./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1345662632 <...> Warning: Permanently added '10.128.1.109' (ED25519) to the list of known hosts. execve("./syz-executor1345662632", ["./syz-executor1345662632"], 0x7ffdd74b8f50 /* 10 vars */) = 0 brk(NULL) = 0x5555564e7000 brk(0x5555564e7d00) = 0x5555564e7d00 arch_prctl(ARCH_SET_FS, 0x5555564e7380) = 0 set_tid_address(0x5555564e7650) = 4993 set_robust_list(0x5555564e7660, 24) = 0 rseq(0x5555564e7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1345662632", 4096) = 28 getrandom("\x3e\x8d\x6a\x5b\xd1\x88\x91\xbf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555564e7d00 brk(0x555556508d00) = 0x555556508d00 brk(0x555556509000) = 0x555556509000 mprotect(0x7f4aac6a8000, 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=0x5555564e7650) = 4994 ./strace-static-x86_64: Process 4994 attached [pid 4994] set_robust_list(0x5555564e7660, 24) = 0 [pid 4994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] setpgid(0, 0) = 0 [pid 4994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4994] write(3, "1000", 4) = 4 [pid 4994] close(3) = 0 [pid 4994] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 4994] openat(AT_FDCWD, ".", O_RDONLY) = 4 [ 162.290972][ T4994] ===================================================== [ 162.298701][ T4994] BUG: KMSAN: uninit-value in validate_set+0x196/0x15d0 [ 162.306128][ T4994] validate_set+0x196/0x15d0 [ 162.310935][ T4994] __ovs_nla_copy_actions+0x56b/0x6940 [ 162.316774][ T4994] ovs_nla_copy_actions+0x342/0x530 [ 162.322227][ T4994] ovs_flow_cmd_new+0x956/0x18c0 [ 162.327516][ T4994] genl_rcv_msg+0x11ec/0x1290 [ 162.332429][ T4994] netlink_rcv_skb+0x371/0x650 [ 162.337631][ T4994] genl_rcv+0x40/0x60 [ 162.341917][ T4994] netlink_unicast+0xf47/0x1250 [ 162.347118][ T4994] netlink_sendmsg+0x1238/0x13d0 [ 162.352284][ T4994] ____sys_sendmsg+0x9c2/0xd60 [ 162.357413][ T4994] ___sys_sendmsg+0x28d/0x3c0 [ 162.362312][ T4994] __x64_sys_sendmsg+0x307/0x490 [ 162.367661][ T4994] do_syscall_64+0x41/0xc0 [ 162.372254][ T4994] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 162.378550][ T4994] [ 162.380988][ T4994] Uninit was created at: [ 162.385618][ T4994] slab_post_alloc_hook+0x12f/0xb70 [ 162.391036][ T4994] kmem_cache_alloc_node+0x577/0xa80 [ 162.396604][ T4994] kmalloc_reserve+0x13d/0x4a0 [ 162.401595][ T4994] __alloc_skb+0x318/0x740 [ 162.406957][ T4994] netlink_sendmsg+0xb34/0x13d0 [ 162.412035][ T4994] ____sys_sendmsg+0x9c2/0xd60 [ 162.417620][ T4994] ___sys_sendmsg+0x28d/0x3c0 [ 162.422526][ T4994] __x64_sys_sendmsg+0x307/0x490 [ 162.427875][ T4994] do_syscall_64+0x41/0xc0 [ 162.432471][ T4994] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 162.438900][ T4994] [ 162.441346][ T4994] CPU: 1 PID: 4994 Comm: syz-executor134 Not tainted 6.6.0-rc2-syzkaller-00018-g2cf0f7156238 #0 [ 162.452298][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 162.462613][ T4994] ===================================================== [ 162.470012][ T4994] Disabling lock debugging due to kernel taint [ 162.476471][ T4994] Kernel panic - not syncing: kmsan.panic set ... [ 162.483060][ T4994] CPU: 1 PID: 4994 Comm: syz-executor134 Tainted: G B 6.6.0-rc2-syzkaller-00018-g2cf0f7156238 #0 [ 162.495262][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 162.505661][ T4994] Call Trace: [ 162.509053][ T4994] [ 162.512087][ T4994] dump_stack_lvl+0x1bf/0x240 [ 162.516977][ T4994] dump_stack+0x1e/0x20 [ 162.521324][ T4994] panic+0x4d5/0xc70 [ 162.525477][ T4994] ? add_taint+0x108/0x1a0 [ 162.530501][ T4994] kmsan_report+0x2d0/0x2d0 [ 162.535264][ T4994] ? __module_address+0xef/0x7e0 [ 162.540438][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.546423][ T4994] ? __msan_warning+0x96/0x110 [ 162.551392][ T4994] ? validate_set+0x196/0x15d0 [ 162.556395][ T4994] ? __ovs_nla_copy_actions+0x56b/0x6940 [ 162.562271][ T4994] ? ovs_nla_copy_actions+0x342/0x530 [ 162.568079][ T4994] ? ovs_flow_cmd_new+0x956/0x18c0 [ 162.573402][ T4994] ? genl_rcv_msg+0x11ec/0x1290 [ 162.578445][ T4994] ? netlink_rcv_skb+0x371/0x650 [ 162.583548][ T4994] ? genl_rcv+0x40/0x60 [ 162.587919][ T4994] ? netlink_unicast+0xf47/0x1250 [ 162.593108][ T4994] ? netlink_sendmsg+0x1238/0x13d0 [ 162.598541][ T4994] ? ____sys_sendmsg+0x9c2/0xd60 [ 162.603848][ T4994] ? ___sys_sendmsg+0x28d/0x3c0 [ 162.609016][ T4994] ? __x64_sys_sendmsg+0x307/0x490 [ 162.614282][ T4994] ? do_syscall_64+0x41/0xc0 [ 162.619084][ T4994] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 162.625436][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.631436][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.637546][ T4994] ? __module_address+0xef/0x7e0 [ 162.643176][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.649462][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.655538][ T4994] __msan_warning+0x96/0x110 [ 162.660340][ T4994] validate_set+0x196/0x15d0 [ 162.665174][ T4994] ? kernel_text_address+0x125/0x1b0 [ 162.670814][ T4994] ? __kernel_text_address+0x2a/0x90 [ 162.677347][ T4994] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 162.684034][ T4994] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 162.690780][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.697895][ T4994] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 162.704476][ T4994] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 162.711052][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.717222][ T4994] __ovs_nla_copy_actions+0x56b/0x6940 [ 162.722947][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.728938][ T4994] ? kmsan_slab_alloc+0xdd/0x150 [ 162.734206][ T4994] ? slab_post_alloc_hook+0x12f/0xb70 [ 162.739990][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.745978][ T4994] ? __kmem_cache_alloc_node+0x546/0x8d0 [ 162.751930][ T4994] ? ovs_nla_copy_actions+0xa7/0x530 [ 162.757418][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.763457][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.769476][ T4994] ovs_nla_copy_actions+0x342/0x530 [ 162.774930][ T4994] ovs_flow_cmd_new+0x956/0x18c0 [ 162.780088][ T4994] ? ovs_dp_cmd_fill_info+0x1310/0x1310 [ 162.785808][ T4994] genl_rcv_msg+0x11ec/0x1290 [ 162.790797][ T4994] ? ovs_dp_cmd_fill_info+0x1310/0x1310 [ 162.796584][ T4994] netlink_rcv_skb+0x371/0x650 [ 162.801514][ T4994] ? genl_bind+0x450/0x450 [ 162.806262][ T4994] ? genl_pernet_exit+0x60/0x60 [ 162.811285][ T4994] genl_rcv+0x40/0x60 [ 162.815485][ T4994] netlink_unicast+0xf47/0x1250 [ 162.820499][ T4994] netlink_sendmsg+0x1238/0x13d0 [ 162.825658][ T4994] ? netlink_getsockopt+0x980/0x980 [ 162.831121][ T4994] ____sys_sendmsg+0x9c2/0xd60 [ 162.836178][ T4994] ___sys_sendmsg+0x28d/0x3c0 [ 162.841233][ T4994] ? filter_irq_stacks+0x60/0x1a0 [ 162.846488][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.852509][ T4994] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 162.858950][ T4994] __x64_sys_sendmsg+0x307/0x490 [ 162.864150][ T4994] do_syscall_64+0x41/0xc0 [ 162.869145][ T4994] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 162.875411][ T4994] RIP: 0033:0x7f4aac635a79 [ 162.880534][ T4994] 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 [ 162.900577][ T4994] RSP: 002b:00007ffeddb5c0b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 162.909240][ T4994] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4aac635a79 [ 162.917460][ T4994] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 162.925574][ T4994] RBP: 00007f4aac6a85f0 R08: 0000000000000006 R09: 0000000000000006 [ 162.933869][ T4994] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000001 [ 162.942007][ T4994] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 162.950310][ T4994] [ 162.953841][ T4994] Kernel Offset: disabled [ 162.958345][ T4994] Rebooting in 86400 seconds..