./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3790188131 <...> Warning: Permanently added '10.128.1.13' (ED25519) to the list of known hosts. execve("./syz-executor3790188131", ["./syz-executor3790188131"], 0x7ffc6a696c60 /* 10 vars */) = 0 brk(NULL) = 0x55555911b000 brk(0x55555911bd00) = 0x55555911bd00 arch_prctl(ARCH_SET_FS, 0x55555911b380) = 0 set_tid_address(0x55555911b650) = 5054 set_robust_list(0x55555911b660, 24) = 0 rseq(0x55555911bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3790188131", 4096) = 28 getrandom("\x2a\x13\x1f\x8f\x08\x55\xde\x83", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555911bd00 brk(0x55555913cd00) = 0x55555913cd00 brk(0x55555913d000) = 0x55555913d000 mprotect(0x7f3ccebda000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5055 attached , child_tidptr=0x55555911b650) = 5055 [pid 5055] set_robust_list(0x55555911b660, 24) = 0 [pid 5055] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5055] setsid() = 1 [pid 5055] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5055] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5055] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5055] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5055] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5055] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5055] unshare(CLONE_NEWNS) = 0 [pid 5055] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5055] unshare(CLONE_NEWIPC) = 0 [pid 5055] unshare(CLONE_NEWCGROUP) = 0 [pid 5055] unshare(CLONE_NEWUTS) = 0 [pid 5055] unshare(CLONE_SYSVSEM) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "16777216", 8) = 8 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "536870912", 9) = 9 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "1024", 4) = 4 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "8192", 4) = 4 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "1024", 4) = 4 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "1024", 4) = 4 [pid 5055] close(3) = 0 [pid 5055] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5055] close(3) = 0 [pid 5055] getpid() = 1 [pid 5055] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5081] set_robust_list(0x55555911b660, 24 [pid 5055] <... clone resumed>, child_tidptr=0x55555911b650) = 2 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 5081] write(3, "1000", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] write(1, "executing program\n", 18) = 18 [pid 5081] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_LWT_XMIT, insn_cnt=14, insns=0x20001280, license="syzkaller", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3 [ 162.839193][ T5081] ===================================================== [ 162.846534][ T5081] BUG: KMSAN: uninit-value in eth_type_trans+0x614/0x940 [ 162.853876][ T5081] eth_type_trans+0x614/0x940 [ 162.858729][ T5081] __dev_forward_skb2+0x3cc/0x900 [ 162.864026][ T5081] dev_forward_skb_nomtu+0x3c/0xe0 [ 162.869336][ T5081] __bpf_redirect+0x133d/0x1620 [ 162.874476][ T5081] bpf_clone_redirect+0x328/0x470 [ 162.879653][ T5081] ___bpf_prog_run+0x13fe/0xe0f0 [ 162.884814][ T5081] __bpf_prog_run512+0xb5/0xe0 [ 162.889744][ T5081] bpf_test_run+0x499/0xc30 [ 162.894479][ T5081] bpf_prog_test_run_skb+0x14ea/0x1f20 [ 162.900147][ T5081] bpf_prog_test_run+0x6b7/0xad0 [ 162.905374][ T5081] __sys_bpf+0x6aa/0xd90 [ 162.909785][ T5081] __x64_sys_bpf+0xa0/0xe0 [ 162.914537][ T5081] x64_sys_call+0x96b/0x3b50 [ 162.919331][ T5081] do_syscall_64+0xcf/0x1e0 [ 162.924221][ T5081] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.930388][ T5081] [ 162.932748][ T5081] Uninit was created at: [ 162.937271][ T5081] kmem_cache_alloc_node+0x622/0xc90 [ 162.943150][ T5081] kmalloc_reserve+0x13d/0x4a0 [ 162.948325][ T5081] pskb_expand_head+0x222/0x19d0 [ 162.953595][ T5081] skb_ensure_writable+0x412/0x4a0 [ 162.958886][ T5081] bpf_clone_redirect+0x17f/0x470 [ 162.964235][ T5081] ___bpf_prog_run+0x13fe/0xe0f0 [ 162.969356][ T5081] __bpf_prog_run512+0xb5/0xe0 [ 162.974414][ T5081] bpf_test_run+0x499/0xc30 [ 162.979112][ T5081] bpf_prog_test_run_skb+0x14ea/0x1f20 [ 162.984954][ T5081] bpf_prog_test_run+0x6b7/0xad0 [ 162.990060][ T5081] __sys_bpf+0x6aa/0xd90 [ 162.994516][ T5081] __x64_sys_bpf+0xa0/0xe0 [ 162.999098][ T5081] x64_sys_call+0x96b/0x3b50 [ 163.003955][ T5081] do_syscall_64+0xcf/0x1e0 [ 163.008658][ T5081] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 163.014848][ T5081] [ 163.017267][ T5081] CPU: 1 PID: 5081 Comm: syz-executor379 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 163.027602][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 163.037838][ T5081] ===================================================== [ 163.044935][ T5081] Disabling lock debugging due to kernel taint [ 163.051235][ T5081] Kernel panic - not syncing: kmsan.panic set ... [ 163.057811][ T5081] CPU: 1 PID: 5081 Comm: syz-executor379 Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 163.069639][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 163.079804][ T5081] Call Trace: [ 163.083177][ T5081] [ 163.086214][ T5081] dump_stack_lvl+0x216/0x2d0 [ 163.091280][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.097372][ T5081] dump_stack+0x1e/0x30 [ 163.101714][ T5081] panic+0x4e2/0xcd0 [ 163.105776][ T5081] ? kmsan_get_metadata+0xf1/0x1d0 [ 163.111026][ T5081] kmsan_report+0x2d5/0x2e0 [ 163.115711][ T5081] ? skb_ensure_writable+0x412/0x4a0 [ 163.121189][ T5081] ? __bpf_prog_run512+0xb5/0xe0 [ 163.126310][ T5081] ? bpf_test_run+0x499/0xc30 [ 163.131305][ T5081] ? bpf_prog_test_run_skb+0x14ea/0x1f20 [ 163.137157][ T5081] ? bpf_prog_test_run+0x6b7/0xad0 [ 163.142405][ T5081] ? __sys_bpf+0x6aa/0xd90 [ 163.147176][ T5081] ? __x64_sys_bpf+0xa0/0xe0 [ 163.151936][ T5081] ? __msan_warning+0x95/0x120 [ 163.156892][ T5081] ? eth_type_trans+0x614/0x940 [ 163.161930][ T5081] ? __dev_forward_skb2+0x3cc/0x900 [ 163.167287][ T5081] ? dev_forward_skb_nomtu+0x3c/0xe0 [ 163.172693][ T5081] ? __bpf_redirect+0x133d/0x1620 [ 163.177892][ T5081] ? bpf_clone_redirect+0x328/0x470 [ 163.183265][ T5081] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 163.188507][ T5081] ? __bpf_prog_run512+0xb5/0xe0 [ 163.193640][ T5081] ? bpf_test_run+0x499/0xc30 [ 163.198470][ T5081] ? bpf_prog_test_run_skb+0x14ea/0x1f20 [ 163.204248][ T5081] ? bpf_prog_test_run+0x6b7/0xad0 [ 163.209554][ T5081] ? __sys_bpf+0x6aa/0xd90 [ 163.214095][ T5081] ? __x64_sys_bpf+0xa0/0xe0 [ 163.218852][ T5081] ? x64_sys_call+0x96b/0x3b50 [ 163.223821][ T5081] ? do_syscall_64+0xcf/0x1e0 [ 163.228797][ T5081] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 163.235039][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.241043][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.246422][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.252412][ T5081] ? eth_type_trans+0x41/0x940 [ 163.257356][ T5081] ? filter_irq_stacks+0x60/0x1a0 [ 163.262608][ T5081] ? stack_depot_save_flags+0x2c/0x6e0 [ 163.268230][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.273610][ T5081] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 163.280083][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.285436][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.291375][ T5081] __msan_warning+0x95/0x120 [ 163.296086][ T5081] eth_type_trans+0x614/0x940 [ 163.300869][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.306810][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.312172][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.318115][ T5081] __dev_forward_skb2+0x3cc/0x900 [ 163.323295][ T5081] dev_forward_skb_nomtu+0x3c/0xe0 [ 163.328533][ T5081] __bpf_redirect+0x133d/0x1620 [ 163.333571][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.339560][ T5081] bpf_clone_redirect+0x328/0x470 [ 163.344770][ T5081] ___bpf_prog_run+0x13fe/0xe0f0 [ 163.349816][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.355163][ T5081] __bpf_prog_run512+0xb5/0xe0 [ 163.360142][ T5081] ? __netlink_policy_dump_write_attr+0xde0/0x1770 [ 163.366838][ T5081] ? bpf_prog_test_run+0x6b7/0xad0 [ 163.372110][ T5081] ? __sys_bpf+0x6aa/0xd90 [ 163.376624][ T5081] ? __x64_sys_bpf+0xa0/0xe0 [ 163.381327][ T5081] ? x64_sys_call+0x96b/0x3b50 [ 163.386295][ T5081] ? do_syscall_64+0xcf/0x1e0 [ 163.391192][ T5081] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 163.397485][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.402875][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.408927][ T5081] ? filter_irq_stacks+0x164/0x1a0 [ 163.414246][ T5081] ? stack_depot_save_flags+0x2c/0x6e0 [ 163.419832][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.425203][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.430527][ T5081] ? kmsan_get_metadata+0x146/0x1d0 [ 163.435907][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.441931][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.447903][ T5081] ? __pfx___bpf_prog_run512+0x10/0x10 [ 163.453543][ T5081] bpf_test_run+0x499/0xc30 [ 163.458260][ T5081] ? bpf_test_run+0x388/0xc30 [ 163.463163][ T5081] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 163.469174][ T5081] bpf_prog_test_run_skb+0x14ea/0x1f20 [ 163.474939][ T5081] ? __pfx_bpf_prog_test_run_skb+0x10/0x10 [ 163.480906][ T5081] bpf_prog_test_run+0x6b7/0xad0 [ 163.486041][ T5081] __sys_bpf+0x6aa/0xd90 [ 163.490408][ T5081] __x64_sys_bpf+0xa0/0xe0 [ 163.494924][ T5081] x64_sys_call+0x96b/0x3b50 [ 163.499635][ T5081] do_syscall_64+0xcf/0x1e0 [ 163.504281][ T5081] ? clear_bhb_loop+0x25/0x80 [ 163.509174][ T5081] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 163.515233][ T5081] RIP: 0033:0x7f3cceb61c29 [ 163.519790][ T5081] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 [ 163.539541][ T5081] RSP: 002b:00007ffd51db6418 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 163.548138][ T5081] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3cceb61c29 [ 163.556265][ T5081] RDX: 0000000000000023 RSI: 0000000020000240 RDI: 000000000000000a [ 163.564379][ T5081] RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 [ 163.572470][ T5081] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 163.580538][ T5081] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 163.588663][ T5081] [ 163.591929][ T5081] Kernel Offset: disabled [ 163.596316][ T5081] Rebooting in 86400 seconds..