./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor664596633 <...> Warning: Permanently added '10.128.0.222' (ED25519) to the list of known hosts. execve("./syz-executor664596633", ["./syz-executor664596633"], 0x7ffde78e3a00 /* 10 vars */) = 0 brk(NULL) = 0x55557dfec000 brk(0x55557dfecd00) = 0x55557dfecd00 arch_prctl(ARCH_SET_FS, 0x55557dfec380) = 0 set_tid_address(0x55557dfec650) = 5780 set_robust_list(0x55557dfec660, 24) = 0 rseq(0x55557dfecca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor664596633", 4096) = 27 getrandom("\x39\x8a\x42\xf1\x9e\xf4\x11\xa3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557dfecd00 brk(0x55557e00dd00) = 0x55557e00dd00 brk(0x55557e00e000) = 0x55557e00e000 mprotect(0x7fef33f9a000, 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 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=0x55557dfec650) = 5781 ./strace-static-x86_64: Process 5781 attached [pid 5781] set_robust_list(0x55557dfec660, 24) = 0 [pid 5781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5781] setpgid(0, 0) = 0 [pid 5781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5781] write(3, "1000", 4) = 4 [pid 5781] close(3) = 0 [pid 5781] write(1, "executing program\n", 18executing program ) = 18 [pid 5781] memfd_create("syzkaller", 0) = 3 [pid 5781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fef2ba00000 [pid 5781] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x08\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\x51\x49\x92\x54\x8e\xa5\x9a\x39\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5781] munmap(0x7fef2ba00000, 138412032) = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5781] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5781] close(3) = 0 [pid 5781] close(4) = 0 [pid 5781] mkdir("./file0", 0777) = 0 [ 181.724503][ T5781] loop0: detected capacity change from 0 to 4096 [pid 5781] mount("/dev/loop0", "./file0", "ntfs3", 0, "") = 0 [pid 5781] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5781] chdir("./file0") = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5781] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 181.829239][ T5781] ===================================================== [ 181.836893][ T5781] BUG: KMSAN: uninit-value in longest_match_std+0x56b/0xe00 [ 181.844526][ T5781] longest_match_std+0x56b/0xe00 [ 181.849649][ T5781] compress_lznt+0x41f/0xef0 [ 181.854514][ T5781] ni_write_frame+0xf8f/0x1c80 [ 181.859438][ T5781] ntfs_compress_write+0x265b/0x3a20 [ 181.864973][ T5781] ntfs_file_write_iter+0x9f3/0xe60 [ 181.870340][ T5781] vfs_write+0xb2b/0x1540 [ 181.874979][ T5781] ksys_write+0x240/0x4b0 [ 181.879447][ T5781] __x64_sys_write+0x93/0xe0 [ 181.884343][ T5781] x64_sys_call+0x3161/0x3c30 [ 181.889217][ T5781] do_syscall_64+0xcd/0x1e0 [ 181.893957][ T5781] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.900043][ T5781] [ 181.902585][ T5781] Uninit was created at: [ 181.906988][ T5781] __alloc_pages_noprof+0x9a7/0xe00 [ 181.912427][ T5781] alloc_pages_mpol_noprof+0x299/0x990 [ 181.918057][ T5781] folio_alloc_noprof+0x1db/0x310 [ 181.923327][ T5781] filemap_alloc_folio_noprof+0xa6/0x440 [ 181.929140][ T5781] __filemap_get_folio+0xac4/0x1550 [ 181.934612][ T5781] ntfs_get_frame_pages+0xd6/0x6b0 [ 181.939919][ T5781] ntfs_compress_write+0x1cd2/0x3a20 [ 181.945463][ T5781] ntfs_file_write_iter+0x9f3/0xe60 [ 181.950914][ T5781] vfs_write+0xb2b/0x1540 [ 181.955355][ T5781] ksys_write+0x240/0x4b0 [ 181.959820][ T5781] __x64_sys_write+0x93/0xe0 [ 181.964721][ T5781] x64_sys_call+0x3161/0x3c30 [ 181.969590][ T5781] do_syscall_64+0xcd/0x1e0 [ 181.974307][ T5781] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.980407][ T5781] [ 181.983014][ T5781] CPU: 0 UID: 0 PID: 5781 Comm: syz-executor664 Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0 [ 181.994526][ T5781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 182.004790][ T5781] ===================================================== [ 182.011885][ T5781] Disabling lock debugging due to kernel taint [ 182.018163][ T5781] Kernel panic - not syncing: kmsan.panic set ... [ 182.024689][ T5781] CPU: 0 UID: 0 PID: 5781 Comm: syz-executor664 Tainted: G B 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0 [ 182.037394][ T5781] Tainted: [B]=BAD_PAGE [ 182.041600][ T5781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 182.051766][ T5781] Call Trace: [ 182.055133][ T5781] [ 182.058116][ T5781] dump_stack_lvl+0x216/0x2d0 [ 182.062932][ T5781] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.068901][ T5781] dump_stack+0x1e/0x24 [ 182.073163][ T5781] panic+0x4e2/0xcf0 [ 182.077168][ T5781] ? kmsan_get_metadata+0x81/0x1c0 [ 182.082386][ T5781] kmsan_report+0x2c7/0x2d0 [ 182.087018][ T5781] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.092309][ T5781] ? __msan_warning+0x95/0x120 [ 182.097216][ T5781] ? longest_match_std+0x56b/0xe00 [ 182.102490][ T5781] ? compress_lznt+0x41f/0xef0 [ 182.107351][ T5781] ? ni_write_frame+0xf8f/0x1c80 [ 182.112386][ T5781] ? ntfs_compress_write+0x265b/0x3a20 [ 182.117952][ T5781] ? ntfs_file_write_iter+0x9f3/0xe60 [ 182.123431][ T5781] ? vfs_write+0xb2b/0x1540 [ 182.128044][ T5781] ? ksys_write+0x240/0x4b0 [ 182.132654][ T5781] ? __x64_sys_write+0x93/0xe0 [ 182.137533][ T5781] ? x64_sys_call+0x3161/0x3c30 [ 182.142529][ T5781] ? do_syscall_64+0xcd/0x1e0 [ 182.147384][ T5781] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.153611][ T5781] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 182.160151][ T5781] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 182.166376][ T5781] ? irqentry_enter+0x37/0x60 [ 182.171187][ T5781] ? sysvec_apic_timer_interrupt+0x52/0x90 [ 182.177159][ T5781] ? __pfx_longest_match_std+0x10/0x10 [ 182.182785][ T5781] ? longest_match_std+0xa1a/0xe00 [ 182.188030][ T5781] ? kmsan_get_metadata+0x60/0x1c0 [ 182.193299][ T5781] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.199250][ T5781] __msan_warning+0x95/0x120 [ 182.204042][ T5781] longest_match_std+0x56b/0xe00 [ 182.209103][ T5781] compress_lznt+0x41f/0xef0 [ 182.213793][ T5781] ? __pfx_longest_match_std+0x10/0x10 [ 182.219377][ T5781] ni_write_frame+0xf8f/0x1c80 [ 182.224256][ T5781] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.229567][ T5781] ntfs_compress_write+0x265b/0x3a20 [ 182.235016][ T5781] ntfs_file_write_iter+0x9f3/0xe60 [ 182.240342][ T5781] vfs_write+0xb2b/0x1540 [ 182.244947][ T5781] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 182.250845][ T5781] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.256784][ T5781] ksys_write+0x240/0x4b0 [ 182.261301][ T5781] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.266602][ T5781] __x64_sys_write+0x93/0xe0 [ 182.271315][ T5781] x64_sys_call+0x3161/0x3c30 [ 182.276134][ T5781] do_syscall_64+0xcd/0x1e0 [ 182.280736][ T5781] ? clear_bhb_loop+0x25/0x80 [ 182.285536][ T5781] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.291559][ T5781] RIP: 0033:0x7fef33f07d19 [ 182.296059][ T5781] 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 [ 182.315777][ T5781] RSP: 002b:00007ffceaccb748 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 182.324477][ T5781] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fef33f07d19 [ 182.332583][ T5781] RDX: 000000000000fea0 RSI: 0000000020000040 RDI: 0000000000000004 [ 182.340641][ T5781] RBP: 00007fef33f9a5f0 R08: 00007ffceaccb4e7 R09: 000055557dfed4c0 [ 182.348703][ T5781] R10: 0000000000000012 R11: 0000000000000246 R12: 00007ffceaccb770 [ 182.356778][ T5781] R13: 00007ffceaccb998 R14: 431bde82d7b634db R15: 00007fef33f5003b [ 182.364851][ T5781] [ 182.368208][ T5781] Kernel Offset: disabled [ 182.372592][ T5781] Rebooting in 86400 seconds..