./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3154328570 <...> Warning: Permanently added '10.128.0.222' (ED25519) to the list of known hosts. execve("./syz-executor3154328570", ["./syz-executor3154328570"], 0x7ffc14b7fdc0 /* 10 vars */) = 0 brk(NULL) = 0x5555562fd000 brk(0x5555562fdd00) = 0x5555562fdd00 arch_prctl(ARCH_SET_FS, 0x5555562fd380) = 0 set_tid_address(0x5555562fd650) = 5009 set_robust_list(0x5555562fd660, 24) = 0 rseq(0x5555562fdca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3154328570", 4096) = 28 getrandom("\x44\x24\x0c\x32\x08\xa7\x83\x53", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555562fdd00 brk(0x55555631ed00) = 0x55555631ed00 brk(0x55555631f000) = 0x55555631f000 mprotect(0x7ff59ff09000, 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 5010 attached , child_tidptr=0x5555562fd650) = 5010 [pid 5010] set_robust_list(0x5555562fd660, 24) = 0 [pid 5010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5010] setpgid(0, 0) = 0 [pid 5010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5010] write(3, "1000", 4) = 4 [pid 5010] close(3) = 0 [pid 5010] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_ACT, insn_cnt=14, insns=0x20000380, license="GPL"}, 20) = 3 [ 166.701278][ T5010] ===================================================== [ 166.708521][ T5010] BUG: KMSAN: uninit-value in ___bpf_prog_run+0xa766/0xdb80 [ 166.716066][ T5010] ___bpf_prog_run+0xa766/0xdb80 [ 166.721265][ T5010] __bpf_prog_run512+0xb5/0xe0 [ 166.726223][ T5010] bpf_test_run+0x482/0xb00 [ 166.730871][ T5010] bpf_prog_test_run_skb+0x14e5/0x1f20 [ 166.736599][ T5010] bpf_prog_test_run+0x6af/0xac0 [ 166.741784][ T5010] __sys_bpf+0x649/0xd60 [ 166.746167][ T5010] __x64_sys_bpf+0xa0/0xe0 [ 166.750744][ T5010] do_syscall_64+0x6d/0x140 [ 166.755516][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 166.761684][ T5010] [ 166.764063][ T5010] Uninit was stored to memory at: [ 166.769239][ T5010] ___bpf_prog_run+0x8567/0xdb80 [ 166.774431][ T5010] __bpf_prog_run512+0xb5/0xe0 [ 166.779368][ T5010] bpf_test_run+0x482/0xb00 [ 166.784089][ T5010] bpf_prog_test_run_skb+0x14e5/0x1f20 [ 166.789718][ T5010] bpf_prog_test_run+0x6af/0xac0 [ 166.794885][ T5010] __sys_bpf+0x649/0xd60 [ 166.799328][ T5010] __x64_sys_bpf+0xa0/0xe0 [ 166.804087][ T5010] do_syscall_64+0x6d/0x140 [ 166.808788][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 166.815002][ T5010] [ 166.817431][ T5010] Local variable stack created at: [ 166.822727][ T5010] __bpf_prog_run512+0x45/0xe0 [ 166.827688][ T5010] bpf_test_run+0x482/0xb00 [ 166.832535][ T5010] [ 166.834964][ T5010] CPU: 0 PID: 5010 Comm: syz-executor315 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 [ 166.845377][ T5010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 166.855638][ T5010] ===================================================== [ 166.862727][ T5010] Disabling lock debugging due to kernel taint [ 166.869008][ T5010] Kernel panic - not syncing: kmsan.panic set ... [ 166.875530][ T5010] CPU: 0 PID: 5010 Comm: syz-executor315 Tainted: G B 6.7.0-syzkaller-00562-g9f8413c4a66f #0 [ 166.887232][ T5010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 166.897409][ T5010] Call Trace: [ 166.900796][ T5010] [ 166.903827][ T5010] dump_stack_lvl+0x1bf/0x240 [ 166.908751][ T5010] dump_stack+0x1e/0x20 [ 166.913128][ T5010] panic+0x4de/0xc90 [ 166.917229][ T5010] ? add_taint+0x108/0x1a0 [ 166.921811][ T5010] kmsan_report+0x2d0/0x2d0 [ 166.926469][ T5010] ? kmsan_internal_chain_origin+0xba/0xd0 [ 166.932458][ T5010] ? __msan_warning+0x96/0x110 [ 166.937443][ T5010] ? ___bpf_prog_run+0xa766/0xdb80 [ 166.942740][ T5010] ? __bpf_prog_run512+0xb5/0xe0 [ 166.947865][ T5010] ? bpf_test_run+0x482/0xb00 [ 166.952727][ T5010] ? bpf_prog_test_run_skb+0x14e5/0x1f20 [ 166.958618][ T5010] ? bpf_prog_test_run+0x6af/0xac0 [ 166.963951][ T5010] ? __sys_bpf+0x649/0xd60 [ 166.968579][ T5010] ? __x64_sys_bpf+0xa0/0xe0 [ 166.973456][ T5010] ? do_syscall_64+0x6d/0x140 [ 166.978534][ T5010] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 166.984854][ T5010] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 166.991172][ T5010] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 166.997642][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 167.003806][ T5010] ? rmqueue_pcplist+0x398/0x530 [ 167.008933][ T5010] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 167.015348][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 167.021377][ T5010] __msan_warning+0x96/0x110 [ 167.026156][ T5010] ___bpf_prog_run+0xa766/0xdb80 [ 167.031333][ T5010] __bpf_prog_run512+0xb5/0xe0 [ 167.036307][ T5010] ? __alloc_pages+0x9a4/0xe00 [ 167.041332][ T5010] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 167.047818][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 167.053849][ T5010] ? ktime_get+0x37d/0x460 [ 167.058387][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 167.064455][ T5010] ? __bpf_prog_run480+0xe0/0xe0 [ 167.069576][ T5010] bpf_test_run+0x482/0xb00 [ 167.074200][ T5010] ? bpf_test_run+0x381/0xb00 [ 167.079516][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 167.085547][ T5010] bpf_prog_test_run_skb+0x14e5/0x1f20 [ 167.091299][ T5010] ? __bpf_prog_test_run_raw_tp+0x2c0/0x2c0 [ 167.097372][ T5010] bpf_prog_test_run+0x6af/0xac0 [ 167.102456][ T5010] __sys_bpf+0x649/0xd60 [ 167.106844][ T5010] __x64_sys_bpf+0xa0/0xe0 [ 167.111409][ T5010] do_syscall_64+0x6d/0x140 [ 167.116113][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 167.122194][ T5010] RIP: 0033:0x7ff59fe95c39 [ 167.126766][ T5010] 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 [ 167.146596][ T5010] RSP: 002b:00007ffdb8d44588 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 167.155209][ T5010] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff59fe95c39 [ 167.163328][ T5010] RDX: 0000000000000023 RSI: 0000000020000240 RDI: 000000000000000a [ 167.171408][ T5010] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006 [ 167.179594][ T5010] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 167.187674][ T5010] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 167.195785][ T5010] [ 167.199294][ T5010] Kernel Offset: disabled [ 167.203753][ T5010] Rebooting in 86400 seconds..