./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2441809013 <...> Warning: Permanently added '10.128.1.160' (ED25519) to the list of known hosts. execve("./syz-executor2441809013", ["./syz-executor2441809013"], 0x7fff3d432e20 /* 10 vars */) = 0 brk(NULL) = 0x555571c56000 brk(0x555571c56d00) = 0x555571c56d00 arch_prctl(ARCH_SET_FS, 0x555571c56380) = 0 set_tid_address(0x555571c56650) = 5051 set_robust_list(0x555571c56660, 24) = 0 rseq(0x555571c56ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2441809013", 4096) = 28 getrandom("\x1e\xaa\xf7\x47\x3c\x0a\x2a\x85", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555571c56d00 brk(0x555571c77d00) = 0x555571c77d00 brk(0x555571c78000) = 0x555571c78000 mprotect(0x7f8075f59000, 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=0x555571c56650) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x555571c56660, 24) = 0 [pid 5052] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setsid() = 1 [pid 5052] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5052] unshare(CLONE_NEWNS) = 0 [pid 5052] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5052] unshare(CLONE_NEWIPC) = 0 [pid 5052] unshare(CLONE_NEWCGROUP) = 0 [pid 5052] unshare(CLONE_NEWUTS) = 0 [pid 5052] unshare(CLONE_SYSVSEM) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "16777216", 8) = 8 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "536870912", 9) = 9 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "8192", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5052] close(3) = 0 [pid 5052] getpid() = 1 [pid 5052] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5078] set_robust_list(0x555571c56660, 24 [pid 5052] <... clone resumed>, child_tidptr=0x555571c56650) = 2 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] write(1, "executing program\n", 18executing program ) = 18 [pid 5078] socket(AF_PACKET, SOCK_RAW, htons(0 /* ETH_P_??? */)) = 3 [pid 5078] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 [pid 5078] ioctl(4, SIOCGIFINDEX, {ifr_name="ip6gretap0", ifr_ifindex=11}) = 0 [pid 5078] bind(3, {sa_family=AF_PACKET, sll_protocol=htons(0 /* ETH_P_??? */), sll_ifindex=if_nametoindex("wpan0"), sll_hatype=ARPHRD_ETHER, sll_pkttype=PACKET_HOST, sll_halen=6, sll_addr=[0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb]}, 20) = 0 [pid 5078] setsockopt(3, SOL_PACKET, PACKET_VNET_HDR, [233], 4) = 0 [ 166.853445][ T5078] ===================================================== [ 166.860696][ T5078] BUG: KMSAN: uninit-value in validate_xmit_skb+0xdf0/0x1960 [ 166.868396][ T5078] validate_xmit_skb+0xdf0/0x1960 [ 166.873618][ T5078] validate_xmit_skb_list+0xf4/0x2f0 [ 166.879171][ T5078] sch_direct_xmit+0xd0/0xd50 [ 166.884013][ T5078] __dev_queue_xmit+0x2eec/0x5350 [ 166.889354][ T5078] packet_xmit+0x9c/0x6c0 [ 166.893904][ T5078] packet_sendmsg+0x8bb0/0x9ef0 [ 166.899065][ T5078] __sock_sendmsg+0x30f/0x380 [ 166.903919][ T5078] ____sys_sendmsg+0x877/0xb60 [ 166.909042][ T5078] ___sys_sendmsg+0x28d/0x3c0 [ 166.916979][ T5078] __x64_sys_sendmsg+0x307/0x4a0 [ 166.922106][ T5078] x64_sys_call+0xc4b/0x3b50 [ 166.926962][ T5078] do_syscall_64+0xcf/0x1e0 [ 166.931681][ T5078] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 166.937888][ T5078] [ 166.940310][ T5078] Uninit was created at: [ 166.944784][ T5078] __kmalloc_node_track_caller+0x767/0x10c0 [ 166.951019][ T5078] kmalloc_reserve+0x249/0x4a0 [ 166.955992][ T5078] __alloc_skb+0x35b/0x7a0 [ 166.960779][ T5078] alloc_skb_with_frags+0xc8/0xbf0 [ 166.966086][ T5078] sock_alloc_send_pskb+0xa81/0xbf0 [ 166.971666][ T5078] packet_sendmsg+0x722d/0x9ef0 [ 166.976852][ T5078] __sock_sendmsg+0x30f/0x380 [ 166.981630][ T5078] ____sys_sendmsg+0x877/0xb60 [ 166.986648][ T5078] ___sys_sendmsg+0x28d/0x3c0 [ 166.991499][ T5078] __x64_sys_sendmsg+0x307/0x4a0 [ 166.996700][ T5078] x64_sys_call+0xc4b/0x3b50 [ 167.001492][ T5078] do_syscall_64+0xcf/0x1e0 [ 167.006199][ T5078] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 167.012403][ T5078] [ 167.014837][ T5078] CPU: 1 PID: 5078 Comm: syz-executor244 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 167.025188][ T5078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 167.035455][ T5078] ===================================================== [ 167.042619][ T5078] Disabling lock debugging due to kernel taint [ 167.048920][ T5078] Kernel panic - not syncing: kmsan.panic set ... [ 167.055400][ T5078] CPU: 1 PID: 5078 Comm: syz-executor244 Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 167.067079][ T5078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 167.077287][ T5078] Call Trace: [ 167.080687][ T5078] [ 167.083733][ T5078] dump_stack_lvl+0x216/0x2d0 [ 167.088544][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.094519][ T5078] dump_stack+0x1e/0x30 [ 167.098804][ T5078] panic+0x4e2/0xcd0 [ 167.102856][ T5078] ? kmsan_get_metadata+0xf1/0x1d0 [ 167.108186][ T5078] kmsan_report+0x2d5/0x2e0 [ 167.112882][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.118876][ T5078] ? __msan_warning+0x95/0x120 [ 167.123735][ T5078] ? validate_xmit_skb+0xdf0/0x1960 [ 167.129076][ T5078] ? validate_xmit_skb_list+0xf4/0x2f0 [ 167.134712][ T5078] ? sch_direct_xmit+0xd0/0xd50 [ 167.139693][ T5078] ? __dev_queue_xmit+0x2eec/0x5350 [ 167.145094][ T5078] ? packet_xmit+0x9c/0x6c0 [ 167.149798][ T5078] ? packet_sendmsg+0x8bb0/0x9ef0 [ 167.154995][ T5078] ? __sock_sendmsg+0x30f/0x380 [ 167.159991][ T5078] ? ____sys_sendmsg+0x877/0xb60 [ 167.165150][ T5078] ? ___sys_sendmsg+0x28d/0x3c0 [ 167.170211][ T5078] ? __x64_sys_sendmsg+0x307/0x4a0 [ 167.175481][ T5078] ? x64_sys_call+0xc4b/0x3b50 [ 167.180391][ T5078] ? do_syscall_64+0xcf/0x1e0 [ 167.185279][ T5078] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 167.191555][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.196919][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.202921][ T5078] ? skb_network_protocol+0x955/0xa10 [ 167.208506][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.213889][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.219911][ T5078] ? netif_skb_features+0x10dc/0x1350 [ 167.225437][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.230828][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.236932][ T5078] __msan_warning+0x95/0x120 [ 167.241708][ T5078] validate_xmit_skb+0xdf0/0x1960 [ 167.246958][ T5078] validate_xmit_skb_list+0xf4/0x2f0 [ 167.252442][ T5078] sch_direct_xmit+0xd0/0xd50 [ 167.257275][ T5078] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 167.263769][ T5078] __dev_queue_xmit+0x2eec/0x5350 [ 167.268967][ T5078] ? __dev_queue_xmit+0x34f/0x5350 [ 167.274274][ T5078] packet_xmit+0x9c/0x6c0 [ 167.278813][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.284205][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.290165][ T5078] packet_sendmsg+0x8bb0/0x9ef0 [ 167.295210][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.300578][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.306532][ T5078] ? aa_label_sk_perm+0x644/0x790 [ 167.311825][ T5078] ? filter_irq_stacks+0x60/0x1a0 [ 167.317069][ T5078] ? dql_completed+0xc80/0x1270 [ 167.322073][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.327462][ T5078] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 167.334008][ T5078] ? __pfx_packet_sendmsg+0x10/0x10 [ 167.339379][ T5078] ? __pfx_packet_sendmsg+0x10/0x10 [ 167.344712][ T5078] __sock_sendmsg+0x30f/0x380 [ 167.349572][ T5078] ____sys_sendmsg+0x877/0xb60 [ 167.354569][ T5078] ___sys_sendmsg+0x28d/0x3c0 [ 167.359452][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.364853][ T5078] ? filter_irq_stacks+0x60/0x1a0 [ 167.370061][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.375450][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.381439][ T5078] ? kmsan_get_metadata+0x146/0x1d0 [ 167.386801][ T5078] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 167.392760][ T5078] __x64_sys_sendmsg+0x307/0x4a0 [ 167.397894][ T5078] ? post_one_notification+0xa40/0xc50 [ 167.403496][ T5078] ? syscall_trace_enter+0x279/0x600 [ 167.409004][ T5078] x64_sys_call+0xc4b/0x3b50 [ 167.413812][ T5078] do_syscall_64+0xcf/0x1e0 [ 167.418538][ T5078] ? clear_bhb_loop+0x25/0x80 [ 167.423385][ T5078] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 167.429447][ T5078] RIP: 0033:0x7f8075ee0b69 [ 167.434017][ T5078] 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 [ 167.453916][ T5078] RSP: 002b:00007ffe8ec53f38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 167.462532][ T5078] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8075ee0b69 [ 167.470648][ T5078] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 167.478765][ T5078] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 167.486886][ T5078] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe8ec53f90 [ 167.494997][ T5078] R13: 0000000000000001 R14: 00007ffe8ec53f90 R15: 0000000000000003 [ 167.503101][ T5078] [ 167.506340][ T5078] Kernel Offset: disabled [ 167.510729][ T5078] Rebooting in 86400 seconds..