./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3465466254 <...> Warning: Permanently added '10.128.1.22' (ED25519) to the list of known hosts. execve("./syz-executor3465466254", ["./syz-executor3465466254"], 0x7fff5e124690 /* 10 vars */) = 0 brk(NULL) = 0x55557ea57000 brk(0x55557ea57d00) = 0x55557ea57d00 arch_prctl(ARCH_SET_FS, 0x55557ea57380) = 0 set_tid_address(0x55557ea57650) = 5005 set_robust_list(0x55557ea57660, 24) = 0 rseq(0x55557ea57ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3465466254", 4096) = 28 getrandom("\x2e\xe7\xcd\x69\x7b\x50\x99\x11", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557ea57d00 brk(0x55557ea78d00) = 0x55557ea78d00 brk(0x55557ea79000) = 0x55557ea79000 mprotect(0x7fd20a245000, 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=0x55557ea57650) = 5006 ./strace-static-x86_64: Process 5006 attached [pid 5006] set_robust_list(0x55557ea57660, 24) = 0 [pid 5006] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5006] setsid() = 1 [pid 5006] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5006] unshare(CLONE_NEWNS) = 0 [pid 5006] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5006] unshare(CLONE_NEWIPC) = 0 [pid 5006] unshare(CLONE_NEWCGROUP) = 0 [pid 5006] unshare(CLONE_NEWUTS) = 0 [pid 5006] unshare(CLONE_SYSVSEM) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "16777216", 8) = 8 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "536870912", 9) = 9 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "8192", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5006] close(3) = 0 [pid 5006] getpid() = 1 [pid 5006] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5033] set_robust_list(0x55557ea57660, 24 [pid 5006] <... clone resumed>, child_tidptr=0x55557ea57650) = 2 [pid 5033] <... set_robust_list resumed>) = 0 [pid 5033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5033] setpgid(0, 0) = 0 [pid 5033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5033] write(3, "1000", 4) = 4 [pid 5033] close(3) = 0 [pid 5033] socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)) = 3 [pid 5033] ioctl(3, SIOCGIFINDEX, {ifr_name="geneve0", ifr_ifindex=61}) = 0 [ 166.304971][ T5033] ===================================================== [ 166.312585][ T5033] BUG: KMSAN: uninit-value in geneve_xmit+0x302d/0x5420 [ 166.320023][ T5033] geneve_xmit+0x302d/0x5420 [ 166.324858][ T5033] dev_hard_start_xmit+0x247/0xa20 [ 166.330326][ T5033] __dev_queue_xmit+0x348d/0x52c0 [ 166.335579][ T5033] packet_xmit+0x9c/0x6c0 [ 166.340204][ T5033] packet_sendmsg+0x8bb0/0x9ef0 [ 166.345312][ T5033] __sock_sendmsg+0x30f/0x380 [ 166.350640][ T5033] __sys_sendto+0x685/0x830 [ 166.355332][ T5033] __x64_sys_sendto+0x125/0x1d0 [ 166.360574][ T5033] do_syscall_64+0xd5/0x1f0 [ 166.365291][ T5033] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 166.371604][ T5033] [ 166.374130][ T5033] Uninit was created at: [ 166.379317][ T5033] kmem_cache_alloc_node+0x613/0xc50 [ 166.384878][ T5033] kmalloc_reserve+0x13d/0x4a0 [ 166.390085][ T5033] __alloc_skb+0x35b/0x7a0 [ 166.395996][ T5033] alloc_skb_with_frags+0xc8/0xbf0 [ 166.401416][ T5033] sock_alloc_send_pskb+0xa81/0xbf0 [ 166.407014][ T5033] packet_sendmsg+0x722d/0x9ef0 [ 166.412632][ T5033] __sock_sendmsg+0x30f/0x380 [ 166.417774][ T5033] __sys_sendto+0x685/0x830 [ 166.422716][ T5033] __x64_sys_sendto+0x125/0x1d0 [ 166.429205][ T5033] do_syscall_64+0xd5/0x1f0 [ 166.434009][ T5033] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 166.440312][ T5033] [ 166.442740][ T5033] CPU: 0 PID: 5033 Comm: syz-executor346 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 [ 166.453429][ T5033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 166.463863][ T5033] ===================================================== [ 166.471011][ T5033] Disabling lock debugging due to kernel taint [ 166.477637][ T5033] Kernel panic - not syncing: kmsan.panic set ... [ 166.484200][ T5033] CPU: 0 PID: 5033 Comm: syz-executor346 Tainted: G B 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 [ 166.496801][ T5033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 166.507013][ T5033] Call Trace: [ 166.510400][ T5033] [ 166.513449][ T5033] dump_stack_lvl+0x216/0x2d0 [ 166.518424][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.524508][ T5033] dump_stack+0x1e/0x30 [ 166.528860][ T5033] panic+0x4e2/0xcd0 [ 166.532879][ T5033] ? kmsan_get_metadata+0x121/0x1d0 [ 166.538389][ T5033] kmsan_report+0x2d5/0x2e0 [ 166.543151][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.548534][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.553880][ T5033] ? __msan_warning+0x95/0x120 [ 166.558876][ T5033] ? geneve_xmit+0x302d/0x5420 [ 166.563870][ T5033] ? dev_hard_start_xmit+0x247/0xa20 [ 166.569350][ T5033] ? __dev_queue_xmit+0x348d/0x52c0 [ 166.574734][ T5033] ? packet_xmit+0x9c/0x6c0 [ 166.579806][ T5033] ? packet_sendmsg+0x8bb0/0x9ef0 [ 166.585032][ T5033] ? __sock_sendmsg+0x30f/0x380 [ 166.590753][ T5033] ? __sys_sendto+0x685/0x830 [ 166.596672][ T5033] ? __x64_sys_sendto+0x125/0x1d0 [ 166.602873][ T5033] ? do_syscall_64+0xd5/0x1f0 [ 166.607955][ T5033] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 166.614347][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.619849][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.625932][ T5033] ? iptunnel_handle_offloads+0x490/0x640 [ 166.631866][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.637285][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.644389][ T5033] ? geneve_build_skb+0xb62/0xbd0 [ 166.650376][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.655840][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.661902][ T5033] __msan_warning+0x95/0x120 [ 166.666746][ T5033] geneve_xmit+0x302d/0x5420 [ 166.671636][ T5033] ? __pfx_geneve_xmit+0x10/0x10 [ 166.676909][ T5033] dev_hard_start_xmit+0x247/0xa20 [ 166.682266][ T5033] __dev_queue_xmit+0x348d/0x52c0 [ 166.687515][ T5033] ? __dev_queue_xmit+0x352/0x52c0 [ 166.692920][ T5033] ? filter_irq_stacks+0x164/0x1a0 [ 166.698306][ T5033] ? __pfx_advisor_max_pages_to_scan_show+0x8/0x10 [ 166.705044][ T5033] packet_xmit+0x9c/0x6c0 [ 166.709661][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.715117][ T5033] packet_sendmsg+0x8bb0/0x9ef0 [ 166.720192][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.725642][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.731702][ T5033] ? aa_label_sk_perm+0x644/0x790 [ 166.737084][ T5033] ? filter_irq_stacks+0x60/0x1a0 [ 166.742478][ T5033] ? mac_pton+0x4f0/0xfc0 [ 166.747167][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.752554][ T5033] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 166.758986][ T5033] ? __pfx_packet_sendmsg+0x10/0x10 [ 166.764317][ T5033] ? __pfx_packet_sendmsg+0x10/0x10 [ 166.769710][ T5033] __sock_sendmsg+0x30f/0x380 [ 166.774654][ T5033] __sys_sendto+0x685/0x830 [ 166.779896][ T5033] ? kmsan_get_metadata+0x146/0x1d0 [ 166.785450][ T5033] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 166.791605][ T5033] __x64_sys_sendto+0x125/0x1d0 [ 166.796707][ T5033] do_syscall_64+0xd5/0x1f0 [ 166.801540][ T5033] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 166.807883][ T5033] RIP: 0033:0x7fd20a1ccaa9 [ 166.812719][ T5033] 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 [ 166.833122][ T5033] RSP: 002b:00007fff80cc2ca8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 166.841836][ T5033] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd20a1ccaa9 [ 166.849980][ T5033] RDX: 0000000000000016 RSI: 0000000020000140 RDI: 0000000000000003 [ 166.858162][ T5033] RBP: 00000000000f4240 R08: 0000000020000000 R09: 0000000000000014 [ 166.866343][ T5033] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff80cc2d10 [ 166.874474][ T5033] R13: 0000000000000001 R14: 00007fff80cc2d10 R15: 0000000000000003 [ 166.882862][ T5033] [ 166.886736][ T5033] Kernel Offset: disabled [ 166.891167][ T5033] Rebooting in 86400 seconds..