./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3966793723 <...> Warning: Permanently added '10.128.1.74' (ED25519) to the list of known hosts. execve("./syz-executor3966793723", ["./syz-executor3966793723"], 0x7fff9919cbd0 /* 10 vars */) = 0 brk(NULL) = 0x555556d83000 brk(0x555556d83d00) = 0x555556d83d00 arch_prctl(ARCH_SET_FS, 0x555556d83380) = 0 set_tid_address(0x555556d83650) = 5023 set_robust_list(0x555556d83660, 24) = 0 rseq(0x555556d83ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3966793723", 4096) = 28 getrandom("\x77\x2b\x51\xf6\x84\x56\xd0\x3b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d83d00 brk(0x555556da4d00) = 0x555556da4d00 brk(0x555556da5000) = 0x555556da5000 mprotect(0x7f4d4af49000, 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./strace-static-x86_64: Process 5024 attached , child_tidptr=0x555556d83650) = 5024 [pid 5024] set_robust_list(0x555556d83660, 24) = 0 [pid 5024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5024] setpgid(0, 0) = 0 [pid 5024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5024] write(3, "1000", 4) = 4 [pid 5024] close(3) = 0 [pid 5024] memfd_create("syzkaller", 0) = 3 [pid 5024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4d42a00000 [pid 5024] 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 5024] munmap(0x7f4d42a00000, 138412032) = 0 [pid 5024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5024] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5024] close(3) = 0 [pid 5024] close(4) = 0 [pid 5024] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [ 147.021871][ T5024] loop0: detected capacity change from 0 to 1024 [pid 5024] mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "hfsplus", MS_NOSUID|MS_DIRSYNC|MS_POSIXACL|MS_STRICTATIME, "") = 0 [pid 5024] openat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_DIRECTORY) = 3 [pid 5024] chdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 147.103521][ T5024] ===================================================== [ 147.110843][ T5024] BUG: KMSAN: uninit-value in hfsplus_lookup+0x671/0xef0 [ 147.118080][ T5024] hfsplus_lookup+0x671/0xef0 [ 147.123108][ T5024] path_openat+0x278d/0x5ad0 [ 147.127906][ T5024] do_filp_open+0x20d/0x590 [ 147.132739][ T5024] do_sys_openat2+0x1bf/0x2f0 [ 147.137586][ T5024] __x64_sys_creat+0xe6/0x140 [ 147.142597][ T5024] do_syscall_64+0xcf/0x1e0 [ 147.147287][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 147.153618][ T5024] [ 147.156034][ T5024] Uninit was created at: [ 147.160645][ T5024] __alloc_pages+0x9a6/0xe00 [ 147.165396][ T5024] new_slab+0x2d7/0x1400 [ 147.170005][ T5024] ___slab_alloc+0x16b5/0x3970 [ 147.174968][ T5024] kmem_cache_alloc_lru+0x64d/0xb30 [ 147.180505][ T5024] hfsplus_alloc_inode+0x5a/0xc0 [ 147.185644][ T5024] alloc_inode+0x83/0x440 [ 147.190295][ T5024] iget_locked+0x2c2/0xef0 [ 147.194845][ T5024] hfsplus_iget+0x59/0xaf0 [ 147.199359][ T5024] hfsplus_btree_open+0x13e/0x1d00 [ 147.204719][ T5024] hfsplus_fill_super+0x1113/0x26f0 [ 147.210267][ T5024] mount_bdev+0x38f/0x510 [ 147.214734][ T5024] hfsplus_mount+0x4d/0x60 [ 147.219261][ T5024] legacy_get_tree+0x110/0x290 [ 147.224223][ T5024] vfs_get_tree+0xa5/0x560 [ 147.228846][ T5024] do_new_mount+0x71f/0x15e0 [ 147.233695][ T5024] path_mount+0x73d/0x1f20 [ 147.238220][ T5024] __se_sys_mount+0x725/0x810 [ 147.243107][ T5024] __x64_sys_mount+0xe4/0x140 [ 147.247968][ T5024] do_syscall_64+0xcf/0x1e0 [ 147.252704][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 147.258815][ T5024] [ 147.261404][ T5024] CPU: 0 PID: 5024 Comm: syz-executor396 Not tainted 6.8.0-rc7-syzkaller-00142-g3aaa8ce7a335 #0 [ 147.272083][ T5024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 147.282379][ T5024] ===================================================== [ 147.289413][ T5024] Disabling lock debugging due to kernel taint [ 147.295826][ T5024] Kernel panic - not syncing: kmsan.panic set ... [ 147.302341][ T5024] CPU: 0 PID: 5024 Comm: syz-executor396 Tainted: G B 6.8.0-rc7-syzkaller-00142-g3aaa8ce7a335 #0 [ 147.314417][ T5024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 147.324623][ T5024] Call Trace: [ 147.328006][ T5024] [ 147.331004][ T5024] dump_stack_lvl+0x1bf/0x240 [ 147.335785][ T5024] dump_stack+0x1e/0x20 [ 147.340090][ T5024] panic+0x4de/0xc90 [ 147.344113][ T5024] kmsan_report+0x2d0/0x2d0 [ 147.348709][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.354643][ T5024] ? __msan_warning+0x96/0x120 [ 147.359568][ T5024] ? hfsplus_lookup+0x671/0xef0 [ 147.364571][ T5024] ? path_openat+0x278d/0x5ad0 [ 147.369470][ T5024] ? do_filp_open+0x20d/0x590 [ 147.374355][ T5024] ? do_sys_openat2+0x1bf/0x2f0 [ 147.379383][ T5024] ? __x64_sys_creat+0xe6/0x140 [ 147.384389][ T5024] ? do_syscall_64+0xcf/0x1e0 [ 147.389157][ T5024] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 147.395368][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.401362][ T5024] ? __hfsplus_brec_find+0x69e/0x7b0 [ 147.406874][ T5024] ? kmsan_get_metadata+0x146/0x1c0 [ 147.412216][ T5024] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 147.418610][ T5024] ? __msan_memcpy+0x108/0x1c0 [ 147.423497][ T5024] ? hfsplus_bnode_read+0x23a/0x250 [ 147.428883][ T5024] ? kmsan_get_metadata+0x146/0x1c0 [ 147.434229][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.440160][ T5024] __msan_warning+0x96/0x120 [ 147.444909][ T5024] hfsplus_lookup+0x671/0xef0 [ 147.449750][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.455768][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.461753][ T5024] ? kmsan_get_metadata+0x146/0x1c0 [ 147.467121][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.473109][ T5024] ? kmsan_get_metadata+0x146/0x1c0 [ 147.478472][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.484404][ T5024] ? kmsan_get_metadata+0x146/0x1c0 [ 147.489777][ T5024] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 147.495702][ T5024] ? hfsplus_rename_cat+0x16f0/0x16f0 [ 147.501264][ T5024] ? hfsplus_rename_cat+0x16f0/0x16f0 [ 147.506775][ T5024] path_openat+0x278d/0x5ad0 [ 147.511631][ T5024] do_filp_open+0x20d/0x590 [ 147.516376][ T5024] do_sys_openat2+0x1bf/0x2f0 [ 147.521217][ T5024] __x64_sys_creat+0xe6/0x140 [ 147.525991][ T5024] do_syscall_64+0xcf/0x1e0 [ 147.530588][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 147.536624][ T5024] RIP: 0033:0x7f4d4aed5a59 [ 147.541171][ T5024] 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 [ 147.560953][ T5024] RSP: 002b:00007ffdd40ed998 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 147.569545][ T5024] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4d4aed5a59 [ 147.577639][ T5024] RDX: 00007f4d4aed4a51 RSI: 0000000000000000 RDI: 00000000200002c0 [ 147.585707][ T5024] RBP: 00007f4d4af495f0 R08: 0000000000000646 R09: 0000555556d844c0 [ 147.593801][ T5024] R10: 00007ffdd40ed860 R11: 0000000000000246 R12: 00007ffdd40ed9c0 [ 147.601883][ T5024] R13: 00007ffdd40edbe8 R14: 431bde82d7b634db R15: 00007f4d4af1e03b [ 147.609981][ T5024] [ 147.613429][ T5024] Kernel Offset: disabled [ 147.617805][ T5024] Rebooting in 86400 seconds..