./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1355870386 <...> Warning: Permanently added '10.128.0.223' (ED25519) to the list of known hosts. execve("./syz-executor1355870386", ["./syz-executor1355870386"], 0x7fffb0a4c980 /* 10 vars */) = 0 brk(NULL) = 0x555591740000 brk(0x555591740d00) = 0x555591740d00 arch_prctl(ARCH_SET_FS, 0x555591740380) = 0 set_tid_address(0x555591740650) = 5057 set_robust_list(0x555591740660, 24) = 0 rseq(0x555591740ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1355870386", 4096) = 28 getrandom("\xf1\x14\x25\x89\x41\x74\x9f\xb6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555591740d00 brk(0x555591761d00) = 0x555591761d00 brk(0x555591762000) = 0x555591762000 mprotect(0x7f88bc217000, 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=0x555591740650) = 5058 ./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x555591740660, 24) = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] setpgid(0, 0) = 0 [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5058] close(3executing program ) = 0 [pid 5058] write(1, "executing program\n", 18) = 18 [pid 5058] memfd_create("syzkaller", 0) = 3 [pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f88b3c00000 [pid 5058] 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 5058] munmap(0x7f88b3c00000, 138412032) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5058] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5058] close(3) = 0 [pid 5058] close(4) = 0 [pid 5058] mkdir("./file0", 0777) = 0 [ 192.410462][ T5058] loop0: detected capacity change from 0 to 4096 [ 192.448758][ T5058] ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). [pid 5058] mount("/dev/loop0", "./file0", "ntfs3", 0, "") = 0 [pid 5058] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5058] chdir("./file0") = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 192.488925][ T5058] ntfs3: loop0: Mark volume as dirty due to NTFS errors [pid 5058] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 192.558525][ T5058] ===================================================== [ 192.566868][ T5058] BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 [ 192.574663][ T5058] longest_match_std+0x5d9/0xe00 [ 192.579787][ T5058] compress_lznt+0x41f/0xef0 [ 192.584686][ T5058] ni_write_frame+0xf8f/0x1c80 [ 192.589911][ T5058] ntfs_compress_write+0x25ce/0x3c80 [ 192.595535][ T5058] ntfs_file_write_iter+0xa30/0xec0 [ 192.600954][ T5058] vfs_write+0xb2f/0x1550 [ 192.605635][ T5058] ksys_write+0x20f/0x4c0 [ 192.610171][ T5058] __x64_sys_write+0x93/0xe0 [ 192.615047][ T5058] x64_sys_call+0x3490/0x3c10 [ 192.619938][ T5058] do_syscall_64+0xcd/0x1e0 [ 192.624766][ T5058] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 192.630932][ T5058] [ 192.633462][ T5058] Uninit was created at: [ 192.637915][ T5058] __alloc_pages_noprof+0x9d6/0xe70 [ 192.643493][ T5058] alloc_pages_mpol_noprof+0x299/0x990 [ 192.649149][ T5058] folio_alloc_noprof+0x1db/0x310 [ 192.654437][ T5058] filemap_alloc_folio_noprof+0xa6/0x440 [ 192.661226][ T5058] __filemap_get_folio+0xa05/0x14b0 [ 192.666783][ T5058] pagecache_get_page+0x4a/0x1a0 [ 192.671995][ T5058] ntfs_get_frame_pages+0xdc/0xa00 [ 192.677295][ T5058] ntfs_compress_write+0x1bdc/0x3c80 [ 192.682879][ T5058] ntfs_file_write_iter+0xa30/0xec0 [ 192.688261][ T5058] vfs_write+0xb2f/0x1550 [ 192.692886][ T5058] ksys_write+0x20f/0x4c0 [ 192.697443][ T5058] __x64_sys_write+0x93/0xe0 [ 192.702366][ T5058] x64_sys_call+0x3490/0x3c10 [ 192.707286][ T5058] do_syscall_64+0xcd/0x1e0 [ 192.712213][ T5058] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 192.718387][ T5058] [ 192.720812][ T5058] CPU: 1 PID: 5058 Comm: syz-executor135 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 [ 192.731237][ T5058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 192.741659][ T5058] ===================================================== [ 192.748705][ T5058] Disabling lock debugging due to kernel taint [ 192.755112][ T5058] Kernel panic - not syncing: kmsan.panic set ... [ 192.761677][ T5058] CPU: 1 PID: 5058 Comm: syz-executor135 Tainted: G B 6.10.0-syzkaller-11185-g2c9b3512402e #0 [ 192.773474][ T5058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 192.783649][ T5058] Call Trace: [ 192.787046][ T5058] [ 192.790103][ T5058] dump_stack_lvl+0x216/0x2d0 [ 192.794952][ T5058] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 192.801027][ T5058] dump_stack+0x1e/0x30 [ 192.805371][ T5058] panic+0x4e2/0xcd0 [ 192.809436][ T5058] ? kmsan_get_metadata+0xf1/0x1d0 [ 192.814824][ T5058] kmsan_report+0x2d5/0x2e0 [ 192.819591][ T5058] ? __msan_warning+0x95/0x120 [ 192.824531][ T5058] ? longest_match_std+0x5d9/0xe00 [ 192.829765][ T5058] ? compress_lznt+0x41f/0xef0 [ 192.834653][ T5058] ? ni_write_frame+0xf8f/0x1c80 [ 192.839707][ T5058] ? ntfs_compress_write+0x25ce/0x3c80 [ 192.845317][ T5058] ? ntfs_file_write_iter+0xa30/0xec0 [ 192.850932][ T5058] ? vfs_write+0xb2f/0x1550 [ 192.855663][ T5058] ? ksys_write+0x20f/0x4c0 [ 192.860313][ T5058] ? __x64_sys_write+0x93/0xe0 [ 192.865397][ T5058] ? x64_sys_call+0x3490/0x3c10 [ 192.870396][ T5058] ? do_syscall_64+0xcd/0x1e0 [ 192.875304][ T5058] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 192.881551][ T5058] ? prep_new_page+0x35e/0x540 [ 192.886472][ T5058] ? get_page_from_freelist+0x1592/0x1610 [ 192.892362][ T5058] ? kmsan_get_metadata+0x146/0x1d0 [ 192.897764][ T5058] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 192.903763][ T5058] ? ___kmalloc_large_node+0x194/0x370 [ 192.909386][ T5058] ? kmsan_get_metadata+0x146/0x1d0 [ 192.914779][ T5058] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 192.920846][ T5058] __msan_warning+0x95/0x120 [ 192.925622][ T5058] longest_match_std+0x5d9/0xe00 [ 192.930740][ T5058] ? kmsan_metadata_is_contiguous+0xde/0x1e0 [ 192.936909][ T5058] ? kmsan_get_metadata+0x146/0x1d0 [ 192.942373][ T5058] compress_lznt+0x41f/0xef0 [ 192.947087][ T5058] ? __pfx_longest_match_std+0x10/0x10 [ 192.952701][ T5058] ni_write_frame+0xf8f/0x1c80 [ 192.957594][ T5058] ? kmsan_get_metadata+0x146/0x1d0 [ 192.962973][ T5058] ntfs_compress_write+0x25ce/0x3c80 [ 192.968439][ T5058] ntfs_file_write_iter+0xa30/0xec0 [ 192.973773][ T5058] vfs_write+0xb2f/0x1550 [ 192.978264][ T5058] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 192.984129][ T5058] ksys_write+0x20f/0x4c0 [ 192.988612][ T5058] __x64_sys_write+0x93/0xe0 [ 192.993349][ T5058] x64_sys_call+0x3490/0x3c10 [ 192.998175][ T5058] do_syscall_64+0xcd/0x1e0 [ 193.002915][ T5058] ? clear_bhb_loop+0x25/0x80 [ 193.007714][ T5058] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 193.013783][ T5058] RIP: 0033:0x7f88bc183dd9 [ 193.018337][ T5058] 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 [ 193.038173][ T5058] RSP: 002b:00007fff7088e668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 193.046768][ T5058] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f88bc183dd9 [ 193.054881][ T5058] RDX: 0000000000000013 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 193.062955][ T5058] RBP: 00007f88bc2175f0 R08: 00005555917414c0 R09: 00005555917414c0 [ 193.071039][ T5058] R10: 000000000001f44e R11: 0000000000000246 R12: 00007fff7088e690 [ 193.079114][ T5058] R13: 00007fff7088e8b8 R14: 431bde82d7b634db R15: 00007f88bc1cd03b [ 193.087260][ T5058] [ 193.090728][ T5058] Kernel Offset: disabled [ 193.095149][ T5058] Rebooting in 86400 seconds..