./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor197061376 <...> Warning: Permanently added '10.128.1.92' (ED25519) to the list of known hosts. execve("./syz-executor197061376", ["./syz-executor197061376"], 0x7ffc59239f40 /* 10 vars */) = 0 brk(NULL) = 0x55556b4d9000 brk(0x55556b4d9d00) = 0x55556b4d9d00 arch_prctl(ARCH_SET_FS, 0x55556b4d9380) = 0 set_tid_address(0x55556b4d9650) = 5022 set_robust_list(0x55556b4d9660, 24) = 0 rseq(0x55556b4d9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor197061376", 4096) = 27 getrandom("\x48\x58\x87\xd9\x46\xb6\x0d\x0b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556b4d9d00 brk(0x55556b4fad00) = 0x55556b4fad00 brk(0x55556b4fb000) = 0x55556b4fb000 mprotect(0x7f287400f000, 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=0x55556b4d9650) = 5023 ./strace-static-x86_64: Process 5023 attached [pid 5023] set_robust_list(0x55556b4d9660, 24) = 0 [pid 5023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5023] setpgid(0, 0) = 0 [pid 5023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5023] write(3, "1000", 4) = 4 [pid 5023] close(3) = 0 [pid 5023] memfd_create("syzkaller", 0) = 3 [pid 5023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f286ba00000 [pid 5023] 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 5023] munmap(0x7f286ba00000, 138412032) = 0 [pid 5023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5023] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5023] close(3) = 0 [pid 5023] close(4) = 0 [pid 5023] mkdir("./file0", 0777) = 0 [ 161.536041][ T5023] loop0: detected capacity change from 0 to 4096 [ 161.564668][ T5023] ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). [pid 5023] mount("/dev/loop0", "./file0", "ntfs3", MS_POSIXACL, "") = 0 [pid 5023] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5023] chdir("./file0") = 0 [pid 5023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 161.607096][ T5023] ntfs3: loop0: Mark volume as dirty due to NTFS errors [pid 5023] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 161.692823][ T5023] ===================================================== [ 161.700162][ T5023] BUG: KMSAN: uninit-value in longest_match_std+0x56b/0xe00 [ 161.707828][ T5023] longest_match_std+0x56b/0xe00 [ 161.712976][ T5023] compress_lznt+0x41f/0xef0 [ 161.718039][ T5023] ni_write_frame+0xf8f/0x1c80 [ 161.723029][ T5023] ntfs_compress_write+0x25ce/0x3c80 [ 161.728639][ T5023] ntfs_file_write_iter+0xa30/0xec0 [ 161.734018][ T5023] vfs_write+0xb63/0x1520 [ 161.738596][ T5023] ksys_write+0x20f/0x4c0 [ 161.743131][ T5023] __x64_sys_write+0x93/0xe0 [ 161.748164][ T5023] x64_sys_call+0x3062/0x3b50 [ 161.753025][ T5023] do_syscall_64+0xcf/0x1e0 [ 161.758694][ T5023] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 161.764848][ T5023] [ 161.767451][ T5023] Uninit was created at: [ 161.771860][ T5023] __alloc_pages+0x9d6/0xe70 [ 161.776664][ T5023] alloc_pages_mpol+0x299/0x990 [ 161.781705][ T5023] folio_alloc+0x1d0/0x230 [ 161.786282][ T5023] filemap_alloc_folio+0xa6/0x440 [ 161.791615][ T5023] __filemap_get_folio+0xa10/0x14b0 [ 161.797114][ T5023] pagecache_get_page+0x4a/0x1a0 [ 161.802193][ T5023] ntfs_get_frame_pages+0xdc/0xa00 [ 161.807701][ T5023] ntfs_compress_write+0x1bdc/0x3c80 [ 161.813206][ T5023] ntfs_file_write_iter+0xa30/0xec0 [ 161.818753][ T5023] vfs_write+0xb63/0x1520 [ 161.823277][ T5023] ksys_write+0x20f/0x4c0 [ 161.828002][ T5023] __x64_sys_write+0x93/0xe0 [ 161.832802][ T5023] x64_sys_call+0x3062/0x3b50 [ 161.837786][ T5023] do_syscall_64+0xcf/0x1e0 [ 161.842455][ T5023] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 161.848746][ T5023] [ 161.851176][ T5023] CPU: 0 PID: 5023 Comm: syz-executor197 Not tainted 6.9.0-rc3-syzkaller-00073-ge8c39d0f57f3 #0 [ 161.861877][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 161.872178][ T5023] ===================================================== [ 161.879298][ T5023] Disabling lock debugging due to kernel taint [ 161.885576][ T5023] Kernel panic - not syncing: kmsan.panic set ... [ 161.892112][ T5023] CPU: 0 PID: 5023 Comm: syz-executor197 Tainted: G B 6.9.0-rc3-syzkaller-00073-ge8c39d0f57f3 #0 [ 161.904207][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 161.914391][ T5023] Call Trace: [ 161.917755][ T5023] [ 161.920811][ T5023] dump_stack_lvl+0x216/0x2d0 [ 161.925595][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 161.931544][ T5023] dump_stack+0x1e/0x30 [ 161.935858][ T5023] panic+0x4e2/0xcd0 [ 161.939974][ T5023] ? kmsan_get_metadata+0x51/0x1d0 [ 161.945258][ T5023] kmsan_report+0x2d5/0x2e0 [ 161.949870][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 161.955811][ T5023] ? io_uring_show_fdinfo+0x2984/0x2e80 [ 161.961561][ T5023] ? __msan_warning+0x95/0x120 [ 161.966484][ T5023] ? longest_match_std+0x56b/0xe00 [ 161.971796][ T5023] ? compress_lznt+0x41f/0xef0 [ 161.976754][ T5023] ? ni_write_frame+0xf8f/0x1c80 [ 161.981813][ T5023] ? ntfs_compress_write+0x25ce/0x3c80 [ 161.987422][ T5023] ? ntfs_file_write_iter+0xa30/0xec0 [ 161.992988][ T5023] ? vfs_write+0xb63/0x1520 [ 161.997613][ T5023] ? ksys_write+0x20f/0x4c0 [ 162.002240][ T5023] ? __x64_sys_write+0x93/0xe0 [ 162.007132][ T5023] ? x64_sys_call+0x3062/0x3b50 [ 162.012140][ T5023] ? do_syscall_64+0xcf/0x1e0 [ 162.017080][ T5023] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.023394][ T5023] ? stack_depot_save_flags+0x2c/0x6e0 [ 162.029062][ T5023] ? kmsan_get_metadata+0x146/0x1d0 [ 162.034392][ T5023] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 162.040850][ T5023] ? kmsan_internal_poison_memory+0x7d/0x90 [ 162.046902][ T5023] ? kmsan_internal_poison_memory+0x49/0x90 [ 162.053002][ T5023] ? kmsan_slab_free+0xd6/0x140 [ 162.058097][ T5023] ? kfree+0x20c/0xa30 [ 162.062362][ T5023] ? kmsan_get_metadata+0x146/0x1d0 [ 162.067720][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.073671][ T5023] ? __vmap_pages_range_noflush+0xfa9/0x18c0 [ 162.079881][ T5023] ? filter_irq_stacks+0x60/0x1a0 [ 162.085154][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.091172][ T5023] __msan_warning+0x95/0x120 [ 162.095935][ T5023] longest_match_std+0x56b/0xe00 [ 162.101133][ T5023] compress_lznt+0x41f/0xef0 [ 162.105963][ T5023] ? __pfx_longest_match_std+0x10/0x10 [ 162.111753][ T5023] ni_write_frame+0xf8f/0x1c80 [ 162.116772][ T5023] ntfs_compress_write+0x25ce/0x3c80 [ 162.122314][ T5023] ntfs_file_write_iter+0xa30/0xec0 [ 162.127657][ T5023] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 162.133596][ T5023] vfs_write+0xb63/0x1520 [ 162.138116][ T5023] ksys_write+0x20f/0x4c0 [ 162.142588][ T5023] __x64_sys_write+0x93/0xe0 [ 162.147358][ T5023] x64_sys_call+0x3062/0x3b50 [ 162.152185][ T5023] do_syscall_64+0xcf/0x1e0 [ 162.156789][ T5023] ? clear_bhb_loop+0x25/0x80 [ 162.161569][ T5023] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.167644][ T5023] RIP: 0033:0x7f2873f7ca99 [ 162.172226][ T5023] 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 [ 162.192077][ T5023] RSP: 002b:00007fffe73d2fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 162.200672][ T5023] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2873f7ca99 [ 162.208764][ T5023] RDX: 000000000000fcb8 RSI: 0000000020000140 RDI: 0000000000000004 [ 162.216863][ T5023] RBP: 00007f287400f5f0 R08: 000055556b4da4c0 R09: 000055556b4da4c0 [ 162.224953][ T5023] R10: 000000000001f459 R11: 0000000000000246 R12: 00007fffe73d2ff0 [ 162.233129][ T5023] R13: 00007fffe73d3218 R14: 431bde82d7b634db R15: 00007f2873fc503b [ 162.241302][ T5023] [ 162.244675][ T5023] Kernel Offset: disabled [ 162.249109][ T5023] Rebooting in 86400 seconds..