./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1748665759 <...> Warning: Permanently added '10.128.1.239' (ED25519) to the list of known hosts. execve("./syz-executor1748665759", ["./syz-executor1748665759"], 0x7fffe25e9180 /* 10 vars */) = 0 brk(NULL) = 0x555567c5c000 brk(0x555567c5cd00) = 0x555567c5cd00 arch_prctl(ARCH_SET_FS, 0x555567c5c380) = 0 set_tid_address(0x555567c5c650) = 5050 set_robust_list(0x555567c5c660, 24) = 0 rseq(0x555567c5cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1748665759", 4096) = 28 getrandom("\xb1\x80\xfd\x86\xb9\x51\x65\xd1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567c5cd00 brk(0x555567c7dd00) = 0x555567c7dd00 brk(0x555567c7e000) = 0x555567c7e000 mprotect(0x7f518766a000, 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, child_tidptr=0x555567c5c650) = 5051 ./strace-static-x86_64: Process 5051 attached [pid 5051] set_robust_list(0x555567c5c660, 24) = 0 [pid 5051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] setpgid(0, 0) = 0 [pid 5051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5051] write(3, "1000", 4) = 4 [pid 5051] close(3) = 0 [pid 5051] write(1, "executing program\n", 18executing program ) = 18 [pid 5051] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=8, max_entries=1, map_flags=BPF_F_RDONLY_PROG, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5051] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_XDP, insn_cnt=16, insns=0x20000000, license="syzkaller", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 144) = 4 [ 182.916269][ T5051] ===================================================== [ 182.923614][ T5051] BUG: KMSAN: uninit-value in __bpf_strtoull+0x245/0x5b0 [ 182.931046][ T5051] __bpf_strtoull+0x245/0x5b0 [ 182.936112][ T5051] bpf_strtol+0x7c/0x270 [ 182.940571][ T5051] ___bpf_prog_run+0x13fe/0xe0f0 [ 182.945952][ T5051] __bpf_prog_run96+0xb5/0xe0 [ 182.950882][ T5051] bpf_test_run_xdp_live+0x10a9/0x2f70 [ 182.956804][ T5051] bpf_prog_test_run_xdp+0xf02/0x1a40 [ 182.962458][ T5051] bpf_prog_test_run+0x6b7/0xad0 [ 182.967675][ T5051] __sys_bpf+0x6aa/0xd90 [ 182.972185][ T5051] __x64_sys_bpf+0xa0/0xe0 [ 182.977034][ T5051] x64_sys_call+0x96b/0x3b50 [ 182.981889][ T5051] do_syscall_64+0xcf/0x1e0 [ 182.986870][ T5051] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.993137][ T5051] [ 182.995585][ T5051] Local variable stack created at: [ 183.000966][ T5051] __bpf_prog_run96+0x45/0xe0 [ 183.006216][ T5051] bpf_test_run_xdp_live+0x10a9/0x2f70 [ 183.011964][ T5051] [ 183.014532][ T5051] CPU: 0 PID: 5051 Comm: syz-executor174 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 183.024941][ T5051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 183.035233][ T5051] ===================================================== [ 183.042442][ T5051] Disabling lock debugging due to kernel taint [ 183.048842][ T5051] Kernel panic - not syncing: kmsan.panic set ... [ 183.055743][ T5051] CPU: 0 PID: 5051 Comm: syz-executor174 Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 183.067658][ T5051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 183.078000][ T5051] Call Trace: [ 183.081435][ T5051] [ 183.084454][ T5051] dump_stack_lvl+0x216/0x2d0 [ 183.089309][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.095310][ T5051] dump_stack+0x1e/0x30 [ 183.099708][ T5051] panic+0x4e2/0xcd0 [ 183.103830][ T5051] ? kmsan_get_metadata+0xf1/0x1d0 [ 183.109297][ T5051] kmsan_report+0x2d5/0x2e0 [ 183.114063][ T5051] ? __msan_warning+0x95/0x120 [ 183.119227][ T5051] ? __bpf_strtoull+0x245/0x5b0 [ 183.124282][ T5051] ? bpf_strtol+0x7c/0x270 [ 183.128919][ T5051] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 183.134373][ T5051] ? __bpf_prog_run96+0xb5/0xe0 [ 183.139530][ T5051] ? bpf_test_run_xdp_live+0x10a9/0x2f70 [ 183.145417][ T5051] ? bpf_prog_test_run_xdp+0xf02/0x1a40 [ 183.151472][ T5051] ? bpf_prog_test_run+0x6b7/0xad0 [ 183.156871][ T5051] ? __sys_bpf+0x6aa/0xd90 [ 183.161556][ T5051] ? __x64_sys_bpf+0xa0/0xe0 [ 183.166390][ T5051] ? x64_sys_call+0x96b/0x3b50 [ 183.171510][ T5051] ? do_syscall_64+0xcf/0x1e0 [ 183.176483][ T5051] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 183.182912][ T5051] ? stack_depot_save+0x12/0x20 [ 183.188253][ T5051] ? kmsan_internal_chain_origin+0xb0/0xd0 [ 183.194269][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.199724][ T5051] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 183.206280][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.211818][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.217862][ T5051] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 183.223860][ T5051] ? stack_depot_save_flags+0x66d/0x6e0 [ 183.229864][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.235275][ T5051] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 183.241751][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.247207][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.253456][ T5051] __msan_warning+0x95/0x120 [ 183.258466][ T5051] __bpf_strtoull+0x245/0x5b0 [ 183.263441][ T5051] ? bpf_strtol+0x5c/0x270 [ 183.268236][ T5051] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 183.273560][ T5051] bpf_strtol+0x7c/0x270 [ 183.278105][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.284119][ T5051] ___bpf_prog_run+0x13fe/0xe0f0 [ 183.289328][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.294804][ T5051] __bpf_prog_run96+0xb5/0xe0 [ 183.300114][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.306105][ T5051] ? __pfx___bpf_prog_run96+0x10/0x10 [ 183.311739][ T5051] bpf_test_run_xdp_live+0x10a9/0x2f70 [ 183.317525][ T5051] ? __pfx_xdp_test_run_init_page+0x10/0x10 [ 183.323651][ T5051] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 183.329997][ T5051] ? bpf_test_run_xdp_live+0x7ed/0x2f70 [ 183.335749][ T5051] ? _copy_from_user+0x10c/0x160 [ 183.340983][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.346422][ T5051] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 183.352467][ T5051] bpf_prog_test_run_xdp+0xf02/0x1a40 [ 183.358125][ T5051] ? kmsan_get_metadata+0x146/0x1d0 [ 183.363894][ T5051] ? __pfx_bpf_prog_test_run_xdp+0x10/0x10 [ 183.369991][ T5051] bpf_prog_test_run+0x6b7/0xad0 [ 183.375179][ T5051] __sys_bpf+0x6aa/0xd90 [ 183.379796][ T5051] __x64_sys_bpf+0xa0/0xe0 [ 183.384400][ T5051] x64_sys_call+0x96b/0x3b50 [ 183.389268][ T5051] do_syscall_64+0xcf/0x1e0 [ 183.394136][ T5051] ? clear_bhb_loop+0x25/0x80 [ 183.399177][ T5051] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 183.405339][ T5051] RIP: 0033:0x7f51875f6c79 [ 183.409902][ T5051] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 183.429961][ T5051] RSP: 002b:00007fffe2061eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 183.438675][ T5051] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f51875f6c79 [ 183.446937][ T5051] RDX: 0000000000000050 RSI: 0000000020000640 RDI: 000000000000000a [ 183.455255][ T5051] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006 [ 183.463341][ T5051] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 183.471466][ T5051] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 183.479747][ T5051] [ 183.483029][ T5051] Kernel Offset: disabled [ 183.487445][ T5051] Rebooting in 86400 seconds..