./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor145597145 <...> Warning: Permanently added '10.128.1.115' (ED25519) to the list of known hosts. execve("./syz-executor145597145", ["./syz-executor145597145"], 0x7ffe2ab32520 /* 10 vars */) = 0 brk(NULL) = 0x55555dfa8000 brk(0x55555dfa8d00) = 0x55555dfa8d00 arch_prctl(ARCH_SET_FS, 0x55555dfa8380) = 0 set_tid_address(0x55555dfa8650) = 5186 set_robust_list(0x55555dfa8660, 24) = 0 rseq(0x55555dfa8ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor145597145", 4096) = 27 getrandom("\xe0\x60\x06\xfe\x21\xa4\x85\x02", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555dfa8d00 brk(0x55555dfc9d00) = 0x55555dfc9d00 brk(0x55555dfca000) = 0x55555dfca000 mprotect(0x7f4fafa1e000, 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=0x55555dfa8650) = 5187 ./strace-static-x86_64: Process 5187 attached [pid 5187] set_robust_list(0x55555dfa8660, 24) = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] write(1, "executing program\n", 18executing program ) = 18 [pid 5187] memfd_create("syzkaller", 0) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4fa7400000 [pid 5187] 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 5187] munmap(0x7f4fa7400000, 138412032) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5187] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5187] close(3) = 0 [pid 5187] close(4) = 0 [pid 5187] mkdir("./file0", 0777) = 0 [ 162.391830][ T5187] loop0: detected capacity change from 0 to 4096 [pid 5187] mount("/dev/loop0", "./file0", "ntfs3", 0, "") = 0 [pid 5187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./file0") = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5187] openat(AT_FDCWD, "cpu.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 162.499669][ T5187] ===================================================== [ 162.507032][ T5187] BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 [ 162.515070][ T5187] longest_match_std+0x5d9/0xe00 [ 162.520225][ T5187] compress_lznt+0x41f/0xef0 [ 162.525209][ T5187] ni_write_frame+0xf8f/0x1c80 [ 162.530088][ T5187] ntfs_compress_write+0x25cb/0x3c80 [ 162.535633][ T5187] ntfs_file_write_iter+0xa09/0xe90 [ 162.541164][ T5187] vfs_write+0xb28/0x1540 [ 162.545636][ T5187] ksys_write+0x24f/0x4c0 [ 162.550082][ T5187] __x64_sys_write+0x93/0xe0 [ 162.555020][ T5187] x64_sys_call+0x306a/0x3ba0 [ 162.559911][ T5187] do_syscall_64+0xcd/0x1e0 [ 162.564663][ T5187] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.570846][ T5187] [ 162.573210][ T5187] Uninit was created at: [ 162.577580][ T5187] __alloc_pages_noprof+0x9d6/0xe70 [ 162.583037][ T5187] alloc_pages_mpol_noprof+0x299/0x990 [ 162.588661][ T5187] folio_alloc_noprof+0x1db/0x310 [ 162.593923][ T5187] filemap_alloc_folio_noprof+0xa6/0x440 [ 162.599755][ T5187] __filemap_get_folio+0xac4/0x1550 [ 162.605197][ T5187] ntfs_get_frame_pages+0xd6/0x6b0 [ 162.610661][ T5187] ntfs_compress_write+0x1bd9/0x3c80 [ 162.616080][ T5187] ntfs_file_write_iter+0xa09/0xe90 [ 162.621544][ T5187] vfs_write+0xb28/0x1540 [ 162.626036][ T5187] ksys_write+0x24f/0x4c0 [ 162.630601][ T5187] __x64_sys_write+0x93/0xe0 [ 162.635373][ T5187] x64_sys_call+0x306a/0x3ba0 [ 162.640264][ T5187] do_syscall_64+0xcd/0x1e0 [ 162.645096][ T5187] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.651262][ T5187] [ 162.653681][ T5187] CPU: 0 UID: 0 PID: 5187 Comm: syz-executor145 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0 [ 162.664694][ T5187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 162.675063][ T5187] ===================================================== [ 162.682197][ T5187] Disabling lock debugging due to kernel taint [ 162.688452][ T5187] Kernel panic - not syncing: kmsan.panic set ... [ 162.694952][ T5187] CPU: 0 UID: 0 PID: 5187 Comm: syz-executor145 Tainted: G B 6.11.0-syzkaller-11993-g3efc57369a0c #0 [ 162.707315][ T5187] Tainted: [B]=BAD_PAGE [ 162.711608][ T5187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 162.721751][ T5187] Call Trace: [ 162.725121][ T5187] [ 162.728137][ T5187] dump_stack_lvl+0x216/0x2d0 [ 162.732927][ T5187] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.738837][ T5187] dump_stack+0x1e/0x30 [ 162.743100][ T5187] panic+0x4e2/0xcf0 [ 162.747105][ T5187] ? kmsan_get_metadata+0xf1/0x1c0 [ 162.752371][ T5187] kmsan_report+0x2c7/0x2d0 [ 162.757001][ T5187] ? __msan_warning+0x95/0x120 [ 162.761902][ T5187] ? longest_match_std+0x5d9/0xe00 [ 162.767127][ T5187] ? compress_lznt+0x41f/0xef0 [ 162.771998][ T5187] ? ni_write_frame+0xf8f/0x1c80 [ 162.777043][ T5187] ? ntfs_compress_write+0x25cb/0x3c80 [ 162.782621][ T5187] ? ntfs_file_write_iter+0xa09/0xe90 [ 162.788110][ T5187] ? vfs_write+0xb28/0x1540 [ 162.792744][ T5187] ? ksys_write+0x24f/0x4c0 [ 162.797418][ T5187] ? __x64_sys_write+0x93/0xe0 [ 162.802280][ T5187] ? x64_sys_call+0x306a/0x3ba0 [ 162.807241][ T5187] ? do_syscall_64+0xcd/0x1e0 [ 162.812020][ T5187] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.818223][ T5187] ? kmsan_get_shadow_origin_ptr+0x38/0xb0 [ 162.824126][ T5187] ? prep_new_page+0x35e/0x540 [ 162.828992][ T5187] ? get_page_from_freelist+0x157f/0x1600 [ 162.834827][ T5187] ? kmsan_get_metadata+0x13e/0x1c0 [ 162.840120][ T5187] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.846041][ T5187] ? ___kmalloc_large_node+0x194/0x370 [ 162.851619][ T5187] ? kmsan_get_metadata+0x13e/0x1c0 [ 162.856928][ T5187] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 162.862850][ T5187] __msan_warning+0x95/0x120 [ 162.867568][ T5187] longest_match_std+0x5d9/0xe00 [ 162.872652][ T5187] compress_lznt+0x41f/0xef0 [ 162.877360][ T5187] ? __pfx_longest_match_std+0x10/0x10 [ 162.883038][ T5187] ni_write_frame+0xf8f/0x1c80 [ 162.888010][ T5187] ? kmsan_get_metadata+0x13e/0x1c0 [ 162.893330][ T5187] ntfs_compress_write+0x25cb/0x3c80 [ 162.898786][ T5187] ntfs_file_write_iter+0xa09/0xe90 [ 162.904119][ T5187] vfs_write+0xb28/0x1540 [ 162.908593][ T5187] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 162.914449][ T5187] ksys_write+0x24f/0x4c0 [ 162.918904][ T5187] __x64_sys_write+0x93/0xe0 [ 162.923604][ T5187] x64_sys_call+0x306a/0x3ba0 [ 162.928425][ T5187] do_syscall_64+0xcd/0x1e0 [ 162.933101][ T5187] ? clear_bhb_loop+0x25/0x80 [ 162.937888][ T5187] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 162.943926][ T5187] RIP: 0033:0x7f4faf98aad9 [ 162.948418][ T5187] 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 [ 162.968149][ T5187] RSP: 002b:00007ffd95379058 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 162.976669][ T5187] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4faf98aad9 [ 162.984754][ T5187] RDX: 0000000000001006 RSI: 0000000020000940 RDI: 0000000000000004 [ 162.992859][ T5187] RBP: 00007f4fafa1e5f0 R08: 000055555dfa94c0 R09: 000055555dfa94c0 [ 163.000918][ T5187] R10: 000000000001f739 R11: 0000000000000246 R12: 00007ffd95379080 [ 163.008978][ T5187] R13: 00007ffd953792a8 R14: 431bde82d7b634db R15: 00007f4faf9d303b [ 163.017080][ T5187] [ 163.020526][ T5187] Kernel Offset: disabled [ 163.025007][ T5187] Rebooting in 86400 seconds..