 [pid 5071] <... bpf resumed>) = 4 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5072] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5072] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5076] <... openat resumed>) = 3 [pid 5075] <... openat resumed>) = 3 [pid 5071] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5069] <... bpf resumed>) = 4 [pid 5076] write(3, "1000", 4 [pid 5075] write(3, "1000", 4 [pid 5072] <... bpf resumed>) = 3 [pid 5071] <... bpf resumed>) = 5 [pid 5069] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5076] <... write resumed>) = 4 [pid 5075] <... write resumed>) = 4 [pid 5072] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5071] perf_event_open( [pid 5076] close(3 [pid 5075] close(3 [pid 5069] <... bpf resumed>) = 5 [pid 5076] <... close resumed>) = 0 [pid 5075] <... close resumed>) = 0 [pid 5076] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5075] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5076] <... bpf resumed>) = 3 [pid 5075] <... bpf resumed>) = 3 [pid 5072] <... bpf resumed>) = 4 [pid 5069] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5072] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5072] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5075] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5076] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5071] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5069] exit_group(0 [pid 5076] <... bpf resumed>) = 4 [pid 5075] <... bpf resumed>) = 4 [pid 5072] exit_group(0 [pid 5075] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5072] <... exit_group resumed>) = ? [pid 5075] perf_event_open( [pid 5076] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5075] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5071] exit_group(0 [pid 5069] <... exit_group resumed>) = ? [pid 5076] <... bpf resumed>) = 5 [pid 5075] exit_group(0 [pid 5071] <... exit_group resumed>) = ? [ 74.250401][ C0] hrtimer: interrupt took 47600 ns [pid 5076] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5075] <... exit_group resumed>) = ? [pid 5069] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] exit_group(0) = ? ./strace-static-x86_64: Process 5077 attached [pid 5077] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5077 [pid 5077] <... set_robust_list resumed>) = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] setpgid(0, 0) = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] +++ exited with 0 +++ [pid 5077] write(3, "1000", 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5077] <... write resumed>) = 4 [pid 5072] +++ exited with 0 +++ [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5077] close(3 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5077] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5078 attached [pid 5077] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5079 attached [pid 5078] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5079 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5078 [pid 5079] set_robust_list(0x555556880660, 24 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5077] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] +++ exited with 0 +++ [pid 5075] +++ exited with 0 +++ [pid 5078] <... prctl resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0 [pid 5079] setpgid(0, 0 [pid 5078] <... setpgid resumed>) = 0 [pid 5077] <... bpf resumed>) = 4 [pid 5079] <... setpgid resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... openat resumed>) = 3 [pid 5077] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5079] <... openat resumed>) = 3 [pid 5078] write(3, "1000", 4 [pid 5079] write(3, "1000", 4 [pid 5078] <... write resumed>) = 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] <... write resumed>) = 4 [pid 5078] close(3 [pid 5079] close(3 [pid 5078] <... close resumed>) = 0 [pid 5079] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached ./strace-static-x86_64: Process 5080 attached [pid 5079] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5078] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5081] set_robust_list(0x555556880660, 24 [pid 5080] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5080 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] <... set_robust_list resumed>) = 0 [pid 5079] <... bpf resumed>) = 3 [pid 5078] <... bpf resumed>) = 3 [pid 5077] <... bpf resumed>) = 5 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5081 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5077] perf_event_open( [pid 5078] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5081] <... prctl resumed>) = 0 [pid 5077] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5079] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5081] setpgid(0, 0 [pid 5080] <... prctl resumed>) = 0 [pid 5079] <... bpf resumed>) = 4 [pid 5077] exit_group(0 [pid 5080] setpgid(0, 0 [pid 5081] <... setpgid resumed>) = 0 [pid 5080] <... setpgid resumed>) = 0 [pid 5079] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5078] <... bpf resumed>) = 4 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] <... exit_group resumed>) = ? [pid 5081] <... openat resumed>) = 3 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] <... bpf resumed>) = 5 [pid 5078] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5080] <... openat resumed>) = 3 [pid 5079] perf_event_open( [pid 5080] write(3, "1000", 4 [pid 5079] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5080] <... write resumed>) = 4 [pid 5081] write(3, "1000", 4 [pid 5080] close(3 [pid 5079] exit_group(0 [pid 5078] <... bpf resumed>) = 5 [pid 5081] <... write resumed>) = 4 [pid 5080] <... close resumed>) = 0 [pid 5081] close(3) = 0 [pid 5080] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5078] perf_event_open( [pid 5081] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5080] <... bpf resumed>) = 3 [pid 5079] <... exit_group resumed>) = ? [pid 5078] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5081] <... bpf resumed>) = 3 [pid 5081] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5078] exit_group(0 [pid 5077] +++ exited with 0 +++ [pid 5080] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5078] <... exit_group resumed>) = ? [pid 5081] <... bpf resumed>) = 4 [pid 5081] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5081] perf_event_open( [pid 5080] <... bpf resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5081] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5080] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] <... bpf resumed>) = 5 [pid 5081] exit_group(0 [pid 5080] perf_event_open(./strace-static-x86_64: Process 5082 attached [pid 5081] <... exit_group resumed>) = ? [pid 5080] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5079] +++ exited with 0 +++ [pid 5078] +++ exited with 0 +++ [pid 5082] set_robust_list(0x555556880660, 24 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5082] <... set_robust_list resumed>) = 0 [pid 5080] exit_group(0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5082 ./strace-static-x86_64: Process 5083 attached [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] set_robust_list(0x555556880660, 24) = 0 [pid 5082] <... prctl resumed>) = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] setpgid(0, 0 [pid 5080] <... exit_group resumed>) = ? [pid 5082] <... setpgid resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5083 [pid 5083] <... prctl resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5083] setpgid(0, 0) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... openat resumed>) = 3 [pid 5082] write(3, "1000", 4./strace-static-x86_64: Process 5084 attached [pid 5083] <... openat resumed>) = 3 [pid 5082] <... write resumed>) = 4 [pid 5084] set_robust_list(0x555556880660, 24 [pid 5082] close(3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5084 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5083] write(3, "1000", 4 [pid 5082] <... close resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] <... write resumed>) = 4 [pid 5084] <... prctl resumed>) = 0 [pid 5082] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5083] close(3) = 0 [pid 5083] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5083] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5084] setpgid(0, 0 [pid 5082] <... bpf resumed>) = 3 [pid 5081] +++ exited with 0 +++ [pid 5080] +++ exited with 0 +++ [pid 5084] <... setpgid resumed>) = 0 [pid 5083] <... bpf resumed>) = 4 [pid 5082] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5082] <... bpf resumed>) = 4 [pid 5084] <... openat resumed>) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5083] <... bpf resumed>) = 5 [pid 5082] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5086 attached ./strace-static-x86_64: Process 5085 attached [pid 5084] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5083] perf_event_open( [pid 5082] <... bpf resumed>) = 5 [pid 5086] set_robust_list(0x555556880660, 24 [pid 5085] set_robust_list(0x555556880660, 24 [pid 5083] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5082] perf_event_open( [pid 5086] <... set_robust_list resumed>) = 0 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5084] <... bpf resumed>) = 3 [pid 5083] exit_group(0 [pid 5082] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5082] exit_group(0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5085 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5086 [pid 5086] <... prctl resumed>) = 0 [pid 5085] <... prctl resumed>) = 0 [pid 5084] <... bpf resumed>) = 4 [pid 5083] <... exit_group resumed>) = ? [pid 5082] <... exit_group resumed>) = ? [pid 5086] setpgid(0, 0 [pid 5085] setpgid(0, 0 [pid 5084] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5086] <... setpgid resumed>) = 0 [pid 5085] <... setpgid resumed>) = 0 [pid 5084] <... bpf resumed>) = 5 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] perf_event_open( [pid 5086] <... openat resumed>) = 3 [pid 5085] <... openat resumed>) = 3 [pid 5084] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5086] write(3, "1000", 4 [pid 5085] write(3, "1000", 4 [pid 5084] exit_group(0 [pid 5086] <... write resumed>) = 4 [pid 5085] <... write resumed>) = 4 [pid 5084] <... exit_group resumed>) = ? [pid 5086] close(3 [pid 5085] close(3) = 0 [pid 5086] <... close resumed>) = 0 [pid 5083] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5085] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5087 ./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x555556880660, 24 [pid 5086] <... bpf resumed>) = 3 [pid 5085] <... bpf resumed>) = 3 [pid 5082] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5087] <... set_robust_list resumed>) = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5087] <... prctl resumed>) = 0 [pid 5086] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] setpgid(0, 0) = 0 [pid 5085] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5088 attached [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] <... bpf resumed>) = 4 [pid 5085] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5088] set_robust_list(0x555556880660, 24 [pid 5087] <... openat resumed>) = 3 [pid 5088] <... set_robust_list resumed>) = 0 [pid 5085] <... bpf resumed>) = 5 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] write(3, "1000", 4 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5088 [pid 5088] <... prctl resumed>) = 0 [pid 5087] <... write resumed>) = 4 [pid 5085] perf_event_open( [pid 5088] setpgid(0, 0 [pid 5087] close(3 [pid 5086] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5085] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5088] <... setpgid resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] <... bpf resumed>) = 5 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5088] <... openat resumed>) = 3 [pid 5086] perf_event_open( [pid 5088] write(3, "1000", 4 [pid 5086] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5088] <... write resumed>) = 4 [pid 5086] exit_group(0 [pid 5085] exit_group(0 [pid 5088] close(3 [pid 5087] <... bpf resumed>) = 3 [pid 5088] <... close resumed>) = 0 [pid 5087] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5086] <... exit_group resumed>) = ? [pid 5088] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5087] <... bpf resumed>) = 4 [pid 5085] <... exit_group resumed>) = ? [pid 5084] +++ exited with 0 +++ [pid 5088] <... bpf resumed>) = 3 [pid 5087] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5087] <... bpf resumed>) = 5 [pid 5088] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5087] perf_event_open( [pid 5088] <... bpf resumed>) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5087] exit_group(0 [pid 5086] +++ exited with 0 +++ ./strace-static-x86_64: Process 5089 attached [pid 5088] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5089] set_robust_list(0x555556880660, 24 [pid 5088] <... bpf resumed>) = 5 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5087] <... exit_group resumed>) = ? [pid 5089] <... set_robust_list resumed>) = 0 [pid 5088] perf_event_open( [pid 5085] +++ exited with 0 +++ [pid 5073] <... restart_syscall resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5089 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5091 attached ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x555556880660, 24 [pid 5091] set_robust_list(0x555556880660, 24) = 0 [pid 5089] <... prctl resumed>) = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... set_robust_list resumed>) = 0 [pid 5089] setpgid(0, 0 [pid 5088] exit_group(0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5090 [pid 5091] <... prctl resumed>) = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5091 [pid 5091] setpgid(0, 0 [pid 5090] <... prctl resumed>) = 0 [pid 5089] <... setpgid resumed>) = 0 [pid 5088] <... exit_group resumed>) = ? [pid 5091] <... setpgid resumed>) = 0 [pid 5090] setpgid(0, 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] <... setpgid resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... openat resumed>) = 3 [pid 5091] <... openat resumed>) = 3 [pid 5090] <... openat resumed>) = 3 [pid 5091] write(3, "1000", 4 [pid 5090] write(3, "1000", 4 [pid 5091] <... write resumed>) = 4 [pid 5090] <... write resumed>) = 4 [pid 5091] close(3 [pid 5090] close(3 [pid 5091] <... close resumed>) = 0 [pid 5091] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5090] <... close resumed>) = 0 [pid 5089] write(3, "1000", 4 [pid 5091] <... bpf resumed>) = 3 [pid 5090] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5089] <... write resumed>) = 4 [pid 5089] close(3 [pid 5090] <... bpf resumed>) = 3 [pid 5089] <... close resumed>) = 0 [pid 5091] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5089] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5091] <... bpf resumed>) = 4 [pid 5090] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5089] <... bpf resumed>) = 3 [pid 5091] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5089] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5090] <... bpf resumed>) = 4 [pid 5089] <... bpf resumed>) = 4 [pid 5090] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5089] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5091] <... bpf resumed>) = 5 [pid 5090] <... bpf resumed>) = 5 [pid 5089] <... bpf resumed>) = 5 [pid 5088] +++ exited with 0 +++ [pid 5087] +++ exited with 0 +++ [pid 5091] perf_event_open( [pid 5090] perf_event_open( [pid 5091] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5090] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5089] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5091] exit_group(0 [pid 5089] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5091] <... exit_group resumed>) = ? [pid 5090] exit_group(0 [pid 5089] exit_group(0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] <... exit_group resumed>) = ? [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5090] <... exit_group resumed>) = ? [pid 5092] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5093 ./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x555556880660, 24) = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] <... set_robust_list resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] write(3, "1000", 4 [pid 5092] <... prctl resumed>) = 0 [pid 5093] <... write resumed>) = 4 [pid 5093] close(3 [pid 5092] setpgid(0, 0 [pid 5093] <... close resumed>) = 0 [pid 5092] <... setpgid resumed>) = 0 [pid 5093] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5093] <... bpf resumed>) = 3 [pid 5092] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5094 attached ) = 4 [pid 5092] write(3, "1000", 4 [pid 5091] +++ exited with 0 +++ [pid 5090] +++ exited with 0 +++ [pid 5094] set_robust_list(0x555556880660, 24 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5094] <... set_robust_list resumed>) = 0 [pid 5092] <... write resumed>) = 4 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5092] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5094 [pid 5094] <... prctl resumed>) = 0 [pid 5092] <... close resumed>) = 0 [pid 5094] setpgid(0, 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5094] <... setpgid resumed>) = 0 [pid 5092] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5095 attached [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5095] set_robust_list(0x555556880660, 24 [pid 5094] <... openat resumed>) = 3 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5095 [pid 5095] <... set_robust_list resumed>) = 0 [pid 5094] write(3, "1000", 4 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] <... write resumed>) = 4 [pid 5095] <... prctl resumed>) = 0 [pid 5095] setpgid(0, 0 [pid 5094] close(3 [pid 5095] <... setpgid resumed>) = 0 [pid 5094] <... close resumed>) = 0 [pid 5092] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5096 attached [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5092] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5096] set_robust_list(0x555556880660, 24 [pid 5095] <... openat resumed>) = 3 [pid 5094] <... bpf resumed>) = 3 [pid 5092] <... bpf resumed>) = 4 [pid 5096] <... set_robust_list resumed>) = 0 [pid 5093] <... bpf resumed>) = 5 [pid 5092] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5096 [pid 5093] perf_event_open( [pid 5095] write(3, "1000", 4 [pid 5093] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5092] <... bpf resumed>) = 5 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5095] <... write resumed>) = 4 [pid 5095] close(3 [pid 5094] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5096] <... prctl resumed>) = 0 [pid 5095] <... close resumed>) = 0 [pid 5093] exit_group(0 [pid 5092] perf_event_open( [pid 5096] setpgid(0, 0 [pid 5095] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5094] <... bpf resumed>) = 4 [pid 5093] <... exit_group resumed>) = ? [pid 5092] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5096] <... setpgid resumed>) = 0 [pid 5095] <... bpf resumed>) = 3 [pid 5095] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5094] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] <... bpf resumed>) = 5 [pid 5094] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5092] exit_group(0 [pid 5096] <... openat resumed>) = 3 [pid 5095] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5094] exit_group(0 [pid 5095] <... bpf resumed>) = 5 [pid 5096] write(3, "1000", 4 [pid 5092] <... exit_group resumed>) = ? [ 75.072783][ T5063] [ 75.075162][ T5063] ============================================ [ 75.081311][ T5063] WARNING: possible recursive locking detected [ 75.087450][ T5063] 6.8.0-rc7-syzkaller-gdf4793505abd #0 Not tainted [ 75.093936][ T5063] -------------------------------------------- [ 75.100070][ T5063] strace-static-x/5063 is trying to acquire lock: [ 75.106468][ T5063] ffffc900096f10d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.116146][ T5063] [ 75.116146][ T5063] but task is already holding lock: [ 75.123501][ T5063] ffffc900098410d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.133157][ T5063] [ 75.133157][ T5063] other info that might help us debug this: [ 75.141207][ T5063] Possible unsafe locking scenario: [ 75.141207][ T5063] [ 75.148645][ T5063] CPU0 [ 75.156368][ T5063] ---- [ 75.159666][ T5063] lock(&rb->spinlock); [ 75.164774][ T5063] lock(&rb->spinlock); [ 75.169105][ T5063] [ 75.169105][ T5063] *** DEADLOCK *** [ 75.169105][ T5063] [ 75.177337][ T5063] May be due to missing lock nesting notation [ 75.177337][ T5063] [ 75.185649][ T5063] 4 locks held by strace-static-x/5063: [ 75.191188][ T5063] #0: ffff88807857e068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x1cc/0x1a40 [ 75.200417][ T5063] #1: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x114/0x420 [ 75.209902][ T5063] #2: ffffc900098410d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.220033][ T5063] #3: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x114/0x420 [ 75.231342][ T5063] [ 75.231342][ T5063] stack backtrace: [ 75.237220][ T5063] CPU: 0 PID: 5063 Comm: strace-static-x Not tainted 6.8.0-rc7-syzkaller-gdf4793505abd #0 [ 75.247106][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 75.257243][ T5063] Call Trace: [ 75.260515][ T5063] [ 75.263529][ T5063] dump_stack_lvl+0x1e7/0x2e0 [ 75.268230][ T5063] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.273438][ T5063] ? print_deadlock_bug+0x479/0x620 [ 75.278636][ T5063] ? _find_first_zero_bit+0xd4/0x100 [ 75.283939][ T5063] validate_chain+0x15c0/0x58e0 [ 75.288905][ T5063] ? kmem_cache_free+0x102/0x2a0 [ 75.293852][ T5063] ? __pfx_validate_chain+0x10/0x10 [ 75.299086][ T5063] ? __pfx_validate_chain+0x10/0x10 [ 75.304281][ T5063] ? __pfx_validate_chain+0x10/0x10 [ 75.309485][ T5063] ? tcp_v4_rcv+0x2d81/0x35c0 [ 75.314171][ T5063] ? __pfx_validate_chain+0x10/0x10 [ 75.319365][ T5063] ? do_raw_spin_lock+0x14e/0x370 [ 75.324488][ T5063] ? validate_chain+0x11b/0x58e0 [ 75.329704][ T5063] ? mark_lock+0x9a/0x350 [ 75.334037][ T5063] ? __pfx_validate_chain+0x10/0x10 [ 75.339237][ T5063] ? mark_lock+0x9a/0x350 [ 75.343649][ T5063] __lock_acquire+0x1345/0x1fd0 [ 75.348518][ T5063] lock_acquire+0x1e3/0x530 [ 75.353023][ T5063] ? __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.358512][ T5063] ? __pfx_lock_acquire+0x10/0x10 [ 75.363561][ T5063] ? __lock_acquire+0x1345/0x1fd0 [ 75.368703][ T5063] ? mark_lock+0x9a/0x350 [ 75.373032][ T5063] ? __lock_acquire+0x1345/0x1fd0 [ 75.378061][ T5063] _raw_spin_lock_irqsave+0xd5/0x120 [ 75.383349][ T5063] ? __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.388814][ T5063] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 75.394716][ T5063] __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.400007][ T5063] ? __pfx_lock_acquire+0x10/0x10 [ 75.405036][ T5063] ? __pfx___bpf_ringbuf_reserve+0x10/0x10 [ 75.410847][ T5063] ? __lock_acquire+0x1345/0x1fd0 [ 75.415962][ T5063] ? __pfx___cant_migrate+0x10/0x10 [ 75.421160][ T5063] bpf_ringbuf_reserve+0x5c/0x70 [ 75.426105][ T5063] bpf_prog_9efe54833449f08e+0x2d/0x47 [ 75.431651][ T5063] bpf_trace_run2+0x204/0x420 [ 75.436327][ T5063] ? bpf_trace_run2+0x114/0x420 [ 75.441347][ T5063] ? __pfx_bpf_trace_run2+0x10/0x10 [ 75.446543][ T5063] ? mark_lock+0x9a/0x350 [ 75.450868][ T5063] ? __pfx___bpf_trace_contention_end+0x10/0x10 [ 75.457106][ T5063] __traceiter_contention_end+0x7b/0xb0 [ 75.462652][ T5063] trace_contention_end+0xf6/0x120 [ 75.472778][ T5063] __pv_queued_spin_lock_slowpath+0x939/0xc60 [ 75.478862][ T5063] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 75.485460][ T5063] queued_spin_lock_slowpath+0x42/0x50 [ 75.490922][ T5063] do_raw_spin_lock+0x271/0x370 [ 75.495780][ T5063] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 75.501152][ T5063] ? __lock_acquire+0x1345/0x1fd0 [ 75.506180][ T5063] _raw_spin_lock_irqsave+0xe1/0x120 [ 75.511466][ T5063] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 75.517366][ T5063] __bpf_ringbuf_reserve+0x211/0x4f0 [ 75.522656][ T5063] ? __pfx_lock_acquire+0x10/0x10 [ 75.527683][ T5063] ? __pfx___bpf_ringbuf_reserve+0x10/0x10 [ 75.533498][ T5063] ? __pfx___cant_migrate+0x10/0x10 [ 75.538696][ T5063] bpf_ringbuf_reserve+0x5c/0x70 [ 75.544163][ T5063] bpf_prog_9efe54833449f08e+0x2d/0x47 [ 75.549702][ T5063] bpf_trace_run2+0x204/0x420 [ 75.554383][ T5063] ? bpf_trace_run2+0x114/0x420 [ 75.559228][ T5063] ? __pfx_bpf_trace_run2+0x10/0x10 [ 75.564420][ T5063] ? __mutex_trylock_common+0x182/0x2e0 [ 75.569985][ T5063] ? __pfx___might_resched+0x10/0x10 [ 75.575271][ T5063] ? __pfx___bpf_trace_contention_end+0x10/0x10 [ 75.581510][ T5063] __traceiter_contention_end+0x7b/0xb0 [ 75.587057][ T5063] trace_contention_end+0xd7/0x100 [ 75.592184][ T5063] __mutex_lock+0x2e4/0xd70 [ 75.596690][ T5063] ? pipe_write+0x1cc/0x1a40 [ 75.601275][ T5063] ? __pfx___mutex_lock+0x10/0x10 [ 75.606291][ T5063] ? aa_file_perm+0x137/0xf60 [ 75.610967][ T5063] pipe_write+0x1cc/0x1a40 [ 75.615380][ T5063] ? mark_lock+0x9a/0x350 [ 75.619708][ T5063] ? __lock_acquire+0x1345/0x1fd0 [ 75.624740][ T5063] ? end_current_label_crit_section+0x14d/0x180 [ 75.630988][ T5063] ? __pfx_pipe_write+0x10/0x10 [ 75.635834][ T5063] ? bpf_lsm_file_permission+0x9/0x10 [ 75.641209][ T5063] ? security_file_permission+0x7f/0xa0 [ 75.646762][ T5063] vfs_write+0xa81/0xcb0 [ 75.651005][ T5063] ? __pfx___might_resched+0x10/0x10 [ 75.656296][ T5063] ? __pfx_vfs_write+0x10/0x10 [ 75.661062][ T5063] ? xfd_validate_state+0x6e/0x150 [ 75.666179][ T5063] ? __fdget_pos+0x1a1/0x320 [ 75.670770][ T5063] ksys_write+0x1a0/0x2c0 [ 75.675129][ T5063] ? __pfx_ksys_write+0x10/0x10 [ 75.679984][ T5063] ? do_syscall_64+0x108/0x240 [ 75.684753][ T5063] ? do_syscall_64+0xb4/0x240 [ 75.689443][ T5063] do_syscall_64+0xf9/0x240 [ 75.693955][ T5063] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 75.699855][ T5063] RIP: 0033:0x4e8593 [ 75.703828][ T5063] Code: c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [pid 5096] <... write resumed>) = 4 [pid 5095] perf_event_open( [pid 5094] <... exit_group resumed>) = ? [pid 5096] close(3 [pid 5095] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5093] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5096] <... close resumed>) = 0 [pid 5095] exit_group(0 [pid 5092] +++ exited with 0 +++ [ 75.723432][ T5063] RSP: 002b:00007ffeda768928 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.731861][ T5063] RAX: ffffffffffffffda RBX: 0000000000000012 RCX: 00000000004e8593 [ 75.739830][ T5063] RDX: 0000000000000012 RSI: 0000000000817140 RDI: 0000000000000002 [ 75.747883][ T5063] RBP: 0000000000817140 R08: 0000000000000010 R09: 0000000000000090 [ 75.755867][ T5063] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000012 [ 75.763923][ T5063] R13: 000000000063f460 R14: 0000000000000012 R15: 0000000000000001 [ 75.771898][ T5063] [pid 5096] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5095] <... exit_group resumed>) = ? [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5096] <... bpf resumed>) = 3 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5096] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5097 attached [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5097 [pid 5096] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5098 attached [pid 5097] set_robust_list(0x555556880660, 24 [pid 5095] +++ exited with 0 +++ [pid 5097] <... set_robust_list resumed>) = 0 [pid 5098] set_robust_list(0x555556880660, 24 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5098] <... set_robust_list resumed>) = 0 [pid 5097] <... prctl resumed>) = 0 [pid 5096] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5097] setpgid(0, 0 [pid 5096] <... bpf resumed>) = 5 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5098 ./strace-static-x86_64: Process 5099 attached [pid 5098] <... prctl resumed>) = 0 [pid 5097] <... setpgid resumed>) = 0 [pid 5096] perf_event_open( [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5096] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5099 [pid 5099] set_robust_list(0x555556880660, 24 [pid 5098] setpgid(0, 0 [pid 5097] <... openat resumed>) = 3 [pid 5098] <... setpgid resumed>) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5099] <... set_robust_list resumed>) = 0 [pid 5097] write(3, "1000", 4) = 4 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5097] close(3 [pid 5099] <... prctl resumed>) = 0 [pid 5097] <... close resumed>) = 0 [pid 5096] exit_group(0 [pid 5099] setpgid(0, 0 [pid 5098] <... openat resumed>) = 3 [pid 5097] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5096] <... exit_group resumed>) = ? [pid 5099] <... setpgid resumed>) = 0 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5097] <... bpf resumed>) = 3 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] +++ exited with 0 +++ [pid 5099] <... openat resumed>) = 3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5098] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5097] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5099] write(3, "1000", 4 [pid 5098] <... bpf resumed>) = 4 [pid 5097] <... bpf resumed>) = 4 [pid 5098] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5100 attached [pid 5099] <... write resumed>) = 4 [pid 5097] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5096] +++ exited with 0 +++ [pid 5100] set_robust_list(0x555556880660, 24 [pid 5099] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5100] <... set_robust_list resumed>) = 0 [pid 5099] <... close resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5100 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5100] <... prctl resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5100] setpgid(0, 0./strace-static-x86_64: Process 5101 attached [pid 5101] set_robust_list(0x555556880660, 24 [pid 5100] <... setpgid resumed>) = 0 [pid 5099] <... bpf resumed>) = 3 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5100] <... openat resumed>) = 3 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5101 [pid 5101] <... prctl resumed>) = 0 [pid 5100] write(3, "1000", 4 [pid 5099] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5101] setpgid(0, 0 [pid 5100] <... write resumed>) = 4 [pid 5101] <... setpgid resumed>) = 0 [pid 5100] close(3 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5100] <... close resumed>) = 0 [pid 5101] <... openat resumed>) = 3 [pid 5100] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5098] <... bpf resumed>) = 5 [pid 5101] write(3, "1000", 4 [pid 5097] <... bpf resumed>) = 5 [pid 5101] <... write resumed>) = 4 [pid 5099] <... bpf resumed>) = 4 [pid 5098] perf_event_open( [pid 5097] perf_event_open( [pid 5099] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5098] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5101] close(3 [pid 5100] <... bpf resumed>) = 3 [pid 5099] <... bpf resumed>) = 5 [pid 5098] exit_group(0 [pid 5097] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5101] <... close resumed>) = 0 [pid 5100] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5099] perf_event_open( [pid 5101] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5099] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5098] <... exit_group resumed>) = ? [pid 5101] <... bpf resumed>) = 3 [pid 5100] <... bpf resumed>) = 4 [pid 5099] exit_group(0 [pid 5098] +++ exited with 0 +++ [pid 5097] exit_group(0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5101] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5100] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5099] <... exit_group resumed>) = ? [pid 5097] <... exit_group resumed>) = ? [pid 5101] <... bpf resumed>) = 4 [pid 5100] <... bpf resumed>) = 5 [pid 5099] +++ exited with 0 +++ [pid 5101] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5100] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5100] exit_group(0./strace-static-x86_64: Process 5102 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5102 [pid 5102] set_robust_list(0x555556880660, 24 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5103 attached [pid 5103] set_robust_list(0x555556880660, 24 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5100] <... exit_group resumed>) = ? [pid 5103] <... set_robust_list resumed>) = 0 [pid 5102] <... prctl resumed>) = 0 [pid 5100] +++ exited with 0 +++ [pid 5097] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5103 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5102] setpgid(0, 0 [pid 5103] <... prctl resumed>) = 0 [pid 5102] <... setpgid resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5103] setpgid(0, 0 [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5103] <... setpgid resumed>) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... restart_syscall resumed>) = 0 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5102] <... openat resumed>) = 3 [pid 5103] <... openat resumed>) = 3 [pid 5102] write(3, "1000", 4 [pid 5103] write(3, "1000", 4 [pid 5102] <... write resumed>) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] <... write resumed>) = 4 [pid 5102] close(3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] close(3 [pid 5102] <... close resumed>) = 0 [pid 5103] <... close resumed>) = 0 ./strace-static-x86_64: Process 5105 attached ./strace-static-x86_64: Process 5104 attached [pid 5103] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5102] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5105] set_robust_list(0x555556880660, 24 [pid 5104] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5105 [pid 5104] <... set_robust_list resumed>) = 0 [pid 5103] <... bpf resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5104 [pid 5105] <... set_robust_list resumed>) = 0 [pid 5102] <... bpf resumed>) = 3 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5103] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5104] <... prctl resumed>) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5103] <... bpf resumed>) = 4 [pid 5101] <... bpf resumed>) = 5 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5104] write(3, "1000", 4 [pid 5103] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5101] perf_event_open( [pid 5105] <... prctl resumed>) = 0 [pid 5104] <... write resumed>) = 4 [pid 5103] <... bpf resumed>) = 5 [pid 5102] <... bpf resumed>) = 4 [pid 5101] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5105] setpgid(0, 0 [pid 5104] close(3 [pid 5102] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5101] exit_group(0 [pid 5105] <... setpgid resumed>) = 0 [pid 5104] <... close resumed>) = 0 [pid 5103] perf_event_open( [pid 5102] <... bpf resumed>) = 5 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5104] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5102] perf_event_open( [pid 5101] <... exit_group resumed>) = ? [pid 5102] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5103] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5102] exit_group(0) = ? [pid 5105] <... openat resumed>) = 3 [pid 5104] <... bpf resumed>) = 3 [pid 5105] write(3, "1000", 4 [pid 5103] exit_group(0 [pid 5101] +++ exited with 0 +++ [pid 5105] <... write resumed>) = 4 [pid 5103] <... exit_group resumed>) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5105] close(3 [pid 5104] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5105] <... close resumed>) = 0 [pid 5105] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5102] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5105] <... bpf resumed>) = 3 [pid 5104] <... bpf resumed>) = 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] +++ exited with 0 +++ [pid 5104] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5106 attached [pid 5105] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5107 attached [pid 5106] set_robust_list(0x555556880660, 24 [pid 5105] <... bpf resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5106 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5107] set_robust_list(0x555556880660, 24 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5107 [pid 5107] <... set_robust_list resumed>) = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5107] <... prctl resumed>) = 0 [pid 5106] <... prctl resumed>) = 0 [pid 5105] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5106] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5108 attached [pid 5107] setpgid(0, 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5108] set_robust_list(0x555556880660, 24 [pid 5107] <... setpgid resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5108 [pid 5108] <... set_robust_list resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5106] <... openat resumed>) = 3 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] <... openat resumed>) = 3 [pid 5106] write(3, "1000", 4 [pid 5108] setpgid(0, 0 [pid 5107] write(3, "1000", 4 [pid 5106] <... write resumed>) = 4 [pid 5108] <... setpgid resumed>) = 0 [pid 5107] <... write resumed>) = 4 [pid 5106] close(3 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5107] close(3 [pid 5106] <... close resumed>) = 0 [pid 5107] <... close resumed>) = 0 [pid 5106] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5108] <... openat resumed>) = 3 [pid 5107] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5108] write(3, "1000", 4 [pid 5106] <... bpf resumed>) = 3 [pid 5107] <... bpf resumed>) = 3 [pid 5108] <... write resumed>) = 4 [pid 5106] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5108] close(3 [pid 5107] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5108] <... close resumed>) = 0 [pid 5106] <... bpf resumed>) = 4 [pid 5108] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5107] <... bpf resumed>) = 4 [pid 5106] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5105] <... bpf resumed>) = 5 [pid 5104] <... bpf resumed>) = 5 [pid 5107] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5106] <... bpf resumed>) = 5 [pid 5105] perf_event_open( [pid 5108] <... bpf resumed>) = 3 [pid 5107] <... bpf resumed>) = 5 [pid 5106] perf_event_open( [pid 5105] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5104] perf_event_open( [pid 5108] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5107] perf_event_open( [pid 5106] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5105] exit_group(0 [pid 5104] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5107] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5105] <... exit_group resumed>) = ? [pid 5108] <... bpf resumed>) = 4 [pid 5107] exit_group(0 [pid 5106] exit_group(0 [pid 5104] exit_group(0 [pid 5108] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5107] <... exit_group resumed>) = ? [pid 5106] <... exit_group resumed>) = ? [pid 5104] <... exit_group resumed>) = ? [pid 5105] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5109 attached , child_tidptr=0x555556880650) = 5109 [pid 5109] set_robust_list(0x555556880660, 24) = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5108] <... bpf resumed>) = 5 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5108] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5109] <... openat resumed>) = 3 [pid 5108] exit_group(0 [pid 5109] write(3, "1000", 4 [pid 5108] <... exit_group resumed>) = ? [pid 5109] <... write resumed>) = 4 [pid 5107] +++ exited with 0 +++ [pid 5106] +++ exited with 0 +++ [pid 5109] close(3) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5109] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5109] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5109] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5111 attached ./strace-static-x86_64: Process 5110 attached [pid 5104] +++ exited with 0 +++ [pid 5108] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5111] set_robust_list(0x555556880660, 24) = 0 [pid 5110] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5110 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5111 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5110] <... set_robust_list resumed>) = 0 [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... restart_syscall resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] <... prctl resumed>) = 0 [pid 5110] <... prctl resumed>) = 0 [pid 5111] setpgid(0, 0 [pid 5110] setpgid(0, 0 [pid 5111] <... setpgid resumed>) = 0 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] <... setpgid resumed>) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5112 attached [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5112 [pid 5112] set_robust_list(0x555556880660, 24 [pid 5111] <... openat resumed>) = 3 [pid 5110] <... openat resumed>) = 3 [pid 5112] <... set_robust_list resumed>) = 0 [pid 5110] write(3, "1000", 4./strace-static-x86_64: Process 5113 attached [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5111] write(3, "1000", 4 [pid 5109] <... bpf resumed>) = 5 [pid 5112] <... prctl resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5113 [pid 5113] set_robust_list(0x555556880660, 24 [pid 5112] setpgid(0, 0 [pid 5111] <... write resumed>) = 4 [pid 5110] <... write resumed>) = 4 [pid 5109] perf_event_open( [pid 5112] <... setpgid resumed>) = 0 [pid 5111] close(3 [pid 5110] close(3 [pid 5113] <... set_robust_list resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5111] <... close resumed>) = 0 [pid 5110] <... close resumed>) = 0 [pid 5109] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5112] <... openat resumed>) = 3 [pid 5111] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5110] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5112] write(3, "1000", 4) = 4 [pid 5112] close(3) = 0 [pid 5112] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5113] <... prctl resumed>) = 0 [pid 5112] <... bpf resumed>) = 3 [pid 5111] <... bpf resumed>) = 3 [pid 5110] <... bpf resumed>) = 3 [pid 5109] exit_group(0 [pid 5113] setpgid(0, 0 [pid 5109] <... exit_group resumed>) = ? [pid 5113] <... setpgid resumed>) = 0 [pid 5110] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5112] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5113] write(3, "1000", 4 [pid 5111] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5110] <... bpf resumed>) = 4 [pid 5109] +++ exited with 0 +++ [pid 5113] <... write resumed>) = 4 [pid 5112] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5111] <... bpf resumed>) = 4 [pid 5110] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5113] close(3 [pid 5111] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5113] <... close resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5114 attached ) = 3 [pid 5110] <... bpf resumed>) = 5 [pid 5113] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5112] <... bpf resumed>) = 5 [pid 5111] <... bpf resumed>) = 5 [pid 5110] perf_event_open( [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5114 [pid 5114] set_robust_list(0x555556880660, 24 [pid 5113] <... bpf resumed>) = 4 [pid 5112] perf_event_open( [pid 5111] perf_event_open( [pid 5110] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5112] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5111] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5114] <... set_robust_list resumed>) = 0 [pid 5112] exit_group(0 [pid 5111] exit_group(0 [pid 5110] exit_group(0 [pid 5112] <... exit_group resumed>) = ? [pid 5113] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5111] <... exit_group resumed>) = ? [pid 5110] <... exit_group resumed>) = ? [pid 5113] <... bpf resumed>) = 5 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5113] perf_event_open( [pid 5114] <... prctl resumed>) = 0 [pid 5113] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5114] setpgid(0, 0 [pid 5113] exit_group(0 [pid 5112] +++ exited with 0 +++ [pid 5114] <... setpgid resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5113] <... exit_group resumed>) = ? [pid 5114] <... openat resumed>) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5115 attached [pid 5114] write(3, "1000", 4 [pid 5111] +++ exited with 0 +++ [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5115 [pid 5115] set_robust_list(0x555556880660, 24 [pid 5114] <... write resumed>) = 4 [pid 5114] close(3 [pid 5115] <... set_robust_list resumed>) = 0 [pid 5114] <... close resumed>) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5114] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5113] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5115] <... prctl resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5115] setpgid(0, 0./strace-static-x86_64: Process 5116 attached ) = 0 [pid 5114] <... bpf resumed>) = 3 [pid 5110] +++ exited with 0 +++ [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5116 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] set_robust_list(0x555556880660, 24) = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5117 attached [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5114] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5117] set_robust_list(0x555556880660, 24 [pid 5116] setpgid(0, 0 [pid 5115] <... openat resumed>) = 3 [pid 5117] <... set_robust_list resumed>) = 0 [pid 5116] <... setpgid resumed>) = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] write(3, "1000", 4 [pid 5114] <... bpf resumed>) = 4 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5117 [pid 5114] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5117] <... prctl resumed>) = 0 [pid 5115] <... write resumed>) = 4 [pid 5114] <... bpf resumed>) = 5 [pid 5116] <... openat resumed>) = 3 [pid 5115] close(3 [pid 5114] perf_event_open( [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5117] setpgid(0, 0 [pid 5116] write(3, "1000", 4 [pid 5115] <... close resumed>) = 0 [pid 5114] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5117] <... setpgid resumed>) = 0 [pid 5115] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5116] <... write resumed>) = 4 ./strace-static-x86_64: Process 5118 attached [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5116] close(3 [pid 5115] <... bpf resumed>) = 3 [pid 5114] exit_group(0 [pid 5118] set_robust_list(0x555556880660, 24 [pid 5117] <... openat resumed>) = 3 [pid 5116] <... close resumed>) = 0 [pid 5114] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5118 [pid 5116] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5117] <... close resumed>) = 0 [pid 5117] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5115] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5117] <... bpf resumed>) = 3 [pid 5115] <... bpf resumed>) = 4 [pid 5117] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5115] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5118] <... prctl resumed>) = 0 [pid 5116] <... bpf resumed>) = 3 [pid 5117] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5117] perf_event_open( [pid 5115] perf_event_open( [pid 5117] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5115] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5118] setpgid(0, 0 [pid 5117] exit_group(0 [pid 5115] exit_group(0 [pid 5118] <... setpgid resumed>) = 0 [pid 5117] <... exit_group resumed>) = ? [pid 5116] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5116] <... bpf resumed>) = 4 [pid 5115] <... exit_group resumed>) = ? [pid 5114] +++ exited with 0 +++ [pid 5118] <... openat resumed>) = 3 [pid 5116] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5118] write(3, "1000", 4 [pid 5116] <... bpf resumed>) = 5 [pid 5118] <... write resumed>) = 4 [pid 5118] close(3) = 0 [pid 5118] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5116] perf_event_open( [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5118] <... bpf resumed>) = 3 [pid 5116] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] exit_group(0 [pid 5118] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5116] <... exit_group resumed>) = ? [pid 5118] <... bpf resumed>) = 4 [pid 5118] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5118] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5119 attached [pid 5118] exit_group(0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5119 [pid 5118] <... exit_group resumed>) = ? [pid 5119] set_robust_list(0x555556880660, 24) = 0 [pid 5117] +++ exited with 0 +++ [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] +++ exited with 0 +++ ./strace-static-x86_64: Process 5120 attached [pid 5120] set_robust_list(0x555556880660, 24 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5119] <... openat resumed>) = 3 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5119] write(3, "1000", 4 [pid 5120] <... set_robust_list resumed>) = 0 [pid 5119] <... write resumed>) = 4 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5120 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5119] close(3 [pid 5120] <... prctl resumed>) = 0 [pid 5119] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5120] setpgid(0, 0 [pid 5119] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5121 attached [pid 5120] <... setpgid resumed>) = 0 [pid 5119] <... bpf resumed>) = 3 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5121 [pid 5121] set_robust_list(0x555556880660, 24 [pid 5120] <... openat resumed>) = 3 [pid 5119] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5118] +++ exited with 0 +++ [pid 5115] +++ exited with 0 +++ [pid 5121] <... set_robust_list resumed>) = 0 [pid 5120] write(3, "1000", 4 [pid 5119] <... bpf resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5120] <... write resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5120] close(3 [pid 5121] <... prctl resumed>) = 0 [pid 5120] <... close resumed>) = 0 [pid 5121] setpgid(0, 0 [pid 5119] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5121] <... setpgid resumed>) = 0 [pid 5120] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5121] write(3, "1000", 4./strace-static-x86_64: Process 5123 attached ./strace-static-x86_64: Process 5122 attached [pid 5120] <... bpf resumed>) = 3 [pid 5119] <... bpf resumed>) = 5 [pid 5123] set_robust_list(0x555556880660, 24 [pid 5122] set_robust_list(0x555556880660, 24 [pid 5121] <... write resumed>) = 4 [pid 5120] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5119] perf_event_open( [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5123 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5122 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5122] <... set_robust_list resumed>) = 0 [pid 5121] close(3 [pid 5120] <... bpf resumed>) = 4 [pid 5119] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5121] <... close resumed>) = 0 [pid 5123] <... prctl resumed>) = 0 [pid 5122] <... prctl resumed>) = 0 [pid 5121] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5123] setpgid(0, 0 [pid 5122] setpgid(0, 0 [pid 5123] <... setpgid resumed>) = 0 [pid 5122] <... setpgid resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5120] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5119] exit_group(0 [pid 5120] <... bpf resumed>) = 5 [pid 5123] <... openat resumed>) = 3 [pid 5122] <... openat resumed>) = 3 [pid 5120] perf_event_open( [pid 5123] write(3, "1000", 4 [pid 5120] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5123] <... write resumed>) = 4 [pid 5122] write(3, "1000", 4 [pid 5121] <... bpf resumed>) = 3 [pid 5123] close(3 [pid 5122] <... write resumed>) = 4 [pid 5123] <... close resumed>) = 0 [pid 5122] close(3 [pid 5120] exit_group(0 [pid 5123] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5122] <... close resumed>) = 0 [pid 5123] <... bpf resumed>) = 3 [pid 5122] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5121] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5120] <... exit_group resumed>) = ? [pid 5119] <... exit_group resumed>) = ? [pid 5123] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5122] <... bpf resumed>) = 3 [pid 5121] <... bpf resumed>) = 4 [pid 5122] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5121] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5123] <... bpf resumed>) = 4 [pid 5122] <... bpf resumed>) = 4 [pid 5122] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5123] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5122] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5121] <... bpf resumed>) = 5 [pid 5121] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5123] <... bpf resumed>) = 5 [pid 5122] exit_group(0 [pid 5121] exit_group(0 [pid 5120] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5123] perf_event_open( [pid 5121] <... exit_group resumed>) = ? [pid 5123] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5122] <... exit_group resumed>) = ? [pid 5123] exit_group(0 [pid 5121] +++ exited with 0 +++ [pid 5119] +++ exited with 0 +++ [pid 5123] <... exit_group resumed>) = ? [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5124 attached [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5124] set_robust_list(0x555556880660, 24) = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5124 [pid 5124] <... prctl resumed>) = 0 [pid 5124] setpgid(0, 0) = 0 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5126 attached ./strace-static-x86_64: Process 5125 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5125 [pid 5124] <... openat resumed>) = 3 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5126 [pid 5126] set_robust_list(0x555556880660, 24 [pid 5125] set_robust_list(0x555556880660, 24) = 0 [pid 5126] <... set_robust_list resumed>) = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5124] write(3, "1000", 4) = 4 [pid 5124] close(3 [pid 5126] <... prctl resumed>) = 0 [pid 5125] setpgid(0, 0 [pid 5124] <... close resumed>) = 0 [pid 5126] setpgid(0, 0 [pid 5125] <... setpgid resumed>) = 0 [pid 5123] +++ exited with 0 +++ [pid 5126] <... setpgid resumed>) = 0 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5125] <... openat resumed>) = 3 [pid 5124] <... bpf resumed>) = 3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5125] write(3, "1000", 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5127 attached [pid 5126] <... openat resumed>) = 3 [pid 5125] <... write resumed>) = 4 [pid 5127] set_robust_list(0x555556880660, 24 [pid 5126] write(3, "1000", 4 [pid 5125] close(3 [pid 5124] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5122] +++ exited with 0 +++ [pid 5127] <... set_robust_list resumed>) = 0 [pid 5126] <... write resumed>) = 4 [pid 5125] <... close resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5127 [pid 5125] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5126] close(3 [pid 5124] <... bpf resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5127] <... prctl resumed>) = 0 [pid 5126] <... close resumed>) = 0 [pid 5124] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5125] <... bpf resumed>) = 3 [pid 5127] setpgid(0, 0 [pid 5126] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5125] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5127] <... setpgid resumed>) = 0 [pid 5126] <... bpf resumed>) = 3 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5126] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5127] <... openat resumed>) = 3 [pid 5125] <... bpf resumed>) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5125] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5128 attached [pid 5127] write(3, "1000", 4 [pid 5126] <... bpf resumed>) = 4 [pid 5125] <... bpf resumed>) = 5 [pid 5124] <... bpf resumed>) = 5 [pid 5128] set_robust_list(0x555556880660, 24 [pid 5127] <... write resumed>) = 4 [pid 5126] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5125] perf_event_open( [pid 5124] perf_event_open( [pid 5128] <... set_robust_list resumed>) = 0 [pid 5127] close(3 [pid 5126] <... bpf resumed>) = 5 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5127] <... close resumed>) = 0 [pid 5126] perf_event_open( [pid 5125] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5124] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5128] <... prctl resumed>) = 0 [pid 5126] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5124] exit_group(0 [pid 5127] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5125] exit_group(0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5128 [pid 5124] <... exit_group resumed>) = ? [pid 5128] setpgid(0, 0 [pid 5127] <... bpf resumed>) = 3 [pid 5126] exit_group(0 [pid 5125] <... exit_group resumed>) = ? [pid 5128] <... setpgid resumed>) = 0 [pid 5124] +++ exited with 0 +++ [pid 5127] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5126] <... exit_group resumed>) = ? [pid 5128] <... openat resumed>) = 3 [pid 5127] <... bpf resumed>) = 4 [pid 5128] write(3, "1000", 4 [pid 5127] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5128] <... write resumed>) = 4 [pid 5128] close(3 [pid 5125] +++ exited with 0 +++ [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5128] <... close resumed>) = 0 [pid 5126] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5129 attached [pid 5128] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5129] set_robust_list(0x555556880660, 24 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5129] <... set_robust_list resumed>) = 0 [pid 5128] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5129 ./strace-static-x86_64: Process 5130 attached [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5127] <... bpf resumed>) = 5 ./strace-static-x86_64: Process 5131 attached [pid 5130] set_robust_list(0x555556880660, 24 [pid 5127] perf_event_open( [pid 5130] <... set_robust_list resumed>) = 0 [pid 5129] <... prctl resumed>) = 0 [pid 5129] setpgid(0, 0 [pid 5127] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5131] set_robust_list(0x555556880660, 24 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5129] <... setpgid resumed>) = 0 [pid 5131] <... set_robust_list resumed>) = 0 [pid 5130] <... prctl resumed>) = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5127] exit_group(0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5131 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5130 [pid 5131] <... prctl resumed>) = 0 [pid 5130] setpgid(0, 0 [pid 5129] <... openat resumed>) = 3 [pid 5128] <... bpf resumed>) = 4 [pid 5127] <... exit_group resumed>) = ? [pid 5131] setpgid(0, 0 [pid 5130] <... setpgid resumed>) = 0 [pid 5128] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5131] <... setpgid resumed>) = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5129] write(3, "1000", 4 [pid 5128] perf_event_open( [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5130] <... openat resumed>) = 3 [pid 5129] <... write resumed>) = 4 [pid 5128] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5129] close(3 [pid 5127] +++ exited with 0 +++ [pid 5131] <... openat resumed>) = 3 [pid 5130] write(3, "1000", 4 [pid 5129] <... close resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5129] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5128] exit_group(0 [pid 5131] write(3, "1000", 4 [pid 5130] <... write resumed>) = 4 [pid 5129] <... bpf resumed>) = 3 [pid 5128] <... exit_group resumed>) = ? [pid 5130] close(3 [pid 5131] <... write resumed>) = 4 [pid 5130] <... close resumed>) = 0 [pid 5131] close(3) = 0 [pid 5130] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5131] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5129] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5132 attached [pid 5131] <... bpf resumed>) = 3 [pid 5130] <... bpf resumed>) = 3 [pid 5129] <... bpf resumed>) = 4 [pid 5132] set_robust_list(0x555556880660, 24) = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0 [pid 5131] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5130] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5129] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5132] <... setpgid resumed>) = 0 [pid 5131] <... bpf resumed>) = 4 [pid 5130] <... bpf resumed>) = 4 [pid 5129] <... bpf resumed>) = 5 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5132 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5131] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5129] perf_event_open( [pid 5131] perf_event_open( [pid 5130] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5129] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5132] <... openat resumed>) = 3 [pid 5131] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5130] <... bpf resumed>) = 5 [pid 5129] exit_group(0 [pid 5132] write(3, "1000", 4) = 4 [pid 5131] exit_group(0 [pid 5130] perf_event_open( [pid 5128] +++ exited with 0 +++ [pid 5132] close(3 [pid 5131] <... exit_group resumed>) = ? [pid 5130] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5129] <... exit_group resumed>) = ? [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5132] <... close resumed>) = 0 [pid 5130] exit_group(0 [pid 5129] +++ exited with 0 +++ [pid 5132] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5130] <... exit_group resumed>) = ? [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5132] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5133 attached ) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5133 [pid 5132] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5134 attached [pid 5133] set_robust_list(0x555556880660, 24) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5134 [pid 5134] set_robust_list(0x555556880660, 24 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5132] <... bpf resumed>) = 5 [pid 5133] <... prctl resumed>) = 0 [pid 5132] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5134] <... set_robust_list resumed>) = 0 [pid 5133] setpgid(0, 0 [pid 5132] exit_group(0) = ? [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5133] <... setpgid resumed>) = 0 [pid 5130] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5134] <... prctl resumed>) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5133] <... openat resumed>) = 3 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5133] write(3, "1000", 4 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5133] <... write resumed>) = 4 ./strace-static-x86_64: Process 5135 attached [pid 5134] <... openat resumed>) = 3 [pid 5133] close(3) = 0 [pid 5133] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5134] write(3, "1000", 4 [pid 5133] <... bpf resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5135 [pid 5134] <... write resumed>) = 4 [pid 5134] close(3) = 0 [pid 5134] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5135] set_robust_list(0x555556880660, 24 [pid 5134] <... bpf resumed>) = 3 [pid 5133] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5135] <... set_robust_list resumed>) = 0 [pid 5134] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5133] <... bpf resumed>) = 4 [pid 5135] <... prctl resumed>) = 0 [pid 5135] setpgid(0, 0 [pid 5133] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5135] <... setpgid resumed>) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] write(3, "1000", 4 [pid 5134] <... bpf resumed>) = 4 [pid 5132] +++ exited with 0 +++ [pid 5131] +++ exited with 0 +++ [pid 5135] <... write resumed>) = 4 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5135] close(3) = 0 [pid 5134] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5135] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5135] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5136 attached [pid 5136] set_robust_list(0x555556880660, 24 [pid 5135] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5137 attached [pid 5136] <... set_robust_list resumed>) = 0 [pid 5135] <... bpf resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5136 [pid 5137] set_robust_list(0x555556880660, 24 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5135] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5137] <... set_robust_list resumed>) = 0 [pid 5136] <... prctl resumed>) = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5137 [pid 5136] setpgid(0, 0 [pid 5137] <... prctl resumed>) = 0 [pid 5136] <... setpgid resumed>) = 0 [pid 5137] setpgid(0, 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5137] <... setpgid resumed>) = 0 [pid 5136] <... openat resumed>) = 3 [pid 5135] <... bpf resumed>) = 5 [pid 5134] <... bpf resumed>) = 5 [pid 5133] <... bpf resumed>) = 5 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5136] write(3, "1000", 4 [pid 5135] perf_event_open( [pid 5134] perf_event_open( [pid 5137] <... openat resumed>) = 3 [pid 5136] <... write resumed>) = 4 [pid 5135] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5134] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5133] perf_event_open( [pid 5137] write(3, "1000", 4 [pid 5136] close(3 [pid 5135] exit_group(0 [pid 5134] exit_group(0 [pid 5133] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5137] <... write resumed>) = 4 [pid 5136] <... close resumed>) = 0 [pid 5135] <... exit_group resumed>) = ? [pid 5133] exit_group(0 [pid 5137] close(3 [pid 5134] <... exit_group resumed>) = ? [pid 5133] <... exit_group resumed>) = ? [pid 5137] <... close resumed>) = 0 [pid 5136] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5137] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5136] <... bpf resumed>) = 3 [pid 5135] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5138 attached [pid 5138] set_robust_list(0x555556880660, 24) = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5138 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5137] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5136] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5134] +++ exited with 0 +++ [pid 5133] +++ exited with 0 +++ [pid 5138] <... openat resumed>) = 3 [pid 5136] <... bpf resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5138] write(3, "1000", 4 [pid 5137] <... bpf resumed>) = 4 [pid 5136] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5138] <... write resumed>) = 4 [pid 5137] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5138] close(3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5138] <... close resumed>) = 0 [pid 5138] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5139 attached ) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5139] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5139 ./strace-static-x86_64: Process 5140 attached [pid 5139] <... set_robust_list resumed>) = 0 [pid 5140] set_robust_list(0x555556880660, 24 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5140] <... set_robust_list resumed>) = 0 [pid 5139] <... prctl resumed>) = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5139] setpgid(0, 0 [pid 5138] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5140 [pid 5140] <... prctl resumed>) = 0 [pid 5139] <... setpgid resumed>) = 0 [pid 5138] <... bpf resumed>) = 4 [pid 5140] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5139] <... openat resumed>) = 3 [pid 5140] <... openat resumed>) = 3 [pid 5138] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5140] write(3, "1000", 4 [pid 5139] write(3, "1000", 4 [pid 5138] <... bpf resumed>) = 5 [pid 5137] <... bpf resumed>) = 5 [pid 5136] <... bpf resumed>) = 5 [pid 5140] <... write resumed>) = 4 [pid 5139] <... write resumed>) = 4 [pid 5137] perf_event_open( [pid 5136] perf_event_open( [pid 5140] close(3 [pid 5139] close(3 [pid 5138] perf_event_open( [pid 5137] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5140] <... close resumed>) = 0 [pid 5139] <... close resumed>) = 0 [pid 5138] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5136] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5140] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5139] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5138] exit_group(0 [pid 5137] exit_group(0 [pid 5136] exit_group(0 [pid 5138] <... exit_group resumed>) = ? [pid 5140] <... bpf resumed>) = 3 [pid 5139] <... bpf resumed>) = 3 [pid 5138] +++ exited with 0 +++ [pid 5137] <... exit_group resumed>) = ? [pid 5136] <... exit_group resumed>) = ? [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5139] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5139] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5141 attached [pid 5140] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5141 [pid 5141] set_robust_list(0x555556880660, 24 [pid 5140] <... bpf resumed>) = 4 [pid 5139] <... bpf resumed>) = 5 [pid 5141] <... set_robust_list resumed>) = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4 [pid 5140] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5139] perf_event_open( [pid 5137] +++ exited with 0 +++ [pid 5136] +++ exited with 0 +++ [pid 5141] <... write resumed>) = 4 [pid 5141] close(3) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5141] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5139] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5140] <... bpf resumed>) = 5 [pid 5141] <... bpf resumed>) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5141] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5142 attached [pid 5140] perf_event_open( [pid 5139] exit_group(0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5142] set_robust_list(0x555556880660, 24 [pid 5141] <... bpf resumed>) = 4 [pid 5142] <... set_robust_list resumed>) = 0 [pid 5140] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5143 attached [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5141] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5139] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5142 [pid 5143] set_robust_list(0x555556880660, 24 [pid 5142] <... prctl resumed>) = 0 [pid 5141] <... bpf resumed>) = 5 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5142] setpgid(0, 0 [pid 5141] perf_event_open( [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5142] <... setpgid resumed>) = 0 [pid 5141] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5143] <... prctl resumed>) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5142] write(3, "1000", 4 [pid 5141] exit_group(0 [pid 5142] <... write resumed>) = 4 [pid 5142] close(3 [pid 5143] <... openat resumed>) = 3 [pid 5142] <... close resumed>) = 0 [pid 5142] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5141] <... exit_group resumed>) = ? [pid 5140] exit_group(0 [pid 5143] write(3, "1000", 4 [pid 5142] <... bpf resumed>) = 3 [pid 5140] <... exit_group resumed>) = ? [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5143 [pid 5143] <... write resumed>) = 4 [pid 5143] close(3) = 0 [pid 5143] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5142] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5143] <... bpf resumed>) = 3 [pid 5142] <... bpf resumed>) = 4 [pid 5143] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5142] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5143] <... bpf resumed>) = 4 [pid 5142] <... bpf resumed>) = 5 [pid 5142] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5142] exit_group(0) = ? [pid 5141] +++ exited with 0 +++ [pid 5143] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5143] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5143] exit_group(0) = ? [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556880650) = 5144 ./strace-static-x86_64: Process 5144 attached [pid 5144] set_robust_list(0x555556880660, 24 [pid 5142] +++ exited with 0 +++ [pid 5139] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5144] <... set_robust_list resumed>) = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5145 attached ) = 3 [pid 5140] +++ exited with 0 +++ [pid 5145] set_robust_list(0x555556880660, 24) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5145 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5145] <... prctl resumed>) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5147 [pid 5145] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5147 attached ./strace-static-x86_64: Process 5146 attached [pid 5145] write(3, "1000", 4 [pid 5144] write(3, "1000", 4 [pid 5143] +++ exited with 0 +++ [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5146 [pid 5147] set_robust_list(0x555556880660, 24 [pid 5146] set_robust_list(0x555556880660, 24 [pid 5145] <... write resumed>) = 4 [pid 5144] <... write resumed>) = 4 [pid 5147] <... set_robust_list resumed>) = 0 [pid 5146] <... set_robust_list resumed>) = 0 [pid 5145] close(3 [pid 5144] close(3 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5145] <... close resumed>) = 0 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5147] <... prctl resumed>) = 0 [pid 5146] <... prctl resumed>) = 0 [pid 5147] setpgid(0, 0 [pid 5146] setpgid(0, 0 [pid 5145] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5144] <... close resumed>) = 0 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5147] <... setpgid resumed>) = 0 [pid 5146] <... setpgid resumed>) = 0 [pid 5145] <... bpf resumed>) = 3 [pid 5144] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5145] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5144] <... bpf resumed>) = 3 [pid 5147] <... openat resumed>) = 3 [pid 5146] <... openat resumed>) = 3 [pid 5147] write(3, "1000", 4 [pid 5146] write(3, "1000", 4 [pid 5147] <... write resumed>) = 4 [pid 5146] <... write resumed>) = 4 [pid 5147] close(3 [pid 5146] close(3 [pid 5147] <... close resumed>) = 0 [pid 5146] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5148 attached [pid 5147] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5146] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5145] <... bpf resumed>) = 4 [pid 5144] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5148] set_robust_list(0x555556880660, 24 [pid 5147] <... bpf resumed>) = 3 [pid 5145] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5144] <... bpf resumed>) = 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5148 [pid 5148] <... set_robust_list resumed>) = 0 [pid 5147] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5146] <... bpf resumed>) = 3 [pid 5145] <... bpf resumed>) = 5 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5147] <... bpf resumed>) = 4 [pid 5145] perf_event_open( [pid 5144] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5146] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5145] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5148] <... prctl resumed>) = 0 [pid 5147] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5144] <... bpf resumed>) = 5 [pid 5148] setpgid(0, 0 [pid 5146] <... bpf resumed>) = 4 [pid 5145] exit_group(0 [pid 5147] <... bpf resumed>) = 5 [pid 5147] perf_event_open( [pid 5148] <... setpgid resumed>) = 0 [pid 5144] perf_event_open( [pid 5145] <... exit_group resumed>) = ? [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5147] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5146] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5144] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5146] <... bpf resumed>) = 5 [pid 5146] perf_event_open( [pid 5148] <... openat resumed>) = 3 [pid 5147] exit_group(0 [pid 5144] exit_group(0 [pid 5146] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5148] write(3, "1000", 4 [pid 5144] <... exit_group resumed>) = ? [pid 5148] <... write resumed>) = 4 [pid 5147] <... exit_group resumed>) = ? [pid 5146] exit_group(0 [pid 5145] +++ exited with 0 +++ [pid 5148] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5148] <... close resumed>) = 0 [pid 5146] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5149 ./strace-static-x86_64: Process 5149 attached [pid 5148] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5149] set_robust_list(0x555556880660, 24 [pid 5144] +++ exited with 0 +++ [pid 5149] <... set_robust_list resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] <... bpf resumed>) = 3 [pid 5147] +++ exited with 0 +++ [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5149] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5150 attached [pid 5148] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5146] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5150] set_robust_list(0x555556880660, 24 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5150 [pid 5150] <... set_robust_list resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] <... bpf resumed>) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5151 attached [pid 5150] write(3, "1000", 4 [pid 5149] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5148] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5152 attached [pid 5151] set_robust_list(0x555556880660, 24 [pid 5150] <... write resumed>) = 4 [pid 5149] <... bpf resumed>) = 5 [pid 5148] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5151 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5152 [pid 5152] set_robust_list(0x555556880660, 24 [pid 5151] <... set_robust_list resumed>) = 0 [pid 5150] close(3 [pid 5148] <... bpf resumed>) = 5 [pid 5152] <... set_robust_list resumed>) = 0 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5150] <... close resumed>) = 0 [pid 5149] perf_event_open( [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5151] <... prctl resumed>) = 0 [pid 5150] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5149] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5148] perf_event_open( [pid 5152] <... prctl resumed>) = 0 [pid 5151] setpgid(0, 0 [pid 5152] setpgid(0, 0) = 0 [pid 5151] <... setpgid resumed>) = 0 [pid 5150] <... bpf resumed>) = 3 [pid 5149] exit_group(0 [pid 5148] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5152] <... openat resumed>) = 3 [pid 5148] exit_group(0 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3 [pid 5151] <... openat resumed>) = 3 [pid 5149] <... exit_group resumed>) = ? [pid 5148] <... exit_group resumed>) = ? [pid 5152] <... close resumed>) = 0 [pid 5150] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5152] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5150] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5150] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5151] write(3, "1000", 4 [pid 5152] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5151] <... write resumed>) = 4 [pid 5150] exit_group(0 [pid 5152] <... bpf resumed>) = 4 [pid 5151] close(3) = 0 [pid 5150] <... exit_group resumed>) = ? [pid 5151] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5152] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5152] perf_event_open( [pid 5151] <... bpf resumed>) = 3 [pid 5152] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5151] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5149] +++ exited with 0 +++ [pid 5152] exit_group(0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5151] <... bpf resumed>) = 4 [pid 5152] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5153 attached [pid 5151] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5148] +++ exited with 0 +++ [pid 5151] <... bpf resumed>) = 5 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5153] set_robust_list(0x555556880660, 24 [pid 5151] perf_event_open( [pid 5153] <... set_robust_list resumed>) = 0 [pid 5151] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5153 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5151] exit_group(0 [pid 5153] <... prctl resumed>) = 0 [pid 5153] setpgid(0, 0./strace-static-x86_64: Process 5154 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5154 [pid 5154] set_robust_list(0x555556880660, 24) = 0 [pid 5153] <... setpgid resumed>) = 0 [pid 5152] +++ exited with 0 +++ [pid 5151] <... exit_group resumed>) = ? [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5154] <... prctl resumed>) = 0 [pid 5154] setpgid(0, 0) = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5154] <... openat resumed>) = 3 [pid 5153] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5155 attached [pid 5154] write(3, "1000", 4 [pid 5153] write(3, "1000", 4) = 4 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5155 [pid 5155] set_robust_list(0x555556880660, 24 [pid 5154] <... write resumed>) = 4 [pid 5153] close(3 [pid 5151] +++ exited with 0 +++ [pid 5150] +++ exited with 0 +++ [pid 5154] close(3 [pid 5155] <... set_robust_list resumed>) = 0 [pid 5153] <... close resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5154] <... close resumed>) = 0 [pid 5153] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5154] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5155] <... prctl resumed>) = 0 [pid 5154] <... bpf resumed>) = 3 [pid 5153] <... bpf resumed>) = 3 [pid 5155] setpgid(0, 0) = 0 [pid 5154] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5153] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5156 attached ./strace-static-x86_64: Process 5157 attached [pid 5156] set_robust_list(0x555556880660, 24 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5154] <... bpf resumed>) = 4 [pid 5153] <... bpf resumed>) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5156 [pid 5157] set_robust_list(0x555556880660, 24 [pid 5156] <... set_robust_list resumed>) = 0 [pid 5155] <... openat resumed>) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5157] <... set_robust_list resumed>) = 0 [pid 5155] close(3 [pid 5153] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5155] <... close resumed>) = 0 [pid 5157] <... prctl resumed>) = 0 [pid 5156] <... prctl resumed>) = 0 [pid 5155] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5154] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5153] <... bpf resumed>) = 5 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5157 [pid 5157] setpgid(0, 0 [pid 5156] setpgid(0, 0 [pid 5155] <... bpf resumed>) = 3 [pid 5154] <... bpf resumed>) = 5 [pid 5157] <... setpgid resumed>) = 0 [pid 5156] <... setpgid resumed>) = 0 [pid 5153] perf_event_open( [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5153] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5157] <... openat resumed>) = 3 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5155] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5154] perf_event_open( [pid 5153] exit_group(0 [pid 5157] write(3, "1000", 4 [pid 5156] <... openat resumed>) = 3 [pid 5155] <... bpf resumed>) = 4 [pid 5157] <... write resumed>) = 4 [pid 5157] close(3) = 0 [pid 5156] write(3, "1000", 4 [pid 5157] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5156] <... write resumed>) = 4 [pid 5155] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5154] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5153] <... exit_group resumed>) = ? [pid 5157] <... bpf resumed>) = 3 [pid 5156] close(3 [pid 5155] <... bpf resumed>) = 5 [pid 5154] exit_group(0 [pid 5156] <... close resumed>) = 0 [pid 5156] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5155] perf_event_open( [pid 5157] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5155] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5154] <... exit_group resumed>) = ? [pid 5156] <... bpf resumed>) = 3 [pid 5157] <... bpf resumed>) = 4 [pid 5157] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5156] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5155] exit_group(0 [pid 5157] <... bpf resumed>) = 5 [pid 5157] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5156] <... bpf resumed>) = 4 [pid 5155] <... exit_group resumed>) = ? [pid 5153] +++ exited with 0 +++ [pid 5157] exit_group(0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5074] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5157] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5154] +++ exited with 0 +++ [pid 5156] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5156] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5156] exit_group(0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5156] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5158 attached [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5158 [pid 5158] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5159 attached [pid 5159] set_robust_list(0x555556880660, 24) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5159 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5158] <... set_robust_list resumed>) = 0 [pid 5155] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] <... prctl resumed>) = 0 [pid 5158] setpgid(0, 0 [pid 5159] setpgid(0, 0 [pid 5158] <... setpgid resumed>) = 0 [pid 5159] <... setpgid resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5159] <... openat resumed>) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5158] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5160 attached [pid 5159] close(3 [pid 5160] set_robust_list(0x555556880660, 24 [pid 5159] <... close resumed>) = 0 [pid 5160] <... set_robust_list resumed>) = 0 [pid 5159] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5159] <... bpf resumed>) = 3 [pid 5160] <... prctl resumed>) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5158] write(3, "1000", 4 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5160 [pid 5158] <... write resumed>) = 4 [pid 5158] close(3) = 0 [pid 5157] +++ exited with 0 +++ [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5158] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5160] <... openat resumed>) = 3 [pid 5159] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5160] write(3, "1000", 4 [pid 5159] <... bpf resumed>) = 4 [pid 5158] <... bpf resumed>) = 3 [pid 5160] <... write resumed>) = 4 [pid 5160] close(3 [pid 5156] +++ exited with 0 +++ [pid 5160] <... close resumed>) = 0 [pid 5160] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5159] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5158] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5160] <... bpf resumed>) = 3 [pid 5158] <... bpf resumed>) = 4 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5161 attached [pid 5160] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5161 [pid 5161] set_robust_list(0x555556880660, 24 [pid 5160] <... bpf resumed>) = 4 [pid 5159] <... bpf resumed>) = 5 [pid 5158] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5161] <... set_robust_list resumed>) = 0 [pid 5160] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5159] perf_event_open( [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5160] <... bpf resumed>) = 5 [pid 5158] <... bpf resumed>) = 5 [pid 5158] perf_event_open(./strace-static-x86_64: Process 5162 attached [pid 5161] <... prctl resumed>) = 0 [pid 5160] perf_event_open( [pid 5159] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5158] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5161] setpgid(0, 0 [pid 5160] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5162] set_robust_list(0x555556880660, 24 [pid 5161] <... setpgid resumed>) = 0 [pid 5159] exit_group(0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5158] exit_group(0 [pid 5162] <... set_robust_list resumed>) = 0 [pid 5159] <... exit_group resumed>) = ? [pid 5158] <... exit_group resumed>) = ? [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5161] <... openat resumed>) = 3 [pid 5160] exit_group(0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5162 [pid 5162] <... prctl resumed>) = 0 [pid 5161] write(3, "1000", 4 [pid 5162] setpgid(0, 0 [pid 5161] <... write resumed>) = 4 [pid 5162] <... setpgid resumed>) = 0 [pid 5161] close(3 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5161] <... close resumed>) = 0 [pid 5160] <... exit_group resumed>) = ? [pid 5161] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5162] <... openat resumed>) = 3 [pid 5161] <... bpf resumed>) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5159] +++ exited with 0 +++ [pid 5162] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5161] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5161] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5163 attached [pid 5162] <... bpf resumed>) = 3 [pid 5160] +++ exited with 0 +++ [pid 5158] +++ exited with 0 +++ [pid 5163] set_robust_list(0x555556880660, 24 [pid 5162] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5163 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5163] <... set_robust_list resumed>) = 0 [pid 5162] <... bpf resumed>) = 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5164 attached [pid 5163] setpgid(0, 0 [pid 5162] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5164] set_robust_list(0x555556880660, 24 [pid 5163] <... setpgid resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5164 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5164] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5165 attached [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5165 [pid 5165] set_robust_list(0x555556880660, 24 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] <... openat resumed>) = 3 [pid 5165] <... set_robust_list resumed>) = 0 [pid 5164] <... openat resumed>) = 3 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3) = 0 [pid 5165] <... openat resumed>) = 3 [pid 5164] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5165] write(3, "1000", 4 [pid 5163] write(3, "1000", 4 [pid 5165] <... write resumed>) = 4 [pid 5163] <... write resumed>) = 4 [pid 5165] close(3) = 0 [pid 5164] <... bpf resumed>) = 3 [pid 5163] close(3 [pid 5165] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5164] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5163] <... close resumed>) = 0 [pid 5165] <... bpf resumed>) = 3 [pid 5164] <... bpf resumed>) = 4 [pid 5163] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5164] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5161] <... bpf resumed>) = 5 [pid 5164] <... bpf resumed>) = 5 [pid 5163] <... bpf resumed>) = 3 [pid 5162] <... bpf resumed>) = 5 [pid 5164] perf_event_open( [pid 5165] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5164] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5162] perf_event_open( [pid 5161] perf_event_open( [pid 5165] <... bpf resumed>) = 4 [pid 5164] exit_group(0 [pid 5163] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5162] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5161] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5164] <... exit_group resumed>) = ? [pid 5163] <... bpf resumed>) = 4 [pid 5162] exit_group(0 [pid 5161] exit_group(0 [pid 5165] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5165] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5162] <... exit_group resumed>) = ? [pid 5165] exit_group(0 [pid 5161] <... exit_group resumed>) = ? [pid 5165] <... exit_group resumed>) = ? [pid 5164] +++ exited with 0 +++ [pid 5163] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5162] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5163] <... bpf resumed>) = 5 [pid 5163] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5163] exit_group(0./strace-static-x86_64: Process 5166 attached ) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5166 [pid 5166] set_robust_list(0x555556880660, 24 [pid 5161] +++ exited with 0 +++ [pid 5166] <... set_robust_list resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... restart_syscall resumed>) = 0 [pid 5166] <... prctl resumed>) = 0 [pid 5166] setpgid(0, 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5166] <... setpgid resumed>) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5167 attached [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5167] set_robust_list(0x555556880660, 24 [pid 5166] write(3, "1000", 4./strace-static-x86_64: Process 5168 attached [pid 5167] <... set_robust_list resumed>) = 0 [pid 5163] +++ exited with 0 +++ [pid 5168] set_robust_list(0x555556880660, 24) = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5166] <... write resumed>) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5168 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5167] <... prctl resumed>) = 0 [pid 5166] close(3 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5167] setpgid(0, 0 [pid 5166] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5167] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5169 attached [pid 5168] <... prctl resumed>) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5166] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5167 [pid 5169] set_robust_list(0x555556880660, 24 [pid 5168] setpgid(0, 0 [pid 5167] <... openat resumed>) = 3 [pid 5166] <... bpf resumed>) = 3 [pid 5165] +++ exited with 0 +++ [pid 5167] write(3, "1000", 4 [pid 5169] <... set_robust_list resumed>) = 0 [pid 5168] <... setpgid resumed>) = 0 [pid 5167] <... write resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5167] close(3 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5167] <... close resumed>) = 0 [pid 5166] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5169] <... prctl resumed>) = 0 [pid 5168] <... openat resumed>) = 3 [pid 5167] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5166] <... bpf resumed>) = 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5169 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5169] setpgid(0, 0 [pid 5168] write(3, "1000", 4./strace-static-x86_64: Process 5170 attached [pid 5167] <... bpf resumed>) = 3 [pid 5169] <... setpgid resumed>) = 0 [pid 5168] <... write resumed>) = 4 [pid 5166] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5170] set_robust_list(0x555556880660, 24 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5170 [pid 5170] <... set_robust_list resumed>) = 0 [pid 5169] <... openat resumed>) = 3 [pid 5168] close(3 [pid 5167] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5166] <... bpf resumed>) = 5 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5169] write(3, "1000", 4 [pid 5168] <... close resumed>) = 0 [pid 5167] <... bpf resumed>) = 4 [pid 5166] perf_event_open( [pid 5170] <... prctl resumed>) = 0 [pid 5169] <... write resumed>) = 4 [pid 5168] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5167] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5166] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5170] setpgid(0, 0 [pid 5169] close(3 [pid 5168] <... bpf resumed>) = 3 [pid 5167] <... bpf resumed>) = 5 [pid 5166] exit_group(0) = ? [pid 5170] <... setpgid resumed>) = 0 [pid 5169] <... close resumed>) = 0 [pid 5168] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5169] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5168] <... bpf resumed>) = 4 [pid 5167] perf_event_open( [pid 5170] <... openat resumed>) = 3 [pid 5169] <... bpf resumed>) = 3 [pid 5167] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3 [pid 5167] exit_group(0 [pid 5170] <... close resumed>) = 0 [pid 5170] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5169] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5167] <... exit_group resumed>) = ? [pid 5170] <... bpf resumed>) = 3 [pid 5168] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5169] <... bpf resumed>) = 4 [pid 5168] <... bpf resumed>) = 5 [pid 5168] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5168] exit_group(0 [pid 5170] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5169] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5168] <... exit_group resumed>) = ? [pid 5166] +++ exited with 0 +++ [pid 5170] <... bpf resumed>) = 4 [pid 5169] <... bpf resumed>) = 5 [pid 5169] perf_event_open( [pid 5167] +++ exited with 0 +++ [pid 5169] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5169] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5170] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5169] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5171 attached [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5170] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5170] exit_group(0./strace-static-x86_64: Process 5172 attached [pid 5172] set_robust_list(0x555556880660, 24) = 0 [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5168] +++ exited with 0 +++ [pid 5172] <... prctl resumed>) = 0 [pid 5172] setpgid(0, 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5172] <... setpgid resumed>) = 0 [pid 5171] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5171 [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5172 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5171] <... set_robust_list resumed>) = 0 [pid 5170] <... exit_group resumed>) = ? [pid 5070] <... restart_syscall resumed>) = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5172] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5172] write(3, "1000", 4) = 4 [pid 5172] close(3) = 0 [pid 5172] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5171] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5173 attached [pid 5172] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5171] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5173 [pid 5173] set_robust_list(0x555556880660, 24 [pid 5172] <... bpf resumed>) = 4 [pid 5171] <... setpgid resumed>) = 0 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5171] <... openat resumed>) = 3 [pid 5173] <... prctl resumed>) = 0 [pid 5172] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5173] setpgid(0, 0 [pid 5171] write(3, "1000", 4 [pid 5173] <... setpgid resumed>) = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5171] <... write resumed>) = 4 [pid 5171] close(3 [pid 5173] <... openat resumed>) = 3 [pid 5171] <... close resumed>) = 0 [pid 5171] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5173] write(3, "1000", 4 [pid 5171] <... bpf resumed>) = 3 [pid 5173] <... write resumed>) = 4 [pid 5173] close(3) = 0 [pid 5173] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5171] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5173] <... bpf resumed>) = 3 [pid 5171] <... bpf resumed>) = 4 [pid 5173] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5171] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5173] <... bpf resumed>) = 4 [pid 5170] +++ exited with 0 +++ [pid 5169] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5173] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5174 attached [pid 5174] set_robust_list(0x555556880660, 24 [pid 5172] <... bpf resumed>) = 5 [pid 5171] <... bpf resumed>) = 5 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5174 [pid 5174] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5175 attached [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5173] <... bpf resumed>) = 5 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5175 [pid 5175] set_robust_list(0x555556880660, 24 [pid 5173] perf_event_open( [pid 5175] <... set_robust_list resumed>) = 0 [pid 5174] <... prctl resumed>) = 0 [pid 5173] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5172] perf_event_open( [pid 5171] perf_event_open( [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5174] setpgid(0, 0 [pid 5172] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5171] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5175] <... prctl resumed>) = 0 [pid 5174] <... setpgid resumed>) = 0 [pid 5173] exit_group(0 [pid 5172] exit_group(0 [pid 5171] exit_group(0 [pid 5175] setpgid(0, 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5175] <... setpgid resumed>) = 0 [pid 5174] <... openat resumed>) = 3 [pid 5173] <... exit_group resumed>) = ? [pid 5172] <... exit_group resumed>) = ? [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5171] <... exit_group resumed>) = ? [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3 [pid 5175] <... openat resumed>) = 3 [pid 5174] <... close resumed>) = 0 [pid 5175] write(3, "1000", 4) = 4 [pid 5174] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5175] close(3) = 0 [pid 5175] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5174] <... bpf resumed>) = 3 [pid 5173] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5175] <... bpf resumed>) = 3 [pid 5174] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5172] +++ exited with 0 +++ [pid 5171] +++ exited with 0 +++ [pid 5175] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5174] <... bpf resumed>) = 4 [pid 5174] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5174] <... bpf resumed>) = 5 [pid 5174] perf_event_open(./strace-static-x86_64: Process 5177 attached ./strace-static-x86_64: Process 5176 attached [pid 5175] <... bpf resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5177] set_robust_list(0x555556880660, 24 [pid 5176] set_robust_list(0x555556880660, 24 [pid 5175] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5174] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5177 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5176 [pid 5177] <... set_robust_list resumed>) = 0 [pid 5176] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5178 attached [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5175] <... bpf resumed>) = 5 [pid 5178] set_robust_list(0x555556880660, 24 [pid 5177] <... prctl resumed>) = 0 [pid 5176] <... prctl resumed>) = 0 [pid 5178] <... set_robust_list resumed>) = 0 [pid 5177] setpgid(0, 0 [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5177] <... setpgid resumed>) = 0 [pid 5176] setpgid(0, 0 [pid 5175] perf_event_open( [pid 5174] exit_group(0 [pid 5178] <... prctl resumed>) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5176] <... setpgid resumed>) = 0 [pid 5175] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5178] setpgid(0, 0 [pid 5177] <... openat resumed>) = 3 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5175] exit_group(0 [pid 5174] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5178 [pid 5178] <... setpgid resumed>) = 0 [pid 5177] write(3, "1000", 4 [pid 5176] <... openat resumed>) = 3 [pid 5175] <... exit_group resumed>) = ? [pid 5177] <... write resumed>) = 4 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5177] close(3 [pid 5176] write(3, "1000", 4 [pid 5177] <... close resumed>) = 0 [pid 5176] <... write resumed>) = 4 [pid 5177] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5176] close(3 [pid 5177] <... bpf resumed>) = 3 [pid 5176] <... close resumed>) = 0 [pid 5178] <... openat resumed>) = 3 [pid 5178] write(3, "1000", 4) = 4 [pid 5178] close(3 [pid 5176] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5178] <... close resumed>) = 0 [pid 5178] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5176] <... bpf resumed>) = 3 [pid 5177] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5178] <... bpf resumed>) = 3 [pid 5176] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5178] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5177] <... bpf resumed>) = 4 [pid 5176] <... bpf resumed>) = 4 [pid 5178] <... bpf resumed>) = 4 [pid 5177] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5176] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5177] perf_event_open( [pid 5176] <... bpf resumed>) = 5 [pid 5177] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5178] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5176] perf_event_open( [pid 5178] <... bpf resumed>) = 5 [pid 5177] exit_group(0 [pid 5176] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5174] +++ exited with 0 +++ [pid 5178] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5178] exit_group(0 [pid 5176] exit_group(0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5177] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5179 attached [pid 5179] set_robust_list(0x555556880660, 24 [pid 5178] <... exit_group resumed>) = ? [pid 5176] <... exit_group resumed>) = ? [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5179 [pid 5179] <... set_robust_list resumed>) = 0 [pid 5175] +++ exited with 0 +++ [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5179] <... prctl resumed>) = 0 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5177] +++ exited with 0 +++ [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 5180 attached [pid 5180] set_robust_list(0x555556880660, 24) = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] setpgid(0, 0) = 0 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5180 [pid 5180] <... openat resumed>) = 3 [pid 5180] write(3, "1000", 4 [pid 5179] <... openat resumed>) = 3 [pid 5180] <... write resumed>) = 4 [pid 5180] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5180] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5181 attached ) = 3 [pid 5179] write(3, "1000", 4 [pid 5178] +++ exited with 0 +++ [pid 5176] +++ exited with 0 +++ [pid 5180] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5181] set_robust_list(0x555556880660, 24 [pid 5179] <... write resumed>) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5181 [pid 5181] <... set_robust_list resumed>) = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5180] <... bpf resumed>) = 4 [pid 5179] close(3 [pid 5181] <... prctl resumed>) = 0 [pid 5180] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5179] <... close resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5182 attached [pid 5181] setpgid(0, 0 [pid 5179] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5183 attached [pid 5182] set_robust_list(0x555556880660, 24 [pid 5181] <... setpgid resumed>) = 0 [pid 5179] <... bpf resumed>) = 3 [pid 5182] <... set_robust_list resumed>) = 0 [pid 5183] set_robust_list(0x555556880660, 24 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5183 [pid 5183] <... set_robust_list resumed>) = 0 [pid 5182] <... prctl resumed>) = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5182] setpgid(0, 0 [pid 5181] <... openat resumed>) = 3 [pid 5179] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5182 [pid 5183] <... prctl resumed>) = 0 [pid 5182] <... setpgid resumed>) = 0 [pid 5181] write(3, "1000", 4 [pid 5179] <... bpf resumed>) = 4 [pid 5181] <... write resumed>) = 4 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5181] close(3 [pid 5183] setpgid(0, 0 [pid 5181] <... close resumed>) = 0 [pid 5183] <... setpgid resumed>) = 0 [pid 5181] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5182] <... openat resumed>) = 3 [pid 5181] <... bpf resumed>) = 3 [pid 5179] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5183] <... openat resumed>) = 3 [pid 5182] write(3, "1000", 4 [pid 5183] write(3, "1000", 4 [pid 5182] <... write resumed>) = 4 [pid 5183] <... write resumed>) = 4 [pid 5182] close(3 [pid 5181] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5183] close(3) = 0 [pid 5182] <... close resumed>) = 0 [pid 5180] <... bpf resumed>) = 5 [pid 5179] <... bpf resumed>) = 5 [pid 5183] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5182] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5181] <... bpf resumed>) = 4 [pid 5180] perf_event_open( [pid 5179] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5182] <... bpf resumed>) = 3 [pid 5183] <... bpf resumed>) = 3 [pid 5180] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5179] exit_group(0 [pid 5181] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5179] <... exit_group resumed>) = ? [pid 5181] perf_event_open( [pid 5183] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5182] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5181] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5180] exit_group(0 [pid 5183] <... bpf resumed>) = 4 [pid 5182] <... bpf resumed>) = 4 [pid 5181] exit_group(0 [pid 5180] <... exit_group resumed>) = ? [pid 5183] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5181] <... exit_group resumed>) = ? [pid 5182] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5183] <... bpf resumed>) = 5 [pid 5182] <... bpf resumed>) = 5 [pid 5179] +++ exited with 0 +++ [pid 5183] perf_event_open( [pid 5182] perf_event_open( [pid 5181] +++ exited with 0 +++ [pid 5183] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5182] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5183] exit_group(0 [pid 5182] exit_group(0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5182] <... exit_group resumed>) = ? [pid 5183] <... exit_group resumed>) = ? [pid 5180] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5184 attached ./strace-static-x86_64: Process 5185 attached [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5184] set_robust_list(0x555556880660, 24 [pid 5185] set_robust_list(0x555556880660, 24 [pid 5184] <... set_robust_list resumed>) = 0 [pid 5185] <... set_robust_list resumed>) = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5184] <... prctl resumed>) = 0 [pid 5185] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5186 attached [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5185 [pid 5185] setpgid(0, 0 [pid 5184] <... openat resumed>) = 3 [pid 5185] <... setpgid resumed>) = 0 [pid 5184] write(3, "1000", 4 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5184] <... write resumed>) = 4 [pid 5185] <... openat resumed>) = 3 [pid 5184] close(3) = 0 [pid 5184] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5186] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5186 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5184 [pid 5186] <... set_robust_list resumed>) = 0 [pid 5185] <... bpf resumed>) = 3 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5185] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5184] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5186] <... openat resumed>) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5185] <... bpf resumed>) = 4 [pid 5186] close(3) = 0 [pid 5184] <... bpf resumed>) = 4 [pid 5186] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5184] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5185] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5186] <... bpf resumed>) = 3 [pid 5186] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5186] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5183] +++ exited with 0 +++ [pid 5182] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5184] <... bpf resumed>) = 5 [pid 5185] <... bpf resumed>) = 5 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5186] <... bpf resumed>) = 5 ./strace-static-x86_64: Process 5188 attached [pid 5186] perf_event_open( [pid 5188] set_robust_list(0x555556880660, 24) = 0 [pid 5186] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] exit_group(0 [pid 5184] perf_event_open( [pid 5185] perf_event_open( [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5188 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5188] setpgid(0, 0 [pid 5184] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5188] <... setpgid resumed>) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5185] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5188] <... openat resumed>) = 3 [pid 5188] write(3, "1000", 4./strace-static-x86_64: Process 5189 attached [pid 5186] <... exit_group resumed>) = ? [pid 5184] exit_group(0 [pid 5185] exit_group(0 [pid 5189] set_robust_list(0x555556880660, 24 [pid 5188] <... write resumed>) = 4 [pid 5189] <... set_robust_list resumed>) = 0 [pid 5188] close(3 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5188] <... close resumed>) = 0 [pid 5188] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5189] <... prctl resumed>) = 0 [pid 5188] <... bpf resumed>) = 3 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5186] +++ exited with 0 +++ [pid 5184] <... exit_group resumed>) = ? [pid 5185] <... exit_group resumed>) = ? [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5189 [pid 5189] write(3, "1000", 4 [pid 5188] <... bpf resumed>) = 4 [pid 5189] <... write resumed>) = 4 [pid 5189] close(3) = 0 [pid 5189] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5188] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5188] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5188] exit_group(0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5189] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5188] <... exit_group resumed>) = ? [pid 5185] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 5190 attached [pid 5190] set_robust_list(0x555556880660, 24 [pid 5189] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5190 [pid 5190] <... set_robust_list resumed>) = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5190] write(3, "1000", 4 [pid 5189] <... bpf resumed>) = 5 [pid 5184] +++ exited with 0 +++ [pid 5189] perf_event_open( [pid 5190] <... write resumed>) = 4 [pid 5190] close(3 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5190] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5190] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5192 attached ./strace-static-x86_64: Process 5191 attached [pid 5189] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5192] set_robust_list(0x555556880660, 24 [pid 5191] set_robust_list(0x555556880660, 24 [pid 5190] <... bpf resumed>) = 3 [pid 5189] exit_group(0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5191 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5192 [pid 5190] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5192] <... set_robust_list resumed>) = 0 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5189] <... exit_group resumed>) = ? [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5190] <... bpf resumed>) = 4 [pid 5190] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5192] <... prctl resumed>) = 0 [pid 5191] <... prctl resumed>) = 0 [pid 5191] setpgid(0, 0 [pid 5192] setpgid(0, 0 [pid 5191] <... setpgid resumed>) = 0 [pid 5192] <... setpgid resumed>) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5190] <... bpf resumed>) = 5 [pid 5188] +++ exited with 0 +++ [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5191] <... openat resumed>) = 3 [pid 5190] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5190] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5190] exit_group(0./strace-static-x86_64: Process 5193 attached [pid 5193] set_robust_list(0x555556880660, 24) = 0 [pid 5190] <... exit_group resumed>) = ? [pid 5192] <... openat resumed>) = 3 [pid 5191] write(3, "1000", 4 [pid 5192] write(3, "1000", 4 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5192] <... write resumed>) = 4 [pid 5191] <... write resumed>) = 4 [pid 5193] <... prctl resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5193 [pid 5193] setpgid(0, 0) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] close(3 [pid 5191] close(3 [pid 5192] <... close resumed>) = 0 [pid 5191] <... close resumed>) = 0 [pid 5192] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5191] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5193] write(3, "1000", 4 [pid 5192] <... bpf resumed>) = 3 [pid 5193] <... write resumed>) = 4 [pid 5193] close(3) = 0 [pid 5191] <... bpf resumed>) = 3 [pid 5193] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5191] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5193] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5192] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5191] <... bpf resumed>) = 4 [pid 5189] +++ exited with 0 +++ [pid 5193] <... bpf resumed>) = 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5192] <... bpf resumed>) = 4 [pid 5193] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5193] <... bpf resumed>) = 5 [pid 5192] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5191] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5194 attached [pid 5193] perf_event_open( [pid 5194] set_robust_list(0x555556880660, 24 [pid 5193] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5194 [pid 5194] <... set_robust_list resumed>) = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5193] exit_group(0 [pid 5194] <... prctl resumed>) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5193] <... exit_group resumed>) = ? [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5193] +++ exited with 0 +++ [pid 5192] <... bpf resumed>) = 5 [pid 5191] <... bpf resumed>) = 5 [pid 5190] +++ exited with 0 +++ [pid 5192] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5192] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5194] <... openat resumed>) = 3 [pid 5191] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5192] exit_group(0 [pid 5194] write(3, "1000", 4 [pid 5192] <... exit_group resumed>) = ? [pid 5191] exit_group(0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5194] <... write resumed>) = 4 ./strace-static-x86_64: Process 5195 attached [pid 5194] close(3 [pid 5191] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5194] <... close resumed>) = 0 [pid 5194] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5196 attached [pid 5195] set_robust_list(0x555556880660, 24 [pid 5194] <... bpf resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5195 [pid 5194] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5196] set_robust_list(0x555556880660, 24 [pid 5194] <... bpf resumed>) = 4 [pid 5194] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5196] <... set_robust_list resumed>) = 0 [pid 5195] <... set_robust_list resumed>) = 0 [pid 5192] +++ exited with 0 +++ [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5196 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5195] <... prctl resumed>) = 0 [pid 5196] <... prctl resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5195] setpgid(0, 0 [pid 5196] setpgid(0, 0 [pid 5195] <... setpgid resumed>) = 0 [pid 5194] <... bpf resumed>) = 5 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5196] <... setpgid resumed>) = 0 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5195] <... openat resumed>) = 3 [pid 5194] perf_event_open( [pid 5196] <... openat resumed>) = 3 [pid 5195] write(3, "1000", 4 [pid 5194] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5196] write(3, "1000", 4 [pid 5195] <... write resumed>) = 4 [pid 5191] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5196] <... write resumed>) = 4 [pid 5195] close(3 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5196] close(3 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5195] <... close resumed>) = 0 ./strace-static-x86_64: Process 5197 attached [pid 5196] <... close resumed>) = 0 [pid 5194] exit_group(0 [pid 5197] set_robust_list(0x555556880660, 24 [pid 5196] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5195] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5196] <... bpf resumed>) = 3 [pid 5195] <... bpf resumed>) = 3 [pid 5194] <... exit_group resumed>) = ? [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5197 [pid 5196] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5195] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5195] <... bpf resumed>) = 4 [pid 5195] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5198 attached [pid 5197] <... prctl resumed>) = 0 [pid 5196] <... bpf resumed>) = 4 [pid 5194] +++ exited with 0 +++ [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5198 [pid 5198] set_robust_list(0x555556880660, 24 [pid 5197] setpgid(0, 0 [pid 5196] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5197] <... setpgid resumed>) = 0 [pid 5198] <... set_robust_list resumed>) = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5198] <... prctl resumed>) = 0 [pid 5198] setpgid(0, 0 [pid 5197] <... openat resumed>) = 3 [pid 5198] <... setpgid resumed>) = 0 [pid 5197] write(3, "1000", 4 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5197] <... write resumed>) = 4 [pid 5197] close(3) = 0 [pid 5197] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5199 attached [pid 5198] <... openat resumed>) = 3 [pid 5197] <... bpf resumed>) = 3 [pid 5199] set_robust_list(0x555556880660, 24 [pid 5198] write(3, "1000", 4 [pid 5199] <... set_robust_list resumed>) = 0 [pid 5198] <... write resumed>) = 4 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] close(3 [pid 5199] <... prctl resumed>) = 0 [pid 5198] <... close resumed>) = 0 [pid 5199] setpgid(0, 0 [pid 5198] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5197] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5199] <... setpgid resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5199 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5197] <... bpf resumed>) = 4 [pid 5195] <... bpf resumed>) = 5 [pid 5196] <... bpf resumed>) = 5 [pid 5196] perf_event_open( [pid 5199] <... openat resumed>) = 3 [pid 5198] <... bpf resumed>) = 3 [pid 5196] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5199] write(3, "1000", 4 [pid 5198] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5196] exit_group(0 [pid 5195] perf_event_open( [pid 5199] <... write resumed>) = 4 [pid 5198] <... bpf resumed>) = 4 [pid 5197] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5195] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5199] close(3 [pid 5198] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5197] <... bpf resumed>) = 5 [pid 5196] <... exit_group resumed>) = ? [pid 5199] <... close resumed>) = 0 [pid 5198] <... bpf resumed>) = 5 [pid 5197] perf_event_open( [pid 5199] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5198] perf_event_open( [pid 5197] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5199] <... bpf resumed>) = 3 [pid 5198] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5197] exit_group(0 [pid 5198] exit_group(0 [pid 5199] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5198] <... exit_group resumed>) = ? [pid 5197] <... exit_group resumed>) = ? [pid 5196] +++ exited with 0 +++ [pid 5195] exit_group(0) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5199] <... bpf resumed>) = 4 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5195] +++ exited with 0 +++ [pid 5199] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5200 attached [pid 5200] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5200 [pid 5200] <... set_robust_list resumed>) = 0 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] +++ exited with 0 +++ [pid 5200] <... prctl resumed>) = 0 [pid 5197] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5201 attached [pid 5200] setpgid(0, 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5200] <... setpgid resumed>) = 0 [pid 5201] set_robust_list(0x555556880660, 24 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5201] <... set_robust_list resumed>) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... restart_syscall resumed>) = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5200] <... openat resumed>) = 3 [pid 5201] setpgid(0, 0 [pid 5200] write(3, "1000", 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5201 [pid 5201] <... setpgid resumed>) = 0 [pid 5200] <... write resumed>) = 4 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3./strace-static-x86_64: Process 5203 attached ./strace-static-x86_64: Process 5202 attached [pid 5200] close(3 [pid 5203] set_robust_list(0x555556880660, 24 [pid 5202] set_robust_list(0x555556880660, 24 [pid 5201] <... close resumed>) = 0 [pid 5200] <... close resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5202 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5203 [pid 5203] <... set_robust_list resumed>) = 0 [pid 5202] <... set_robust_list resumed>) = 0 [pid 5201] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5200] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5201] <... bpf resumed>) = 3 [pid 5199] <... bpf resumed>) = 5 [pid 5203] <... prctl resumed>) = 0 [pid 5202] <... prctl resumed>) = 0 [pid 5200] <... bpf resumed>) = 3 [pid 5203] setpgid(0, 0 [pid 5202] setpgid(0, 0 [pid 5199] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5203] <... setpgid resumed>) = 0 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5202] <... setpgid resumed>) = 0 [pid 5199] exit_group(0 [pid 5203] <... openat resumed>) = 3 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5201] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5203] write(3, "1000", 4 [pid 5202] <... openat resumed>) = 3 [pid 5201] <... bpf resumed>) = 4 [pid 5200] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5199] <... exit_group resumed>) = ? [pid 5203] <... write resumed>) = 4 [pid 5202] write(3, "1000", 4 [pid 5203] close(3 [pid 5202] <... write resumed>) = 4 [pid 5203] <... close resumed>) = 0 [pid 5202] close(3 [pid 5201] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5200] <... bpf resumed>) = 4 [pid 5199] +++ exited with 0 +++ [pid 5203] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5202] <... close resumed>) = 0 [pid 5200] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5202] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5203] <... bpf resumed>) = 3 [pid 5202] <... bpf resumed>) = 3 [pid 5203] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5202] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5204 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5204 [pid 5204] set_robust_list(0x555556880660, 24) = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5201] <... bpf resumed>) = 5 [pid 5200] <... bpf resumed>) = 5 [pid 5204] <... prctl resumed>) = 0 [pid 5203] <... bpf resumed>) = 4 [pid 5201] perf_event_open( [pid 5200] perf_event_open( [pid 5204] setpgid(0, 0 [pid 5203] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5202] <... bpf resumed>) = 4 [pid 5201] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5200] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5204] <... setpgid resumed>) = 0 [pid 5203] <... bpf resumed>) = 5 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5200] exit_group(0 [pid 5204] <... openat resumed>) = 3 [pid 5204] write(3, "1000", 4 [pid 5200] <... exit_group resumed>) = ? [pid 5204] <... write resumed>) = 4 [pid 5204] close(3 [pid 5203] perf_event_open( [pid 5202] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5201] exit_group(0 [pid 5204] <... close resumed>) = 0 [pid 5203] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5202] <... bpf resumed>) = 5 [pid 5201] <... exit_group resumed>) = ? [pid 5204] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5203] exit_group(0 [pid 5202] perf_event_open( [pid 5203] <... exit_group resumed>) = ? [pid 5202] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5200] +++ exited with 0 +++ [pid 5204] <... bpf resumed>) = 3 [pid 5202] exit_group(0 [pid 5204] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5202] <... exit_group resumed>) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5204] <... bpf resumed>) = 4 [pid 5074] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5205 attached [pid 5204] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5201] +++ exited with 0 +++ [pid 5205] set_robust_list(0x555556880660, 24 [pid 5204] <... bpf resumed>) = 5 [pid 5205] <... set_robust_list resumed>) = 0 [pid 5204] perf_event_open( [pid 5203] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5204] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5205 [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5205] <... prctl resumed>) = 0 [pid 5205] setpgid(0, 0 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5205] <... setpgid resumed>) = 0 [pid 5204] exit_group(0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5206 attached [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5204] <... exit_group resumed>) = ? [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5206 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5207 attached [pid 5206] set_robust_list(0x555556880660, 24 [pid 5205] <... openat resumed>) = 3 [pid 5206] <... set_robust_list resumed>) = 0 [pid 5202] +++ exited with 0 +++ [pid 5207] set_robust_list(0x555556880660, 24 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5205] write(3, "1000", 4 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5207 [pid 5207] <... set_robust_list resumed>) = 0 [pid 5206] <... prctl resumed>) = 0 [pid 5205] <... write resumed>) = 4 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5206] setpgid(0, 0 [pid 5205] close(3 [pid 5207] <... prctl resumed>) = 0 [pid 5206] <... setpgid resumed>) = 0 [pid 5205] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5207] setpgid(0, 0 [pid 5205] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5207] <... setpgid resumed>) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5208 attached [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5206] <... openat resumed>) = 3 [pid 5205] <... bpf resumed>) = 3 [pid 5204] +++ exited with 0 +++ [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5208 [pid 5208] set_robust_list(0x555556880660, 24 [pid 5206] write(3, "1000", 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5205] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5207] <... openat resumed>) = 3 [pid 5208] <... set_robust_list resumed>) = 0 [pid 5207] write(3, "1000", 4 [pid 5206] <... write resumed>) = 4 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5207] <... write resumed>) = 4 [pid 5206] close(3 [pid 5205] <... bpf resumed>) = 4 [pid 5208] <... prctl resumed>) = 0 [pid 5207] close(3 [pid 5206] <... close resumed>) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5207] <... close resumed>) = 0 [pid 5206] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5207] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5205] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5208] <... openat resumed>) = 3 [pid 5206] <... bpf resumed>) = 3 [pid 5208] write(3, "1000", 4 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5208] <... write resumed>) = 4 [pid 5207] <... bpf resumed>) = 3 [pid 5206] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5209 attached [pid 5208] close(3 [pid 5207] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5209] set_robust_list(0x555556880660, 24 [pid 5208] <... close resumed>) = 0 [pid 5206] <... bpf resumed>) = 4 [pid 5205] <... bpf resumed>) = 5 [pid 5209] <... set_robust_list resumed>) = 0 [pid 5208] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5206] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5205] perf_event_open( [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5209 [pid 5205] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5209] <... prctl resumed>) = 0 [pid 5208] <... bpf resumed>) = 3 [pid 5207] <... bpf resumed>) = 4 [pid 5206] <... bpf resumed>) = 5 [pid 5205] exit_group(0 [pid 5209] setpgid(0, 0) = 0 [pid 5208] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5207] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5206] perf_event_open( [pid 5205] <... exit_group resumed>) = ? [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5208] <... bpf resumed>) = 4 [pid 5207] <... bpf resumed>) = 5 [pid 5206] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5209] <... openat resumed>) = 3 [pid 5208] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5209] write(3, "1000", 4 [pid 5208] perf_event_open( [pid 5207] perf_event_open( [pid 5206] exit_group(0 [pid 5205] +++ exited with 0 +++ [pid 5209] <... write resumed>) = 4 [pid 5208] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5207] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5206] <... exit_group resumed>) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5209] close(3 [pid 5208] exit_group(0 [pid 5209] <... close resumed>) = 0 [pid 5209] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5208] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5207] exit_group(0./strace-static-x86_64: Process 5210 attached [pid 5209] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5210] set_robust_list(0x555556880660, 24 [pid 5209] <... bpf resumed>) = 4 [pid 5210] <... set_robust_list resumed>) = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5210 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4 [pid 5209] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5207] <... exit_group resumed>) = ? [pid 5206] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5210] <... write resumed>) = 4 [pid 5210] close(3) = 0 [pid 5210] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5210] <... bpf resumed>) = 3 [pid 5208] +++ exited with 0 +++ ./strace-static-x86_64: Process 5211 attached [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5211] set_robust_list(0x555556880660, 24) = 0 [pid 5210] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5207] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5211 [pid 5211] <... prctl resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5211] setpgid(0, 0./strace-static-x86_64: Process 5212 attached ) = 0 [pid 5210] <... bpf resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5212] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5212 [pid 5212] <... set_robust_list resumed>) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5210] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5211] <... openat resumed>) = 3 [pid 5212] <... prctl resumed>) = 0 [pid 5211] write(3, "1000", 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5212] setpgid(0, 0 [pid 5211] <... write resumed>) = 4 [pid 5212] <... setpgid resumed>) = 0 [pid 5211] close(3 [pid 5209] <... bpf resumed>) = 5 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5211] <... close resumed>) = 0 ./strace-static-x86_64: Process 5213 attached [pid 5212] <... openat resumed>) = 3 [pid 5211] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5210] <... bpf resumed>) = 5 [pid 5209] perf_event_open( [pid 5213] set_robust_list(0x555556880660, 24 [pid 5212] write(3, "1000", 4 [pid 5210] perf_event_open( [pid 5209] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5213] <... set_robust_list resumed>) = 0 [pid 5212] <... write resumed>) = 4 [pid 5210] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5213 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5212] close(3 [pid 5211] <... bpf resumed>) = 3 [pid 5210] exit_group(0 [pid 5209] exit_group(0 [pid 5213] <... prctl resumed>) = 0 [pid 5212] <... close resumed>) = 0 [pid 5211] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5213] setpgid(0, 0 [pid 5212] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5209] <... exit_group resumed>) = ? [pid 5213] <... setpgid resumed>) = 0 [pid 5211] <... bpf resumed>) = 4 [pid 5210] <... exit_group resumed>) = ? [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5212] <... bpf resumed>) = 3 [pid 5211] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5213] <... openat resumed>) = 3 [pid 5212] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5211] <... bpf resumed>) = 5 [pid 5213] write(3, "1000", 4 [pid 5212] <... bpf resumed>) = 4 [pid 5211] perf_event_open( [pid 5213] <... write resumed>) = 4 [pid 5211] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5213] close(3 [pid 5212] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5211] exit_group(0 [pid 5213] <... close resumed>) = 0 [pid 5213] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5212] <... bpf resumed>) = 5 [pid 5211] <... exit_group resumed>) = ? [pid 5213] <... bpf resumed>) = 3 [pid 5212] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5210] +++ exited with 0 +++ [pid 5209] +++ exited with 0 +++ [pid 5213] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5212] exit_group(0 [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5212] <... exit_group resumed>) = ? [pid 5068] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5214 attached [pid 5214] set_robust_list(0x555556880660, 24 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5214] <... set_robust_list resumed>) = 0 [pid 5213] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5215 attached [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5214 [pid 5215] set_robust_list(0x555556880660, 24 [pid 5213] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5214] <... prctl resumed>) = 0 [pid 5213] <... bpf resumed>) = 5 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5215] <... set_robust_list resumed>) = 0 [pid 5214] <... openat resumed>) = 3 [pid 5213] perf_event_open( [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5215 [pid 5214] write(3, "1000", 4 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5213] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5215] <... prctl resumed>) = 0 [pid 5214] <... write resumed>) = 4 [pid 5214] close(3) = 0 [pid 5215] setpgid(0, 0 [pid 5214] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5214] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5215] <... setpgid resumed>) = 0 [pid 5213] exit_group(0 [pid 5211] +++ exited with 0 +++ [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5214] <... bpf resumed>) = 4 [pid 5213] <... exit_group resumed>) = ? [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5215] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5214] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5216 ./strace-static-x86_64: Process 5216 attached [pid 5215] write(3, "1000", 4 [pid 5214] <... bpf resumed>) = 5 [pid 5216] set_robust_list(0x555556880660, 24 [pid 5214] perf_event_open( [pid 5212] +++ exited with 0 +++ [pid 5215] <... write resumed>) = 4 [pid 5216] <... set_robust_list resumed>) = 0 [pid 5215] close(3 [pid 5214] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5215] <... close resumed>) = 0 [pid 5214] exit_group(0 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5216] <... prctl resumed>) = 0 [pid 5215] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5214] <... exit_group resumed>) = ? [pid 5073] <... restart_syscall resumed>) = 0 [pid 5216] setpgid(0, 0 [pid 5215] <... bpf resumed>) = 3 [pid 5216] <... setpgid resumed>) = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5216] <... openat resumed>) = 3 [pid 5215] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5216] write(3, "1000", 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5217 [pid 5216] <... write resumed>) = 4 [pid 5215] <... bpf resumed>) = 4 [pid 5216] close(3) = 0 [pid 5216] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5217 attached [pid 5213] +++ exited with 0 +++ [pid 5217] set_robust_list(0x555556880660, 24 [pid 5216] <... bpf resumed>) = 3 [pid 5217] <... set_robust_list resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5217] setpgid(0, 0) = 0 [pid 5215] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5216] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5215] <... bpf resumed>) = 5 [pid 5216] <... bpf resumed>) = 4 [pid 5215] perf_event_open( [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5218 [pid 5215] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5218 attached [pid 5217] <... openat resumed>) = 3 [pid 5215] exit_group(0 [pid 5218] set_robust_list(0x555556880660, 24 [pid 5217] write(3, "1000", 4 [pid 5218] <... set_robust_list resumed>) = 0 [pid 5217] <... write resumed>) = 4 [pid 5216] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5215] <... exit_group resumed>) = ? [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5217] close(3 [pid 5218] <... prctl resumed>) = 0 [pid 5217] <... close resumed>) = 0 [pid 5217] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5218] setpgid(0, 0 [pid 5217] <... bpf resumed>) = 3 [pid 5218] <... setpgid resumed>) = 0 [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5217] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5218] <... openat resumed>) = 3 [pid 5218] write(3, "1000", 4 [pid 5217] <... bpf resumed>) = 4 [pid 5216] <... bpf resumed>) = 5 [pid 5214] +++ exited with 0 +++ [pid 5218] <... write resumed>) = 4 [pid 5216] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5218] close(3 [pid 5217] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5216] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5218] <... close resumed>) = 0 [pid 5218] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5218] <... bpf resumed>) = 3 [pid 5216] exit_group(0 [pid 5215] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5220 attached ./strace-static-x86_64: Process 5219 attached [pid 5217] <... bpf resumed>) = 5 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5219 [pid 5220] set_robust_list(0x555556880660, 24 [pid 5219] set_robust_list(0x555556880660, 24 [pid 5217] perf_event_open( [pid 5216] <... exit_group resumed>) = ? [pid 5220] <... set_robust_list resumed>) = 0 [pid 5219] <... set_robust_list resumed>) = 0 [pid 5218] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5217] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5218] <... bpf resumed>) = 4 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5220 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5217] exit_group(0 [pid 5220] <... prctl resumed>) = 0 [pid 5219] <... prctl resumed>) = 0 [pid 5220] setpgid(0, 0 [pid 5219] setpgid(0, 0 [pid 5218] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5217] <... exit_group resumed>) = ? [pid 5220] <... setpgid resumed>) = 0 [pid 5219] <... setpgid resumed>) = 0 [pid 5218] <... bpf resumed>) = 5 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5218] perf_event_open( [pid 5216] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5220] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5221 [pid 5218] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5219] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5221 attached [pid 5220] <... bpf resumed>) = 3 [pid 5219] write(3, "1000", 4 [pid 5221] set_robust_list(0x555556880660, 24 [pid 5219] <... write resumed>) = 4 [pid 5220] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5221] <... set_robust_list resumed>) = 0 [pid 5220] <... bpf resumed>) = 4 [pid 5219] close(3 [pid 5218] exit_group(0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5219] <... close resumed>) = 0 [pid 5221] <... prctl resumed>) = 0 [pid 5218] <... exit_group resumed>) = ? [pid 5221] setpgid(0, 0 [pid 5219] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5220] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5221] <... setpgid resumed>) = 0 [pid 5220] perf_event_open( [pid 5219] <... bpf resumed>) = 3 [pid 5220] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5221] write(3, "1000", 4) = 4 [pid 5220] exit_group(0 [pid 5219] <... bpf resumed>) = 4 [pid 5217] +++ exited with 0 +++ [pid 5221] close(3 [pid 5219] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5221] <... close resumed>) = 0 [pid 5220] <... exit_group resumed>) = ? [pid 5219] <... bpf resumed>) = 5 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5221] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5219] perf_event_open( [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5221] <... bpf resumed>) = 3 [pid 5219] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5218] +++ exited with 0 +++ [pid 5219] exit_group(0) = ? [pid 5073] <... restart_syscall resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5221] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5223 attached [pid 5223] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5222 attached ) = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5222] set_robust_list(0x555556880660, 24 [pid 5221] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5222 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5223 [pid 5223] <... prctl resumed>) = 0 [pid 5222] <... set_robust_list resumed>) = 0 [pid 5221] <... bpf resumed>) = 5 [pid 5219] +++ exited with 0 +++ [pid 5223] setpgid(0, 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5221] perf_event_open( [pid 5223] <... setpgid resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5221] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5222] <... prctl resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5223] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5224 attached [pid 5224] set_robust_list(0x555556880660, 24) = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5223] write(3, "1000", 4 [pid 5222] setpgid(0, 0 [pid 5224] <... prctl resumed>) = 0 [pid 5223] <... write resumed>) = 4 [pid 5222] <... setpgid resumed>) = 0 [pid 5221] exit_group(0 [pid 5224] setpgid(0, 0 [pid 5223] close(3 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5224 [pid 5224] <... setpgid resumed>) = 0 [pid 5223] <... close resumed>) = 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5223] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5221] <... exit_group resumed>) = ? [pid 5223] <... bpf resumed>) = 3 [pid 5224] <... openat resumed>) = 3 [pid 5222] <... openat resumed>) = 3 [pid 5224] write(3, "1000", 4 [pid 5222] write(3, "1000", 4 [pid 5224] <... write resumed>) = 4 [pid 5224] close(3 [pid 5222] <... write resumed>) = 4 [pid 5224] <... close resumed>) = 0 [pid 5222] close(3 [pid 5224] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5223] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5222] <... close resumed>) = 0 [pid 5223] <... bpf resumed>) = 4 [pid 5222] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5224] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5223] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5224] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5223] <... bpf resumed>) = 5 [pid 5222] <... bpf resumed>) = 3 [pid 5220] +++ exited with 0 +++ [pid 5223] perf_event_open( [pid 5222] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5223] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5223] exit_group(0 [pid 5222] <... bpf resumed>) = 4 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5222] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5225 attached [pid 5223] <... exit_group resumed>) = ? [pid 5225] set_robust_list(0x555556880660, 24 [pid 5224] <... bpf resumed>) = 5 [pid 5222] <... bpf resumed>) = 5 [pid 5221] +++ exited with 0 +++ [pid 5225] <... set_robust_list resumed>) = 0 [pid 5224] perf_event_open( [pid 5223] +++ exited with 0 +++ [pid 5222] perf_event_open( [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5225 [pid 5222] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5221, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5226 attached [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5224] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5222] exit_group(0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5226 [pid 5226] set_robust_list(0x555556880660, 24 [pid 5225] <... prctl resumed>) = 0 [pid 5224] exit_group(0 [pid 5222] <... exit_group resumed>) = ? [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5226] <... set_robust_list resumed>) = 0 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5225] setpgid(0, 0 [pid 5224] <... exit_group resumed>) = ? [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5225] <... setpgid resumed>) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5226] <... prctl resumed>) = 0 [pid 5226] setpgid(0, 0) = 0 [pid 5225] <... openat resumed>) = 3 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] +++ exited with 0 +++ [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5225] write(3, "1000", 4 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5225] <... write resumed>) = 4 [pid 5225] close(3) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5227 attached [pid 5226] <... openat resumed>) = 3 [pid 5225] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5228 attached [pid 5227] set_robust_list(0x555556880660, 24 [pid 5226] write(3, "1000", 4 [pid 5225] <... bpf resumed>) = 3 [pid 5224] +++ exited with 0 +++ [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5227 [pid 5226] <... write resumed>) = 4 [pid 5226] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5227] <... set_robust_list resumed>) = 0 [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5225] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5228] set_robust_list(0x555556880660, 24 [pid 5227] <... prctl resumed>) = 0 [pid 5226] <... close resumed>) = 0 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5228 [pid 5228] <... set_robust_list resumed>) = 0 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5227] setpgid(0, 0 [pid 5226] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5225] <... bpf resumed>) = 4 [pid 5228] <... prctl resumed>) = 0 [pid 5227] <... setpgid resumed>) = 0 [pid 5226] <... bpf resumed>) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5228] setpgid(0, 0 [pid 5227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5228] <... setpgid resumed>) = 0 [pid 5226] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5229 attached [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5227] <... openat resumed>) = 3 [pid 5226] <... bpf resumed>) = 4 [pid 5225] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5229] set_robust_list(0x555556880660, 24 [pid 5228] <... openat resumed>) = 3 [pid 5227] write(3, "1000", 4 [pid 5225] <... bpf resumed>) = 5 [pid 5229] <... set_robust_list resumed>) = 0 [pid 5226] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5225] perf_event_open( [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5229 [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5228] write(3, "1000", 4 [pid 5227] <... write resumed>) = 4 [pid 5226] <... bpf resumed>) = 5 [pid 5225] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5227] close(3 [pid 5229] <... prctl resumed>) = 0 [pid 5228] <... write resumed>) = 4 [pid 5226] perf_event_open( [pid 5225] exit_group(0 [pid 5229] setpgid(0, 0 [pid 5228] close(3 [pid 5227] <... close resumed>) = 0 [pid 5226] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5229] <... setpgid resumed>) = 0 [pid 5228] <... close resumed>) = 0 [pid 5227] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5228] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5229] <... openat resumed>) = 3 [pid 5228] <... bpf resumed>) = 3 [pid 5227] <... bpf resumed>) = 3 [pid 5226] exit_group(0 [pid 5225] <... exit_group resumed>) = ? [pid 5229] write(3, "1000", 4 [pid 5228] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5227] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5226] <... exit_group resumed>) = ? [pid 5229] <... write resumed>) = 4 [pid 5229] close(3 [pid 5228] <... bpf resumed>) = 4 [pid 5227] <... bpf resumed>) = 4 [pid 5226] +++ exited with 0 +++ [pid 5225] +++ exited with 0 +++ [pid 5229] <... close resumed>) = 0 [pid 5228] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5227] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5229] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5229] <... bpf resumed>) = 3 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5229] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5230 attached ) = 4 [pid 5230] set_robust_list(0x555556880660, 24 [pid 5229] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5230] <... set_robust_list resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5230 ./strace-static-x86_64: Process 5231 attached [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5229] <... bpf resumed>) = 5 [pid 5228] <... bpf resumed>) = 5 [pid 5227] <... bpf resumed>) = 5 [pid 5231] set_robust_list(0x555556880660, 24 [pid 5229] perf_event_open( [pid 5228] perf_event_open( [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5231 [pid 5231] <... set_robust_list resumed>) = 0 [pid 5230] <... prctl resumed>) = 0 [pid 5229] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5228] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5227] perf_event_open( [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5230] setpgid(0, 0 [pid 5227] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5231] <... prctl resumed>) = 0 [pid 5230] <... setpgid resumed>) = 0 [pid 5229] exit_group(0 [pid 5228] exit_group(0 [pid 5227] exit_group(0 [pid 5231] setpgid(0, 0 [pid 5229] <... exit_group resumed>) = ? [pid 5231] <... setpgid resumed>) = 0 [pid 5228] <... exit_group resumed>) = ? [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5229] +++ exited with 0 +++ [pid 5227] <... exit_group resumed>) = ? [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5230] <... openat resumed>) = 3 [pid 5230] write(3, "1000", 4) = 4 [pid 5230] close(3 [pid 5231] <... openat resumed>) = 3 [pid 5230] <... close resumed>) = 0 [pid 5230] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5231] write(3, "1000", 4) = 4 [pid 5230] <... bpf resumed>) = 3 [pid 5231] close(3) = 0 [pid 5231] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5232 attached [pid 5232] set_robust_list(0x555556880660, 24 [pid 5231] <... bpf resumed>) = 3 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5232 [pid 5232] <... set_robust_list resumed>) = 0 [pid 5230] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5230] <... bpf resumed>) = 4 [pid 5232] <... prctl resumed>) = 0 [pid 5231] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5232] setpgid(0, 0 [pid 5231] <... bpf resumed>) = 4 [pid 5230] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5232] <... setpgid resumed>) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5231] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5232] <... openat resumed>) = 3 [pid 5232] write(3, "1000", 4) = 4 [pid 5232] close(3) = 0 [pid 5228] +++ exited with 0 +++ [pid 5227] +++ exited with 0 +++ [pid 5232] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5232] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5233 attached ./strace-static-x86_64: Process 5234 attached [pid 5232] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5234] set_robust_list(0x555556880660, 24) = 0 [pid 5233] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5233 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5233] <... set_robust_list resumed>) = 0 [pid 5232] <... bpf resumed>) = 4 [pid 5231] <... bpf resumed>) = 5 [pid 5230] <... bpf resumed>) = 5 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5234 [pid 5234] <... prctl resumed>) = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5232] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5234] setpgid(0, 0 [pid 5233] <... prctl resumed>) = 0 [pid 5234] <... setpgid resumed>) = 0 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5233] setpgid(0, 0 [pid 5232] <... bpf resumed>) = 5 [pid 5231] perf_event_open( [pid 5230] perf_event_open( [pid 5234] <... openat resumed>) = 3 [pid 5233] <... setpgid resumed>) = 0 [pid 5232] perf_event_open( [pid 5231] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5230] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5234] write(3, "1000", 4 [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5232] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5231] exit_group(0 [pid 5230] exit_group(0 [pid 5234] <... write resumed>) = 4 [pid 5234] close(3 [pid 5233] <... openat resumed>) = 3 [pid 5231] <... exit_group resumed>) = ? [pid 5234] <... close resumed>) = 0 [pid 5233] write(3, "1000", 4 [pid 5232] exit_group(0 [pid 5230] <... exit_group resumed>) = ? [pid 5233] <... write resumed>) = 4 [pid 5234] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5233] close(3 [pid 5232] <... exit_group resumed>) = ? [pid 5233] <... close resumed>) = 0 [pid 5233] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5234] <... bpf resumed>) = 3 [pid 5234] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5233] <... bpf resumed>) = 3 [pid 5234] <... bpf resumed>) = 4 [pid 5233] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5232] +++ exited with 0 +++ [pid 5231] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5233] <... bpf resumed>) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5230] +++ exited with 0 +++ ./strace-static-x86_64: Process 5236 attached ./strace-static-x86_64: Process 5235 attached [pid 5234] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5233] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5235 [pid 5236] set_robust_list(0x555556880660, 24 [pid 5235] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5236 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5236] <... set_robust_list resumed>) = 0 [pid 5235] <... set_robust_list resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5236] <... prctl resumed>) = 0 [pid 5235] <... prctl resumed>) = 0 [pid 5236] setpgid(0, 0 [pid 5235] setpgid(0, 0 [pid 5236] <... setpgid resumed>) = 0 [pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5235] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5237 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5237 [pid 5237] set_robust_list(0x555556880660, 24 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5237] <... set_robust_list resumed>) = 0 [pid 5236] <... openat resumed>) = 3 [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5236] write(3, "1000", 4 [pid 5235] <... openat resumed>) = 3 [pid 5236] <... write resumed>) = 4 [pid 5235] write(3, "1000", 4 [pid 5236] close(3 [pid 5235] <... write resumed>) = 4 [pid 5237] <... prctl resumed>) = 0 [pid 5236] <... close resumed>) = 0 [pid 5235] close(3 [pid 5237] setpgid(0, 0) = 0 [pid 5236] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5235] <... close resumed>) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5236] <... bpf resumed>) = 3 [pid 5235] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5237] <... openat resumed>) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5236] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5235] <... bpf resumed>) = 3 [pid 5237] close(3) = 0 [pid 5236] <... bpf resumed>) = 4 [pid 5234] <... bpf resumed>) = 5 [pid 5237] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5236] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5235] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5234] perf_event_open( [pid 5233] <... bpf resumed>) = 5 [pid 5237] <... bpf resumed>) = 3 [pid 5236] <... bpf resumed>) = 5 [pid 5235] <... bpf resumed>) = 4 [pid 5234] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5233] perf_event_open( [pid 5236] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5236] exit_group(0 [pid 5234] exit_group(0 [pid 5233] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5234] <... exit_group resumed>) = ? [pid 5236] <... exit_group resumed>) = ? [pid 5233] exit_group(0 [pid 5237] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5235] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5237] <... bpf resumed>) = 4 [pid 5235] <... bpf resumed>) = 5 [pid 5234] +++ exited with 0 +++ [pid 5233] <... exit_group resumed>) = ? [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5235] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5235] exit_group(0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5237] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5237] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5237] exit_group(0 [pid 5235] <... exit_group resumed>) = ? [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5238 ./strace-static-x86_64: Process 5238 attached [pid 5235] +++ exited with 0 +++ [pid 5233] +++ exited with 0 +++ [pid 5238] set_robust_list(0x555556880660, 24 [pid 5237] <... exit_group resumed>) = ? [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5238] <... set_robust_list resumed>) = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] +++ exited with 0 +++ [pid 5236] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5238] setpgid(0, 0) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... restart_syscall resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5238] <... openat resumed>) = 3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5236, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5238] write(3, "1000", 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5239 attached [pid 5239] set_robust_list(0x555556880660, 24 [pid 5238] <... write resumed>) = 4 [pid 5239] <... set_robust_list resumed>) = 0 [pid 5238] close(3 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5238] <... close resumed>) = 0 [pid 5238] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5240 attached [pid 5239] <... prctl resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5239 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5240] set_robust_list(0x555556880660, 24 [pid 5239] setpgid(0, 0 [pid 5238] <... bpf resumed>) = 3 [pid 5240] <... set_robust_list resumed>) = 0 [pid 5239] <... setpgid resumed>) = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5240] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5241 attached [pid 5240] setpgid(0, 0) = 0 [pid 5239] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5242 attached [pid 5241] set_robust_list(0x555556880660, 24 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5239] write(3, "1000", 4 [pid 5238] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5241 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5240 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5242 [pid 5242] set_robust_list(0x555556880660, 24 [pid 5241] <... set_robust_list resumed>) = 0 [pid 5240] <... openat resumed>) = 3 [pid 5239] <... write resumed>) = 4 [pid 5242] <... set_robust_list resumed>) = 0 [pid 5238] <... bpf resumed>) = 4 [pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5242] <... prctl resumed>) = 0 [pid 5241] <... prctl resumed>) = 0 [pid 5240] write(3, "1000", 4 [pid 5239] close(3 [pid 5241] setpgid(0, 0 [pid 5240] <... write resumed>) = 4 [pid 5239] <... close resumed>) = 0 [pid 5242] setpgid(0, 0 [pid 5241] <... setpgid resumed>) = 0 [pid 5240] close(3 [pid 5239] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5242] <... setpgid resumed>) = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5240] <... close resumed>) = 0 [pid 5238] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5241] <... openat resumed>) = 3 [pid 5240] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5239] <... bpf resumed>) = 3 [pid 5238] <... bpf resumed>) = 5 [pid 5242] <... openat resumed>) = 3 [pid 5241] write(3, "1000", 4 [pid 5238] perf_event_open( [pid 5242] write(3, "1000", 4 [pid 5241] <... write resumed>) = 4 [pid 5238] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5242] <... write resumed>) = 4 [pid 5241] close(3 [pid 5240] <... bpf resumed>) = 3 [pid 5239] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5242] close(3 [pid 5241] <... close resumed>) = 0 [pid 5240] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5239] <... bpf resumed>) = 4 [pid 5242] <... close resumed>) = 0 [pid 5241] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5240] <... bpf resumed>) = 4 [pid 5242] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5240] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5239] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5240] <... bpf resumed>) = 5 [pid 5239] <... bpf resumed>) = 5 [pid 5240] perf_event_open( [pid 5239] perf_event_open( [pid 5240] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5239] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5238] exit_group(0 [pid 5242] <... bpf resumed>) = 3 [pid 5241] <... bpf resumed>) = 3 [pid 5238] <... exit_group resumed>) = ? [pid 5241] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5242] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5240] exit_group(0 [pid 5239] exit_group(0 [pid 5242] <... bpf resumed>) = 4 [pid 5240] <... exit_group resumed>) = ? [pid 5239] <... exit_group resumed>) = ? [pid 5241] <... bpf resumed>) = 4 [pid 5241] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5242] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5241] <... bpf resumed>) = 5 [pid 5241] perf_event_open( [pid 5242] <... bpf resumed>) = 5 [pid 5241] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5242] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5242] exit_group(0 [pid 5238] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5241] exit_group(0 [pid 5242] <... exit_group resumed>) = ? [pid 5241] <... exit_group resumed>) = ? [pid 5240] +++ exited with 0 +++ [pid 5239] +++ exited with 0 +++ [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 5243 attached [pid 5243] set_robust_list(0x555556880660, 24 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5243] <... set_robust_list resumed>) = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5243] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5244 attached [pid 5243] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5244 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5243 ./strace-static-x86_64: Process 5245 attached [pid 5243] <... setpgid resumed>) = 0 [pid 5245] set_robust_list(0x555556880660, 24 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5245 [pid 5245] <... set_robust_list resumed>) = 0 [pid 5244] set_robust_list(0x555556880660, 24 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5244] <... set_robust_list resumed>) = 0 [pid 5243] <... openat resumed>) = 3 [pid 5245] <... prctl resumed>) = 0 [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5245] setpgid(0, 0) = 0 [pid 5243] write(3, "1000", 4 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5244] <... prctl resumed>) = 0 [pid 5243] <... write resumed>) = 4 [pid 5245] <... openat resumed>) = 3 [pid 5243] close(3) = 0 [pid 5243] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5245] write(3, "1000", 4 [pid 5243] <... bpf resumed>) = 3 [pid 5245] <... write resumed>) = 4 [pid 5245] close(3) = 0 [pid 5245] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5243] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5245] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5243] <... bpf resumed>) = 4 [pid 5244] setpgid(0, 0 [pid 5242] +++ exited with 0 +++ [pid 5244] <... setpgid resumed>) = 0 [pid 5243] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5241] +++ exited with 0 +++ [pid 5245] <... bpf resumed>) = 4 [pid 5245] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5244] <... openat resumed>) = 3 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5244] write(3, "1000", 4./strace-static-x86_64: Process 5246 attached ) = 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5246 ./strace-static-x86_64: Process 5247 attached [pid 5246] set_robust_list(0x555556880660, 24 [pid 5244] close(3) = 0 [pid 5247] set_robust_list(0x555556880660, 24) = 0 [pid 5246] <... set_robust_list resumed>) = 0 [pid 5244] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5244] <... bpf resumed>) = 3 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5247 [pid 5247] <... prctl resumed>) = 0 [pid 5246] <... prctl resumed>) = 0 [pid 5247] setpgid(0, 0 [pid 5246] setpgid(0, 0 [pid 5247] <... setpgid resumed>) = 0 [pid 5246] <... setpgid resumed>) = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5244] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5247] <... openat resumed>) = 3 [pid 5246] <... openat resumed>) = 3 [pid 5245] <... bpf resumed>) = 5 [pid 5243] <... bpf resumed>) = 5 [pid 5247] write(3, "1000", 4 [pid 5246] write(3, "1000", 4 [pid 5247] <... write resumed>) = 4 [pid 5245] perf_event_open( [pid 5247] close(3 [pid 5246] <... write resumed>) = 4 [pid 5247] <... close resumed>) = 0 [pid 5246] close(3 [pid 5245] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5244] <... bpf resumed>) = 4 [pid 5243] perf_event_open( [pid 5247] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5243] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5247] <... bpf resumed>) = 3 [pid 5246] <... close resumed>) = 0 [pid 5246] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5245] exit_group(0 [pid 5244] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5243] exit_group(0 [pid 5247] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5246] <... bpf resumed>) = 3 [pid 5245] <... exit_group resumed>) = ? [pid 5243] <... exit_group resumed>) = ? [pid 5247] <... bpf resumed>) = 4 [pid 5246] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5244] <... bpf resumed>) = 5 [pid 5246] <... bpf resumed>) = 4 [pid 5247] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5246] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5247] <... bpf resumed>) = 5 [pid 5246] <... bpf resumed>) = 5 [pid 5247] perf_event_open( [pid 5246] perf_event_open( [pid 5247] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5246] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5247] exit_group(0 [pid 5246] exit_group(0 [pid 5244] perf_event_open( [pid 5243] +++ exited with 0 +++ [pid 5244] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5247] <... exit_group resumed>) = ? [pid 5246] <... exit_group resumed>) = ? [pid 5245] +++ exited with 0 +++ [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5244] exit_group(0./strace-static-x86_64: Process 5248 attached ) = ? [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5248] set_robust_list(0x555556880660, 24) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5248 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5248] setpgid(0, 0) = 0 [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5249 attached ) = 3 [pid 5249] set_robust_list(0x555556880660, 24 [pid 5248] write(3, "1000", 4 [pid 5244] +++ exited with 0 +++ [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5249 [pid 5249] <... set_robust_list resumed>) = 0 [pid 5248] <... write resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5248] close(3) = 0 [pid 5249] <... prctl resumed>) = 0 [pid 5248] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5250 attached [pid 5249] setpgid(0, 0 [pid 5248] <... bpf resumed>) = 3 [pid 5250] set_robust_list(0x555556880660, 24 [pid 5249] <... setpgid resumed>) = 0 [pid 5250] <... set_robust_list resumed>) = 0 [pid 5248] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5247] +++ exited with 0 +++ [pid 5246] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5250 [pid 5249] <... openat resumed>) = 3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5250] <... prctl resumed>) = 0 [pid 5250] setpgid(0, 0 [pid 5249] write(3, "1000", 4 [pid 5250] <... setpgid resumed>) = 0 [pid 5249] <... write resumed>) = 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5249] close(3) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5248] <... bpf resumed>) = 4 [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5249] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5248] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5250] <... openat resumed>) = 3 [pid 5249] <... bpf resumed>) = 3 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5250] write(3, "1000", 4 [pid 5249] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5250] <... write resumed>) = 4 [pid 5248] <... bpf resumed>) = 5 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5250] close(3./strace-static-x86_64: Process 5251 attached ) = 0 [pid 5249] <... bpf resumed>) = 4 [pid 5248] perf_event_open( [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5250] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5251] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5251 [pid 5251] <... set_robust_list resumed>) = 0 [pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5248] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5252 attached [pid 5251] <... prctl resumed>) = 0 [pid 5250] <... bpf resumed>) = 3 [pid 5248] exit_group(0 [pid 5251] setpgid(0, 0) = 0 [pid 5252] set_robust_list(0x555556880660, 24) = 0 [pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5251] <... openat resumed>) = 3 [pid 5250] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5249] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5248] <... exit_group resumed>) = ? [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5252 [pid 5252] <... prctl resumed>) = 0 [pid 5251] write(3, "1000", 4 [pid 5250] <... bpf resumed>) = 4 [pid 5249] <... bpf resumed>) = 5 [pid 5251] <... write resumed>) = 4 [pid 5251] close(3) = 0 [pid 5251] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5250] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5249] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5250] <... bpf resumed>) = 5 [pid 5249] exit_group(0 [pid 5250] perf_event_open( [pid 5251] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5250] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5249] <... exit_group resumed>) = ? [pid 5252] setpgid(0, 0) = 0 [pid 5251] <... bpf resumed>) = 4 [pid 5250] exit_group(0) = ? [pid 5251] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5248] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5251] perf_event_open( [pid 5252] <... openat resumed>) = 3 [pid 5251] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5252] write(3, "1000", 4 [pid 5251] exit_group(0 [pid 5252] <... write resumed>) = 4 [pid 5252] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5253 ./strace-static-x86_64: Process 5253 attached [pid 5252] <... close resumed>) = 0 [pid 5251] <... exit_group resumed>) = ? [pid 5249] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5254 attached [pid 5252] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5254] set_robust_list(0x555556880660, 24) = 0 [pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] set_robust_list(0x555556880660, 24 [pid 5254] setpgid(0, 0) = 0 [pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5253] <... set_robust_list resumed>) = 0 [pid 5252] <... bpf resumed>) = 3 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5254 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5254] <... openat resumed>) = 3 [pid 5253] setpgid(0, 0 [pid 5252] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5254] write(3, "1000", 4 [pid 5253] <... setpgid resumed>) = 0 [pid 5254] <... write resumed>) = 4 [pid 5254] close(3) = 0 [pid 5254] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5254] <... bpf resumed>) = 3 [pid 5253] <... openat resumed>) = 3 [pid 5250] +++ exited with 0 +++ [pid 5253] write(3, "1000", 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5253] <... write resumed>) = 4 [pid 5253] close(3) = 0 [pid 5253] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5253] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x555556880660, 24) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5255 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5254] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5255] setpgid(0, 0 [pid 5254] <... bpf resumed>) = 4 [pid 5255] <... setpgid resumed>) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4 [pid 5254] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5255] <... write resumed>) = 4 [pid 5254] <... bpf resumed>) = 5 [pid 5255] close(3) = 0 [pid 5255] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5254] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5254] exit_group(0) = ? [pid 5255] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5253] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5252] <... bpf resumed>) = 4 [pid 5253] <... bpf resumed>) = 4 [pid 5252] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5253] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5255] <... bpf resumed>) = 4 [pid 5255] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5254] +++ exited with 0 +++ [pid 5253] <... bpf resumed>) = 5 [pid 5252] <... bpf resumed>) = 5 [pid 5251] +++ exited with 0 +++ [pid 5252] perf_event_open( [pid 5255] perf_event_open( [pid 5253] perf_event_open( [pid 5252] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5251, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5253] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5255] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5252] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5253] exit_group(0./strace-static-x86_64: Process 5256 attached ./strace-static-x86_64: Process 5257 attached [pid 5256] set_robust_list(0x555556880660, 24 [pid 5257] set_robust_list(0x555556880660, 24 [pid 5256] <... set_robust_list resumed>) = 0 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5257] <... set_robust_list resumed>) = 0 [pid 5256] <... prctl resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5256 [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5256] setpgid(0, 0 [pid 5257] <... prctl resumed>) = 0 [pid 5256] <... setpgid resumed>) = 0 [pid 5257] setpgid(0, 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5257 [pid 5257] <... setpgid resumed>) = 0 [pid 5256] <... openat resumed>) = 3 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5256] write(3, "1000", 4 [pid 5257] <... openat resumed>) = 3 [pid 5256] <... write resumed>) = 4 [pid 5257] write(3, "1000", 4 [pid 5256] close(3 [pid 5257] <... write resumed>) = 4 [pid 5256] <... close resumed>) = 0 [pid 5257] close(3 [pid 5256] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5257] <... close resumed>) = 0 [pid 5257] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5255] exit_group(0 [pid 5253] <... exit_group resumed>) = ? [pid 5252] <... exit_group resumed>) = ? [pid 5257] <... bpf resumed>) = 3 [pid 5256] <... bpf resumed>) = 3 [pid 5255] <... exit_group resumed>) = ? [pid 5257] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5256] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5257] <... bpf resumed>) = 4 [pid 5256] <... bpf resumed>) = 4 [pid 5257] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5256] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5257] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5256] perf_event_open( [pid 5257] exit_group(0 [pid 5256] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5253] +++ exited with 0 +++ [pid 5256] exit_group(0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5257] <... exit_group resumed>) = ? [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5256] <... exit_group resumed>) = ? [pid 5067] <... restart_syscall resumed>) = 0 [pid 5255] +++ exited with 0 +++ [pid 5252] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5258 attached [pid 5256] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5259 attached [pid 5259] set_robust_list(0x555556880660, 24) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5258 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5258] set_robust_list(0x555556880660, 24 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5260 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5260 ./strace-static-x86_64: Process 5261 attached [pid 5260] set_robust_list(0x555556880660, 24 [pid 5259] <... prctl resumed>) = 0 [pid 5258] <... set_robust_list resumed>) = 0 [pid 5257] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5259 [pid 5260] <... set_robust_list resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5261 [pid 5261] set_robust_list(0x555556880660, 24 [pid 5260] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5259] setpgid(0, 0 [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5261] <... set_robust_list resumed>) = 0 [pid 5260] <... prctl resumed>) = 0 [pid 5259] <... setpgid resumed>) = 0 [pid 5258] <... prctl resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5260] setpgid(0, 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5258] setpgid(0, 0 [pid 5261] <... prctl resumed>) = 0 [pid 5259] <... openat resumed>) = 3 [pid 5261] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5262 attached [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5260] <... setpgid resumed>) = 0 [pid 5258] <... setpgid resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5262 [pid 5262] set_robust_list(0x555556880660, 24 [pid 5261] <... openat resumed>) = 3 [pid 5260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5259] write(3, "1000", 4 [pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5262] <... set_robust_list resumed>) = 0 [pid 5259] <... write resumed>) = 4 [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5261] write(3, "1000", 4 [pid 5260] <... openat resumed>) = 3 [pid 5259] close(3 [pid 5262] <... prctl resumed>) = 0 [pid 5261] <... write resumed>) = 4 [pid 5260] write(3, "1000", 4 [pid 5259] <... close resumed>) = 0 [pid 5258] <... openat resumed>) = 3 [pid 5262] setpgid(0, 0 [pid 5261] close(3 [pid 5260] <... write resumed>) = 4 [pid 5259] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5258] write(3, "1000", 4 [pid 5262] <... setpgid resumed>) = 0 [pid 5261] <... close resumed>) = 0 [pid 5260] close(3 [pid 5258] <... write resumed>) = 4 [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5261] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5260] <... close resumed>) = 0 [pid 5259] <... bpf resumed>) = 3 [pid 5258] close(3 [pid 5262] <... openat resumed>) = 3 [pid 5260] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5262] write(3, "1000", 4 [pid 5258] <... close resumed>) = 0 [pid 5262] <... write resumed>) = 4 [pid 5261] <... bpf resumed>) = 3 [pid 5260] <... bpf resumed>) = 3 [pid 5259] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5258] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5262] close(3 [pid 5261] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5260] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5259] <... bpf resumed>) = 4 [pid 5259] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5261] <... bpf resumed>) = 4 [pid 5262] <... close resumed>) = 0 [pid 5261] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5260] <... bpf resumed>) = 4 [pid 5259] <... bpf resumed>) = 5 [pid 5258] <... bpf resumed>) = 3 [pid 5262] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5261] <... bpf resumed>) = 5 [pid 5258] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5260] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5262] <... bpf resumed>) = 3 [pid 5261] perf_event_open( [pid 5259] perf_event_open( [pid 5260] <... bpf resumed>) = 5 [pid 5259] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5258] <... bpf resumed>) = 4 [pid 5262] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5261] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5260] perf_event_open( [pid 5259] exit_group(0 [pid 5258] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5260] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5259] <... exit_group resumed>) = ? [pid 5260] exit_group(0 [pid 5262] <... bpf resumed>) = 4 [pid 5261] exit_group(0 [pid 5260] <... exit_group resumed>) = ? [pid 5258] <... bpf resumed>) = 5 [pid 5262] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5258] perf_event_open( [pid 5261] <... exit_group resumed>) = ? [pid 5258] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5262] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5258] exit_group(0 [pid 5262] exit_group(0 [pid 5258] <... exit_group resumed>) = ? [pid 5262] <... exit_group resumed>) = ? [pid 5259] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5263 attached [pid 5263] set_robust_list(0x555556880660, 24) = 0 [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0) = 0 [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5263 [pid 5263] <... openat resumed>) = 3 [pid 5263] write(3, "1000", 4) = 4 [pid 5263] close(3) = 0 [pid 5263] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5260] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5260, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5261] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5263] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 ./strace-static-x86_64: Process 5264 attached [pid 5264] set_robust_list(0x555556880660, 24 [pid 5263] <... bpf resumed>) = 4 [pid 5262] +++ exited with 0 +++ [pid 5258] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5264 [pid 5264] <... set_robust_list resumed>) = 0 [pid 5263] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] restart_syscall(<... resuming interrupted clone ...>) = 0 ./strace-static-x86_64: Process 5265 attached [pid 5264] <... prctl resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5265 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5266 attached [pid 5265] set_robust_list(0x555556880660, 24 [pid 5264] setpgid(0, 0 [pid 5266] set_robust_list(0x555556880660, 24 [pid 5265] <... set_robust_list resumed>) = 0 [pid 5264] <... setpgid resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5266] <... set_robust_list resumed>) = 0 [pid 5265] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5267 attached [pid 5264] <... openat resumed>) = 3 [pid 5266] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5265] setpgid(0, 0 [pid 5264] write(3, "1000", 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5267 [pid 5266] <... prctl resumed>) = 0 [pid 5265] <... setpgid resumed>) = 0 [pid 5264] <... write resumed>) = 4 [pid 5267] set_robust_list(0x555556880660, 24 [pid 5266] setpgid(0, 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5263] <... bpf resumed>) = 5 [pid 5264] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5266 [pid 5266] <... setpgid resumed>) = 0 [pid 5267] <... set_robust_list resumed>) = 0 [pid 5266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5265] <... openat resumed>) = 3 [pid 5264] <... close resumed>) = 0 [pid 5263] perf_event_open( [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5266] <... openat resumed>) = 3 [pid 5265] write(3, "1000", 4 [pid 5264] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5263] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5267] <... prctl resumed>) = 0 [pid 5266] write(3, "1000", 4 [pid 5265] <... write resumed>) = 4 [pid 5264] <... bpf resumed>) = 3 [pid 5263] exit_group(0 [pid 5267] setpgid(0, 0 [pid 5266] <... write resumed>) = 4 [pid 5265] close(3 [pid 5264] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5263] <... exit_group resumed>) = ? [pid 5267] <... setpgid resumed>) = 0 [pid 5266] close(3 [pid 5265] <... close resumed>) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5266] <... close resumed>) = 0 [pid 5265] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5264] <... bpf resumed>) = 4 [pid 5266] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5265] <... bpf resumed>) = 3 [pid 5264] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5267] <... openat resumed>) = 3 [pid 5266] <... bpf resumed>) = 3 [pid 5264] perf_event_open( [pid 5265] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5264] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5265] <... bpf resumed>) = 4 [pid 5264] exit_group(0) = ? [pid 5266] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5267] write(3, "1000", 4 [pid 5266] <... bpf resumed>) = 4 [pid 5265] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5267] <... write resumed>) = 4 [pid 5267] close(3) = 0 [pid 5265] <... bpf resumed>) = 5 [pid 5265] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5267] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5265] exit_group(0 [pid 5266] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5265] <... exit_group resumed>) = ? [pid 5266] <... bpf resumed>) = 5 [pid 5267] <... bpf resumed>) = 3 [pid 5266] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5266] exit_group(0 [pid 5267] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5263] +++ exited with 0 +++ [pid 5266] <... exit_group resumed>) = ? [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5263, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5267] <... bpf resumed>) = 4 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5264] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5264, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5268 attached [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5268] set_robust_list(0x555556880660, 24 [pid 5267] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5268 ./strace-static-x86_64: Process 5269 attached [pid 5268] <... set_robust_list resumed>) = 0 [pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5269] set_robust_list(0x555556880660, 24 [pid 5268] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5269 [pid 5269] <... set_robust_list resumed>) = 0 [pid 5268] <... setpgid resumed>) = 0 [pid 5269] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5267] <... bpf resumed>) = 5 [pid 5265] +++ exited with 0 +++ [pid 5269] <... prctl resumed>) = 0 [pid 5268] <... openat resumed>) = 3 [pid 5267] perf_event_open( [pid 5269] setpgid(0, 0 [pid 5267] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5269] <... setpgid resumed>) = 0 [pid 5268] write(3, "1000", 4 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5267] exit_group(0 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5268] <... write resumed>) = 4 [pid 5269] <... openat resumed>) = 3 [pid 5268] close(3) = 0 [pid 5267] <... exit_group resumed>) = ? [pid 5269] write(3, "1000", 4) = 4 [pid 5268] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5269] close(3) = 0 [pid 5268] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5269] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5268] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5270 attached [pid 5269] <... bpf resumed>) = 3 [pid 5268] <... bpf resumed>) = 4 [pid 5267] +++ exited with 0 +++ [pid 5266] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5266, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5270] set_robust_list(0x555556880660, 24 [pid 5269] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5270 [pid 5270] <... set_robust_list resumed>) = 0 [pid 5268] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5271 attached [pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5271] set_robust_list(0x555556880660, 24) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5271 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5272 attached [pid 5272] set_robust_list(0x555556880660, 24 [pid 5270] <... prctl resumed>) = 0 [pid 5269] <... bpf resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5272 [pid 5272] <... set_robust_list resumed>) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5270] setpgid(0, 0 [pid 5272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5271] <... openat resumed>) = 3 [pid 5270] <... setpgid resumed>) = 0 [pid 5269] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5272] <... prctl resumed>) = 0 [pid 5272] setpgid(0, 0 [pid 5271] write(3, "1000", 4 [pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5272] <... setpgid resumed>) = 0 [pid 5271] <... write resumed>) = 4 [pid 5270] <... openat resumed>) = 3 [pid 5272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5271] close(3 [pid 5272] <... openat resumed>) = 3 [pid 5271] <... close resumed>) = 0 [pid 5270] write(3, "1000", 4) = 4 [pid 5271] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5268] <... bpf resumed>) = 5 [pid 5270] close(3 [pid 5272] write(3, "1000", 4 [pid 5269] <... bpf resumed>) = 5 [pid 5268] perf_event_open( [pid 5270] <... close resumed>) = 0 [pid 5272] <... write resumed>) = 4 [pid 5272] close(3) = 0 [pid 5271] <... bpf resumed>) = 3 [pid 5270] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5269] perf_event_open( [pid 5268] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5272] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5271] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5272] <... bpf resumed>) = 3 [pid 5271] <... bpf resumed>) = 4 [pid 5270] <... bpf resumed>) = 3 [pid 5269] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5268] exit_group(0 [pid 5272] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5271] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5270] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5269] exit_group(0 [pid 5268] <... exit_group resumed>) = ? [pid 5272] <... bpf resumed>) = 4 [pid 5271] <... bpf resumed>) = 5 [pid 5270] <... bpf resumed>) = 4 [pid 5269] <... exit_group resumed>) = ? [pid 5271] perf_event_open( [pid 5272] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5271] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5270] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5268] +++ exited with 0 +++ [pid 5272] <... bpf resumed>) = 5 [pid 5271] exit_group(0 [pid 5270] <... bpf resumed>) = 5 [pid 5272] perf_event_open( [pid 5271] <... exit_group resumed>) = ? [pid 5270] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5272] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5269] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5269, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5272] exit_group(0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5273 attached [pid 5272] <... exit_group resumed>) = ? [pid 5270] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5273] set_robust_list(0x555556880660, 24 [pid 5270] exit_group(0 [pid 5273] <... set_robust_list resumed>) = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5270] <... exit_group resumed>) = ? [pid 5273] setpgid(0, 0 [pid 5271] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5273 ./strace-static-x86_64: Process 5274 attached [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5274 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5274] set_robust_list(0x555556880660, 24 [pid 5273] <... setpgid resumed>) = 0 [pid 5274] <... set_robust_list resumed>) = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5273] <... openat resumed>) = 3 [pid 5272] +++ exited with 0 +++ [pid 5273] write(3, "1000", 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5272, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5275 attached [pid 5274] <... prctl resumed>) = 0 [pid 5273] <... write resumed>) = 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5275] set_robust_list(0x555556880660, 24 [pid 5274] setpgid(0, 0 [pid 5273] close(3 [pid 5270] +++ exited with 0 +++ [pid 5275] <... set_robust_list resumed>) = 0 [pid 5274] <... setpgid resumed>) = 0 [pid 5273] <... close resumed>) = 0 [pid 5273] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5270, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5275 [pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5276 attached [pid 5275] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5273] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5276] set_robust_list(0x555556880660, 24 [pid 5274] <... openat resumed>) = 3 [pid 5275] <... prctl resumed>) = 0 [pid 5274] write(3, "1000", 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5276 [pid 5275] setpgid(0, 0 [pid 5274] <... write resumed>) = 4 [pid 5275] <... setpgid resumed>) = 0 [pid 5274] close(3 [pid 5275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5274] <... close resumed>) = 0 ./strace-static-x86_64: Process 5277 attached [pid 5274] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5277] set_robust_list(0x555556880660, 24 [pid 5276] <... set_robust_list resumed>) = 0 [pid 5273] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5277] <... set_robust_list resumed>) = 0 [pid 5276] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5275] <... openat resumed>) = 3 [pid 5276] <... prctl resumed>) = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5274] <... bpf resumed>) = 3 [pid 5273] <... bpf resumed>) = 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5277 [pid 5276] setpgid(0, 0) = 0 [pid 5277] <... prctl resumed>) = 0 [pid 5276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5275] write(3, "1000", 4 [pid 5274] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5277] setpgid(0, 0 [pid 5275] <... write resumed>) = 4 [pid 5275] close(3 [pid 5277] <... setpgid resumed>) = 0 [pid 5276] <... openat resumed>) = 3 [pid 5273] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5276] write(3, "1000", 4 [pid 5275] <... close resumed>) = 0 [pid 5273] <... bpf resumed>) = 5 [pid 5276] <... write resumed>) = 4 [pid 5275] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5273] perf_event_open( [pid 5277] <... openat resumed>) = 3 [pid 5276] close(3 [pid 5274] <... bpf resumed>) = 4 [pid 5277] write(3, "1000", 4 [pid 5276] <... close resumed>) = 0 [pid 5273] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5277] <... write resumed>) = 4 [pid 5276] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5275] <... bpf resumed>) = 3 [pid 5274] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5273] exit_group(0 [pid 5277] close(3 [pid 5276] <... bpf resumed>) = 3 [pid 5274] <... bpf resumed>) = 5 [pid 5273] <... exit_group resumed>) = ? [pid 5277] <... close resumed>) = 0 [pid 5277] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5275] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5276] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5274] perf_event_open( [pid 5276] <... bpf resumed>) = 4 [pid 5277] <... bpf resumed>) = 3 [pid 5275] <... bpf resumed>) = 4 [pid 5274] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5277] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5276] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5275] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5274] exit_group(0 [pid 5276] <... bpf resumed>) = 5 [pid 5277] <... bpf resumed>) = 4 [pid 5276] perf_event_open( [pid 5275] <... bpf resumed>) = 5 [pid 5274] <... exit_group resumed>) = ? [pid 5273] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5273, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5275] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5276] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5277] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5278 attached [pid 5276] exit_group(0 [pid 5275] exit_group(0 [pid 5274] +++ exited with 0 +++ [pid 5278] set_robust_list(0x555556880660, 24 [pid 5277] <... bpf resumed>) = 5 [pid 5276] <... exit_group resumed>) = ? [pid 5275] <... exit_group resumed>) = ? [pid 5278] <... set_robust_list resumed>) = 0 [pid 5277] perf_event_open( [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5278 [pid 5278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5278] setpgid(0, 0 [pid 5277] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5278] <... setpgid resumed>) = 0 [pid 5278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5277] exit_group(0 [pid 5278] <... openat resumed>) = 3 [pid 5277] <... exit_group resumed>) = ? [pid 5275] +++ exited with 0 +++ [pid 5278] write(3, "1000", 4) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5275, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5278] close(3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5278] <... close resumed>) = 0 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5278] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5279 attached [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5279 [pid 5278] <... bpf resumed>) = 3 [pid 5279] set_robust_list(0x555556880660, 24) = 0 [pid 5278] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5278] <... bpf resumed>) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5278] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5279] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5280 attached [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5280 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5276] +++ exited with 0 +++ [pid 5280] set_robust_list(0x555556880660, 24) = 0 [pid 5279] <... openat resumed>) = 3 [pid 5277] +++ exited with 0 +++ [pid 5280] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5276, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5280] <... prctl resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5280] setpgid(0, 0 [pid 5279] write(3, "1000", 4) = 4 [pid 5279] close(3 [pid 5280] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5281 attached [pid 5280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5279] <... close resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5281 [pid 5281] set_robust_list(0x555556880660, 24 [pid 5280] <... openat resumed>) = 3 [pid 5279] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5281] <... set_robust_list resumed>) = 0 [pid 5280] write(3, "1000", 4 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5282 attached [pid 5281] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5280] <... write resumed>) = 4 [pid 5279] <... bpf resumed>) = 3 [pid 5282] set_robust_list(0x555556880660, 24 [pid 5280] close(3 [pid 5281] <... prctl resumed>) = 0 [pid 5282] <... set_robust_list resumed>) = 0 [pid 5281] setpgid(0, 0 [pid 5280] <... close resumed>) = 0 [pid 5282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5281] <... setpgid resumed>) = 0 [pid 5280] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5282] <... prctl resumed>) = 0 [pid 5281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5279] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5282 [pid 5282] setpgid(0, 0 [pid 5280] <... bpf resumed>) = 3 [pid 5279] <... bpf resumed>) = 4 [pid 5282] <... setpgid resumed>) = 0 [pid 5281] <... openat resumed>) = 3 [pid 5279] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5281] write(3, "1000", 4 [pid 5280] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5278] <... bpf resumed>) = 5 [pid 5282] <... openat resumed>) = 3 [pid 5281] <... write resumed>) = 4 [pid 5280] <... bpf resumed>) = 4 [pid 5279] <... bpf resumed>) = 5 [pid 5278] perf_event_open( [pid 5279] perf_event_open( [pid 5281] close(3 [pid 5278] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5282] write(3, "1000", 4 [pid 5281] <... close resumed>) = 0 [pid 5282] <... write resumed>) = 4 [pid 5282] close(3 [pid 5281] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5279] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5282] <... close resumed>) = 0 [pid 5281] <... bpf resumed>) = 3 [pid 5280] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5279] exit_group(0 [pid 5278] exit_group(0 [pid 5282] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5281] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5280] <... bpf resumed>) = 5 [pid 5279] <... exit_group resumed>) = ? [pid 5278] <... exit_group resumed>) = ? [pid 5282] <... bpf resumed>) = 3 [pid 5281] <... bpf resumed>) = 4 [pid 5280] perf_event_open( [pid 5279] +++ exited with 0 +++ [pid 5280] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5280] exit_group(0) = ? [pid 5282] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5281] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5279, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5282] <... bpf resumed>) = 4 [pid 5282] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5283 attached [pid 5283] set_robust_list(0x555556880660, 24 [pid 5278] +++ exited with 0 +++ [pid 5283] <... set_robust_list resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5278, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5283 [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... restart_syscall resumed>) = 0 [pid 5283] <... prctl resumed>) = 0 [pid 5281] <... bpf resumed>) = 5 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5283] setpgid(0, 0 [pid 5281] perf_event_open(./strace-static-x86_64: Process 5284 attached [pid 5283] <... setpgid resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5284 [pid 5284] set_robust_list(0x555556880660, 24 [pid 5281] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5281] exit_group(0 [pid 5283] <... openat resumed>) = 3 [pid 5281] <... exit_group resumed>) = ? [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3 [pid 5284] <... set_robust_list resumed>) = 0 [pid 5284] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5283] <... close resumed>) = 0 [pid 5284] <... prctl resumed>) = 0 [pid 5284] setpgid(0, 0 [pid 5283] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5284] <... setpgid resumed>) = 0 [pid 5284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] <... bpf resumed>) = 3 [pid 5282] <... bpf resumed>) = 5 [pid 5280] +++ exited with 0 +++ [pid 5284] write(3, "1000", 4) = 4 [pid 5283] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5282] perf_event_open( [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5284] close(3 [pid 5283] <... bpf resumed>) = 4 [pid 5282] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5284] <... close resumed>) = 0 [pid 5284] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5282] exit_group(0 [pid 5283] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5282] <... exit_group resumed>) = ? [pid 5284] <... bpf resumed>) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5285 attached [pid 5284] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5285] set_robust_list(0x555556880660, 24 [pid 5284] <... bpf resumed>) = 4 [pid 5285] <... set_robust_list resumed>) = 0 [pid 5281] +++ exited with 0 +++ [pid 5285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5281, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5285] <... prctl resumed>) = 0 [pid 5285] setpgid(0, 0 [pid 5283] <... bpf resumed>) = 5 [pid 5284] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5285 [pid 5285] <... setpgid resumed>) = 0 [pid 5285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5283] perf_event_open( [pid 5285] <... openat resumed>) = 3 [pid 5283] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5285] write(3, "1000", 4 [pid 5283] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5285] <... write resumed>) = 4 [pid 5283] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5286 attached [pid 5285] close(3 [pid 5286] set_robust_list(0x555556880660, 24 [pid 5285] <... close resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5286 [pid 5286] <... set_robust_list resumed>) = 0 [pid 5285] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5284] <... bpf resumed>) = 5 [pid 5282] +++ exited with 0 +++ [pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5285] <... bpf resumed>) = 3 [pid 5286] <... prctl resumed>) = 0 [pid 5284] perf_event_open( [pid 5286] setpgid(0, 0 [pid 5284] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5286] <... setpgid resumed>) = 0 [pid 5284] exit_group(0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5282, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5284] <... exit_group resumed>) = ? [pid 5285] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5286] <... openat resumed>) = 3 [pid 5285] <... bpf resumed>) = 4 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5286] write(3, "1000", 4) = 4 [pid 5286] close(3) = 0 [pid 5286] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5285] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5287 attached [pid 5286] <... bpf resumed>) = 3 [pid 5285] <... bpf resumed>) = 5 [pid 5287] set_robust_list(0x555556880660, 24 [pid 5285] perf_event_open( [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5287 [pid 5287] <... set_robust_list resumed>) = 0 [pid 5287] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5285] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5287] <... prctl resumed>) = 0 [pid 5286] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5285] exit_group(0 [pid 5283] +++ exited with 0 +++ [pid 5285] <... exit_group resumed>) = ? [pid 5287] setpgid(0, 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5287] <... setpgid resumed>) = 0 [pid 5286] <... bpf resumed>) = 4 [pid 5287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5286] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5287] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5287] write(3, "1000", 4./strace-static-x86_64: Process 5288 attached ) = 4 [pid 5287] close(3 [pid 5288] set_robust_list(0x555556880660, 24) = 0 [pid 5287] <... close resumed>) = 0 [pid 5287] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5288] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5287] <... bpf resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5288 [pid 5287] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5288] <... prctl resumed>) = 0 [pid 5288] setpgid(0, 0 [pid 5287] <... bpf resumed>) = 4 [pid 5286] <... bpf resumed>) = 5 [pid 5284] +++ exited with 0 +++ [pid 5288] <... setpgid resumed>) = 0 [pid 5286] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5284, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5286] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5286] exit_group(0./strace-static-x86_64: Process 5289 attached [pid 5288] <... openat resumed>) = 3 [pid 5287] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5286] <... exit_group resumed>) = ? [pid 5288] write(3, "1000", 4) = 4 [pid 5288] close(3) = 0 [pid 5288] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5289 [pid 5288] <... bpf resumed>) = 3 [pid 5288] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5289] set_robust_list(0x555556880660, 24 [pid 5287] <... bpf resumed>) = 5 [pid 5285] +++ exited with 0 +++ [pid 5289] <... set_robust_list resumed>) = 0 [pid 5288] <... bpf resumed>) = 4 [pid 5287] perf_event_open( [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5285, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5290 attached [pid 5289] <... prctl resumed>) = 0 [pid 5287] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5290] set_robust_list(0x555556880660, 24) = 0 [pid 5289] setpgid(0, 0 [pid 5290] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5289] <... setpgid resumed>) = 0 [pid 5290] <... prctl resumed>) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5288] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5287] exit_group(0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5290 [pid 5290] setpgid(0, 0) = 0 [pid 5289] <... openat resumed>) = 3 [pid 5287] <... exit_group resumed>) = ? [pid 5290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5290] <... openat resumed>) = 3 [pid 5288] <... bpf resumed>) = 5 [pid 5286] +++ exited with 0 +++ [pid 5290] write(3, "1000", 4 [pid 5289] <... bpf resumed>) = 3 [pid 5288] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5290] <... write resumed>) = 4 [pid 5288] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5290] close(3) = 0 [pid 5290] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5289] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5288] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5288] <... exit_group resumed>) = ? [pid 5289] <... bpf resumed>) = 4 [pid 5290] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5289] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5291 ./strace-static-x86_64: Process 5291 attached [pid 5291] set_robust_list(0x555556880660, 24) = 0 [pid 5290] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5289] <... bpf resumed>) = 5 [pid 5287] +++ exited with 0 +++ [pid 5291] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5287, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5291] <... prctl resumed>) = 0 [pid 5290] <... bpf resumed>) = 5 [pid 5291] setpgid(0, 0 [pid 5289] perf_event_open( [pid 5291] <... setpgid resumed>) = 0 [pid 5290] perf_event_open( [pid 5289] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5290] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5290] exit_group(0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5290] <... exit_group resumed>) = ? [pid 5291] <... openat resumed>) = 3 [pid 5289] exit_group(0 [pid 5288] +++ exited with 0 +++ ./strace-static-x86_64: Process 5292 attached [pid 5289] <... exit_group resumed>) = ? [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5292 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5288, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5293 attached [pid 5292] set_robust_list(0x555556880660, 24 [pid 5291] write(3, "1000", 4 [pid 5290] +++ exited with 0 +++ [pid 5289] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5293 [pid 5293] set_robust_list(0x555556880660, 24 [pid 5292] <... set_robust_list resumed>) = 0 [pid 5291] <... write resumed>) = 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5290, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5291] close(3 [pid 5293] <... set_robust_list resumed>) = 0 [pid 5291] <... close resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5292] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5294 attached [pid 5294] set_robust_list(0x555556880660, 24) = 0 [pid 5294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5295 attached [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5292] setpgid(0, 0 [pid 5291] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5294 [pid 5295] set_robust_list(0x555556880660, 24 [pid 5294] setpgid(0, 0 [pid 5293] <... prctl resumed>) = 0 [pid 5292] <... setpgid resumed>) = 0 [pid 5295] <... set_robust_list resumed>) = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5294] <... setpgid resumed>) = 0 [pid 5295] <... prctl resumed>) = 0 [pid 5294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5295] setpgid(0, 0) = 0 [pid 5294] <... openat resumed>) = 3 [pid 5293] setpgid(0, 0 [pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5291] <... bpf resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5295 [pid 5293] <... setpgid resumed>) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5294] write(3, "1000", 4 [pid 5292] <... openat resumed>) = 3 [pid 5294] <... write resumed>) = 4 [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5295] <... openat resumed>) = 3 [pid 5294] close(3) = 0 [pid 5294] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5295] write(3, "1000", 4 [pid 5293] <... openat resumed>) = 3 [pid 5292] write(3, "1000", 4 [pid 5291] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5295] <... write resumed>) = 4 [pid 5294] <... bpf resumed>) = 3 [pid 5293] write(3, "1000", 4 [pid 5292] <... write resumed>) = 4 [pid 5295] close(3 [pid 5292] close(3 [pid 5295] <... close resumed>) = 0 [pid 5294] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5293] <... write resumed>) = 4 [pid 5292] <... close resumed>) = 0 [pid 5291] <... bpf resumed>) = 4 [pid 5295] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5293] close(3 [pid 5292] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5291] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5295] <... bpf resumed>) = 3 [pid 5294] <... bpf resumed>) = 4 [pid 5293] <... close resumed>) = 0 [pid 5291] <... bpf resumed>) = 5 [pid 5293] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5294] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5295] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5294] <... bpf resumed>) = 5 [pid 5293] <... bpf resumed>) = 3 [pid 5292] <... bpf resumed>) = 3 [pid 5291] perf_event_open( [pid 5295] <... bpf resumed>) = 4 [pid 5294] perf_event_open( [pid 5293] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5292] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5291] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5295] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5294] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5295] <... bpf resumed>) = 5 [pid 5294] exit_group(0 [pid 5293] <... bpf resumed>) = 4 [pid 5295] perf_event_open( [pid 5294] <... exit_group resumed>) = ? [pid 5295] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5292] <... bpf resumed>) = 4 [pid 5291] exit_group(0 [pid 5295] exit_group(0 [pid 5291] <... exit_group resumed>) = ? [pid 5295] <... exit_group resumed>) = ? [pid 5293] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5292] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5294] +++ exited with 0 +++ [pid 5293] perf_event_open( [pid 5292] <... bpf resumed>) = 5 [pid 5293] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5292] perf_event_open( [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5293] exit_group(0 [pid 5292] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5293] <... exit_group resumed>) = ? [pid 5292] exit_group(0./strace-static-x86_64: Process 5296 attached [pid 5295] +++ exited with 0 +++ [pid 5293] +++ exited with 0 +++ [pid 5292] <... exit_group resumed>) = ? [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5296 [pid 5296] set_robust_list(0x555556880660, 24 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5293, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5296] <... set_robust_list resumed>) = 0 [pid 5296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5296] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5298 attached ./strace-static-x86_64: Process 5297 attached [pid 5296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5298] set_robust_list(0x555556880660, 24 [pid 5297] set_robust_list(0x555556880660, 24 [pid 5296] <... openat resumed>) = 3 [pid 5298] <... set_robust_list resumed>) = 0 [pid 5297] <... set_robust_list resumed>) = 0 [pid 5296] write(3, "1000", 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5297 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5298 [pid 5296] <... write resumed>) = 4 [pid 5296] close(3) = 0 [pid 5296] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5296] <... bpf resumed>) = 3 [pid 5297] <... prctl resumed>) = 0 [pid 5298] <... prctl resumed>) = 0 [pid 5297] setpgid(0, 0 [pid 5298] setpgid(0, 0 [pid 5297] <... setpgid resumed>) = 0 [pid 5297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5296] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5298] <... setpgid resumed>) = 0 [pid 5297] <... openat resumed>) = 3 [pid 5296] <... bpf resumed>) = 4 [pid 5296] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5297] write(3, "1000", 4 [pid 5292] +++ exited with 0 +++ [pid 5291] +++ exited with 0 +++ [pid 5298] <... openat resumed>) = 3 [pid 5297] <... write resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5291, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5297] close(3 [pid 5298] write(3, "1000", 4 [pid 5297] <... close resumed>) = 0 [pid 5297] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5298] <... write resumed>) = 4 [pid 5297] <... bpf resumed>) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5300 attached ./strace-static-x86_64: Process 5299 attached [pid 5298] close(3 [pid 5297] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5300] set_robust_list(0x555556880660, 24 [pid 5299] set_robust_list(0x555556880660, 24 [pid 5298] <... close resumed>) = 0 [pid 5298] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5300] <... set_robust_list resumed>) = 0 [pid 5299] <... set_robust_list resumed>) = 0 [pid 5298] <... bpf resumed>) = 3 [pid 5297] <... bpf resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5300 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5299 [pid 5300] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5297] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5300] <... prctl resumed>) = 0 [pid 5299] <... prctl resumed>) = 0 [pid 5300] setpgid(0, 0 [pid 5299] setpgid(0, 0 [pid 5298] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5300] <... setpgid resumed>) = 0 [pid 5299] <... setpgid resumed>) = 0 [pid 5300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5296] <... bpf resumed>) = 5 [pid 5300] <... openat resumed>) = 3 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5298] <... bpf resumed>) = 4 [pid 5297] <... bpf resumed>) = 5 [pid 5296] perf_event_open( [pid 5300] write(3, "1000", 4 [pid 5299] <... openat resumed>) = 3 [pid 5297] perf_event_open( [pid 5296] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5300] <... write resumed>) = 4 [pid 5300] close(3 [pid 5299] write(3, "1000", 4 [pid 5297] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5296] exit_group(0 [pid 5300] <... close resumed>) = 0 [pid 5298] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5299] <... write resumed>) = 4 [pid 5298] <... bpf resumed>) = 5 [pid 5296] <... exit_group resumed>) = ? [pid 5300] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5299] close(3 [pid 5298] perf_event_open( [pid 5297] exit_group(0 [pid 5298] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5299] <... close resumed>) = 0 [pid 5298] exit_group(0 [pid 5299] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5297] <... exit_group resumed>) = ? [pid 5298] <... exit_group resumed>) = ? [pid 5300] <... bpf resumed>) = 3 [pid 5299] <... bpf resumed>) = 3 [pid 5296] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5296, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5300] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5299] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5300] <... bpf resumed>) = 4 [pid 5299] <... bpf resumed>) = 4 [pid 5299] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5300] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5301 attached [pid 5299] <... bpf resumed>) = 5 [pid 5297] +++ exited with 0 +++ [pid 5299] perf_event_open( [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5297, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5301 [pid 5301] set_robust_list(0x555556880660, 24 [pid 5299] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5301] <... set_robust_list resumed>) = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5299] exit_group(0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5302 attached [pid 5301] <... prctl resumed>) = 0 [pid 5299] <... exit_group resumed>) = ? [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5302 [pid 5302] set_robust_list(0x555556880660, 24 [pid 5301] setpgid(0, 0 [pid 5302] <... set_robust_list resumed>) = 0 [pid 5301] <... setpgid resumed>) = 0 [pid 5302] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5298] +++ exited with 0 +++ [pid 5302] <... prctl resumed>) = 0 [pid 5302] setpgid(0, 0 [pid 5301] <... openat resumed>) = 3 [pid 5300] <... bpf resumed>) = 5 [pid 5302] <... setpgid resumed>) = 0 [pid 5301] write(3, "1000", 4 [pid 5300] perf_event_open( [pid 5302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5301] <... write resumed>) = 4 [pid 5300] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5301] close(3 [pid 5300] exit_group(0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5302] <... openat resumed>) = 3 [pid 5301] <... close resumed>) = 0 ./strace-static-x86_64: Process 5303 attached [pid 5302] write(3, "1000", 4 [pid 5301] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5303] set_robust_list(0x555556880660, 24 [pid 5302] <... write resumed>) = 4 [pid 5301] <... bpf resumed>) = 3 [pid 5300] <... exit_group resumed>) = ? [pid 5299] +++ exited with 0 +++ [pid 5303] <... set_robust_list resumed>) = 0 [pid 5302] close(3) = 0 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5302] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5303] setpgid(0, 0) = 0 [pid 5302] <... bpf resumed>) = 3 [pid 5301] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5299, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5303 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5302] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5303] write(3, "1000", 4 [pid 5302] <... bpf resumed>) = 4 [pid 5301] <... bpf resumed>) = 4 [pid 5300] +++ exited with 0 +++ [pid 5303] <... write resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5303] close(3 [pid 5301] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5303] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5304 attached [pid 5303] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5305 attached [pid 5304] set_robust_list(0x555556880660, 24 [pid 5303] <... bpf resumed>) = 3 [pid 5302] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5304 [pid 5305] set_robust_list(0x555556880660, 24 [pid 5304] <... set_robust_list resumed>) = 0 [pid 5305] <... set_robust_list resumed>) = 0 [pid 5304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5303] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5304] setpgid(0, 0 [pid 5305] <... prctl resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5305 [pid 5305] setpgid(0, 0) = 0 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5304] <... setpgid resumed>) = 0 [pid 5303] <... bpf resumed>) = 4 [pid 5304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5305] <... openat resumed>) = 3 [pid 5305] write(3, "1000", 4 [pid 5304] write(3, "1000", 4 [pid 5305] <... write resumed>) = 4 [pid 5303] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5304] <... write resumed>) = 4 [pid 5305] close(3 [pid 5302] <... bpf resumed>) = 5 [pid 5301] <... bpf resumed>) = 5 [pid 5305] <... close resumed>) = 0 [pid 5302] perf_event_open( [pid 5304] close(3 [pid 5305] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5303] <... bpf resumed>) = 5 [pid 5302] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5301] perf_event_open( [pid 5304] <... close resumed>) = 0 [pid 5303] perf_event_open( [pid 5301] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5304] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5303] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5305] <... bpf resumed>) = 3 [pid 5302] exit_group(0 [pid 5301] exit_group(0 [pid 5305] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5302] <... exit_group resumed>) = ? [pid 5303] exit_group(0 [pid 5304] <... bpf resumed>) = 3 [pid 5303] <... exit_group resumed>) = ? [pid 5301] <... exit_group resumed>) = ? [pid 5305] <... bpf resumed>) = 4 [pid 5305] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5305] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5305] exit_group(0) = ? [pid 5304] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5302] +++ exited with 0 +++ [pid 5304] <... bpf resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5302, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5306 attached [pid 5306] set_robust_list(0x555556880660, 24) = 0 [pid 5306] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5306 [pid 5306] <... prctl resumed>) = 0 [pid 5306] setpgid(0, 0) = 0 [pid 5305] +++ exited with 0 +++ [pid 5304] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5303] +++ exited with 0 +++ [pid 5301] +++ exited with 0 +++ [pid 5306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5305, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5303, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5306] <... openat resumed>) = 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5306] write(3, "1000", 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5307 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5306] <... write resumed>) = 4 [pid 5306] close(3) = 0 [pid 5306] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5307 attached [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5308 attached [pid 5307] set_robust_list(0x555556880660, 24 [pid 5306] <... bpf resumed>) = 3 [pid 5308] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5308 [pid 5308] <... set_robust_list resumed>) = 0 [pid 5307] <... set_robust_list resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5309 ./strace-static-x86_64: Process 5309 attached [pid 5308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5308] setpgid(0, 0 [pid 5307] <... prctl resumed>) = 0 [pid 5308] <... setpgid resumed>) = 0 [pid 5307] setpgid(0, 0 [pid 5309] set_robust_list(0x555556880660, 24) = 0 [pid 5308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5307] <... setpgid resumed>) = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5306] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5309] setpgid(0, 0 [pid 5308] <... openat resumed>) = 3 [pid 5307] <... openat resumed>) = 3 [pid 5306] <... bpf resumed>) = 4 [pid 5309] <... setpgid resumed>) = 0 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5308] write(3, "1000", 4 [pid 5307] write(3, "1000", 4 [pid 5309] <... openat resumed>) = 3 [pid 5308] <... write resumed>) = 4 [pid 5307] <... write resumed>) = 4 [pid 5308] close(3 [pid 5307] close(3 [pid 5309] write(3, "1000", 4) = 4 [pid 5309] close(3 [pid 5306] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5309] <... close resumed>) = 0 [pid 5309] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5308] <... close resumed>) = 0 [pid 5307] <... close resumed>) = 0 [pid 5304] <... bpf resumed>) = 5 [pid 5304] perf_event_open( [pid 5307] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5306] <... bpf resumed>) = 5 [pid 5304] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5308] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5309] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5306] perf_event_open( [pid 5309] <... bpf resumed>) = 4 [pid 5306] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5304] exit_group(0 [pid 5308] <... bpf resumed>) = 3 [pid 5306] exit_group(0 [pid 5304] <... exit_group resumed>) = ? [pid 5306] <... exit_group resumed>) = ? [pid 5309] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5307] <... bpf resumed>) = 3 [pid 5309] <... bpf resumed>) = 5 [pid 5309] perf_event_open( [pid 5308] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5309] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5309] exit_group(0 [pid 5308] <... bpf resumed>) = 4 [pid 5307] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5309] <... exit_group resumed>) = ? [pid 5307] <... bpf resumed>) = 4 [pid 5308] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5307] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5304] +++ exited with 0 +++ [pid 5308] <... bpf resumed>) = 5 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5304, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5307] <... bpf resumed>) = 5 [pid 5308] perf_event_open( [pid 5307] perf_event_open( [pid 5309] +++ exited with 0 +++ [pid 5308] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5307] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556880650) = 5310 [pid 5307] exit_group(0 [pid 5308] exit_group(0./strace-static-x86_64: Process 5310 attached [pid 5307] <... exit_group resumed>) = ? [pid 5310] set_robust_list(0x555556880660, 24 [pid 5308] <... exit_group resumed>) = ? [pid 5306] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5306, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5310] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5311 attached [pid 5310] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5311] set_robust_list(0x555556880660, 24 [pid 5310] <... prctl resumed>) = 0 [pid 5311] <... set_robust_list resumed>) = 0 [pid 5310] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5311 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5310] <... setpgid resumed>) = 0 [pid 5311] <... prctl resumed>) = 0 [pid 5311] setpgid(0, 0 [pid 5310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5311] <... setpgid resumed>) = 0 [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5311] write(3, "1000", 4./strace-static-x86_64: Process 5312 attached [pid 5310] <... openat resumed>) = 3 [pid 5312] set_robust_list(0x555556880660, 24 [pid 5311] <... write resumed>) = 4 [pid 5310] write(3, "1000", 4 [pid 5312] <... set_robust_list resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5312 [pid 5310] <... write resumed>) = 4 [pid 5312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5310] close(3 [pid 5312] <... prctl resumed>) = 0 [pid 5310] <... close resumed>) = 0 [pid 5312] setpgid(0, 0 [pid 5310] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5312] <... setpgid resumed>) = 0 [pid 5311] close(3 [pid 5312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5311] <... close resumed>) = 0 [pid 5312] <... openat resumed>) = 3 [pid 5311] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5312] write(3, "1000", 4 [pid 5311] <... bpf resumed>) = 3 [pid 5310] <... bpf resumed>) = 3 [pid 5312] <... write resumed>) = 4 [pid 5312] close(3 [pid 5310] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5312] <... close resumed>) = 0 [pid 5312] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5310] <... bpf resumed>) = 4 [pid 5311] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5310] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5312] <... bpf resumed>) = 3 [pid 5311] <... bpf resumed>) = 4 [pid 5311] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5312] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5308] +++ exited with 0 +++ [pid 5307] +++ exited with 0 +++ [pid 5312] <... bpf resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5307, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5308, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5314 attached ./strace-static-x86_64: Process 5313 attached [pid 5314] set_robust_list(0x555556880660, 24 [pid 5313] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5313 [pid 5314] <... set_robust_list resumed>) = 0 [pid 5313] <... set_robust_list resumed>) = 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5312] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5313] <... prctl resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5314 [pid 5314] setpgid(0, 0 [pid 5313] setpgid(0, 0 [pid 5314] <... setpgid resumed>) = 0 [pid 5313] <... setpgid resumed>) = 0 [pid 5314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5314] <... openat resumed>) = 3 [pid 5314] write(3, "1000", 4) = 4 [pid 5313] <... openat resumed>) = 3 [pid 5314] close(3) = 0 [pid 5313] write(3, "1000", 4 [pid 5314] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5313] <... write resumed>) = 4 [pid 5314] <... bpf resumed>) = 3 [pid 5313] close(3 [pid 5312] <... bpf resumed>) = 5 [pid 5311] <... bpf resumed>) = 5 [pid 5310] <... bpf resumed>) = 5 [pid 5314] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5313] <... close resumed>) = 0 [pid 5312] perf_event_open( [pid 5314] <... bpf resumed>) = 4 [pid 5313] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5312] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5311] perf_event_open( [pid 5310] perf_event_open( [pid 5314] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5313] <... bpf resumed>) = 3 [pid 5312] exit_group(0 [pid 5311] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5310] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5314] <... bpf resumed>) = 5 [pid 5314] perf_event_open( [pid 5313] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5312] <... exit_group resumed>) = ? [pid 5311] exit_group(0 [pid 5310] exit_group(0 [pid 5314] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5311] <... exit_group resumed>) = ? [pid 5310] <... exit_group resumed>) = ? [pid 5314] exit_group(0 [pid 5313] <... bpf resumed>) = 4 [pid 5314] <... exit_group resumed>) = ? [pid 5313] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5313] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5313] exit_group(0 [pid 5312] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5312, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5313] <... exit_group resumed>) = ? [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5311] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5311, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5310] +++ exited with 0 +++ [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 ./strace-static-x86_64: Process 5315 attached [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5310, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5315] set_robust_list(0x555556880660, 24 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5315] <... set_robust_list resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5315 ./strace-static-x86_64: Process 5316 attached [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5316] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5317 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5316 [pid 5316] <... set_robust_list resumed>) = 0 [pid 5316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5317] set_robust_list(0x555556880660, 24) = 0 [pid 5316] <... prctl resumed>) = 0 [pid 5315] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5317 [pid 5317] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5316] setpgid(0, 0 [pid 5315] <... setpgid resumed>) = 0 [pid 5317] <... prctl resumed>) = 0 [pid 5316] <... setpgid resumed>) = 0 [pid 5317] setpgid(0, 0 [pid 5316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5317] <... setpgid resumed>) = 0 [pid 5317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5317] <... openat resumed>) = 3 [pid 5316] <... openat resumed>) = 3 [pid 5315] <... openat resumed>) = 3 [pid 5317] write(3, "1000", 4 [pid 5316] write(3, "1000", 4 [pid 5315] write(3, "1000", 4 [pid 5317] <... write resumed>) = 4 [pid 5316] <... write resumed>) = 4 [pid 5315] <... write resumed>) = 4 [pid 5317] close(3 [pid 5316] close(3 [pid 5315] close(3 [pid 5317] <... close resumed>) = 0 [pid 5315] <... close resumed>) = 0 [pid 5317] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5316] <... close resumed>) = 0 [pid 5315] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5317] <... bpf resumed>) = 3 [pid 5316] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5315] <... bpf resumed>) = 3 [pid 5317] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5316] <... bpf resumed>) = 3 [pid 5314] +++ exited with 0 +++ [pid 5313] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5313, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5315] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5317] <... bpf resumed>) = 4 [pid 5316] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5315] <... bpf resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5314, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5315] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5318 attached [pid 5316] <... bpf resumed>) = 4 [pid 5318] set_robust_list(0x555556880660, 24 [pid 5317] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5318 [pid 5318] <... set_robust_list resumed>) = 0 [pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5316] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5318] <... prctl resumed>) = 0 [pid 5318] setpgid(0, 0./strace-static-x86_64: Process 5319 attached ) = 0 [pid 5319] set_robust_list(0x555556880660, 24 [pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5319] <... set_robust_list resumed>) = 0 [pid 5318] <... openat resumed>) = 3 [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5318] write(3, "1000", 4 [pid 5319] <... prctl resumed>) = 0 [pid 5318] <... write resumed>) = 4 [pid 5319] setpgid(0, 0 [pid 5318] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5319 [pid 5319] <... setpgid resumed>) = 0 [pid 5318] <... close resumed>) = 0 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5318] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5319] <... openat resumed>) = 3 [pid 5319] write(3, "1000", 4) = 4 [pid 5318] <... bpf resumed>) = 3 [pid 5319] close(3) = 0 [pid 5318] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5319] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5318] <... bpf resumed>) = 4 [pid 5317] <... bpf resumed>) = 5 [pid 5316] <... bpf resumed>) = 5 [pid 5315] <... bpf resumed>) = 5 [pid 5317] perf_event_open( [pid 5316] perf_event_open( [pid 5319] <... bpf resumed>) = 3 [pid 5318] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5317] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5316] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5315] perf_event_open( [pid 5319] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5318] <... bpf resumed>) = 5 [pid 5317] exit_group(0 [pid 5316] exit_group(0 [pid 5315] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5318] perf_event_open( [pid 5317] <... exit_group resumed>) = ? [pid 5316] <... exit_group resumed>) = ? [pid 5319] <... bpf resumed>) = 4 [pid 5318] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5317] +++ exited with 0 +++ [pid 5315] exit_group(0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5317, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5320 attached [pid 5320] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5320 [pid 5320] <... set_robust_list resumed>) = 0 [pid 5320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5320] setpgid(0, 0) = 0 [pid 5320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5318] exit_group(0 [pid 5315] <... exit_group resumed>) = ? [pid 5320] <... openat resumed>) = 3 [pid 5320] write(3, "1000", 4) = 4 [pid 5320] close(3) = 0 [pid 5320] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5320] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5319] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5318] <... exit_group resumed>) = ? [pid 5319] <... bpf resumed>) = 5 [pid 5319] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5319] exit_group(0 [pid 5320] <... bpf resumed>) = 4 [pid 5319] <... exit_group resumed>) = ? [pid 5320] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5315] +++ exited with 0 +++ [pid 5320] <... bpf resumed>) = 5 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5315, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5320] perf_event_open(./strace-static-x86_64: Process 5321 attached [pid 5321] set_robust_list(0x555556880660, 24) = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5321] setpgid(0, 0) = 0 [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5320] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5321 [pid 5321] <... openat resumed>) = 3 [pid 5320] exit_group(0 [pid 5316] +++ exited with 0 +++ [pid 5321] write(3, "1000", 4) = 4 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5316, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5321] close(3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5321] <... close resumed>) = 0 [pid 5321] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5322 attached ) = 3 [pid 5320] <... exit_group resumed>) = ? [pid 5322] set_robust_list(0x555556880660, 24 [pid 5321] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5319] +++ exited with 0 +++ [pid 5322] <... set_robust_list resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5322 [pid 5321] <... bpf resumed>) = 4 [pid 5322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5319, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5322] setpgid(0, 0) = 0 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5321] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5323 attached [pid 5322] write(3, "1000", 4 [pid 5321] <... bpf resumed>) = 5 [pid 5318] +++ exited with 0 +++ [pid 5322] <... write resumed>) = 4 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5323 [pid 5322] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5323] set_robust_list(0x555556880660, 24 [pid 5321] perf_event_open( [pid 5322] <... close resumed>) = 0 [pid 5323] <... set_robust_list resumed>) = 0 [pid 5321] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5322] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5323] setpgid(0, 0 [pid 5321] exit_group(0 [pid 5323] <... setpgid resumed>) = 0 [pid 5321] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5324 attached [pid 5323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5322] <... bpf resumed>) = 3 [pid 5320] +++ exited with 0 +++ [pid 5324] set_robust_list(0x555556880660, 24 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5320, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5324] <... set_robust_list resumed>) = 0 [pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5324 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5324] setpgid(0, 0) = 0 [pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5322] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5325 attached [pid 5323] <... openat resumed>) = 3 [pid 5324] <... openat resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5325 [pid 5323] write(3, "1000", 4 [pid 5325] set_robust_list(0x555556880660, 24 [pid 5324] write(3, "1000", 4 [pid 5323] <... write resumed>) = 4 [pid 5325] <... set_robust_list resumed>) = 0 [pid 5324] <... write resumed>) = 4 [pid 5323] close(3 [pid 5322] <... bpf resumed>) = 4 [pid 5324] close(3 [pid 5323] <... close resumed>) = 0 [pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5324] <... close resumed>) = 0 [pid 5322] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5325] <... prctl resumed>) = 0 [pid 5324] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5323] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5325] setpgid(0, 0 [pid 5324] <... bpf resumed>) = 3 [pid 5323] <... bpf resumed>) = 3 [pid 5322] <... bpf resumed>) = 5 [pid 5325] <... setpgid resumed>) = 0 [pid 5324] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5323] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5322] perf_event_open( [pid 5325] <... openat resumed>) = 3 [pid 5325] write(3, "1000", 4) = 4 [pid 5325] close(3) = 0 [pid 5324] <... bpf resumed>) = 4 [pid 5323] <... bpf resumed>) = 4 [pid 5322] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5324] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5323] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5325] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5325] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5322] exit_group(0) = ? [pid 5325] <... bpf resumed>) = 4 [pid 5325] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5324] <... bpf resumed>) = 5 [pid 5323] <... bpf resumed>) = 5 [pid 5322] +++ exited with 0 +++ [pid 5321] +++ exited with 0 +++ [pid 5323] perf_event_open( [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5322, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5325] <... bpf resumed>) = 5 [pid 5324] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5323] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5325] perf_event_open( [pid 5324] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5325] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5323] exit_group(0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5324] exit_group(0./strace-static-x86_64: Process 5326 attached [pid 5326] set_robust_list(0x555556880660, 24 [pid 5324] <... exit_group resumed>) = ? [pid 5326] <... set_robust_list resumed>) = 0 [pid 5326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5325] exit_group(0 [pid 5323] <... exit_group resumed>) = ? [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5326 ./strace-static-x86_64: Process 5327 attached [pid 5326] <... prctl resumed>) = 0 [pid 5327] set_robust_list(0x555556880660, 24 [pid 5325] <... exit_group resumed>) = ? [pid 5327] <... set_robust_list resumed>) = 0 [pid 5324] +++ exited with 0 +++ [pid 5326] setpgid(0, 0 [pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5326] <... setpgid resumed>) = 0 [pid 5327] <... prctl resumed>) = 0 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5327 [pid 5327] setpgid(0, 0 [pid 5326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5327] <... setpgid resumed>) = 0 [pid 5326] <... openat resumed>) = 3 [pid 5326] write(3, "1000", 4 [pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5326] <... write resumed>) = 4 [pid 5326] close(3) = 0 [pid 5326] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5327] write(3, "1000", 4 [pid 5326] <... bpf resumed>) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5327] <... write resumed>) = 4 [pid 5327] close(3) = 0 [pid 5327] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5323] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5323, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5327] <... bpf resumed>) = 3 [pid 5067] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5328 attached [pid 5328] set_robust_list(0x555556880660, 24 [pid 5326] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5328] <... set_robust_list resumed>) = 0 [pid 5325] +++ exited with 0 +++ [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5328 [pid 5327] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5326] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5325, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5328] <... prctl resumed>) = 0 [pid 5327] <... bpf resumed>) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5328] setpgid(0, 0./strace-static-x86_64: Process 5329 attached ) = 0 [pid 5327] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5329 ./strace-static-x86_64: Process 5330 attached [pid 5329] set_robust_list(0x555556880660, 24 [pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5326] <... bpf resumed>) = 5 [pid 5330] set_robust_list(0x555556880660, 24 [pid 5329] <... set_robust_list resumed>) = 0 [pid 5328] <... openat resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5330 [pid 5330] <... set_robust_list resumed>) = 0 [pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5328] write(3, "1000", 4 [pid 5327] <... bpf resumed>) = 5 [pid 5326] perf_event_open( [pid 5330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5327] perf_event_open( [pid 5330] setpgid(0, 0 [pid 5329] <... prctl resumed>) = 0 [pid 5328] <... write resumed>) = 4 [pid 5326] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5330] <... setpgid resumed>) = 0 [pid 5329] setpgid(0, 0 [pid 5328] close(3 [pid 5327] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5326] exit_group(0 [pid 5329] <... setpgid resumed>) = 0 [pid 5328] <... close resumed>) = 0 [pid 5330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5328] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5330] <... openat resumed>) = 3 [pid 5329] <... openat resumed>) = 3 [pid 5328] <... bpf resumed>) = 3 [pid 5326] <... exit_group resumed>) = ? [pid 5330] write(3, "1000", 4 [pid 5329] write(3, "1000", 4 [pid 5327] exit_group(0 [pid 5330] <... write resumed>) = 4 [pid 5330] close(3 [pid 5327] <... exit_group resumed>) = ? [pid 5330] <... close resumed>) = 0 [pid 5330] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5329] <... write resumed>) = 4 [pid 5328] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5329] close(3 [pid 5328] <... bpf resumed>) = 4 [pid 5329] <... close resumed>) = 0 [pid 5328] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5329] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5328] <... bpf resumed>) = 5 [pid 5328] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5328] exit_group(0) = ? [pid 5330] <... bpf resumed>) = 3 [pid 5329] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5329] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5329] perf_event_open( [pid 5330] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5326] +++ exited with 0 +++ [pid 5329] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5328] +++ exited with 0 +++ [pid 5329] exit_group(0) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5328, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5326, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5330] <... bpf resumed>) = 4 [pid 5074] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556880650) = 5331 ./strace-static-x86_64: Process 5332 attached [pid 5330] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5332] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5331 attached ) = 0 [pid 5331] set_robust_list(0x555556880660, 24 [pid 5332] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5331] <... set_robust_list resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5332 [pid 5332] <... prctl resumed>) = 0 [pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5330] <... bpf resumed>) = 5 [pid 5327] +++ exited with 0 +++ [pid 5332] setpgid(0, 0 [pid 5330] perf_event_open( [pid 5332] <... setpgid resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5327, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5331] <... prctl resumed>) = 0 [pid 5331] setpgid(0, 0 [pid 5332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5331] <... setpgid resumed>) = 0 [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5330] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5331] <... openat resumed>) = 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5331] write(3, "1000", 4) = 4 [pid 5331] close(3) = 0 [pid 5331] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5331] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5333 attached [pid 5332] <... openat resumed>) = 3 [pid 5330] exit_group(0 [pid 5329] +++ exited with 0 +++ [pid 5333] set_robust_list(0x555556880660, 24 [pid 5332] write(3, "1000", 4 [pid 5331] <... bpf resumed>) = 4 [pid 5330] <... exit_group resumed>) = ? [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5333 [pid 5332] <... write resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5329, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5333] <... set_robust_list resumed>) = 0 [pid 5332] close(3 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5333] <... prctl resumed>) = 0 [pid 5332] <... close resumed>) = 0 [pid 5333] setpgid(0, 0 [pid 5332] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5333] <... setpgid resumed>) = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5332] <... bpf resumed>) = 3 [pid 5333] <... openat resumed>) = 3 [pid 5333] write(3, "1000", 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5333] <... write resumed>) = 4 [pid 5333] close(3) = 0 [pid 5333] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5332] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5333] <... bpf resumed>) = 3 [pid 5332] <... bpf resumed>) = 4 [pid 5331] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5334 attached [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5334 [pid 5332] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5334] set_robust_list(0x555556880660, 24 [pid 5333] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5331] <... bpf resumed>) = 5 [pid 5334] <... set_robust_list resumed>) = 0 [pid 5332] <... bpf resumed>) = 5 [pid 5334] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5331] perf_event_open( [pid 5334] <... prctl resumed>) = 0 [pid 5332] perf_event_open( [pid 5334] setpgid(0, 0 [pid 5332] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5331] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5334] <... setpgid resumed>) = 0 [pid 5332] exit_group(0 [pid 5331] exit_group(0 [pid 5334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5333] <... bpf resumed>) = 4 [pid 5331] <... exit_group resumed>) = ? [pid 5333] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5332] <... exit_group resumed>) = ? [pid 5330] +++ exited with 0 +++ [pid 5333] <... bpf resumed>) = 5 [pid 5334] <... openat resumed>) = 3 [pid 5333] perf_event_open( [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5330, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5333] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5335 attached [pid 5334] write(3, "1000", 4 [pid 5333] exit_group(0 [pid 5331] +++ exited with 0 +++ [pid 5334] <... write resumed>) = 4 [pid 5334] close(3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5335 [pid 5334] <... close resumed>) = 0 [pid 5333] <... exit_group resumed>) = ? [pid 5335] set_robust_list(0x555556880660, 24 [pid 5334] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5335] <... set_robust_list resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5331, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5335] <... prctl resumed>) = 0 [pid 5335] setpgid(0, 0 [pid 5334] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5336 attached [pid 5336] set_robust_list(0x555556880660, 24 [pid 5335] <... setpgid resumed>) = 0 [pid 5336] <... set_robust_list resumed>) = 0 [pid 5336] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5336 [pid 5336] <... prctl resumed>) = 0 [pid 5335] <... openat resumed>) = 3 [pid 5334] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5336] setpgid(0, 0 [pid 5335] write(3, "1000", 4) = 4 [pid 5335] close(3 [pid 5336] <... setpgid resumed>) = 0 [pid 5335] <... close resumed>) = 0 [pid 5336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5335] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5335] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5336] <... openat resumed>) = 3 [pid 5334] <... bpf resumed>) = 4 [pid 5336] write(3, "1000", 4 [pid 5335] <... bpf resumed>) = 4 [pid 5334] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5336] <... write resumed>) = 4 [pid 5336] close(3) = 0 [pid 5335] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5336] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5332] +++ exited with 0 +++ [pid 5336] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5333] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5332, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5333, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5336] <... bpf resumed>) = 4 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5336] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5338 attached ./strace-static-x86_64: Process 5337 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5337 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5338 [pid 5338] set_robust_list(0x555556880660, 24 [pid 5337] set_robust_list(0x555556880660, 24 [pid 5338] <... set_robust_list resumed>) = 0 [pid 5337] <... set_robust_list resumed>) = 0 [pid 5338] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5336] <... bpf resumed>) = 5 [pid 5335] <... bpf resumed>) = 5 [pid 5334] <... bpf resumed>) = 5 [pid 5336] perf_event_open( [pid 5335] perf_event_open( [pid 5334] perf_event_open( [pid 5338] <... prctl resumed>) = 0 [pid 5337] <... prctl resumed>) = 0 [pid 5334] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5338] setpgid(0, 0 [pid 5337] setpgid(0, 0 [pid 5336] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5335] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5338] <... setpgid resumed>) = 0 [pid 5337] <... setpgid resumed>) = 0 [pid 5338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5338] <... openat resumed>) = 3 [pid 5337] <... openat resumed>) = 3 [pid 5334] exit_group(0 [pid 5338] write(3, "1000", 4 [pid 5337] write(3, "1000", 4 [pid 5338] <... write resumed>) = 4 [pid 5336] exit_group(0 [pid 5338] close(3 [pid 5337] <... write resumed>) = 4 [pid 5334] <... exit_group resumed>) = ? [pid 5337] close(3 [pid 5338] <... close resumed>) = 0 [pid 5337] <... close resumed>) = 0 [pid 5338] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5337] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5338] <... bpf resumed>) = 3 [pid 5337] <... bpf resumed>) = 3 [pid 5336] <... exit_group resumed>) = ? [pid 5335] exit_group(0 [pid 5338] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5337] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5335] <... exit_group resumed>) = ? [pid 5338] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5337] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5338] <... bpf resumed>) = 5 [pid 5338] perf_event_open( [pid 5337] <... bpf resumed>) = 5 [pid 5338] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5337] perf_event_open( [pid 5336] +++ exited with 0 +++ [pid 5334] +++ exited with 0 +++ [pid 5338] exit_group(0 [pid 5337] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5336, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5334, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5338] <... exit_group resumed>) = ? [pid 5337] exit_group(0 [pid 5067] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5339 attached [pid 5337] <... exit_group resumed>) = ? [pid 5335] +++ exited with 0 +++ [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5339 [pid 5339] set_robust_list(0x555556880660, 24 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5335, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5339] <... set_robust_list resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5340 attached [pid 5340] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5340 ./strace-static-x86_64: Process 5341 attached [pid 5340] <... set_robust_list resumed>) = 0 [pid 5341] set_robust_list(0x555556880660, 24 [pid 5340] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5341 [pid 5341] <... set_robust_list resumed>) = 0 [pid 5340] <... prctl resumed>) = 0 [pid 5339] <... prctl resumed>) = 0 [pid 5337] +++ exited with 0 +++ [pid 5340] setpgid(0, 0 [pid 5339] setpgid(0, 0 [pid 5340] <... setpgid resumed>) = 0 [pid 5339] <... setpgid resumed>) = 0 [pid 5340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5340] <... openat resumed>) = 3 [pid 5339] <... openat resumed>) = 3 [pid 5338] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5338, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 5342 attached [pid 5341] <... prctl resumed>) = 0 [pid 5340] write(3, "1000", 4 [pid 5339] write(3, "1000", 4 [pid 5341] setpgid(0, 0 [pid 5340] <... write resumed>) = 4 [pid 5339] <... write resumed>) = 4 [pid 5341] <... setpgid resumed>) = 0 [pid 5342] set_robust_list(0x555556880660, 24 [pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5342] <... set_robust_list resumed>) = 0 [pid 5340] close(3 [pid 5339] close(3 [pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5340] <... close resumed>) = 0 [pid 5339] <... close resumed>) = 0 [pid 5342] <... prctl resumed>) = 0 [pid 5340] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5339] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5342] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5343 attached [pid 5342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5341] <... openat resumed>) = 3 [pid 5340] <... bpf resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5342 [pid 5341] write(3, "1000", 4) = 4 [pid 5341] close(3) = 0 [pid 5343] set_robust_list(0x555556880660, 24 [pid 5341] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5340] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5339] <... bpf resumed>) = 3 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5343 [pid 5343] <... set_robust_list resumed>) = 0 [pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5342] <... openat resumed>) = 3 [pid 5341] <... bpf resumed>) = 3 [pid 5339] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5343] <... prctl resumed>) = 0 [pid 5342] write(3, "1000", 4 [pid 5340] <... bpf resumed>) = 4 [pid 5341] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5343] setpgid(0, 0 [pid 5342] <... write resumed>) = 4 [pid 5340] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5339] <... bpf resumed>) = 4 [pid 5343] <... setpgid resumed>) = 0 [pid 5342] close(3 [pid 5341] <... bpf resumed>) = 4 [pid 5342] <... close resumed>) = 0 [pid 5341] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5342] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5339] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5343] <... openat resumed>) = 3 [pid 5343] write(3, "1000", 4) = 4 [pid 5342] <... bpf resumed>) = 3 [pid 5343] close(3) = 0 [pid 5342] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5343] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5341] <... bpf resumed>) = 5 [pid 5340] <... bpf resumed>) = 5 [pid 5339] <... bpf resumed>) = 5 [pid 5343] <... bpf resumed>) = 3 [pid 5339] perf_event_open( [pid 5342] <... bpf resumed>) = 4 [pid 5341] perf_event_open( [pid 5340] perf_event_open( [pid 5342] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5341] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5339] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5342] <... bpf resumed>) = 5 [pid 5340] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5339] exit_group(0 [pid 5340] exit_group(0 [pid 5342] perf_event_open( [pid 5339] <... exit_group resumed>) = ? [pid 5343] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5342] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5341] exit_group(0 [pid 5340] <... exit_group resumed>) = ? [pid 5343] <... bpf resumed>) = 4 [pid 5342] exit_group(0 [pid 5341] <... exit_group resumed>) = ? [pid 5343] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5342] <... exit_group resumed>) = ? [pid 5339] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5343] <... bpf resumed>) = 5 [pid 5343] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5343] exit_group(0 [pid 5340] +++ exited with 0 +++ [pid 5343] <... exit_group resumed>) = ? [pid 5341] +++ exited with 0 +++ [pid 5074] <... restart_syscall resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5340, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5341, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5344 attached [pid 5344] set_robust_list(0x555556880660, 24) = 0 [pid 5344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5344] setpgid(0, 0) = 0 [pid 5344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5344 ./strace-static-x86_64: Process 5345 attached [pid 5344] <... openat resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5345 [pid 5345] set_robust_list(0x555556880660, 24 [pid 5344] write(3, "1000", 4./strace-static-x86_64: Process 5346 attached [pid 5345] <... set_robust_list resumed>) = 0 [pid 5343] +++ exited with 0 +++ [pid 5342] +++ exited with 0 +++ [pid 5346] set_robust_list(0x555556880660, 24 [pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5344] <... write resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5346 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5343, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5342, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5346] <... set_robust_list resumed>) = 0 [pid 5345] <... prctl resumed>) = 0 [pid 5344] close(3 [pid 5346] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5345] setpgid(0, 0 [pid 5344] <... close resumed>) = 0 [pid 5346] <... prctl resumed>) = 0 [pid 5345] <... setpgid resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5346] setpgid(0, 0 [pid 5344] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5346] <... setpgid resumed>) = 0 [pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5347 attached [pid 5346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5347] set_robust_list(0x555556880660, 24 [pid 5346] <... openat resumed>) = 3 [pid 5345] <... openat resumed>) = 3 [pid 5347] <... set_robust_list resumed>) = 0 [pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5346] write(3, "1000", 4) = 4 [pid 5347] <... prctl resumed>) = 0 [pid 5346] close(3 [pid 5347] setpgid(0, 0 [pid 5346] <... close resumed>) = 0 [pid 5347] <... setpgid resumed>) = 0 [pid 5346] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5344] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5348 attached [pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5345] write(3, "1000", 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5347 [pid 5347] <... openat resumed>) = 3 [pid 5345] <... write resumed>) = 4 [pid 5347] write(3, "1000", 4) = 4 [pid 5348] set_robust_list(0x555556880660, 24 [pid 5346] <... bpf resumed>) = 3 [pid 5345] close(3 [pid 5344] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5348 [pid 5347] close(3 [pid 5348] <... set_robust_list resumed>) = 0 [pid 5347] <... close resumed>) = 0 [pid 5346] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5345] <... close resumed>) = 0 [pid 5344] <... bpf resumed>) = 4 [pid 5348] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5347] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5345] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5348] <... prctl resumed>) = 0 [pid 5348] setpgid(0, 0 [pid 5344] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5348] <... setpgid resumed>) = 0 [pid 5344] perf_event_open( [pid 5345] <... bpf resumed>) = 3 [pid 5348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5344] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5347] <... bpf resumed>) = 3 [pid 5344] exit_group(0) = ? [pid 5346] <... bpf resumed>) = 4 [pid 5348] <... openat resumed>) = 3 [pid 5347] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5346] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5345] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5348] write(3, "1000", 4) = 4 [pid 5346] <... bpf resumed>) = 5 [pid 5348] close(3 [pid 5347] <... bpf resumed>) = 4 [pid 5346] perf_event_open( [pid 5345] <... bpf resumed>) = 4 [pid 5348] <... close resumed>) = 0 [pid 5348] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5346] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5345] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5347] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5345] perf_event_open( [pid 5347] <... bpf resumed>) = 5 [pid 5346] exit_group(0 [pid 5345] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5348] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5347] perf_event_open( [pid 5346] <... exit_group resumed>) = ? [pid 5345] exit_group(0 [pid 5347] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5348] <... bpf resumed>) = 4 [pid 5347] exit_group(0 [pid 5344] +++ exited with 0 +++ [pid 5347] <... exit_group resumed>) = ? [pid 5345] <... exit_group resumed>) = ? [pid 5348] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5344, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5348] <... bpf resumed>) = 5 [pid 5348] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5346] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5346, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5348] exit_group(0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5349 attached [pid 5349] set_robust_list(0x555556880660, 24 [pid 5348] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5349 [pid 5349] <... set_robust_list resumed>) = 0 [pid 5345] +++ exited with 0 +++ [pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5345, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 5350 attached [pid 5349] <... prctl resumed>) = 0 [pid 5349] setpgid(0, 0) = 0 [pid 5350] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5350 [pid 5350] <... set_robust_list resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5350] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5351 attached [pid 5350] <... prctl resumed>) = 0 [pid 5349] <... openat resumed>) = 3 [pid 5348] +++ exited with 0 +++ [pid 5347] +++ exited with 0 +++ [pid 5350] setpgid(0, 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5347, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5351] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5351 [pid 5349] write(3, "1000", 4 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5350] <... setpgid resumed>) = 0 [pid 5350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5349] <... write resumed>) = 4 [pid 5351] <... set_robust_list resumed>) = 0 [pid 5350] <... openat resumed>) = 3 [pid 5349] close(3 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5349] <... close resumed>) = 0 [pid 5350] write(3, "1000", 4) = 4 [pid 5350] close(3) = 0 [pid 5351] <... prctl resumed>) = 0 [pid 5350] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5349] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5351] setpgid(0, 0 [pid 5350] <... bpf resumed>) = 3 [pid 5350] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5352 attached ) = 4 [pid 5352] set_robust_list(0x555556880660, 24) = 0 [pid 5352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5352] setpgid(0, 0) = 0 [pid 5352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5351] <... setpgid resumed>) = 0 [pid 5349] <... bpf resumed>) = 3 [pid 5352] <... openat resumed>) = 3 [pid 5350] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5353 attached ) = 3 [pid 5353] set_robust_list(0x555556880660, 24 [pid 5352] write(3, "1000", 4 [pid 5353] <... set_robust_list resumed>) = 0 [pid 5352] <... write resumed>) = 4 [pid 5352] close(3 [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5352] <... close resumed>) = 0 [pid 5351] write(3, "1000", 4 [pid 5353] <... prctl resumed>) = 0 [pid 5352] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5351] <... write resumed>) = 4 [pid 5349] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5353 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5352 [pid 5353] setpgid(0, 0 [pid 5351] close(3 [pid 5353] <... setpgid resumed>) = 0 [pid 5351] <... close resumed>) = 0 [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5351] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5349] <... bpf resumed>) = 4 [pid 5353] <... openat resumed>) = 3 [pid 5353] write(3, "1000", 4 [pid 5349] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5353] <... write resumed>) = 4 [pid 5352] <... bpf resumed>) = 3 [pid 5351] <... bpf resumed>) = 3 [pid 5351] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5353] close(3 [pid 5352] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5351] <... bpf resumed>) = 4 [pid 5351] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5353] <... close resumed>) = 0 [pid 5352] <... bpf resumed>) = 4 [pid 5350] <... bpf resumed>) = 5 [pid 5349] <... bpf resumed>) = 5 [pid 5353] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5352] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5351] <... bpf resumed>) = 5 [pid 5350] perf_event_open( [pid 5349] perf_event_open( [pid 5353] <... bpf resumed>) = 3 [pid 5352] <... bpf resumed>) = 5 [pid 5351] perf_event_open( [pid 5350] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5349] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5352] perf_event_open( [pid 5351] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5353] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5352] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5351] exit_group(0 [pid 5350] exit_group(0 [pid 5349] exit_group(0 [pid 5353] <... bpf resumed>) = 4 [pid 5352] exit_group(0 [pid 5353] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5349] <... exit_group resumed>) = ? [pid 5353] <... bpf resumed>) = 5 [pid 5352] <... exit_group resumed>) = ? [pid 5351] <... exit_group resumed>) = ? [pid 5350] <... exit_group resumed>) = ? [pid 5353] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5350] +++ exited with 0 +++ [pid 5349] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5350, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5349, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 5354 attached [pid 5353] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5353] <... exit_group resumed>) = ? [pid 5354] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5355 attached ) = 0 [pid 5351] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5354 [pid 5355] set_robust_list(0x555556880660, 24 [pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5355] <... set_robust_list resumed>) = 0 [pid 5354] <... prctl resumed>) = 0 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5354] setpgid(0, 0 [pid 5355] <... prctl resumed>) = 0 [pid 5354] <... setpgid resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5355 [pid 5354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5355] setpgid(0, 0) = 0 [pid 5354] <... openat resumed>) = 3 [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5354] write(3, "1000", 4 [pid 5355] write(3, "1000", 4 [pid 5354] <... write resumed>) = 4 [pid 5355] <... write resumed>) = 4 [pid 5354] close(3 [pid 5355] close(3) = 0 [pid 5354] <... close resumed>) = 0 [pid 5355] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5354] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5355] <... bpf resumed>) = 3 [pid 5354] <... bpf resumed>) = 3 [pid 5352] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5352, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5355] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5356 attached ) = 4 [pid 5354] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5356] set_robust_list(0x555556880660, 24 [pid 5354] <... bpf resumed>) = 4 [pid 5354] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5357 attached [pid 5356] <... set_robust_list resumed>) = 0 [pid 5355] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5353] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5356 [pid 5357] set_robust_list(0x555556880660, 24 [pid 5356] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5357] <... set_robust_list resumed>) = 0 [pid 5356] <... prctl resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5357 ./strace-static-x86_64: Process 5358 attached [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5356] setpgid(0, 0 [pid 5358] set_robust_list(0x555556880660, 24 [pid 5356] <... setpgid resumed>) = 0 [pid 5358] <... set_robust_list resumed>) = 0 [pid 5357] <... prctl resumed>) = 0 [pid 5356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5358] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5357] setpgid(0, 0 [pid 5358] <... prctl resumed>) = 0 [pid 5357] <... setpgid resumed>) = 0 [pid 5356] <... openat resumed>) = 3 [pid 5358] setpgid(0, 0 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5356] write(3, "1000", 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5358 [pid 5358] <... setpgid resumed>) = 0 [pid 5356] <... write resumed>) = 4 [pid 5358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5356] close(3 [pid 5358] <... openat resumed>) = 3 [pid 5356] <... close resumed>) = 0 [pid 5354] <... bpf resumed>) = 5 [pid 5355] <... bpf resumed>) = 5 [pid 5356] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5358] write(3, "1000", 4 [pid 5357] <... openat resumed>) = 3 [pid 5356] <... bpf resumed>) = 3 [pid 5355] perf_event_open( [pid 5354] perf_event_open( [pid 5358] <... write resumed>) = 4 [pid 5356] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5358] close(3 [pid 5354] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5358] <... close resumed>) = 0 [pid 5358] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5357] write(3, "1000", 4 [pid 5355] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5358] <... bpf resumed>) = 3 [pid 5357] <... write resumed>) = 4 [pid 5355] exit_group(0 [pid 5357] close(3) = 0 [pid 5357] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5356] <... bpf resumed>) = 4 [pid 5355] <... exit_group resumed>) = ? [pid 5358] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5354] exit_group(0 [pid 5358] <... bpf resumed>) = 4 [pid 5357] <... bpf resumed>) = 3 [pid 5356] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5354] <... exit_group resumed>) = ? [pid 5356] <... bpf resumed>) = 5 [pid 5356] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5358] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5357] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5356] exit_group(0 [pid 5358] <... bpf resumed>) = 5 [pid 5356] <... exit_group resumed>) = ? [pid 5358] perf_event_open( [pid 5357] <... bpf resumed>) = 4 [pid 5358] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5357] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5355] +++ exited with 0 +++ [pid 5358] exit_group(0) = ? [pid 5357] <... bpf resumed>) = 5 [pid 5357] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5357] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5356] +++ exited with 0 +++ [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5359 attached [pid 5357] exit_group(0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5356, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5359] set_robust_list(0x555556880660, 24) = 0 [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5359] setpgid(0, 0) = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5357] <... exit_group resumed>) = ? [pid 5354] +++ exited with 0 +++ [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5359 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5354, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5359] write(3, "1000", 4./strace-static-x86_64: Process 5360 attached ) = 4 [pid 5360] set_robust_list(0x555556880660, 24 [pid 5359] close(3 [pid 5360] <... set_robust_list resumed>) = 0 [pid 5359] <... close resumed>) = 0 [pid 5358] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5360 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5358, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5360] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5359] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5357] +++ exited with 0 +++ [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5360] <... prctl resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5360] setpgid(0, 0) = 0 [pid 5360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5359] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5361 attached [pid 5360] <... openat resumed>) = 3 [pid 5359] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5361] set_robust_list(0x555556880660, 24 [pid 5360] write(3, "1000", 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5361 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5362 attached [pid 5361] <... set_robust_list resumed>) = 0 [pid 5360] <... write resumed>) = 4 [pid 5359] <... bpf resumed>) = 4 [pid 5362] set_robust_list(0x555556880660, 24 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5360] close(3 [pid 5359] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5362] <... set_robust_list resumed>) = 0 [pid 5361] <... prctl resumed>) = 0 [pid 5360] <... close resumed>) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5362 ./strace-static-x86_64: Process 5363 attached [pid 5363] set_robust_list(0x555556880660, 24 [pid 5362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5361] setpgid(0, 0 [pid 5360] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5363] <... set_robust_list resumed>) = 0 [pid 5362] <... prctl resumed>) = 0 [pid 5361] <... setpgid resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5363 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5362] setpgid(0, 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5363] <... prctl resumed>) = 0 [pid 5362] <... setpgid resumed>) = 0 [pid 5361] <... openat resumed>) = 3 [pid 5363] setpgid(0, 0 [pid 5362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5363] <... setpgid resumed>) = 0 [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5362] <... openat resumed>) = 3 [pid 5361] write(3, "1000", 4 [pid 5360] <... bpf resumed>) = 3 [pid 5362] write(3, "1000", 4 [pid 5361] <... write resumed>) = 4 [pid 5362] <... write resumed>) = 4 [pid 5360] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5362] close(3 [pid 5361] close(3 [pid 5363] <... openat resumed>) = 3 [pid 5362] <... close resumed>) = 0 [pid 5360] <... bpf resumed>) = 4 [pid 5361] <... close resumed>) = 0 [pid 5362] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5360] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5363] write(3, "1000", 4 [pid 5361] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5363] <... write resumed>) = 4 [pid 5363] close(3) = 0 [pid 5363] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5362] <... bpf resumed>) = 3 [pid 5363] <... bpf resumed>) = 3 [pid 5361] <... bpf resumed>) = 3 [pid 5360] <... bpf resumed>) = 5 [pid 5359] <... bpf resumed>) = 5 [pid 5362] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5361] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5360] perf_event_open( [pid 5359] perf_event_open( [pid 5363] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5360] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5359] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5363] <... bpf resumed>) = 4 [pid 5363] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5362] <... bpf resumed>) = 4 [pid 5361] <... bpf resumed>) = 4 [pid 5360] exit_group(0 [pid 5359] exit_group(0 [pid 5363] <... bpf resumed>) = 5 [pid 5362] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5361] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5360] <... exit_group resumed>) = ? [pid 5359] <... exit_group resumed>) = ? [pid 5363] perf_event_open( [pid 5362] <... bpf resumed>) = 5 [pid 5361] <... bpf resumed>) = 5 [pid 5360] +++ exited with 0 +++ [pid 5363] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5362] perf_event_open( [pid 5361] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5363] exit_group(0 [pid 5362] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5361] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5362] exit_group(0 [pid 5361] exit_group(0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5364 attached [pid 5363] <... exit_group resumed>) = ? [pid 5362] <... exit_group resumed>) = ? [pid 5364] set_robust_list(0x555556880660, 24 [pid 5361] <... exit_group resumed>) = ? [pid 5359] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5364 [pid 5364] <... set_robust_list resumed>) = 0 [pid 5364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5364] setpgid(0, 0) = 0 [pid 5364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5364] write(3, "1000", 4 [pid 5362] +++ exited with 0 +++ [pid 5364] <... write resumed>) = 4 [pid 5364] close(3 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5362, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5364] <... close resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5359, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5364] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5365 attached [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5365] set_robust_list(0x555556880660, 24 [pid 5364] <... bpf resumed>) = 3 [pid 5365] <... set_robust_list resumed>) = 0 [pid 5364] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5366 attached [pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5365 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5366 [pid 5366] set_robust_list(0x555556880660, 24 [pid 5365] <... prctl resumed>) = 0 [pid 5366] <... set_robust_list resumed>) = 0 [pid 5365] setpgid(0, 0 [pid 5366] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5365] <... setpgid resumed>) = 0 [pid 5366] <... prctl resumed>) = 0 [pid 5366] setpgid(0, 0 [pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5364] <... bpf resumed>) = 4 [pid 5366] <... setpgid resumed>) = 0 [pid 5366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5365] <... openat resumed>) = 3 [pid 5364] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5365] write(3, "1000", 4 [pid 5366] <... openat resumed>) = 3 [pid 5365] <... write resumed>) = 4 [pid 5363] +++ exited with 0 +++ [pid 5361] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5366] write(3, "1000", 4 [pid 5365] close(3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5366] <... write resumed>) = 4 [pid 5365] <... close resumed>) = 0 [pid 5366] close(3) = 0 [pid 5366] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5365] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5366] <... bpf resumed>) = 3 [pid 5365] <... bpf resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5365] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5366] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5367 attached ) = 4 [pid 5365] <... bpf resumed>) = 4 [pid 5364] <... bpf resumed>) = 5 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5367] set_robust_list(0x555556880660, 24./strace-static-x86_64: Process 5368 attached ) = 0 [pid 5365] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5364] perf_event_open( [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5367 [pid 5368] set_robust_list(0x555556880660, 24 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5366] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5364] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5368 [pid 5368] <... set_robust_list resumed>) = 0 [pid 5367] <... prctl resumed>) = 0 [pid 5368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5367] setpgid(0, 0 [pid 5366] <... bpf resumed>) = 5 [pid 5365] <... bpf resumed>) = 5 [pid 5364] exit_group(0 [pid 5368] <... prctl resumed>) = 0 [pid 5367] <... setpgid resumed>) = 0 [pid 5366] perf_event_open( [pid 5368] setpgid(0, 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5366] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5365] perf_event_open( [pid 5364] <... exit_group resumed>) = ? [pid 5368] <... setpgid resumed>) = 0 [pid 5367] <... openat resumed>) = 3 [pid 5366] exit_group(0 [pid 5365] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5367] write(3, "1000", 4 [pid 5365] exit_group(0) = ? [pid 5368] <... openat resumed>) = 3 [pid 5367] <... write resumed>) = 4 [pid 5366] <... exit_group resumed>) = ? [pid 5364] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5364, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5368] write(3, "1000", 4 [pid 5367] close(3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5368] <... write resumed>) = 4 [pid 5367] <... close resumed>) = 0 ./strace-static-x86_64: Process 5369 attached [pid 5367] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5368] close(3 [pid 5369] set_robust_list(0x555556880660, 24) = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5368] <... close resumed>) = 0 [pid 5367] <... bpf resumed>) = 3 [pid 5366] +++ exited with 0 +++ [pid 5365] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5369 [pid 5369] write(3, "1000", 4 [pid 5368] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5369] <... write resumed>) = 4 [pid 5367] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5369] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5365, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5369] <... close resumed>) = 0 [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5369] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5369] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5368] <... bpf resumed>) = 3 [pid 5367] <... bpf resumed>) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5369] <... bpf resumed>) = 4 [pid 5369] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5370 attached [pid 5368] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5367] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5370 [pid 5370] set_robust_list(0x555556880660, 24) = 0 [pid 5369] <... bpf resumed>) = 5 [pid 5370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] perf_event_open( [pid 5368] <... bpf resumed>) = 4 [pid 5367] <... bpf resumed>) = 5 ./strace-static-x86_64: Process 5371 attached [pid 5370] setpgid(0, 0 [pid 5371] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5371 [pid 5371] <... set_robust_list resumed>) = 0 [pid 5370] <... setpgid resumed>) = 0 [pid 5369] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5368] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5367] perf_event_open( [pid 5371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5368] <... bpf resumed>) = 5 [pid 5367] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5371] <... prctl resumed>) = 0 [pid 5370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5368] perf_event_open( [pid 5371] setpgid(0, 0 [pid 5370] <... openat resumed>) = 3 [pid 5368] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5371] <... setpgid resumed>) = 0 [pid 5371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5369] exit_group(0 [pid 5368] exit_group(0 [pid 5371] <... openat resumed>) = 3 [pid 5370] write(3, "1000", 4) = 4 [pid 5367] exit_group(0 [pid 5371] write(3, "1000", 4 [pid 5370] close(3 [pid 5369] <... exit_group resumed>) = ? [pid 5368] <... exit_group resumed>) = ? [pid 5367] <... exit_group resumed>) = ? [pid 5371] <... write resumed>) = 4 [pid 5370] <... close resumed>) = 0 [pid 5371] close(3) = 0 [pid 5370] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5368] +++ exited with 0 +++ [pid 5371] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5368, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5371] <... bpf resumed>) = 3 [pid 5370] <... bpf resumed>) = 3 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5371] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5372 attached ) = 4 [pid 5370] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5372] set_robust_list(0x555556880660, 24) = 0 [pid 5372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5371] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5370] <... bpf resumed>) = 4 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5372 [pid 5372] setpgid(0, 0) = 0 [pid 5370] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5372] write(3, "1000", 4) = 4 [pid 5372] close(3) = 0 [pid 5372] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5372] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5369] +++ exited with 0 +++ [pid 5367] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5372] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5373 attached ./strace-static-x86_64: Process 5374 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5373 [pid 5374] set_robust_list(0x555556880660, 24 [pid 5373] set_robust_list(0x555556880660, 24 [pid 5372] <... bpf resumed>) = 5 [pid 5371] <... bpf resumed>) = 5 [pid 5370] <... bpf resumed>) = 5 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5374 [pid 5374] <... set_robust_list resumed>) = 0 [pid 5372] perf_event_open( [pid 5371] perf_event_open( [pid 5374] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5373] <... set_robust_list resumed>) = 0 [pid 5372] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5371] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5370] perf_event_open( [pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5374] <... prctl resumed>) = 0 [pid 5373] <... prctl resumed>) = 0 [pid 5372] exit_group(0 [pid 5371] exit_group(0 [pid 5370] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5374] setpgid(0, 0 [pid 5373] setpgid(0, 0) = 0 [pid 5374] <... setpgid resumed>) = 0 [pid 5372] <... exit_group resumed>) = ? [pid 5371] <... exit_group resumed>) = ? [pid 5374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5370] exit_group(0 [pid 5374] <... openat resumed>) = 3 [pid 5374] write(3, "1000", 4) = 4 [pid 5374] close(3) = 0 [pid 5374] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5373] <... openat resumed>) = 3 [pid 5370] <... exit_group resumed>) = ? [pid 5373] write(3, "1000", 4) = 4 [pid 5373] close(3 [pid 5374] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5373] <... close resumed>) = 0 [pid 5373] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5374] <... bpf resumed>) = 4 [pid 5373] <... bpf resumed>) = 3 [pid 5370] +++ exited with 0 +++ [pid 5374] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5370, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5373] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5373] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5375 attached [pid 5375] set_robust_list(0x555556880660, 24 [pid 5374] <... bpf resumed>) = 5 [pid 5371] +++ exited with 0 +++ [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5375 [pid 5375] <... set_robust_list resumed>) = 0 [pid 5374] perf_event_open( [pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5374] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5375] <... prctl resumed>) = 0 [pid 5374] exit_group(0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5371, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5375] setpgid(0, 0 [pid 5374] <... exit_group resumed>) = ? [pid 5373] <... bpf resumed>) = 5 [pid 5372] +++ exited with 0 +++ [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5376 attached [pid 5375] <... setpgid resumed>) = 0 [pid 5373] perf_event_open( [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5372, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5373] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5376] set_robust_list(0x555556880660, 24) = 0 [pid 5376] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5373] exit_group(0 [pid 5376] <... prctl resumed>) = 0 [pid 5376] setpgid(0, 0) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5373] <... exit_group resumed>) = ? [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5376 ./strace-static-x86_64: Process 5377 attached [pid 5376] <... openat resumed>) = 3 [pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5377 [pid 5377] set_robust_list(0x555556880660, 24 [pid 5376] write(3, "1000", 4 [pid 5375] <... openat resumed>) = 3 [pid 5377] <... set_robust_list resumed>) = 0 [pid 5376] <... write resumed>) = 4 [pid 5377] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5375] write(3, "1000", 4 [pid 5377] <... prctl resumed>) = 0 [pid 5376] close(3 [pid 5375] <... write resumed>) = 4 [pid 5377] setpgid(0, 0 [pid 5376] <... close resumed>) = 0 [pid 5375] close(3 [pid 5377] <... setpgid resumed>) = 0 [pid 5376] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5375] <... close resumed>) = 0 [pid 5377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5376] <... bpf resumed>) = 3 [pid 5375] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5377] <... openat resumed>) = 3 [pid 5375] <... bpf resumed>) = 3 [pid 5377] write(3, "1000", 4) = 4 [pid 5377] close(3 [pid 5376] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5377] <... close resumed>) = 0 [pid 5375] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5377] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5376] <... bpf resumed>) = 4 [pid 5374] +++ exited with 0 +++ [pid 5377] <... bpf resumed>) = 3 [pid 5375] <... bpf resumed>) = 4 [pid 5373] +++ exited with 0 +++ [pid 5376] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5375] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5374, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5377] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144./strace-static-x86_64: Process 5378 attached [pid 5378] set_robust_list(0x555556880660, 24 [pid 5377] <... bpf resumed>) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5378 [pid 5378] <... set_robust_list resumed>) = 0 [pid 5378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5377] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5378] setpgid(0, 0) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5379 attached ) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5379 [pid 5379] set_robust_list(0x555556880660, 24 [pid 5378] write(3, "1000", 4 [pid 5379] <... set_robust_list resumed>) = 0 [pid 5377] <... bpf resumed>) = 5 [pid 5376] <... bpf resumed>) = 5 [pid 5375] <... bpf resumed>) = 5 [pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5378] <... write resumed>) = 4 [pid 5377] perf_event_open( [pid 5376] perf_event_open( [pid 5375] perf_event_open( [pid 5379] <... prctl resumed>) = 0 [pid 5378] close(3 [pid 5377] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5376] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5375] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5379] setpgid(0, 0) = 0 [pid 5378] <... close resumed>) = 0 [pid 5377] exit_group(0 [pid 5376] exit_group(0 [pid 5375] exit_group(0 [pid 5378] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5377] <... exit_group resumed>) = ? [pid 5379] <... openat resumed>) = 3 [pid 5378] <... bpf resumed>) = 3 [pid 5376] <... exit_group resumed>) = ? [pid 5375] <... exit_group resumed>) = ? [pid 5379] write(3, "1000", 4) = 4 [pid 5379] close(3) = 0 [pid 5379] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5377] +++ exited with 0 +++ [pid 5375] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5377, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5378] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5379] <... bpf resumed>) = 3 [pid 5378] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5380 attached [pid 5380] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5380 [pid 5380] <... set_robust_list resumed>) = 0 [pid 5378] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5381 attached [pid 5380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5379] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5378] <... bpf resumed>) = 5 [pid 5381] set_robust_list(0x555556880660, 24 [pid 5380] <... prctl resumed>) = 0 [pid 5381] <... set_robust_list resumed>) = 0 [pid 5378] perf_event_open( [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5381 [pid 5380] setpgid(0, 0 [pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5380] <... setpgid resumed>) = 0 [pid 5379] <... bpf resumed>) = 4 [pid 5378] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5381] <... prctl resumed>) = 0 [pid 5380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5379] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5381] setpgid(0, 0) = 0 [pid 5380] <... openat resumed>) = 3 [pid 5380] write(3, "1000", 4 [pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5378] exit_group(0 [pid 5380] <... write resumed>) = 4 [pid 5378] <... exit_group resumed>) = ? [pid 5381] <... openat resumed>) = 3 [pid 5380] close(3) = 0 [pid 5381] write(3, "1000", 4) = 4 [pid 5380] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5381] close(3) = 0 [pid 5380] <... bpf resumed>) = 3 [pid 5380] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5381] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5379] <... bpf resumed>) = 5 [pid 5376] +++ exited with 0 +++ [pid 5380] <... bpf resumed>) = 4 [pid 5381] <... bpf resumed>) = 3 [pid 5380] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5379] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5376, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5379] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5379] exit_group(0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5382 attached [pid 5382] set_robust_list(0x555556880660, 24 [pid 5381] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5379] <... exit_group resumed>) = ? [pid 5382] <... set_robust_list resumed>) = 0 [pid 5381] <... bpf resumed>) = 4 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5382 [pid 5382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5382] setpgid(0, 0 [pid 5378] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5378, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5381] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5382] <... setpgid resumed>) = 0 [pid 5380] <... bpf resumed>) = 5 [pid 5382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5380] perf_event_open( [pid 5070] <... restart_syscall resumed>) = 0 [pid 5382] <... openat resumed>) = 3 [pid 5380] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5382] write(3, "1000", 4) = 4 [pid 5381] <... bpf resumed>) = 5 [pid 5380] exit_group(0 [pid 5379] +++ exited with 0 +++ [pid 5381] perf_event_open( [pid 5380] <... exit_group resumed>) = ? [pid 5382] close(3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5382] <... close resumed>) = 0 [pid 5382] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5383 attached [pid 5381] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5383] set_robust_list(0x555556880660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5383 [pid 5381] exit_group(0 [pid 5383] <... set_robust_list resumed>) = 0 [pid 5381] <... exit_group resumed>) = ? [pid 5382] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5382] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5384 attached [pid 5383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5384] set_robust_list(0x555556880660, 24 [pid 5383] <... prctl resumed>) = 0 [pid 5384] <... set_robust_list resumed>) = 0 [pid 5383] setpgid(0, 0 [pid 5382] <... bpf resumed>) = 5 [pid 5380] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5384 [pid 5383] <... setpgid resumed>) = 0 [pid 5382] perf_event_open( [pid 5384] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5380, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5384] <... prctl resumed>) = 0 [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5382] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5384] setpgid(0, 0 [pid 5383] <... openat resumed>) = 3 [pid 5384] <... setpgid resumed>) = 0 [pid 5383] write(3, "1000", 4 [pid 5382] exit_group(0 [pid 5384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5383] <... write resumed>) = 4 [pid 5383] close(3 [pid 5382] <... exit_group resumed>) = ? [pid 5384] <... openat resumed>) = 3 [pid 5383] <... close resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5383] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5384] write(3, "1000", 4 [pid 5383] <... bpf resumed>) = 3 [pid 5381] +++ exited with 0 +++ [pid 5384] <... write resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5384] close(3) = 0 ./strace-static-x86_64: Process 5385 attached [pid 5384] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5385] set_robust_list(0x555556880660, 24 [pid 5384] <... bpf resumed>) = 3 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5385 [pid 5385] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5386 attached [pid 5386] set_robust_list(0x555556880660, 24 [pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5383] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5386] <... set_robust_list resumed>) = 0 [pid 5385] <... prctl resumed>) = 0 [pid 5384] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5383] <... bpf resumed>) = 4 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5386 [pid 5386] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5385] setpgid(0, 0 [pid 5384] <... bpf resumed>) = 4 [pid 5382] +++ exited with 0 +++ [pid 5385] <... setpgid resumed>) = 0 [pid 5386] <... prctl resumed>) = 0 [pid 5386] setpgid(0, 0 [pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5382, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5386] <... setpgid resumed>) = 0 [pid 5385] <... openat resumed>) = 3 [pid 5386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5385] write(3, "1000", 4 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5387 attached [pid 5386] <... openat resumed>) = 3 [pid 5385] <... write resumed>) = 4 [pid 5384] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5387] set_robust_list(0x555556880660, 24 [pid 5386] write(3, "1000", 4 [pid 5385] close(3 [pid 5387] <... set_robust_list resumed>) = 0 [pid 5386] <... write resumed>) = 4 [pid 5385] <... close resumed>) = 0 [pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5386] close(3 [pid 5385] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5387] <... prctl resumed>) = 0 [pid 5386] <... close resumed>) = 0 [pid 5383] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5387 [pid 5387] setpgid(0, 0) = 0 [pid 5385] <... bpf resumed>) = 3 [pid 5386] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5385] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5386] <... bpf resumed>) = 3 [pid 5386] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5385] <... bpf resumed>) = 4 [pid 5387] write(3, "1000", 4 [pid 5384] <... bpf resumed>) = 5 [pid 5383] <... bpf resumed>) = 5 [pid 5387] <... write resumed>) = 4 [pid 5387] close(3 [pid 5386] <... bpf resumed>) = 4 [pid 5385] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5384] perf_event_open( [pid 5383] perf_event_open( [pid 5387] <... close resumed>) = 0 [pid 5386] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5385] <... bpf resumed>) = 5 [pid 5384] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5383] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5387] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5386] <... bpf resumed>) = 5 [pid 5385] perf_event_open( [pid 5384] exit_group(0 [pid 5383] exit_group(0 [pid 5387] <... bpf resumed>) = 3 [pid 5386] perf_event_open( [pid 5385] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5384] <... exit_group resumed>) = ? [pid 5383] <... exit_group resumed>) = ? [pid 5386] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5385] exit_group(0 [pid 5387] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5386] exit_group(0 [pid 5387] <... bpf resumed>) = 4 [pid 5386] <... exit_group resumed>) = ? [pid 5385] <... exit_group resumed>) = ? [pid 5387] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5387] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5387] exit_group(0) = ? [pid 5384] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5384, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5388 attached [pid 5383] +++ exited with 0 +++ [pid 5388] set_robust_list(0x555556880660, 24 [pid 5385] +++ exited with 0 +++ [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5388 [pid 5388] <... set_robust_list resumed>) = 0 [pid 5388] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5383, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5388] <... prctl resumed>) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5388] setpgid(0, 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5388] <... setpgid resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5390 attached ./strace-static-x86_64: Process 5389 attached [pid 5388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5390] set_robust_list(0x555556880660, 24 [pid 5389] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5389 [pid 5390] <... set_robust_list resumed>) = 0 [pid 5389] <... set_robust_list resumed>) = 0 [pid 5390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5388] <... openat resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5390 [pid 5390] <... prctl resumed>) = 0 [pid 5389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5388] write(3, "1000", 4 [pid 5390] setpgid(0, 0 [pid 5389] <... prctl resumed>) = 0 [pid 5388] <... write resumed>) = 4 [pid 5390] <... setpgid resumed>) = 0 [pid 5389] setpgid(0, 0 [pid 5388] close(3 [pid 5390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5389] <... setpgid resumed>) = 0 [pid 5388] <... close resumed>) = 0 [pid 5390] <... openat resumed>) = 3 [pid 5389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5388] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5390] write(3, "1000", 4 [pid 5389] <... openat resumed>) = 3 [pid 5387] +++ exited with 0 +++ [pid 5386] +++ exited with 0 +++ [pid 5390] <... write resumed>) = 4 [pid 5389] write(3, "1000", 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5386, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5390] close(3 [pid 5389] <... write resumed>) = 4 [pid 5390] <... close resumed>) = 0 [pid 5389] close(3 [pid 5388] <... bpf resumed>) = 3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5390] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5389] <... close resumed>) = 0 [pid 5388] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5389] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5391 attached [pid 5390] <... bpf resumed>) = 3 [pid 5389] <... bpf resumed>) = 3 [pid 5388] <... bpf resumed>) = 4 [pid 5391] set_robust_list(0x555556880660, 24 [pid 5388] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5391 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5390] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5388] <... bpf resumed>) = 5 ./strace-static-x86_64: Process 5392 attached [pid 5391] <... set_robust_list resumed>) = 0 [pid 5390] <... bpf resumed>) = 4 [pid 5389] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5388] perf_event_open( [pid 5392] set_robust_list(0x555556880660, 24 [pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5389] <... bpf resumed>) = 4 [pid 5392] <... set_robust_list resumed>) = 0 [pid 5391] <... prctl resumed>) = 0 [pid 5388] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5392 [pid 5392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5391] setpgid(0, 0 [pid 5390] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5392] <... prctl resumed>) = 0 [pid 5391] <... setpgid resumed>) = 0 [pid 5390] <... bpf resumed>) = 5 [pid 5392] setpgid(0, 0 [pid 5388] exit_group(0 [pid 5392] <... setpgid resumed>) = 0 [pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5389] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5388] <... exit_group resumed>) = ? [pid 5392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5390] perf_event_open( [pid 5392] <... openat resumed>) = 3 [pid 5391] <... openat resumed>) = 3 [pid 5390] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5389] <... bpf resumed>) = 5 [pid 5391] write(3, "1000", 4 [pid 5390] exit_group(0 [pid 5391] <... write resumed>) = 4 [pid 5391] close(3) = 0 [pid 5391] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5392] write(3, "1000", 4 [pid 5391] <... bpf resumed>) = 3 [pid 5390] <... exit_group resumed>) = ? [pid 5389] perf_event_open( [pid 5392] <... write resumed>) = 4 [pid 5389] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5392] close(3 [pid 5391] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5392] <... close resumed>) = 0 [pid 5391] <... bpf resumed>) = 4 [pid 5389] exit_group(0 [pid 5392] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5389] <... exit_group resumed>) = ? [pid 5392] <... bpf resumed>) = 3 [pid 5391] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5391] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5391] exit_group(0 [pid 5392] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5388] +++ exited with 0 +++ [pid 5391] <... exit_group resumed>) = ? [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5388, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5392] <... bpf resumed>) = 4 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5392] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5389] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5389, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5393 attached [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5393 ./strace-static-x86_64: Process 5394 attached [pid 5393] set_robust_list(0x555556880660, 24 [pid 5392] <... bpf resumed>) = 5 [pid 5390] +++ exited with 0 +++ [pid 5394] set_robust_list(0x555556880660, 24 [pid 5393] <... set_robust_list resumed>) = 0 [pid 5392] perf_event_open( [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5394 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5390, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5394] <... set_robust_list resumed>) = 0 [pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5392] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5393] <... prctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5395 attached [pid 5394] <... prctl resumed>) = 0 [pid 5392] exit_group(0 [pid 5394] setpgid(0, 0 [pid 5395] set_robust_list(0x555556880660, 24 [pid 5393] setpgid(0, 0 [pid 5392] <... exit_group resumed>) = ? [pid 5395] <... set_robust_list resumed>) = 0 [pid 5394] <... setpgid resumed>) = 0 [pid 5393] <... setpgid resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5395 [pid 5394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5392] +++ exited with 0 +++ [pid 5394] <... openat resumed>) = 3 [pid 5395] <... prctl resumed>) = 0 [pid 5395] setpgid(0, 0 [pid 5394] write(3, "1000", 4 [pid 5393] write(3, "1000", 4 [pid 5391] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5392, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5395] <... setpgid resumed>) = 0 [pid 5394] <... write resumed>) = 4 [pid 5393] <... write resumed>) = 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5396 attached [pid 5395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5394] close(3 [pid 5393] close(3 [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5394] <... close resumed>) = 0 [pid 5393] <... close resumed>) = 0 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5396] set_robust_list(0x555556880660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5396 [pid 5395] <... openat resumed>) = 3 [pid 5393] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5396] <... set_robust_list resumed>) = 0 [pid 5395] write(3, "1000", 4 [pid 5394] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5396] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5395] <... write resumed>) = 4 [pid 5393] <... bpf resumed>) = 3 [pid 5393] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5396] <... prctl resumed>) = 0 [pid 5395] close(3 [pid 5394] <... bpf resumed>) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5397 attached [pid 5396] setpgid(0, 0 [pid 5395] <... close resumed>) = 0 [pid 5394] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5393] <... bpf resumed>) = 4 [pid 5397] set_robust_list(0x555556880660, 24 [pid 5396] <... setpgid resumed>) = 0 [pid 5395] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5397] <... set_robust_list resumed>) = 0 [pid 5394] <... bpf resumed>) = 4 [pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5395] <... bpf resumed>) = 3 [pid 5394] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5393] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5397] <... prctl resumed>) = 0 [pid 5396] <... openat resumed>) = 3 [pid 5394] <... bpf resumed>) = 5 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5397 [pid 5397] setpgid(0, 0 [pid 5393] <... bpf resumed>) = 5 [pid 5397] <... setpgid resumed>) = 0 [pid 5393] perf_event_open( [pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5396] write(3, "1000", 4 [pid 5395] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5394] perf_event_open( [pid 5393] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5397] <... openat resumed>) = 3 [pid 5396] <... write resumed>) = 4 [pid 5395] <... bpf resumed>) = 4 [pid 5394] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5397] write(3, "1000", 4 [pid 5396] close(3 [pid 5395] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5393] exit_group(0 [pid 5397] <... write resumed>) = 4 [pid 5396] <... close resumed>) = 0 [pid 5395] <... bpf resumed>) = 5 [pid 5393] <... exit_group resumed>) = ? [pid 5397] close(3 [pid 5396] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5395] perf_event_open( [pid 5394] exit_group(0 [pid 5397] <... close resumed>) = 0 [pid 5397] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5396] <... bpf resumed>) = 3 [pid 5395] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5394] <... exit_group resumed>) = ? [pid 5396] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5397] <... bpf resumed>) = 3 [pid 5395] exit_group(0 [pid 5396] <... bpf resumed>) = 4 [pid 5396] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5395] <... exit_group resumed>) = ? [pid 5396] <... bpf resumed>) = 5 [pid 5393] +++ exited with 0 +++ [pid 5396] perf_event_open( [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5396] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5396] exit_group(0) = ? [pid 5397] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5394] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5394, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5397] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5399 attached [pid 5397] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5398 ./strace-static-x86_64: Process 5398 attached [pid 5399] set_robust_list(0x555556880660, 24 [pid 5398] set_robust_list(0x555556880660, 24 [pid 5399] <... set_robust_list resumed>) = 0 [pid 5395] +++ exited with 0 +++ [pid 5398] <... set_robust_list resumed>) = 0 [pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5397] <... bpf resumed>) = 5 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5399 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5395, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5399] <... prctl resumed>) = 0 [pid 5397] perf_event_open( [pid 5398] <... prctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5400 attached [pid 5399] setpgid(0, 0 [pid 5397] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5399] <... setpgid resumed>) = 0 [pid 5398] setpgid(0, 0) = 0 [pid 5400] set_robust_list(0x555556880660, 24 [pid 5398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5398] <... openat resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5400 [pid 5398] write(3, "1000", 4) = 4 [pid 5397] exit_group(0 [pid 5400] <... set_robust_list resumed>) = 0 [pid 5397] <... exit_group resumed>) = ? [pid 5398] close(3 [pid 5400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5398] <... close resumed>) = 0 [pid 5398] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5400] <... prctl resumed>) = 0 [pid 5398] <... bpf resumed>) = 3 [pid 5399] <... openat resumed>) = 3 [pid 5398] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5400] setpgid(0, 0 [pid 5399] write(3, "1000", 4 [pid 5396] +++ exited with 0 +++ [pid 5400] <... setpgid resumed>) = 0 [pid 5398] <... bpf resumed>) = 4 [pid 5399] <... write resumed>) = 4 [pid 5397] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5396, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5399] close(3 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5400] <... openat resumed>) = 3 [pid 5399] <... close resumed>) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5400] write(3, "1000", 4 [pid 5399] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5401 attached [pid 5400] <... write resumed>) = 4 [pid 5398] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5399] <... bpf resumed>) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5401] set_robust_list(0x555556880660, 24 [pid 5400] close(3 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5401 [pid 5401] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5402 attached [pid 5401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5400] <... close resumed>) = 0 [pid 5402] set_robust_list(0x555556880660, 24 [pid 5401] <... prctl resumed>) = 0 [pid 5400] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5402] <... set_robust_list resumed>) = 0 [pid 5401] setpgid(0, 0 [pid 5402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5401] <... setpgid resumed>) = 0 [pid 5400] <... bpf resumed>) = 3 [pid 5398] <... bpf resumed>) = 5 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5402 [pid 5402] <... prctl resumed>) = 0 [pid 5401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5399] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5402] setpgid(0, 0 [pid 5401] <... openat resumed>) = 3 [pid 5400] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5398] perf_event_open( [pid 5402] <... setpgid resumed>) = 0 [pid 5401] write(3, "1000", 4 [pid 5400] <... bpf resumed>) = 4 [pid 5398] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5399] <... bpf resumed>) = 4 [pid 5402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5401] <... write resumed>) = 4 [pid 5398] exit_group(0 [pid 5399] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5401] close(3 [pid 5398] <... exit_group resumed>) = ? [pid 5399] <... bpf resumed>) = 5 [pid 5402] <... openat resumed>) = 3 [pid 5401] <... close resumed>) = 0 [pid 5399] perf_event_open( [pid 5402] write(3, "1000", 4 [pid 5401] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5400] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5399] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5402] <... write resumed>) = 4 [pid 5402] close(3 [pid 5401] <... bpf resumed>) = 3 [pid 5402] <... close resumed>) = 0 [pid 5401] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5399] exit_group(0 [pid 5402] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5399] <... exit_group resumed>) = ? [pid 5401] <... bpf resumed>) = 4 [pid 5402] <... bpf resumed>) = 3 [pid 5401] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5400] <... bpf resumed>) = 5 [pid 5398] +++ exited with 0 +++ [pid 5402] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5400] perf_event_open( [pid 5402] <... bpf resumed>) = 4 [pid 5400] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5398, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5400] exit_group(0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5403 attached [pid 5402] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5403] set_robust_list(0x555556880660, 24) = 0 [pid 5400] <... exit_group resumed>) = ? [pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5403 [pid 5403] <... prctl resumed>) = 0 [pid 5402] <... bpf resumed>) = 5 [pid 5401] <... bpf resumed>) = 5 [pid 5399] +++ exited with 0 +++ [pid 5402] perf_event_open( [pid 5403] setpgid(0, 0 [pid 5402] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5401] perf_event_open( [pid 5403] <... setpgid resumed>) = 0 [pid 5401] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5402] exit_group(0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5401] exit_group(0 [pid 5403] <... openat resumed>) = 3 [pid 5401] <... exit_group resumed>) = ? [pid 5400] +++ exited with 0 +++ [pid 5403] write(3, "1000", 4 [pid 5402] <... exit_group resumed>) = ? [pid 5403] <... write resumed>) = 4 [pid 5403] close(3) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5400, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5403] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5405 attached [pid 5405] set_robust_list(0x555556880660, 24) = 0 [pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5405] setpgid(0, 0./strace-static-x86_64: Process 5404 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5405 [pid 5405] <... setpgid resumed>) = 0 [pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5405] write(3, "1000", 4) = 4 [pid 5404] set_robust_list(0x555556880660, 24 [pid 5403] <... bpf resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5404 [pid 5405] close(3 [pid 5404] <... set_robust_list resumed>) = 0 [pid 5405] <... close resumed>) = 0 [pid 5403] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5404] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5405] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5404] <... prctl resumed>) = 0 [pid 5405] <... bpf resumed>) = 3 [pid 5403] <... bpf resumed>) = 4 [pid 5404] setpgid(0, 0 [pid 5403] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5404] <... setpgid resumed>) = 0 [pid 5404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5405] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5404] <... openat resumed>) = 3 [pid 5402] +++ exited with 0 +++ [pid 5401] +++ exited with 0 +++ [pid 5405] <... bpf resumed>) = 4 [pid 5404] write(3, "1000", 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5401, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5402, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5405] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5404] <... write resumed>) = 4 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5406 attached [pid 5405] <... bpf resumed>) = 5 [pid 5404] close(3 [pid 5403] <... bpf resumed>) = 5 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5406 [pid 5405] perf_event_open( [pid 5404] <... close resumed>) = 0 ./strace-static-x86_64: Process 5407 attached [pid 5406] set_robust_list(0x555556880660, 24 [pid 5403] perf_event_open( [pid 5404] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5405] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5407] set_robust_list(0x555556880660, 24 [pid 5406] <... set_robust_list resumed>) = 0 [pid 5403] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5407] <... set_robust_list resumed>) = 0 [pid 5406] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5404] <... bpf resumed>) = 3 [pid 5403] exit_group(0 [pid 5407] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5406] <... prctl resumed>) = 0 [pid 5407] <... prctl resumed>) = 0 [pid 5406] setpgid(0, 0 [pid 5407] setpgid(0, 0 [pid 5406] <... setpgid resumed>) = 0 [pid 5403] <... exit_group resumed>) = ? [pid 5405] exit_group(0 [pid 5407] <... setpgid resumed>) = 0 [pid 5407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5405] <... exit_group resumed>) = ? [pid 5404] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5407 [pid 5407] <... openat resumed>) = 3 [pid 5406] <... openat resumed>) = 3 [pid 5404] <... bpf resumed>) = 4 [pid 5407] write(3, "1000", 4 [pid 5406] write(3, "1000", 4) = 4 [pid 5407] <... write resumed>) = 4 [pid 5407] close(3) = 0 [pid 5406] close(3) = 0 [pid 5404] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5407] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5406] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5404] <... bpf resumed>) = 5 [pid 5407] <... bpf resumed>) = 3 [pid 5406] <... bpf resumed>) = 3 [pid 5404] perf_event_open( [pid 5403] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5408 attached [pid 5407] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5406] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5404] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5408] set_robust_list(0x555556880660, 24 [pid 5407] <... bpf resumed>) = 4 [pid 5406] <... bpf resumed>) = 4 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5408 [pid 5408] <... set_robust_list resumed>) = 0 [pid 5406] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5404] exit_group(0 [pid 5408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5407] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5404] <... exit_group resumed>) = ? [pid 5408] setpgid(0, 0) = 0 [pid 5408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5405] +++ exited with 0 +++ [pid 5408] <... openat resumed>) = 3 [pid 5406] <... bpf resumed>) = 5 [pid 5408] write(3, "1000", 4 [pid 5407] <... bpf resumed>) = 5 [pid 5408] <... write resumed>) = 4 [pid 5408] close(3 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5408] <... close resumed>) = 0 [pid 5407] perf_event_open( [pid 5406] perf_event_open( [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5408] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5407] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5406] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5408] <... bpf resumed>) = 3 [pid 5406] exit_group(0 [pid 5407] exit_group(0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5406] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5409 attached [pid 5408] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5407] <... exit_group resumed>) = ? [pid 5409] set_robust_list(0x555556880660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5409 [pid 5409] <... set_robust_list resumed>) = 0 [pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5409] setpgid(0, 0 [pid 5408] <... bpf resumed>) = 4 [pid 5404] +++ exited with 0 +++ [pid 5409] <... setpgid resumed>) = 0 [pid 5408] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5408] <... bpf resumed>) = 5 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5404, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5408] perf_event_open( [pid 5409] <... openat resumed>) = 3 [pid 5409] write(3, "1000", 4 [pid 5408] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5407] +++ exited with 0 +++ [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5410 attached [pid 5409] <... write resumed>) = 4 [pid 5408] exit_group(0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5407, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5409] close(3) = 0 [pid 5409] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5410] set_robust_list(0x555556880660, 24 [pid 5409] <... bpf resumed>) = 3 [pid 5408] <... exit_group resumed>) = ? [pid 5406] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5410 [pid 5410] <... set_robust_list resumed>) = 0 [pid 5409] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5411 attached [pid 5410] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5409] <... bpf resumed>) = 4 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5406, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5410] <... prctl resumed>) = 0 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5411] set_robust_list(0x555556880660, 24 [pid 5409] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5411] <... set_robust_list resumed>) = 0 [pid 5410] setpgid(0, 0 [pid 5408] +++ exited with 0 +++ [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5411 [pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5410] <... setpgid resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5408, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5411] <... prctl resumed>) = 0 [pid 5410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5411] setpgid(0, 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5411] <... setpgid resumed>) = 0 [pid 5410] <... openat resumed>) = 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5410] write(3, "1000", 4 [pid 5411] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5413 attached ./strace-static-x86_64: Process 5412 attached [pid 5411] write(3, "1000", 4 [pid 5410] <... write resumed>) = 4 [pid 5412] set_robust_list(0x555556880660, 24 [pid 5411] <... write resumed>) = 4 [pid 5410] close(3 [pid 5413] set_robust_list(0x555556880660, 24 [pid 5412] <... set_robust_list resumed>) = 0 [pid 5411] close(3 [pid 5410] <... close resumed>) = 0 [pid 5413] <... set_robust_list resumed>) = 0 [pid 5411] <... close resumed>) = 0 [pid 5410] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5413 [pid 5413] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5412] <... prctl resumed>) = 0 [pid 5411] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5412 [pid 5413] <... prctl resumed>) = 0 [pid 5412] setpgid(0, 0 [pid 5411] <... bpf resumed>) = 3 [pid 5410] <... bpf resumed>) = 3 [pid 5413] setpgid(0, 0) = 0 [pid 5412] <... setpgid resumed>) = 0 [pid 5411] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5410] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5409] <... bpf resumed>) = 5 [pid 5413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5413] <... openat resumed>) = 3 [pid 5412] <... openat resumed>) = 3 [pid 5411] <... bpf resumed>) = 4 [pid 5410] <... bpf resumed>) = 4 [pid 5409] perf_event_open( [pid 5413] write(3, "1000", 4 [pid 5412] write(3, "1000", 4 [pid 5411] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5412] <... write resumed>) = 4 [pid 5413] <... write resumed>) = 4 [pid 5412] close(3 [pid 5409] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5411] <... bpf resumed>) = 5 [pid 5413] close(3 [pid 5412] <... close resumed>) = 0 [pid 5411] perf_event_open( [pid 5410] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5413] <... close resumed>) = 0 [pid 5412] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5411] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5410] <... bpf resumed>) = 5 [pid 5409] exit_group(0) = ? [pid 5413] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5412] <... bpf resumed>) = 3 [pid 5411] exit_group(0 [pid 5410] perf_event_open( [pid 5413] <... bpf resumed>) = 3 [pid 5413] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5412] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5411] <... exit_group resumed>) = ? [pid 5410] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5409] +++ exited with 0 +++ [pid 5413] <... bpf resumed>) = 4 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5413] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5412] <... bpf resumed>) = 4 [pid 5410] exit_group(0 [pid 5413] <... bpf resumed>) = 5 [pid 5410] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5414 attached [pid 5412] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5414] set_robust_list(0x555556880660, 24 [pid 5412] <... bpf resumed>) = 5 [pid 5414] <... set_robust_list resumed>) = 0 [pid 5412] perf_event_open( [pid 5414] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5412] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5414] <... prctl resumed>) = 0 [pid 5412] exit_group(0 [pid 5414] setpgid(0, 0) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5414 [pid 5414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5412] <... exit_group resumed>) = ? [pid 5413] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5413] exit_group(0 [pid 5411] +++ exited with 0 +++ [pid 5414] write(3, "1000", 4 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5414] <... write resumed>) = 4 [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5414] close(3 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5414] <... close resumed>) = 0 [pid 5414] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5414] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5415 [pid 5413] <... exit_group resumed>) = ? [pid 5414] <... bpf resumed>) = 4 [pid 5414] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5414] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5412] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5412, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5414] exit_group(0./strace-static-x86_64: Process 5415 attached [pid 5413] +++ exited with 0 +++ [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5416 attached [pid 5415] set_robust_list(0x555556880660, 24 [pid 5414] <... exit_group resumed>) = ? [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5413, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5415] <... set_robust_list resumed>) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5416 [pid 5416] set_robust_list(0x555556880660, 24 [pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5416] <... set_robust_list resumed>) = 0 [pid 5415] setpgid(0, 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5415] <... setpgid resumed>) = 0 [pid 5416] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5415] write(3, "1000", 4) = 4 [pid 5415] close(3) = 0 [pid 5415] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5410] +++ exited with 0 +++ [pid 5415] <... bpf resumed>) = 3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5410, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5415] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5417 [pid 5415] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16./strace-static-x86_64: Process 5418 attached ./strace-static-x86_64: Process 5417 attached [pid 5416] <... prctl resumed>) = 0 [pid 5414] +++ exited with 0 +++ [pid 5418] set_robust_list(0x555556880660, 24 [pid 5417] set_robust_list(0x555556880660, 24 [pid 5416] setpgid(0, 0) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5418 [pid 5418] <... set_robust_list resumed>) = 0 [pid 5417] <... set_robust_list resumed>) = 0 [pid 5416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] restart_syscall(<... resuming interrupted clone ...> [pid 5418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5416] <... openat resumed>) = 3 [pid 5073] <... restart_syscall resumed>) = 0 [pid 5418] <... prctl resumed>) = 0 [pid 5417] <... prctl resumed>) = 0 [pid 5416] write(3, "1000", 4) = 4 [pid 5416] close(3 [pid 5417] setpgid(0, 0 [pid 5416] <... close resumed>) = 0 [pid 5418] setpgid(0, 0) = 0 [pid 5417] <... setpgid resumed>) = 0 [pid 5415] <... bpf resumed>) = 5 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5416] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5418] <... openat resumed>) = 3 [pid 5416] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5419 attached [pid 5417] <... openat resumed>) = 3 [pid 5419] set_robust_list(0x555556880660, 24) = 0 [pid 5419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5418] write(3, "1000", 4 [pid 5417] write(3, "1000", 4 [pid 5415] perf_event_open( [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5419 [pid 5419] <... prctl resumed>) = 0 [pid 5418] <... write resumed>) = 4 [pid 5419] setpgid(0, 0) = 0 [pid 5415] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5418] close(3 [pid 5417] <... write resumed>) = 4 [pid 5416] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5419] <... openat resumed>) = 3 [pid 5418] <... close resumed>) = 0 [pid 5417] close(3) = 0 [pid 5419] write(3, "1000", 4) = 4 [pid 5418] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5419] close(3 [pid 5417] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5419] <... close resumed>) = 0 [pid 5415] exit_group(0 [pid 5419] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5419] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5418] <... bpf resumed>) = 3 [pid 5417] <... bpf resumed>) = 3 [pid 5416] <... bpf resumed>) = 4 [pid 5415] <... exit_group resumed>) = ? [pid 5419] <... bpf resumed>) = 4 [pid 5418] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5417] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5416] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5419] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5417] <... bpf resumed>) = 4 [pid 5416] <... bpf resumed>) = 5 [pid 5419] <... bpf resumed>) = 5 [pid 5419] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5419] exit_group(0 [pid 5417] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5419] <... exit_group resumed>) = ? [pid 5418] <... bpf resumed>) = 4 [pid 5417] <... bpf resumed>) = 5 [pid 5416] perf_event_open( [pid 5415] +++ exited with 0 +++ [pid 5418] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5418] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5418] exit_group(0 [pid 5417] perf_event_open( [pid 5416] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5418] <... exit_group resumed>) = ? [pid 5419] +++ exited with 0 +++ [pid 5417] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5416] exit_group(0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5419, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5417] exit_group(0 [pid 5416] <... exit_group resumed>) = ? [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5420 attached [pid 5420] set_robust_list(0x555556880660, 24) = 0 [pid 5420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5420 [pid 5420] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5421 attached [pid 5418] +++ exited with 0 +++ [pid 5417] <... exit_group resumed>) = ? [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5418, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5421] set_robust_list(0x555556880660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5421 [pid 5421] <... set_robust_list resumed>) = 0 [pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5421] setpgid(0, 0 [pid 5420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5421] <... setpgid resumed>) = 0 [pid 5420] <... openat resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5422 ./strace-static-x86_64: Process 5422 attached [pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5420] write(3, "1000", 4 [pid 5417] +++ exited with 0 +++ [pid 5416] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5416, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5422] set_robust_list(0x555556880660, 24 [pid 5420] <... write resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5422] <... set_robust_list resumed>) = 0 [pid 5421] <... openat resumed>) = 3 [pid 5420] close(3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5421] write(3, "1000", 4 [pid 5420] <... close resumed>) = 0 ./strace-static-x86_64: Process 5423 attached [pid 5421] <... write resumed>) = 4 [pid 5420] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5423] set_robust_list(0x555556880660, 24 [pid 5422] <... prctl resumed>) = 0 [pid 5421] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5423 [pid 5423] <... set_robust_list resumed>) = 0 [pid 5422] setpgid(0, 0 [pid 5421] <... close resumed>) = 0 [pid 5423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5421] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5420] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5424 attached [pid 5424] set_robust_list(0x555556880660, 24 [pid 5423] <... prctl resumed>) = 0 [pid 5422] <... setpgid resumed>) = 0 [pid 5420] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5424 [pid 5424] <... set_robust_list resumed>) = 0 [pid 5423] setpgid(0, 0 [pid 5422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5421] <... bpf resumed>) = 3 [pid 5424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5423] <... setpgid resumed>) = 0 [pid 5420] <... bpf resumed>) = 4 [pid 5421] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5424] <... prctl resumed>) = 0 [pid 5423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5422] <... openat resumed>) = 3 [pid 5424] setpgid(0, 0) = 0 [pid 5424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5420] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5424] <... openat resumed>) = 3 [pid 5423] <... openat resumed>) = 3 [pid 5424] write(3, "1000", 4 [pid 5422] write(3, "1000", 4 [pid 5424] <... write resumed>) = 4 [pid 5422] <... write resumed>) = 4 [pid 5423] write(3, "1000", 4 [pid 5424] close(3 [pid 5422] close(3 [pid 5424] <... close resumed>) = 0 [pid 5424] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5423] <... write resumed>) = 4 [pid 5422] <... close resumed>) = 0 [pid 5423] close(3 [pid 5422] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5421] <... bpf resumed>) = 4 [pid 5420] <... bpf resumed>) = 5 [pid 5424] <... bpf resumed>) = 3 [pid 5423] <... close resumed>) = 0 [pid 5420] perf_event_open( [pid 5424] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5422] <... bpf resumed>) = 3 [pid 5423] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5421] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5420] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5424] <... bpf resumed>) = 4 [pid 5424] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5423] <... bpf resumed>) = 3 [pid 5422] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5421] <... bpf resumed>) = 5 [pid 5424] <... bpf resumed>) = 5 [pid 5423] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5424] perf_event_open( [pid 5421] perf_event_open( [pid 5420] exit_group(0 [pid 5424] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5422] <... bpf resumed>) = 4 [pid 5421] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5420] <... exit_group resumed>) = ? [pid 5424] exit_group(0 [pid 5422] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5421] exit_group(0 [pid 5424] <... exit_group resumed>) = ? [pid 5423] <... bpf resumed>) = 4 [pid 5422] <... bpf resumed>) = 5 [pid 5421] <... exit_group resumed>) = ? [pid 5420] +++ exited with 0 +++ [pid 5423] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5423] perf_event_open( [pid 5422] perf_event_open( [pid 5423] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5422] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5423] exit_group(0 [pid 5422] exit_group(0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5420, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5424] +++ exited with 0 +++ [pid 5423] <... exit_group resumed>) = ? [pid 5421] +++ exited with 0 +++ [pid 5422] <... exit_group resumed>) = ? [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5424, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5425 attached [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5425 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5425] set_robust_list(0x555556880660, 24) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5426 ./strace-static-x86_64: Process 5427 attached ./strace-static-x86_64: Process 5426 attached [pid 5425] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5427 [pid 5427] set_robust_list(0x555556880660, 24 [pid 5426] set_robust_list(0x555556880660, 24 [pid 5425] <... prctl resumed>) = 0 [pid 5426] <... set_robust_list resumed>) = 0 [pid 5427] <... set_robust_list resumed>) = 0 [pid 5426] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5425] setpgid(0, 0 [pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5426] <... prctl resumed>) = 0 [pid 5425] <... setpgid resumed>) = 0 [pid 5427] <... prctl resumed>) = 0 [pid 5427] setpgid(0, 0 [pid 5425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5427] <... setpgid resumed>) = 0 [pid 5426] setpgid(0, 0 [pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5425] <... openat resumed>) = 3 [pid 5426] <... setpgid resumed>) = 0 [pid 5427] <... openat resumed>) = 3 [pid 5426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5425] write(3, "1000", 4) = 4 [pid 5425] close(3 [pid 5427] write(3, "1000", 4 [pid 5425] <... close resumed>) = 0 [pid 5427] <... write resumed>) = 4 [pid 5427] close(3) = 0 [pid 5425] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5427] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5426] <... openat resumed>) = 3 [pid 5422] +++ exited with 0 +++ [pid 5427] <... bpf resumed>) = 3 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5422, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5423] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5423, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5427] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5426] write(3, "1000", 4 [pid 5425] <... bpf resumed>) = 3 [pid 5067] <... restart_syscall resumed>) = 0 [pid 5427] <... bpf resumed>) = 4 [pid 5426] <... write resumed>) = 4 [pid 5425] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5426] close(3) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5427] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5425] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5429 attached ./strace-static-x86_64: Process 5428 attached [pid 5427] <... bpf resumed>) = 5 [pid 5426] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5428 [pid 5429] set_robust_list(0x555556880660, 24 [pid 5428] set_robust_list(0x555556880660, 24 [pid 5427] perf_event_open( [pid 5425] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5429] <... set_robust_list resumed>) = 0 [pid 5429] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5428] <... set_robust_list resumed>) = 0 [pid 5428] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5425] <... bpf resumed>) = 5 [pid 5429] <... prctl resumed>) = 0 [pid 5427] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5428] <... prctl resumed>) = 0 [pid 5428] setpgid(0, 0 [pid 5429] setpgid(0, 0 [pid 5428] <... setpgid resumed>) = 0 [pid 5426] <... bpf resumed>) = 3 [pid 5428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5429 [pid 5428] write(3, "1000", 4) = 4 [pid 5429] <... setpgid resumed>) = 0 [pid 5427] exit_group(0 [pid 5426] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5425] perf_event_open( [pid 5429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5428] close(3 [pid 5427] <... exit_group resumed>) = ? [pid 5426] <... bpf resumed>) = 4 [pid 5425] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5429] <... openat resumed>) = 3 [pid 5428] <... close resumed>) = 0 [pid 5429] write(3, "1000", 4) = 4 [pid 5429] close(3) = 0 [pid 5429] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5428] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5426] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5425] exit_group(0 [pid 5429] <... bpf resumed>) = 3 [pid 5425] <... exit_group resumed>) = ? [pid 5429] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5428] <... bpf resumed>) = 3 [pid 5428] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5429] <... bpf resumed>) = 4 [pid 5427] +++ exited with 0 +++ [pid 5429] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5426] <... bpf resumed>) = 5 [pid 5426] perf_event_open( [pid 5429] <... bpf resumed>) = 5 [pid 5428] <... bpf resumed>) = 4 [pid 5425] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5429] perf_event_open( [pid 5428] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5426] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5425, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5070] <... restart_syscall resumed>) = 0 [pid 5429] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5428] <... bpf resumed>) = 5 [pid 5429] exit_group(0 [pid 5428] perf_event_open( [pid 5426] exit_group(0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5430 attached ./strace-static-x86_64: Process 5431 attached [pid 5429] <... exit_group resumed>) = ? [pid 5428] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5426] <... exit_group resumed>) = ? [pid 5431] set_robust_list(0x555556880660, 24 [pid 5430] set_robust_list(0x555556880660, 24 [pid 5428] exit_group(0 [pid 5430] <... set_robust_list resumed>) = 0 [pid 5431] <... set_robust_list resumed>) = 0 [pid 5430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5428] <... exit_group resumed>) = ? [pid 5431] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5430] <... prctl resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5430 [pid 5430] setpgid(0, 0 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5431 [pid 5430] <... setpgid resumed>) = 0 [pid 5430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5431] <... prctl resumed>) = 0 [pid 5431] setpgid(0, 0 [pid 5430] <... openat resumed>) = 3 [pid 5429] +++ exited with 0 +++ [pid 5431] <... setpgid resumed>) = 0 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5429, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5430] write(3, "1000", 4) = 4 [pid 5430] close(3) = 0 [pid 5431] <... openat resumed>) = 3 [pid 5430] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5432 attached [pid 5431] write(3, "1000", 4 [pid 5430] <... bpf resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5432 [pid 5432] set_robust_list(0x555556880660, 24) = 0 [pid 5431] <... write resumed>) = 4 [pid 5432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5432] setpgid(0, 0) = 0 [pid 5432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5431] close(3 [pid 5432] <... openat resumed>) = 3 [pid 5431] <... close resumed>) = 0 [pid 5430] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5432] write(3, "1000", 4 [pid 5430] <... bpf resumed>) = 4 [pid 5432] <... write resumed>) = 4 [pid 5432] close(3) = 0 [pid 5432] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5431] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5430] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5432] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5431] <... bpf resumed>) = 3 [pid 5430] <... bpf resumed>) = 5 [pid 5426] +++ exited with 0 +++ [pid 5431] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5430] perf_event_open( [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5426, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5432] <... bpf resumed>) = 4 [pid 5432] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5430] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5431] <... bpf resumed>) = 4 [pid 5431] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5433 attached [pid 5430] exit_group(0 [pid 5074] <... clone resumed>, child_tidptr=0x555556880650) = 5433 [pid 5430] <... exit_group resumed>) = ? [pid 5433] set_robust_list(0x555556880660, 24 [pid 5432] <... bpf resumed>) = 5 [pid 5431] <... bpf resumed>) = 5 [pid 5428] +++ exited with 0 +++ [pid 5431] perf_event_open( [pid 5433] <... set_robust_list resumed>) = 0 [pid 5431] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5433] setpgid(0, 0) = 0 [pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5431] exit_group(0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5433] <... openat resumed>) = 3 [pid 5433] write(3, "1000", 4 [pid 5432] perf_event_open( [pid 5431] <... exit_group resumed>) = ? [pid 5430] +++ exited with 0 +++ [pid 5433] <... write resumed>) = 4 [pid 5432] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5430, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5435 attached [pid 5435] set_robust_list(0x555556880660, 24) = 0 [pid 5435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5433] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556880650) = 5434 [pid 5435] setpgid(0, 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556880650) = 5435 [pid 5435] <... setpgid resumed>) = 0 [pid 5435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5432] exit_group(0 [pid 5433] <... close resumed>) = 0 [pid 5435] write(3, "1000", 4./strace-static-x86_64: Process 5434 attached [pid 5433] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5432] <... exit_group resumed>) = ? [pid 5434] set_robust_list(0x555556880660, 24 [pid 5435] <... write resumed>) = 4 [pid 5434] <... set_robust_list resumed>) = 0 [pid 5435] close(3) = 0 [pid 5435] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5435] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5434] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5433] <... bpf resumed>) = 3 [pid 5432] +++ exited with 0 +++ [pid 5431] +++ exited with 0 +++ [pid 5434] <... prctl resumed>) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5431, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5434] setpgid(0, 0) = 0 [pid 5434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5434] write(3, "1000", 4 [pid 5435] <... bpf resumed>) = 4 [pid 5433] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5434] <... write resumed>) = 4 [pid 5433] <... bpf resumed>) = 4 [pid 5434] close(3) = 0 [pid 5434] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72./strace-static-x86_64: Process 5436 attached [pid 5435] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5433] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... clone resumed>, child_tidptr=0x555556880650) = 5436 [pid 5436] set_robust_list(0x555556880660, 24 [pid 5434] <... bpf resumed>) = 3 [pid 5435] <... bpf resumed>) = 5 [pid 5433] <... bpf resumed>) = 5 [pid 5436] <... set_robust_list resumed>) = 0 [pid 5435] perf_event_open( [pid 5436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5434] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144 [pid 5435] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 ./strace-static-x86_64: Process 5437 attached [pid 5436] setpgid(0, 0 [pid 5433] perf_event_open( [pid 5437] set_robust_list(0x555556880660, 24 [pid 5436] <... setpgid resumed>) = 0 [pid 5434] <... bpf resumed>) = 4 [pid 5433] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5073] <... clone resumed>, child_tidptr=0x555556880650) = 5437 [pid 5436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5437] <... set_robust_list resumed>) = 0 [pid 5437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5436] <... openat resumed>) = 3 [pid 5434] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16 [pid 5435] exit_group(0 [pid 5433] exit_group(0 [pid 5437] <... prctl resumed>) = 0 [pid 5434] <... bpf resumed>) = 5 [pid 5437] setpgid(0, 0 [pid 5436] write(3, "1000", 4 [pid 5435] <... exit_group resumed>) = ? [pid 5433] <... exit_group resumed>) = ? [pid 5437] <... setpgid resumed>) = 0 [pid 5436] <... write resumed>) = 4 [pid 5434] perf_event_open( [pid 5436] close(3 [pid 5437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5436] <... close resumed>) = 0 [pid 5436] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=262144, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72 [pid 5434] <... perf_event_open resumed>{type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5437] <... openat resumed>) = 3 [pid 5436] <... bpf resumed>) = 3 [pid 5434] exit_group(0 [pid 5436] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=15, insns=0x20000c80, license="syzkaller", 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=-1, 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}, 144) = 4 [pid 5436] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_end", prog_fd=4}}, 16) = 5 [pid 5436] perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CPU_CLOCK, sample_period=511, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, ...}, 0, -1, -1, 0) = 6 [pid 5437] write(3, "1000", 4 [pid 5436] exit_group(0 [pid 5434] <... exit_group resumed>) = ? [pid 5435] +++ exited with 0 +++ [pid 5437] <... write resumed>) = 4 [pid 5433] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5435, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5436] <... exit_group resumed>) = ?