./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3697381509 <...> Warning: Permanently added '10.128.0.190' (ED25519) to the list of known hosts. execve("./syz-executor3697381509", ["./syz-executor3697381509"], 0x7fff7060ad20 /* 10 vars */) = 0 brk(NULL) = 0x555558ad1000 brk(0x555558ad1d00) = 0x555558ad1d00 arch_prctl(ARCH_SET_FS, 0x555558ad1380) = 0 set_tid_address(0x555558ad1650) = 5047 set_robust_list(0x555558ad1660, 24) = 0 rseq(0x555558ad1ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3697381509", 4096) = 28 getrandom("\xe0\x71\xb6\xd3\xa6\x68\xb0\x83", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555558ad1d00 brk(0x555558af2d00) = 0x555558af2d00 brk(0x555558af3000) = 0x555558af3000 mprotect(0x7f70a7123000, 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=0x555558ad1650) = 5048 ./strace-static-x86_64: Process 5048 attached [pid 5048] set_robust_list(0x555558ad1660, 24) = 0 [pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5048] setpgid(0, 0) = 0 [pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5048] write(3, "1000", 4) = 4 [pid 5048] close(3executing program ) = 0 [pid 5048] write(1, "executing program\n", 18) = 18 [pid 5048] memfd_create("syzkaller", 0) = 3 [pid 5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f709ec00000 [pid 5048] 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 5048] munmap(0x7f709ec00000, 138412032) = 0 [pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5048] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5048] close(3) = 0 [pid 5048] close(4) = 0 [pid 5048] mkdir("./file0", 0777) = 0 [ 162.310086][ T5048] loop0: detected capacity change from 0 to 4096 [ 162.343725][ T5048] ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). [ 162.379708][ T5048] ntfs3: loop0: Mark volume as dirty due to NTFS errors [ 162.417573][ T5048] ntfs3: loop0: Failed to load $Extend (-22). [ 162.424050][ T5048] ntfs3: loop0: Failed to initialize $Extend. [pid 5048] mount("/dev/loop0", "./file0", "ntfs3", 0, "") = 0 [pid 5048] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5048] chdir("./file0") = 0 [pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5048] creat("./bus", 000) = 4 [ 162.450793][ T5048] ===================================================== [ 162.458154][ T5048] BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 [ 162.465671][ T5048] longest_match_std+0x5d9/0xe00 [ 162.470748][ T5048] compress_lznt+0x41f/0xef0 [ 162.475604][ T5048] ni_write_frame+0xf8f/0x1c80 [ 162.480501][ T5048] ntfs_compress_write+0x25ce/0x3c80 [ 162.485996][ T5048] ntfs_file_write_iter+0xa30/0xec0 [ 162.491335][ T5048] vfs_write+0xb2f/0x1550 [ 162.495940][ T5048] __x64_sys_pwrite64+0x2c5/0x3b0 [ 162.501155][ T5048] x64_sys_call+0xc26/0x3c10 [ 162.505975][ T5048] do_syscall_64+0xcd/0x1e0 [ 162.510685][ T5048] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.516929][ T5048] [ 162.519320][ T5048] Uninit was created at: [ 162.523827][ T5048] __alloc_pages_noprof+0x9d6/0xe70 [ 162.529218][ T5048] alloc_pages_mpol_noprof+0x299/0x990 [ 162.535090][ T5048] folio_alloc_noprof+0x1db/0x310 [ 162.540260][ T5048] filemap_alloc_folio_noprof+0xa6/0x440 [ 162.546115][ T5048] __filemap_get_folio+0xa05/0x14b0 [ 162.551466][ T5048] pagecache_get_page+0x4a/0x1a0 [ 162.556683][ T5048] ntfs_get_frame_pages+0xdc/0xa00 [ 162.561946][ T5048] ntfs_compress_write+0x1bdc/0x3c80 [ 162.567487][ T5048] ntfs_file_write_iter+0xa30/0xec0 [ 162.572836][ T5048] vfs_write+0xb2f/0x1550 [ 162.577428][ T5048] __x64_sys_pwrite64+0x2c5/0x3b0 [ 162.582624][ T5048] x64_sys_call+0xc26/0x3c10 [ 162.587436][ T5048] do_syscall_64+0xcd/0x1e0 [ 162.592107][ T5048] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.598317][ T5048] [ 162.600714][ T5048] CPU: 0 PID: 5048 Comm: syz-executor369 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 [ 162.611117][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 162.621380][ T5048] ===================================================== [ 162.628483][ T5048] Disabling lock debugging due to kernel taint [ 162.634783][ T5048] Kernel panic - not syncing: kmsan.panic set ... [ 162.641258][ T5048] CPU: 0 PID: 5048 Comm: syz-executor369 Tainted: G B 6.10.0-syzkaller-11185-g2c9b3512402e #0 [ 162.652986][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 162.663114][ T5048] Call Trace: [ 162.666447][ T5048] [ 162.669456][ T5048] dump_stack_lvl+0x216/0x2d0 [ 162.674319][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.680286][ T5048] dump_stack+0x1e/0x30 [ 162.684605][ T5048] panic+0x4e2/0xcd0 [ 162.688677][ T5048] ? kmsan_get_metadata+0xf1/0x1d0 [ 162.693927][ T5048] kmsan_report+0x2d5/0x2e0 [ 162.698546][ T5048] ? try_to_merge_one_page+0x11b4/0x2d30 [ 162.704277][ T5048] ? __msan_warning+0x95/0x120 [ 162.709143][ T5048] ? longest_match_std+0x5d9/0xe00 [ 162.714621][ T5048] ? compress_lznt+0x41f/0xef0 [ 162.719497][ T5048] ? ni_write_frame+0xf8f/0x1c80 [ 162.724510][ T5048] ? ntfs_compress_write+0x25ce/0x3c80 [ 162.730069][ T5048] ? ntfs_file_write_iter+0xa30/0xec0 [ 162.735531][ T5048] ? vfs_write+0xb2f/0x1550 [ 162.740138][ T5048] ? __x64_sys_pwrite64+0x2c5/0x3b0 [ 162.745448][ T5048] ? x64_sys_call+0xc26/0x3c10 [ 162.750404][ T5048] ? do_syscall_64+0xcd/0x1e0 [ 162.755188][ T5048] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.761383][ T5048] ? kmsan_get_shadow_origin_ptr+0x38/0xb0 [ 162.767324][ T5048] ? prep_new_page+0x35e/0x540 [ 162.772206][ T5048] ? get_page_from_freelist+0x1592/0x1610 [ 162.778052][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 162.783375][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.789330][ T5048] ? ___kmalloc_large_node+0x194/0x370 [ 162.794911][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 162.800228][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.806160][ T5048] __msan_warning+0x95/0x120 [ 162.810855][ T5048] longest_match_std+0x5d9/0xe00 [ 162.815977][ T5048] ? kmsan_metadata_is_contiguous+0xde/0x1e0 [ 162.822069][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 162.827484][ T5048] ? kmsan_metadata_is_contiguous+0xde/0x1e0 [ 162.833677][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 162.838999][ T5048] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 162.845458][ T5048] compress_lznt+0x41f/0xef0 [ 162.850133][ T5048] ? __pfx_longest_match_std+0x10/0x10 [ 162.855697][ T5048] ni_write_frame+0xf8f/0x1c80 [ 162.860551][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 162.865890][ T5048] ntfs_compress_write+0x25ce/0x3c80 [ 162.871350][ T5048] ntfs_file_write_iter+0xa30/0xec0 [ 162.876769][ T5048] vfs_write+0xb2f/0x1550 [ 162.881226][ T5048] ? uprobe_notify_resume+0x52b0/0x5330 [ 162.886881][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.892852][ T5048] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 162.898845][ T5048] __x64_sys_pwrite64+0x2c5/0x3b0 [ 162.904006][ T5048] x64_sys_call+0xc26/0x3c10 [ 162.908755][ T5048] do_syscall_64+0xcd/0x1e0 [ 162.913373][ T5048] ? clear_bhb_loop+0x25/0x80 [ 162.918191][ T5048] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.924216][ T5048] RIP: 0033:0x7f70a7090a99 [ 162.928712][ T5048] 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 [ 162.948433][ T5048] RSP: 002b:00007fffde8f82a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 162.956949][ T5048] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f70a7090a99 [ 162.964997][ T5048] RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000004 [ 162.973045][ T5048] RBP: 00007f70a71235f0 R08: 0000555558ad24c0 R09: 0000555558ad24c0 [ 162.981092][ T5048] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffde8f82d0 [ 162.989139][ T5048] R13: 00007fffde8f84f8 R14: 431bde82d7b634db R15: 00007f70a70d903b [ 162.997208][ T5048] [ 163.000408][ T5048] Kernel Offset: disabled [ 163.004784][ T5048] Rebooting in 86400 seconds..