./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor256522499 <...> Warning: Permanently added '10.128.0.55' (ED25519) to the list of known hosts. execve("./syz-executor256522499", ["./syz-executor256522499"], 0x7ffd41621050 /* 10 vars */) = 0 brk(NULL) = 0x555576342000 brk(0x555576342d00) = 0x555576342d00 arch_prctl(ARCH_SET_FS, 0x555576342380) = 0 set_tid_address(0x555576342650) = 5778 set_robust_list(0x555576342660, 24) = 0 rseq(0x555576342ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor256522499", 4096) = 27 getrandom("\x47\x80\x53\x8a\xbb\xdd\x12\x88", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555576342d00 brk(0x555576363d00) = 0x555576363d00 brk(0x555576364000) = 0x555576364000 mprotect(0x7f73b0d21000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 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=0x555576342650) = 5779 ./strace-static-x86_64: Process 5779 attached [pid 5779] set_robust_list(0x555576342660, 24) = 0 [pid 5779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5779] setpgid(0, 0) = 0 [pid 5779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5779] write(3, "1000", 4) = 4 [pid 5779] close(3executing program ) = 0 [pid 5779] write(1, "executing program\n", 18) = 18 [pid 5779] memfd_create("syzkaller", 0) = 3 [pid 5779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f73a8800000 [pid 5779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 [pid 5779] munmap(0x7f73a8800000, 138412032) = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5779] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5779] close(3) = 0 [pid 5779] close(4) = 0 [pid 5779] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 [pid 5779] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "hfsplus", 0, "\x6e\x6f\x62\x61\x72\x72\x69\x65\x72\x2c\x70\x61\x72\x74\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x39\x2c\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x30\x30\x30\x2c\x6e\x6c\x73\x3d\x64\x65\x66\x61\x75\x6c\x74\x2c\x74\x79\x70\x65\x3d\xf2\x68\xd6\x51\x2c\x6e\x6f\x64\x65\x63\x6f\x6d\x70\x6f\x73\x65\x2c") = 0 [ 219.694780][ T5779] loop0: detected capacity change from 0 to 1024 [pid 5779] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3 [pid 5779] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5779] openat(AT_FDCWD, ".", O_RDONLY) = 4 [pid 5779] mkdirat(4, "./bus", 000) = 0 [ 219.781480][ T5779] ===================================================== [ 219.788832][ T5779] BUG: KMSAN: uninit-value in hfsplus_rename_cat+0x10e5/0x16f0 [ 219.796706][ T5779] hfsplus_rename_cat+0x10e5/0x16f0 [ 219.802249][ T5779] hfsplus_rename+0x209/0x2e0 [ 219.807095][ T5779] vfs_rename+0x1d9d/0x2280 [ 219.811772][ T5779] do_renameat2+0x18d0/0x1d50 [ 219.816818][ T5779] __x64_sys_renameat2+0x154/0x1f0 [ 219.822245][ T5779] x64_sys_call+0x204b/0x3c30 [ 219.827127][ T5779] do_syscall_64+0xcd/0x1e0 [ 219.831800][ T5779] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 219.838192][ T5779] [ 219.840613][ T5779] Uninit was stored to memory at: [ 219.846037][ T5779] hfsplus_create_cat+0x17f6/0x1800 [ 219.851455][ T5779] hfsplus_mknod+0x201/0x560 [ 219.856395][ T5779] hfsplus_mkdir+0x58/0x70 [ 219.860990][ T5779] vfs_mkdir+0x4a0/0x780 [ 219.865637][ T5779] do_mkdirat+0x529/0x820 [ 219.870208][ T5779] __x64_sys_mkdirat+0xc6/0x120 [ 219.875360][ T5779] x64_sys_call+0x1fad/0x3c30 [ 219.880238][ T5779] do_syscall_64+0xcd/0x1e0 [ 219.885039][ T5779] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 219.891174][ T5779] [ 219.893810][ T5779] Uninit was stored to memory at: [ 219.899047][ T5779] hfsplus_create_cat+0x17f6/0x1800 [ 219.904566][ T5779] hfsplus_fill_super+0x2236/0x26e0 [ 219.910030][ T5779] get_tree_bdev_flags+0x6ec/0x910 [ 219.915461][ T5779] get_tree_bdev+0x37/0x50 [ 219.920084][ T5779] hfsplus_get_tree+0x34/0x40 [ 219.925153][ T5779] vfs_get_tree+0xb1/0x5a0 [ 219.929789][ T5779] do_new_mount+0x71f/0x15e0 [ 219.934681][ T5779] path_mount+0x742/0x1f10 [ 219.939329][ T5779] __se_sys_mount+0x71f/0x800 [ 219.944331][ T5779] __x64_sys_mount+0xe4/0x150 [ 219.949263][ T5779] x64_sys_call+0x39bf/0x3c30 [ 219.954353][ T5779] do_syscall_64+0xcd/0x1e0 [ 219.959075][ T5779] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 219.965313][ T5779] [ 219.967748][ T5779] Uninit was created at: [ 219.972399][ T5779] __alloc_frozen_pages_noprof+0x9a7/0xe00 [ 219.978474][ T5779] alloc_pages_mpol+0x4cd/0x890 [ 219.983634][ T5779] alloc_frozen_pages_noprof+0x1bf/0x1e0 [ 219.989531][ T5779] allocate_slab+0x23a/0x1110 [ 219.994562][ T5779] ___slab_alloc+0x1287/0x3540 [ 219.999550][ T5779] kmem_cache_alloc_lru_noprof+0x855/0xe20 [ 220.005650][ T5779] hfsplus_alloc_inode+0x5a/0xd0 [ 220.010853][ T5779] alloc_inode+0x86/0x460 [ 220.015539][ T5779] iget_locked+0x250/0x1290 [ 220.020216][ T5779] hfsplus_iget+0x59/0xae0 [ 220.024949][ T5779] hfsplus_btree_open+0x13e/0x1ed0 [ 220.030262][ T5779] hfsplus_fill_super+0x1113/0x26e0 [ 220.035776][ T5779] get_tree_bdev_flags+0x6ec/0x910 [ 220.041111][ T5779] get_tree_bdev+0x37/0x50 [ 220.045890][ T5779] hfsplus_get_tree+0x34/0x40 [ 220.050793][ T5779] vfs_get_tree+0xb1/0x5a0 [ 220.055581][ T5779] do_new_mount+0x71f/0x15e0 [ 220.060405][ T5779] path_mount+0x742/0x1f10 [ 220.065132][ T5779] __se_sys_mount+0x71f/0x800 [ 220.070064][ T5779] __x64_sys_mount+0xe4/0x150 [ 220.075205][ T5779] x64_sys_call+0x39bf/0x3c30 [ 220.080080][ T5779] do_syscall_64+0xcd/0x1e0 [ 220.084894][ T5779] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.091025][ T5779] [ 220.093732][ T5779] CPU: 1 UID: 0 PID: 5779 Comm: syz-executor256 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0 [ 220.105170][ T5779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 220.115509][ T5779] ===================================================== [ 220.122772][ T5779] Disabling lock debugging due to kernel taint [ 220.129090][ T5779] Kernel panic - not syncing: kmsan.panic set ... [ 220.135659][ T5779] CPU: 1 UID: 0 PID: 5779 Comm: syz-executor256 Tainted: G B 6.14.0-rc7-syzkaller-00205-g586de92313fc #0 [ 220.148434][ T5779] Tainted: [B]=BAD_PAGE [ 220.152704][ T5779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 220.163151][ T5779] Call Trace: [ 220.166581][ T5779] [ 220.169606][ T5779] dump_stack_lvl+0x216/0x2d0 [ 220.174538][ T5779] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.180543][ T5779] dump_stack+0x1e/0x24 [ 220.184927][ T5779] panic+0x4e2/0xcf0 [ 220.189055][ T5779] ? kmsan_get_metadata+0xf1/0x1c0 [ 220.194484][ T5779] kmsan_report+0x2c7/0x2d0 [ 220.199191][ T5779] ? __msan_warning+0x95/0x120 [ 220.204178][ T5779] ? hfsplus_rename_cat+0x10e5/0x16f0 [ 220.209714][ T5779] ? hfsplus_rename+0x209/0x2e0 [ 220.214715][ T5779] ? vfs_rename+0x1d9d/0x2280 [ 220.219575][ T5779] ? do_renameat2+0x18d0/0x1d50 [ 220.224619][ T5779] ? __x64_sys_renameat2+0x154/0x1f0 [ 220.230238][ T5779] ? x64_sys_call+0x204b/0x3c30 [ 220.235274][ T5779] ? do_syscall_64+0xcd/0x1e0 [ 220.240178][ T5779] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.246425][ T5779] ? hfsplus_bnode_read+0x33c/0x350 [ 220.251859][ T5779] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.257245][ T5779] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.263228][ T5779] ? hfsplus_bnode_dump+0x4f5/0x540 [ 220.268571][ T5779] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.273939][ T5779] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.279915][ T5779] ? hfsplus_brec_remove+0x91d/0x9d0 [ 220.285357][ T5779] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.290719][ T5779] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.296699][ T5779] __msan_warning+0x95/0x120 [ 220.301434][ T5779] hfsplus_rename_cat+0x10e5/0x16f0 [ 220.306816][ T5779] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 220.313397][ T5779] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.318776][ T5779] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.324785][ T5779] ? from_kgid+0x370/0x9a0 [ 220.329391][ T5779] ? capable_wrt_inode_uidgid+0x36b/0x4a0 [ 220.335344][ T5779] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.340831][ T5779] hfsplus_rename+0x209/0x2e0 [ 220.345719][ T5779] ? __pfx_hfsplus_rename+0x10/0x10 [ 220.351066][ T5779] vfs_rename+0x1d9d/0x2280 [ 220.355770][ T5779] do_renameat2+0x18d0/0x1d50 [ 220.360656][ T5779] __x64_sys_renameat2+0x154/0x1f0 [ 220.365962][ T5779] x64_sys_call+0x204b/0x3c30 [ 220.370829][ T5779] do_syscall_64+0xcd/0x1e0 [ 220.375553][ T5779] ? clear_bhb_loop+0x25/0x80 [ 220.380478][ T5779] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.386555][ T5779] RIP: 0033:0x7f73b0cace99 [ 220.391094][ T5779] 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 [ 220.410906][ T5779] RSP: 002b:00007ffd2ec1f938 EFLAGS: 00000246 ORIG_RAX: 000000000000013c [ 220.419571][ T5779] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73b0cace99 [ 220.427762][ T5779] RDX: 0000000000000004 RSI: 0000200000000380 RDI: 0000000000000004 [ 220.435943][ T5779] RBP: 00007f73b0d215f0 R08: 0000000000000001 R09: 00005555763434c0 [ 220.444032][ T5779] R10: 0000200000000200 R11: 0000000000000246 R12: 00007ffd2ec1f960 [ 220.452127][ T5779] R13: 00007ffd2ec1fb88 R14: 431bde82d7b634db R15: 00007f73b0cf603b [ 220.460238][ T5779] [ 220.463548][ T5779] Kernel Offset: disabled [ 220.468063][ T5779] Rebooting in 86400 seconds..