./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3787030186 <...> DUID 00:04:72:40:db:4f:40:9f:ee:ae:6f:49:06:52:cc:1b:f9:b4 forked to background, child pid 5435 [ 127.858033][ T5436] 8021q: adding VLAN 0 to HW filter on device bond0 [ 127.899475][ T5436] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.15.194' (ED25519) to the list of known hosts. execve("./syz-executor3787030186", ["./syz-executor3787030186"], 0x7ffe1a11ee40 /* 10 vars */) = 0 brk(NULL) = 0x555556a81000 brk(0x555556a81d00) = 0x555556a81d00 arch_prctl(ARCH_SET_FS, 0x555556a81380) = 0 set_tid_address(0x555556a81650) = 5783 set_robust_list(0x555556a81660, 24) = 0 rseq(0x555556a81ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3787030186", 4096) = 28 getrandom("\xf6\x5a\xd5\x52\x05\x2d\x0c\xf3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556a81d00 brk(0x555556aa2d00) = 0x555556aa2d00 brk(0x555556aa3000) = 0x555556aa3000 mprotect(0x7fdb9f45b000, 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, child_tidptr=0x555556a81650) = 5784 ./strace-static-x86_64: Process 5784 attached [pid 5784] set_robust_list(0x555556a81660, 24) = 0 [pid 5784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5784] getppid() = 0 [pid 5784] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5784] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5784] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5784] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5784] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5784] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5784] unshare(CLONE_NEWNS) = 0 [pid 5784] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5784] unshare(CLONE_NEWIPC) = 0 [pid 5784] unshare(CLONE_NEWCGROUP) = 0 [pid 5784] unshare(CLONE_NEWUTS) = 0 [pid 5784] unshare(CLONE_SYSVSEM) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "16777216", 8) = 8 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "536870912", 9) = 9 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1024", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "8192", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1024", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1024", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5784] close(3) = 0 [pid 5784] getpid() = 1 [pid 5784] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5810] set_robust_list(0x555556a81660, 24) = 0 [pid 5784] <... clone resumed>, child_tidptr=0x555556a81650) = 2 [pid 5810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5810] setpgid(0, 0) = 0 [pid 5810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5810] write(3, "1000", 4) = 4 [pid 5810] close(3executing program ) = 0 [pid 5810] write(1, "executing program\n", 18) = 18 [pid 5810] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_LWT_XMIT, insn_cnt=14, insns=0x20000800, license="syzkaller", log_level=0, log_size=0, log_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 [ 191.215871][ T5810] ===================================================== [ 191.223168][ T5810] BUG: KMSAN: uninit-value in eth_type_trans+0x632/0x990 [ 191.230364][ T5810] eth_type_trans+0x632/0x990 [ 191.235437][ T5810] __dev_forward_skb2+0x3cc/0x900 [ 191.240705][ T5810] dev_forward_skb_nomtu+0x3c/0xe0 [ 191.246144][ T5810] __bpf_redirect+0x13a6/0x1690 [ 191.251147][ T5810] bpf_clone_redirect+0x37e/0x500 [ 191.256467][ T5810] ___bpf_prog_run+0x13fe/0xe0f0 [ 191.261583][ T5810] __bpf_prog_run512+0xc5/0xf0 [ 191.266613][ T5810] bpf_test_run+0x546/0xd20 [ 191.271282][ T5810] bpf_prog_test_run_skb+0x18c4/0x2570 [ 191.276998][ T5810] bpf_prog_test_run+0x5e5/0xa30 [ 191.282109][ T5810] __sys_bpf+0x6aa/0xd90 [ 191.286653][ T5810] __x64_sys_bpf+0xa0/0xe0 [ 191.291224][ T5810] x64_sys_call+0x329c/0x3c30 [ 191.296186][ T5810] do_syscall_64+0xcd/0x1e0 [ 191.300890][ T5810] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 191.307113][ T5810] [ 191.309512][ T5810] Uninit was created at: [ 191.314081][ T5810] kmem_cache_alloc_node_noprof+0x907/0xe00 [ 191.320185][ T5810] kmalloc_reserve+0x13d/0x4a0 [ 191.325239][ T5810] pskb_expand_head+0x226/0x1a60 [ 191.330385][ T5810] skb_ensure_writable+0x496/0x520 [ 191.335788][ T5810] bpf_clone_redirect+0x1c5/0x500 [ 191.340966][ T5810] ___bpf_prog_run+0x13fe/0xe0f0 [ 191.346139][ T5810] __bpf_prog_run512+0xc5/0xf0 [ 191.351073][ T5810] bpf_test_run+0x546/0xd20 [ 191.355788][ T5810] bpf_prog_test_run_skb+0x18c4/0x2570 [ 191.361421][ T5810] bpf_prog_test_run+0x5e5/0xa30 [ 191.366592][ T5810] __sys_bpf+0x6aa/0xd90 [ 191.371017][ T5810] __x64_sys_bpf+0xa0/0xe0 [ 191.375750][ T5810] x64_sys_call+0x329c/0x3c30 [ 191.380622][ T5810] do_syscall_64+0xcd/0x1e0 [ 191.385367][ T5810] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 191.391452][ T5810] [ 191.394041][ T5810] CPU: 0 UID: 0 PID: 5810 Comm: syz-executor378 Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0 [ 191.405412][ T5810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 191.415691][ T5810] ===================================================== [ 191.423213][ T5810] Disabling lock debugging due to kernel taint [ 191.429595][ T5810] Kernel panic - not syncing: kmsan.panic set ... [ 191.436132][ T5810] CPU: 0 UID: 0 PID: 5810 Comm: syz-executor378 Tainted: G B 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0 [ 191.448851][ T5810] Tainted: [B]=BAD_PAGE [ 191.453087][ T5810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 191.463283][ T5810] Call Trace: [ 191.466698][ T5810] [ 191.469689][ T5810] dump_stack_lvl+0x216/0x2d0 [ 191.474493][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.480414][ T5810] dump_stack+0x1e/0x24 [ 191.484683][ T5810] panic+0x4e2/0xcf0 [ 191.488690][ T5810] ? kmsan_get_metadata+0x71/0x1c0 [ 191.493933][ T5810] kmsan_report+0x2c7/0x2d0 [ 191.498565][ T5810] ? pskb_expand_head+0x226/0x1a60 [ 191.503868][ T5810] ? bpf_prog_test_run+0x5e5/0xa30 [ 191.509122][ T5810] ? x64_sys_call+0x329c/0x3c30 [ 191.514249][ T5810] ? do_syscall_64+0xcd/0x1e0 [ 191.519030][ T5810] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 191.525243][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.530547][ T5810] ? __msan_warning+0x95/0x120 [ 191.535461][ T5810] ? eth_type_trans+0x632/0x990 [ 191.540535][ T5810] ? __dev_forward_skb2+0x3cc/0x900 [ 191.545862][ T5810] ? dev_forward_skb_nomtu+0x3c/0xe0 [ 191.551292][ T5810] ? __bpf_redirect+0x13a6/0x1690 [ 191.556429][ T5810] ? bpf_clone_redirect+0x37e/0x500 [ 191.561744][ T5810] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 191.567027][ T5810] ? __bpf_prog_run512+0xc5/0xf0 [ 191.572079][ T5810] ? bpf_test_run+0x546/0xd20 [ 191.576908][ T5810] ? bpf_prog_test_run_skb+0x18c4/0x2570 [ 191.582674][ T5810] ? bpf_prog_test_run+0x5e5/0xa30 [ 191.587988][ T5810] ? __sys_bpf+0x6aa/0xd90 [ 191.592502][ T5810] ? __x64_sys_bpf+0xa0/0xe0 [ 191.597184][ T5810] ? x64_sys_call+0x329c/0x3c30 [ 191.602151][ T5810] ? do_syscall_64+0xcd/0x1e0 [ 191.606939][ T5810] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 191.613206][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.619118][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.624414][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.630345][ T5810] ? eth_type_trans+0x41/0x990 [ 191.635244][ T5810] ? filter_irq_stacks+0x60/0x1a0 [ 191.640411][ T5810] ? stack_depot_save_flags+0x2c/0x750 [ 191.646156][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.651446][ T5810] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 191.657902][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.663224][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.669198][ T5810] __msan_warning+0x95/0x120 [ 191.673908][ T5810] eth_type_trans+0x632/0x990 [ 191.678713][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.684633][ T5810] __dev_forward_skb2+0x3cc/0x900 [ 191.689793][ T5810] dev_forward_skb_nomtu+0x3c/0xe0 [ 191.695034][ T5810] __bpf_redirect+0x13a6/0x1690 [ 191.699992][ T5810] bpf_clone_redirect+0x37e/0x500 [ 191.705117][ T5810] ___bpf_prog_run+0x13fe/0xe0f0 [ 191.710182][ T5810] __bpf_prog_run512+0xc5/0xf0 [ 191.715063][ T5810] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 191.721525][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.726818][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.732742][ T5810] ? do_softirq+0x3d/0x100 [ 191.737283][ T5810] ? filter_irq_stacks+0x60/0x1a0 [ 191.742445][ T5810] ? stack_depot_save_flags+0x2c/0x750 [ 191.748018][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.753314][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.758609][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.763901][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.769818][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.775729][ T5810] ? __pfx___bpf_prog_run512+0x10/0x10 [ 191.781305][ T5810] bpf_test_run+0x546/0xd20 [ 191.785917][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.791216][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.797132][ T5810] ? kmsan_get_metadata+0x13e/0x1c0 [ 191.802516][ T5810] ? bpf_test_run+0x3af/0xd20 [ 191.807310][ T5810] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 191.813229][ T5810] bpf_prog_test_run_skb+0x18c4/0x2570 [ 191.818930][ T5810] ? __pfx_bpf_prog_test_run_skb+0x10/0x10 [ 191.824848][ T5810] bpf_prog_test_run+0x5e5/0xa30 [ 191.829909][ T5810] __sys_bpf+0x6aa/0xd90 [ 191.834307][ T5810] __x64_sys_bpf+0xa0/0xe0 [ 191.838891][ T5810] x64_sys_call+0x329c/0x3c30 [ 191.843780][ T5810] do_syscall_64+0xcd/0x1e0 [ 191.848377][ T5810] ? clear_bhb_loop+0x25/0x80 [ 191.853177][ T5810] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 191.859199][ T5810] RIP: 0033:0x7fdb9f3e2fa9 [ 191.863695][ T5810] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 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 [ 191.883417][ T5810] RSP: 002b:00007fff4cae4c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 191.891943][ T5810] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdb9f3e2fa9 [ 191.899999][ T5810] RDX: 0000000000000023 RSI: 0000000020000240 RDI: 000000000000000a [ 191.908572][ T5810] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 191.916621][ T5810] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 191.924692][ T5810] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 191.932799][ T5810] [ 191.936181][ T5810] Kernel Offset: disabled [ 191.940571][ T5810] Rebooting in 86400 seconds..