./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4063736898 <...> Warning: Permanently added '10.128.1.105' (ED25519) to the list of known hosts. execve("./syz-executor4063736898", ["./syz-executor4063736898"], 0x7ffeda619b90 /* 10 vars */) = 0 brk(NULL) = 0x5555719f1000 brk(0x5555719f1e00) = 0x5555719f1e00 arch_prctl(ARCH_SET_FS, 0x5555719f1480) = 0 set_tid_address(0x5555719f1750) = 5013 set_robust_list(0x5555719f1760, 24) = 0 rseq(0x5555719f1da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4063736898", 4096) = 28 getrandom("\x0a\x41\xdc\xea\x91\xf6\xd7\x4f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555719f1e00 brk(0x555571a12e00) = 0x555571a12e00 brk(0x555571a13000) = 0x555571a13000 mprotect(0x7f8173805000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f817375d970, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f8173765390}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f817375d970, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f8173765390}, NULL, 8) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555719f1750) = 5014 ./strace-static-x86_64: Process 5014 attached [pid 5014] set_robust_list(0x5555719f1760, 24) = 0 [pid 5014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5014] setpgid(0, 0) = 0 [pid 5014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5014] write(3, "1000", 4) = 4 [pid 5014] close(3) = 0 [pid 5014] mkdir("./file0", 0777) = 0 [pid 5014] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5014] pipe2([3, 4], 0) = 0 [ 170.140652][ T5014] ===================================================== [ 170.148068][ T5014] BUG: KMSAN: uninit-value in v9fs_evict_inode+0x109/0x130 [ 170.155740][ T5014] v9fs_evict_inode+0x109/0x130 [ 170.160808][ T5014] evict+0x3ae/0xa60 [ 170.165061][ T5014] iput+0x9ca/0xe10 [ 170.169120][ T5014] iget_failed+0x15e/0x180 [ 170.173831][ T5014] v9fs_fid_iget_dotl+0x375/0x570 [ 170.179076][ T5014] v9fs_mount+0xc02/0x12b0 [ 170.183785][ T5014] legacy_get_tree+0x114/0x290 [ 170.188844][ T5014] vfs_get_tree+0xa7/0x570 [ 170.193809][ T5014] do_new_mount+0x71f/0x15e0 [ 170.198628][ T5014] path_mount+0x742/0x1f20 [ 170.203338][ T5014] __se_sys_mount+0x725/0x810 [ 170.208245][ T5014] __x64_sys_mount+0xe4/0x150 [ 170.213243][ T5014] do_syscall_64+0xd5/0x1f0 [ 170.217990][ T5014] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 170.224343][ T5014] [ 170.226785][ T5014] Uninit was created at: [ 170.231346][ T5014] __alloc_pages+0x9d6/0xe70 [ 170.236278][ T5014] new_slab+0x2de/0x1400 [ 170.240728][ T5014] ___slab_alloc+0x1184/0x33d0 [ 170.245761][ T5014] kmem_cache_alloc_lru+0x6d7/0xbe0 [ 170.251217][ T5014] v9fs_alloc_inode+0x62/0x130 [ 170.256473][ T5014] alloc_inode+0x86/0x460 [ 170.261061][ T5014] iget_locked+0x2bf/0xee0 [ 170.265907][ T5014] v9fs_fid_iget_dotl+0x7f/0x570 [ 170.271088][ T5014] v9fs_mount+0xc02/0x12b0 [ 170.275788][ T5014] legacy_get_tree+0x114/0x290 [ 170.280782][ T5014] vfs_get_tree+0xa7/0x570 [ 170.285588][ T5014] do_new_mount+0x71f/0x15e0 [ 170.290405][ T5014] path_mount+0x742/0x1f20 [ 170.295124][ T5014] __se_sys_mount+0x725/0x810 [ 170.300044][ T5014] __x64_sys_mount+0xe4/0x150 [ 170.305730][ T5014] do_syscall_64+0xd5/0x1f0 [ 170.310446][ T5014] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 170.316715][ T5014] [ 170.319160][ T5014] CPU: 1 PID: 5014 Comm: syz-executor406 Not tainted 6.8.0-syzkaller-11136-g66a27abac311 #0 [ 170.329535][ T5014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 170.339849][ T5014] ===================================================== [ 170.347167][ T5014] Disabling lock debugging due to kernel taint [ 170.353486][ T5014] Kernel panic - not syncing: kmsan.panic set ... [ 170.360014][ T5014] CPU: 1 PID: 5014 Comm: syz-executor406 Tainted: G B 6.8.0-syzkaller-11136-g66a27abac311 #0 [ 170.371802][ T5014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 170.382064][ T5014] Call Trace: [ 170.385470][ T5014] [ 170.388487][ T5014] dump_stack_lvl+0x216/0x2d0 [ 170.393348][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.399371][ T5014] dump_stack+0x1e/0x30 [ 170.403769][ T5014] panic+0x4e2/0xcd0 [ 170.407918][ T5014] ? kmsan_get_metadata+0x51/0x1d0 [ 170.413217][ T5014] kmsan_report+0x2d5/0x2e0 [ 170.417972][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.423984][ T5014] ? __msan_warning+0x95/0x120 [ 170.429005][ T5014] ? v9fs_evict_inode+0x109/0x130 [ 170.434262][ T5014] ? evict+0x3ae/0xa60 [ 170.438541][ T5014] ? iput+0x9ca/0xe10 [ 170.442743][ T5014] ? iget_failed+0x15e/0x180 [ 170.447536][ T5014] ? v9fs_fid_iget_dotl+0x375/0x570 [ 170.452910][ T5014] ? v9fs_mount+0xc02/0x12b0 [ 170.457697][ T5014] ? legacy_get_tree+0x114/0x290 [ 170.462794][ T5014] ? vfs_get_tree+0xa7/0x570 [ 170.467617][ T5014] ? do_new_mount+0x71f/0x15e0 [ 170.472536][ T5014] ? path_mount+0x742/0x1f20 [ 170.477262][ T5014] ? __se_sys_mount+0x725/0x810 [ 170.482255][ T5014] ? __x64_sys_mount+0xe4/0x150 [ 170.487248][ T5014] ? do_syscall_64+0xd5/0x1f0 [ 170.492064][ T5014] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 170.498345][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.504459][ T5014] ? filemap_fdatawrite_wbc+0x128/0x270 [ 170.510186][ T5014] ? filemap_fdatawrite+0xbf/0xf0 [ 170.515384][ T5014] ? kmsan_get_metadata+0x146/0x1d0 [ 170.520866][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.526970][ T5014] __msan_warning+0x95/0x120 [ 170.531772][ T5014] v9fs_evict_inode+0x109/0x130 [ 170.536849][ T5014] ? __pfx_v9fs_evict_inode+0x10/0x10 [ 170.542431][ T5014] evict+0x3ae/0xa60 [ 170.546497][ T5014] iput+0x9ca/0xe10 [ 170.550546][ T5014] iget_failed+0x15e/0x180 [ 170.555128][ T5014] v9fs_fid_iget_dotl+0x375/0x570 [ 170.560314][ T5014] ? kmsan_get_metadata+0x146/0x1d0 [ 170.565680][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.571718][ T5014] v9fs_mount+0xc02/0x12b0 [ 170.576381][ T5014] legacy_get_tree+0x114/0x290 [ 170.581377][ T5014] ? __pfx_v9fs_mount+0x10/0x10 [ 170.586450][ T5014] ? __pfx_legacy_get_tree+0x10/0x10 [ 170.591973][ T5014] vfs_get_tree+0xa7/0x570 [ 170.596655][ T5014] ? mount_capable+0x97/0x120 [ 170.601573][ T5014] do_new_mount+0x71f/0x15e0 [ 170.606415][ T5014] ? kmsan_get_metadata+0x146/0x1d0 [ 170.611931][ T5014] path_mount+0x742/0x1f20 [ 170.616579][ T5014] ? user_path_at_empty+0x325/0x3a0 [ 170.622035][ T5014] __se_sys_mount+0x725/0x810 [ 170.626890][ T5014] ? _raw_spin_unlock_irq+0x31/0x50 [ 170.632314][ T5014] ? kmsan_get_metadata+0x146/0x1d0 [ 170.637713][ T5014] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 170.643806][ T5014] __x64_sys_mount+0xe4/0x150 [ 170.648750][ T5014] do_syscall_64+0xd5/0x1f0 [ 170.653500][ T5014] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 170.659694][ T5014] RIP: 0033:0x7f8173792669 [ 170.664230][ T5014] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 170.684101][ T5014] RSP: 002b:00007fff7205da88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 170.692744][ T5014] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8173792669 [ 170.700992][ T5014] RDX: 0000000020000000 RSI: 00000000200002c0 RDI: 0000000000000000 [ 170.709150][ T5014] RBP: 0000000000000000 R08: 0000000020000140 R09: 00007fff7205dac0 [ 170.717287][ T5014] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7205dac0 [ 170.725398][ T5014] R13: 00007fff7205dd48 R14: 431bde82d7b634db R15: 00007f81737db074 [ 170.733571][ T5014] [ 170.737063][ T5014] Kernel Offset: disabled [ 170.741472][ T5014] Rebooting in 86400 seconds..