./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2794783001 <...> Warning: Permanently added '10.128.1.157' (ED25519) to the list of known hosts. execve("./syz-executor2794783001", ["./syz-executor2794783001"], 0x7ffd7aa3f980 /* 10 vars */) = 0 brk(NULL) = 0x55557675b000 brk(0x55557675bd00) = 0x55557675bd00 arch_prctl(ARCH_SET_FS, 0x55557675b380) = 0 set_tid_address(0x55557675b650) = 5773 set_robust_list(0x55557675b660, 24) = 0 rseq(0x55557675bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2794783001", 4096) = 28 getrandom("\x2b\xdf\xaa\x2b\x69\x11\x8e\x37", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557675bd00 brk(0x55557677cd00) = 0x55557677cd00 brk(0x55557677d000) = 0x55557677d000 mprotect(0x7f9067302000, 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 5774 attached , child_tidptr=0x55557675b650) = 5774 [pid 5774] set_robust_list(0x55557675b660, 24) = 0 [pid 5774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5774] setpgid(0, 0) = 0 [pid 5774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5774] write(3, "1000", 4) = 4 executing program [pid 5774] close(3) = 0 [pid 5774] write(1, "executing program\n", 18) = 18 [pid 5774] memfd_create("syzkaller", 0) = 3 [pid 5774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f905ee00000 [pid 5774] 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 5774] munmap(0x7f905ee00000, 138412032) = 0 [pid 5774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5774] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5774] close(3) = 0 [pid 5774] close(4) = 0 [pid 5774] mkdir("./file1", 0777) = 0 [pid 5774] mount("/dev/loop0", "./file1", "hfsplus", 0, "") = 0 [pid 5774] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5774] chdir("./file1") = 0 [pid 5774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 220.352834][ T5774] loop0: detected capacity change from 0 to 1024 [ 220.401621][ T5774] ===================================================== [ 220.409155][ T5774] BUG: KMSAN: uninit-value in hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 220.419125][ T5774] hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 220.424977][ T5774] __hfsplus_brec_find+0x26f/0x7b0 [ 220.432286][ T5774] hfsplus_brec_find+0x445/0x970 [ 220.438416][ T5774] hfsplus_find_attr+0x30c/0x390 [ 220.443805][ T5774] hfsplus_listxattr+0x586/0x1a50 [ 220.449554][ T5774] listxattr+0x1f3/0x6b0 [ 220.454099][ T5774] path_listxattrat+0x437/0x6c0 [ 220.459358][ T5774] __x64_sys_listxattr+0x9d/0xe0 [ 220.464555][ T5774] x64_sys_call+0x3980/0x3c30 [ 220.469796][ T5774] do_syscall_64+0xcd/0x1e0 [ 220.474770][ T5774] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.481109][ T5774] [ 220.483565][ T5774] Uninit was created at: [ 220.488356][ T5774] __kmalloc_noprof+0x923/0x1230 [ 220.493616][ T5774] hfsplus_find_init+0x95/0x1d0 [ 220.498920][ T5774] hfsplus_listxattr+0x44a/0x1a50 [ 220.504345][ T5774] listxattr+0x1f3/0x6b0 [ 220.509660][ T5774] path_listxattrat+0x437/0x6c0 [ 220.515008][ T5774] __x64_sys_listxattr+0x9d/0xe0 [ 220.520446][ T5774] x64_sys_call+0x3980/0x3c30 [ 220.525343][ T5774] do_syscall_64+0xcd/0x1e0 [ 220.530329][ T5774] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.536712][ T5774] [ 220.539625][ T5774] CPU: 0 UID: 0 PID: 5774 Comm: syz-executor279 Not tainted 6.13.0-syzkaller-09585-gb4b0881156fb #0 [ 220.551182][ T5774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 220.561684][ T5774] ===================================================== [ 220.569227][ T5774] Disabling lock debugging due to kernel taint [ 220.576548][ T5774] Kernel panic - not syncing: kmsan.panic set ... [ 220.583155][ T5774] CPU: 0 UID: 0 PID: 5774 Comm: syz-executor279 Tainted: G B 6.13.0-syzkaller-09585-gb4b0881156fb #0 [ 220.595688][ T5774] Tainted: [B]=BAD_PAGE [ 220.599998][ T5774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 220.610552][ T5774] Call Trace: [ 220.614018][ T5774] [ 220.618040][ T5774] dump_stack_lvl+0x216/0x2d0 [ 220.622998][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.629065][ T5774] dump_stack+0x1e/0x24 [ 220.633361][ T5774] panic+0x4e2/0xcf0 [ 220.637549][ T5774] ? kmsan_get_metadata+0x61/0x1c0 [ 220.642918][ T5774] kmsan_report+0x2c7/0x2d0 [ 220.648235][ T5774] ? __msan_warning+0x95/0x120 [ 220.653378][ T5774] ? hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 220.659304][ T5774] ? __hfsplus_brec_find+0x26f/0x7b0 [ 220.665818][ T5774] ? hfsplus_brec_find+0x445/0x970 [ 220.671437][ T5774] ? hfsplus_find_attr+0x30c/0x390 [ 220.678186][ T5774] ? hfsplus_listxattr+0x586/0x1a50 [ 220.685209][ T5774] ? listxattr+0x1f3/0x6b0 [ 220.689888][ T5774] ? path_listxattrat+0x437/0x6c0 [ 220.695314][ T5774] ? __x64_sys_listxattr+0x9d/0xe0 [ 220.700711][ T5774] ? x64_sys_call+0x3980/0x3c30 [ 220.705825][ T5774] ? do_syscall_64+0xcd/0x1e0 [ 220.710827][ T5774] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.717346][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.723424][ T5774] ? hfsplus_bnode_read_u16+0x3e/0x2b0 [ 220.729092][ T5774] ? filter_irq_stacks+0x60/0x1a0 [ 220.734306][ T5774] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.739696][ T5774] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 220.746169][ T5774] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.751553][ T5774] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 220.758468][ T5774] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.763822][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.770023][ T5774] __msan_warning+0x95/0x120 [ 220.774876][ T5774] hfs_find_1st_rec_by_cnid+0x27a/0x3f0 [ 220.780664][ T5774] __hfsplus_brec_find+0x26f/0x7b0 [ 220.786352][ T5774] ? __pfx_hfs_find_1st_rec_by_cnid+0x10/0x10 [ 220.792633][ T5774] hfsplus_brec_find+0x445/0x970 [ 220.798101][ T5774] ? __pfx_hfs_find_1st_rec_by_cnid+0x10/0x10 [ 220.804441][ T5774] hfsplus_find_attr+0x30c/0x390 [ 220.809898][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.818894][ T5774] hfsplus_listxattr+0x586/0x1a50 [ 220.824459][ T5774] ? terminate_walk+0x50c/0x580 [ 220.831336][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.837347][ T5774] ? filename_lookup+0x695/0x7c0 [ 220.842562][ T5774] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.847924][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.853982][ T5774] ? kmsan_get_metadata+0x13e/0x1c0 [ 220.859331][ T5774] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 220.865496][ T5774] ? __pfx_hfsplus_listxattr+0x10/0x10 [ 220.871371][ T5774] ? __pfx_hfsplus_listxattr+0x10/0x10 [ 220.877088][ T5774] listxattr+0x1f3/0x6b0 [ 220.883285][ T5774] path_listxattrat+0x437/0x6c0 [ 220.890331][ T5774] __x64_sys_listxattr+0x9d/0xe0 [ 220.895456][ T5774] x64_sys_call+0x3980/0x3c30 [ 220.900329][ T5774] do_syscall_64+0xcd/0x1e0 [ 220.905037][ T5774] ? clear_bhb_loop+0x25/0x80 [ 220.910404][ T5774] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.916615][ T5774] RIP: 0033:0x7f906728ea59 [ 220.921943][ T5774] 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 [ 220.943245][ T5774] RSP: 002b:00007fffd4608b48 EFLAGS: 00000246 ORIG_RAX: 00000000000000c2 [ 220.952201][ T5774] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f906728ea59 [ 220.960308][ T5774] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000640 [ 220.969085][ T5774] RBP: 00007f90673025f0 R08: 00000000000006c8 R09: 000055557675c4c0 [ 220.977885][ T5774] R10: 00007fffd4608a10 R11: 0000000000000246 R12: 00007fffd4608b70 [ 220.986597][ T5774] R13: 00007fffd4608d98 R14: 431bde82d7b634db R15: 00007f90672d703b [ 220.995163][ T5774] [ 221.000049][ T5774] Kernel Offset: disabled [ 221.004582][ T5774] Rebooting in 86400 seconds..