./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2276127572 <...> Warning: Permanently added '10.128.0.104' (ED25519) to the list of known hosts. execve("./syz-executor2276127572", ["./syz-executor2276127572"], 0x7fff63e59ca0 /* 10 vars */) = 0 brk(NULL) = 0x555557513000 brk(0x555557513d00) = 0x555557513d00 arch_prctl(ARCH_SET_FS, 0x555557513380) = 0 set_tid_address(0x555557513650) = 4998 set_robust_list(0x555557513660, 24) = 0 rseq(0x555557513ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2276127572", 4096) = 28 getrandom("\xa4\xd0\xd6\xc3\x87\xb5\xdd\xe1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557513d00 brk(0x555557534d00) = 0x555557534d00 brk(0x555557535000) = 0x555557535000 mprotect(0x7f99b0d73000, 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=0x555557513650) = 4999 ./strace-static-x86_64: Process 4999 attached [pid 4999] set_robust_list(0x555557513660, 24) = 0 [pid 4999] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4999] setpgid(0, 0) = 0 [pid 4999] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4999] write(3, "1000", 4) = 4 [pid 4999] close(3) = 0 [pid 4999] memfd_create("syzkaller", 0) = 3 [pid 4999] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f99a88a2000 [pid 4999] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x08\x01\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\x03\x00\x00\x00\x00\x00\x00\xff\x01\x00\x00\x00\x00\x00\x00\xff\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\xbb\x02\x87\x1c\xc7\xbb\xb3\x5e\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 4999] munmap(0x7f99a88a2000, 138412032) = 0 [pid 4999] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 4999] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 4999] close(3) = 0 [pid 4999] mkdir("./file1", 0777) = 0 [ 139.513178][ T4999] loop0: detected capacity change from 0 to 4096 [ 139.533256][ T4999] ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). [ 139.561288][ T4999] ntfs3: loop0: Mark volume as dirty due to NTFS errors [pid 4999] mount("/dev/loop0", "./file1", "ntfs3", MS_NOEXEC|MS_SYNCHRONOUS|MS_REC|MS_STRICTATIME, "") = 0 [pid 4999] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 4999] chdir("./file1") = 0 [pid 4999] ioctl(4, LOOP_CLR_FD) = 0 [pid 4999] close(4) = 0 [pid 4999] creat("./bus", 000) = 4 [ 139.597261][ T4999] ntfs3: loop0: Failed to initialize $Extend/$ObjId. [ 139.637693][ T4999] ===================================================== [ 139.644981][ T4999] BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 [ 139.652434][ T4999] longest_match_std+0x5d9/0xe00 [ 139.657712][ T4999] compress_lznt+0x41b/0xef0 [ 139.662467][ T4999] ni_write_frame+0xf89/0x1c80 [ 139.667573][ T4999] ntfs_compress_write+0x2521/0x3b70 [ 139.673042][ T4999] ntfs_file_write_iter+0x89b/0xd30 [ 139.678570][ T4999] vfs_write+0x8ef/0x1490 [ 139.683035][ T4999] ksys_write+0x20f/0x4c0 [ 139.687598][ T4999] __x64_sys_write+0x93/0xd0 [ 139.692328][ T4999] do_syscall_64+0x44/0x110 [ 139.697271][ T4999] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.703489][ T4999] [ 139.705890][ T4999] Uninit was created at: [ 139.710355][ T4999] __alloc_pages+0x9a4/0xe00 [ 139.715228][ T4999] alloc_pages_mpol+0x62b/0x9d0 [ 139.720230][ T4999] folio_alloc+0x1da/0x380 [ 139.724890][ T4999] filemap_alloc_folio+0xa5/0x430 [ 139.730069][ T4999] __filemap_get_folio+0xa5a/0x1760 [ 139.735552][ T4999] pagecache_get_page+0x4a/0x1a0 [ 139.740662][ T4999] ntfs_get_frame_pages+0xdc/0x9f0 [ 139.746087][ T4999] ntfs_compress_write+0x1b0b/0x3b70 [ 139.751547][ T4999] ntfs_file_write_iter+0x89b/0xd30 [ 139.757123][ T4999] vfs_write+0x8ef/0x1490 [ 139.761584][ T4999] ksys_write+0x20f/0x4c0 [ 139.766540][ T4999] __x64_sys_write+0x93/0xd0 [ 139.771251][ T4999] do_syscall_64+0x44/0x110 [ 139.775991][ T4999] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.782064][ T4999] [ 139.784681][ T4999] CPU: 0 PID: 4999 Comm: syz-executor227 Not tainted 6.7.0-rc8-syzkaller #0 [ 139.795567][ T4999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 139.805855][ T4999] ===================================================== [ 139.812862][ T4999] Disabling lock debugging due to kernel taint [ 139.819199][ T4999] Kernel panic - not syncing: kmsan.panic set ... [ 139.825714][ T4999] CPU: 0 PID: 4999 Comm: syz-executor227 Tainted: G B 6.7.0-rc8-syzkaller #0 [ 139.836027][ T4999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 139.846182][ T4999] Call Trace: [ 139.849543][ T4999] [ 139.852527][ T4999] dump_stack_lvl+0x1bf/0x240 [ 139.857378][ T4999] dump_stack+0x1e/0x20 [ 139.861705][ T4999] panic+0x4de/0xc90 [ 139.865808][ T4999] ? add_taint+0x108/0x1a0 [ 139.870392][ T4999] kmsan_report+0x2d0/0x2d0 [ 139.875088][ T4999] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 139.881526][ T4999] ? __msan_warning+0x96/0x110 [ 139.886442][ T4999] ? longest_match_std+0x5d9/0xe00 [ 139.891660][ T4999] ? compress_lznt+0x41b/0xef0 [ 139.896575][ T4999] ? ni_write_frame+0xf89/0x1c80 [ 139.901671][ T4999] ? ntfs_compress_write+0x2521/0x3b70 [ 139.907255][ T4999] ? ntfs_file_write_iter+0x89b/0xd30 [ 139.912820][ T4999] ? vfs_write+0x8ef/0x1490 [ 139.917460][ T4999] ? ksys_write+0x20f/0x4c0 [ 139.922102][ T4999] ? __x64_sys_write+0x93/0xd0 [ 139.926991][ T4999] ? do_syscall_64+0x44/0x110 [ 139.931766][ T4999] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.937964][ T4999] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 139.943900][ T4999] ? kmsan_get_shadow_origin_ptr+0x38/0xa0 [ 139.949877][ T4999] ? prep_new_page+0x30c/0x4e0 [ 139.954859][ T4999] ? get_page_from_freelist+0x1578/0x15f0 [ 139.960799][ T4999] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.966800][ T4999] __msan_warning+0x96/0x110 [ 139.971570][ T4999] longest_match_std+0x5d9/0xe00 [ 139.976707][ T4999] compress_lznt+0x41b/0xef0 [ 139.981448][ T4999] ? compress_lznt+0xef0/0xef0 [ 139.986321][ T4999] ni_write_frame+0xf89/0x1c80 [ 139.991246][ T4999] ntfs_compress_write+0x2521/0x3b70 [ 139.996741][ T4999] ntfs_file_write_iter+0x89b/0xd30 [ 140.002086][ T4999] ? ntfs_file_read_iter+0x410/0x410 [ 140.007538][ T4999] vfs_write+0x8ef/0x1490 [ 140.011960][ T4999] ksys_write+0x20f/0x4c0 [ 140.016377][ T4999] __x64_sys_write+0x93/0xd0 [ 140.021092][ T4999] do_syscall_64+0x44/0x110 [ 140.025779][ T4999] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 140.031949][ T4999] RIP: 0033:0x7f99b0ce0a59 [ 140.036486][ T4999] 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 [ 140.056458][ T4999] RSP: 002b:00007ffde2424168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 140.065036][ T4999] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f99b0ce0a59 [ 140.073147][ T4999] RDX: 0000000000001001 RSI: 0000000020000a40 RDI: 0000000000000004 [ 140.081233][ T4999] RBP: 00007f99b0d735f0 R08: 00005555575144c0 R09: 00005555575144c0 [ 140.089284][ T4999] R10: 000000000001f412 R11: 0000000000000246 R12: 00007ffde2424190 [ 140.097353][ T4999] R13: 00007ffde24243b8 R14: 431bde82d7b634db R15: 00007f99b0d2903b [ 140.105485][ T4999] [ 140.108858][ T4999] Kernel Offset: disabled [ 140.113232][ T4999] Rebooting in 86400 seconds..