./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2357440924 <...> Warning: Permanently added '10.128.1.91' (ED25519) to the list of known hosts. execve("./syz-executor2357440924", ["./syz-executor2357440924"], 0x7ffe91513d80 /* 10 vars */) = 0 brk(NULL) = 0x55556a85a000 brk(0x55556a85ad00) = 0x55556a85ad00 arch_prctl(ARCH_SET_FS, 0x55556a85a380) = 0 set_tid_address(0x55556a85a650) = 5046 set_robust_list(0x55556a85a660, 24) = 0 rseq(0x55556a85aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2357440924", 4096) = 28 getrandom("\x91\x75\x17\x90\x6d\x3e\xec\xea", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556a85ad00 brk(0x55556a87bd00) = 0x55556a87bd00 brk(0x55556a87c000) = 0x55556a87c000 mprotect(0x7fe758798000, 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=0x55556a85a650) = 5047 ./strace-static-x86_64: Process 5047 attached [pid 5047] set_robust_list(0x55556a85a660, 24) = 0 [pid 5047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] setpgid(0, 0) = 0 [pid 5047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5047] write(3, "1000", 4) = 4 [pid 5047] close(3) = 0 [pid 5047] write(1, "executing program\n", 18executing program ) = 18 [pid 5047] memfd_create("syzkaller", 0) = 3 [pid 5047] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe750200000 [pid 5047] 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 5047] munmap(0x7fe750200000, 138412032) = 0 [pid 5047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5047] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5047] close(3) = 0 [pid 5047] close(4) = 0 [pid 5047] mkdir("\xe9\x1f\x71\x89\x59\x1e\x92\x33\x61\x4b", 0777) = 0 [pid 5047] mount("/dev/loop0", "\xe9\x1f\x71\x89\x59\x1e\x92\x33\x61\x4b", "hfsplus", MS_NOSUID|MS_SYNCHRONOUS|MS_NODIRATIME|MS_REC, "") = 0 [pid 5047] openat(AT_FDCWD, "\xe9\x1f\x71\x89\x59\x1e\x92\x33\x61\x4b", O_RDONLY|O_DIRECTORY) = 3 [pid 5047] chdir("\xe9\x1f\x71\x89\x59\x1e\x92\x33\x61\x4b") = 0 [ 193.086964][ T5047] loop0: detected capacity change from 0 to 1024 [pid 5047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 193.154960][ T5047] ===================================================== [ 193.162474][ T5047] BUG: KMSAN: uninit-value in hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 193.170807][ T5047] hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 193.176699][ T5047] __hfsplus_brec_find+0x26f/0x7b0 [ 193.182055][ T5047] hfsplus_brec_find+0x445/0x970 [ 193.187317][ T5047] hfsplus_find_attr+0x30c/0x390 [ 193.192495][ T5047] hfsplus_listxattr+0x586/0x1a50 [ 193.197859][ T5047] listxattr+0x1f3/0x6b0 [ 193.202342][ T5047] __x64_sys_listxattr+0x168/0x2e0 [ 193.207782][ T5047] x64_sys_call+0xded/0x3c10 [ 193.212625][ T5047] do_syscall_64+0xcd/0x1e0 [ 193.217650][ T5047] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 193.223831][ T5047] [ 193.226361][ T5047] Uninit was created at: [ 193.230886][ T5047] __kmalloc_noprof+0x661/0xf30 [ 193.236056][ T5047] hfsplus_find_init+0x95/0x1d0 [ 193.241136][ T5047] hfsplus_listxattr+0x44a/0x1a50 [ 193.246489][ T5047] listxattr+0x1f3/0x6b0 [ 193.250958][ T5047] __x64_sys_listxattr+0x168/0x2e0 [ 193.256332][ T5047] x64_sys_call+0xded/0x3c10 [ 193.261146][ T5047] do_syscall_64+0xcd/0x1e0 [ 193.265996][ T5047] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 193.272203][ T5047] [ 193.274652][ T5047] CPU: 1 UID: 0 PID: 5047 Comm: syz-executor235 Not tainted 6.10.0-syzkaller-12246-g786c8248dbd3 #0 [ 193.285740][ T5047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 193.296036][ T5047] ===================================================== [ 193.303097][ T5047] Disabling lock debugging due to kernel taint [ 193.309550][ T5047] Kernel panic - not syncing: kmsan.panic set ... [ 193.316120][ T5047] CPU: 1 UID: 0 PID: 5047 Comm: syz-executor235 Tainted: G B 6.10.0-syzkaller-12246-g786c8248dbd3 #0 [ 193.328529][ T5047] Tainted: [B]=BAD_PAGE [ 193.332783][ T5047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 193.342967][ T5047] Call Trace: [ 193.346341][ T5047] [ 193.349383][ T5047] dump_stack_lvl+0x216/0x2d0 [ 193.354293][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.360325][ T5047] dump_stack+0x1e/0x30 [ 193.364690][ T5047] panic+0x4e2/0xcd0 [ 193.368728][ T5047] ? kmsan_get_metadata+0xf1/0x1c0 [ 193.374024][ T5047] kmsan_report+0x2c7/0x2d0 [ 193.378691][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.384700][ T5047] ? __msan_warning+0x95/0x120 [ 193.389639][ T5047] ? hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 193.395623][ T5047] ? __hfsplus_brec_find+0x26f/0x7b0 [ 193.401126][ T5047] ? hfsplus_brec_find+0x445/0x970 [ 193.406398][ T5047] ? hfsplus_find_attr+0x30c/0x390 [ 193.411670][ T5047] ? hfsplus_listxattr+0x586/0x1a50 [ 193.417022][ T5047] ? listxattr+0x1f3/0x6b0 [ 193.421599][ T5047] ? __x64_sys_listxattr+0x168/0x2e0 [ 193.427036][ T5047] ? x64_sys_call+0xded/0x3c10 [ 193.431969][ T5047] ? do_syscall_64+0xcd/0x1e0 [ 193.436878][ T5047] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 193.443139][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.449128][ T5047] ? hfsplus_bnode_read_u16+0x3e/0x2b0 [ 193.454775][ T5047] ? filter_irq_stacks+0x60/0x1a0 [ 193.459948][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.465344][ T5047] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 193.471833][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.477231][ T5047] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 193.483725][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.489128][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.495225][ T5047] __msan_warning+0x95/0x120 [ 193.500013][ T5047] hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 193.505797][ T5047] __hfsplus_brec_find+0x26f/0x7b0 [ 193.511063][ T5047] ? __pfx_hfs_find_1st_rec_by_cnid+0x10/0x10 [ 193.517386][ T5047] hfsplus_brec_find+0x445/0x970 [ 193.522471][ T5047] ? __pfx_hfs_find_1st_rec_by_cnid+0x10/0x10 [ 193.528729][ T5047] hfsplus_find_attr+0x30c/0x390 [ 193.533815][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.539819][ T5047] hfsplus_listxattr+0x586/0x1a50 [ 193.545087][ T5047] ? __kmalloc_node_noprof+0xe9/0xf50 [ 193.550644][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.556199][ T5047] ? __kmalloc_node_noprof+0x726/0xf50 [ 193.561818][ T5047] ? __kvmalloc_node_noprof+0xc0/0x2d0 [ 193.567418][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.572793][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.578783][ T5047] ? kmsan_get_metadata+0x13e/0x1c0 [ 193.584157][ T5047] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 193.590157][ T5047] ? __pfx_hfsplus_listxattr+0x10/0x10 [ 193.595807][ T5047] ? __pfx_hfsplus_listxattr+0x10/0x10 [ 193.601951][ T5047] listxattr+0x1f3/0x6b0 [ 193.606373][ T5047] __x64_sys_listxattr+0x168/0x2e0 [ 193.611645][ T5047] x64_sys_call+0xded/0x3c10 [ 193.616428][ T5047] do_syscall_64+0xcd/0x1e0 [ 193.621144][ T5047] ? clear_bhb_loop+0x25/0x80 [ 193.625951][ T5047] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 193.632046][ T5047] RIP: 0033:0x7fe758724a99 [ 193.636592][ T5047] 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 [ 193.656371][ T5047] RSP: 002b:00007ffcbd7b7b98 EFLAGS: 00000246 ORIG_RAX: 00000000000000c2 [ 193.664939][ T5047] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe758724a99 [ 193.673088][ T5047] RDX: 00000000000000f9 RSI: 0000000000000000 RDI: 0000000020000140 [ 193.681179][ T5047] RBP: 00007fe7587985f0 R08: 00000000000006a4 R09: 000055556a85b4c0 [ 193.689275][ T5047] R10: 00007ffcbd7b7a60 R11: 0000000000000246 R12: 00007ffcbd7b7bc0 [ 193.697395][ T5047] R13: 00007ffcbd7b7de8 R14: 431bde82d7b634db R15: 00007fe75876d03b [ 193.705605][ T5047] [ 193.709076][ T5047] Kernel Offset: disabled [ 193.713519][ T5047] Rebooting in 86400 seconds..