./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4261056069 <...> Warning: Permanently added '10.128.1.216' (ED25519) to the list of known hosts. execve("./syz-executor4261056069", ["./syz-executor4261056069"], 0x7fff4d148a00 /* 10 vars */) = 0 brk(NULL) = 0x555559ec3000 brk(0x555559ec3d00) = 0x555559ec3d00 arch_prctl(ARCH_SET_FS, 0x555559ec3380) = 0 set_tid_address(0x555559ec3650) = 5787 set_robust_list(0x555559ec3660, 24) = 0 rseq(0x555559ec3ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4261056069", 4096) = 28 getrandom("\xa6\x8b\x62\x7c\x66\x13\x0f\x51", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555559ec3d00 brk(0x555559ee4d00) = 0x555559ee4d00 brk(0x555559ee5000) = 0x555559ee5000 mprotect(0x7f3f4dd14000, 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=0x555559ec3650) = 5788 ./strace-static-x86_64: Process 5788 attached [pid 5788] set_robust_list(0x555559ec3660, 24) = 0 [pid 5788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5788] setpgid(0, 0) = 0 [pid 5788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5788] write(3, "1000", 4) = 4 [pid 5788] close(3executing program ) = 0 [pid 5788] write(1, "executing program\n", 18) = 18 [pid 5788] memfd_create("syzkaller", 0) = 3 [pid 5788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3f45800000 [pid 5788] 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 5788] munmap(0x7f3f45800000, 138412032) = 0 [pid 5788] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5788] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5788] close(3) = 0 [pid 5788] close(4) = 0 [pid 5788] mkdir("./file1", 0777) = 0 [ 181.257616][ T5788] loop0: detected capacity change from 0 to 1024 [ 181.291968][ T5788] ===================================================== [ 181.299491][ T5788] BUG: KMSAN: uninit-value in hfsplus_strcasecmp+0x1ca/0x770 [ 181.308260][ T5788] hfsplus_strcasecmp+0x1ca/0x770 [ 181.313625][ T5788] hfsplus_cat_case_cmp_key+0xde/0x190 [ 181.319296][ T5788] hfs_find_rec_by_key+0xb1/0x240 [ 181.324824][ T5788] __hfsplus_brec_find+0x26f/0x7b0 [ 181.330182][ T5788] hfsplus_brec_find+0x445/0x970 [ 181.335446][ T5788] hfsplus_brec_read+0x46/0x1a0 [ 181.340509][ T5788] hfsplus_fill_super+0x199e/0x2700 [ 181.346151][ T5788] mount_bdev+0x39a/0x520 [ 181.350690][ T5788] hfsplus_mount+0x4d/0x60 [ 181.355472][ T5788] legacy_get_tree+0x114/0x290 [ 181.360430][ T5788] vfs_get_tree+0xb1/0x5a0 [ 181.365315][ T5788] do_new_mount+0x71f/0x15e0 [ 181.370114][ T5788] path_mount+0x742/0x1f10 [ 181.374846][ T5788] __se_sys_mount+0x722/0x810 [ 181.379719][ T5788] __x64_sys_mount+0xe4/0x150 [ 181.384722][ T5788] x64_sys_call+0x255a/0x3ba0 [ 181.389591][ T5788] do_syscall_64+0xcd/0x1e0 [ 181.394361][ T5788] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.400431][ T5788] [ 181.402831][ T5788] Uninit was created at: [ 181.407463][ T5788] __kmalloc_noprof+0x661/0xf30 [ 181.412490][ T5788] hfsplus_find_init+0x95/0x1d0 [ 181.417606][ T5788] hfsplus_fill_super+0x1688/0x2700 [ 181.423625][ T5788] mount_bdev+0x39a/0x520 [ 181.428135][ T5788] hfsplus_mount+0x4d/0x60 [ 181.432664][ T5788] legacy_get_tree+0x114/0x290 [ 181.437683][ T5788] vfs_get_tree+0xb1/0x5a0 [ 181.442292][ T5788] do_new_mount+0x71f/0x15e0 [ 181.447123][ T5788] path_mount+0x742/0x1f10 [ 181.451701][ T5788] __se_sys_mount+0x722/0x810 [ 181.456627][ T5788] __x64_sys_mount+0xe4/0x150 [ 181.461484][ T5788] x64_sys_call+0x255a/0x3ba0 [ 181.466499][ T5788] do_syscall_64+0xcd/0x1e0 [ 181.471214][ T5788] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.477444][ T5788] [ 181.479897][ T5788] CPU: 0 UID: 0 PID: 5788 Comm: syz-executor426 Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0 [ 181.491345][ T5788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 181.501643][ T5788] ===================================================== [ 181.508752][ T5788] Disabling lock debugging due to kernel taint [ 181.515092][ T5788] Kernel panic - not syncing: kmsan.panic set ... [ 181.521597][ T5788] CPU: 0 UID: 0 PID: 5788 Comm: syz-executor426 Tainted: G B 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0 [ 181.534319][ T5788] Tainted: [B]=BAD_PAGE [ 181.538532][ T5788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 181.548695][ T5788] Call Trace: [ 181.552065][ T5788] [ 181.555089][ T5788] dump_stack_lvl+0x216/0x2d0 [ 181.559903][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.565820][ T5788] dump_stack+0x1e/0x30 [ 181.570182][ T5788] panic+0x4e2/0xcf0 [ 181.574248][ T5788] ? kmsan_get_metadata+0x131/0x1c0 [ 181.579605][ T5788] kmsan_report+0x2c7/0x2d0 [ 181.584238][ T5788] ? __module_address+0x4d/0x630 [ 181.589277][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.594570][ T5788] ? __msan_warning+0x95/0x120 [ 181.599453][ T5788] ? hfsplus_strcasecmp+0x1ca/0x770 [ 181.604780][ T5788] ? hfsplus_cat_case_cmp_key+0xde/0x190 [ 181.610522][ T5788] ? hfs_find_rec_by_key+0xb1/0x240 [ 181.615835][ T5788] ? __hfsplus_brec_find+0x26f/0x7b0 [ 181.621240][ T5788] ? hfsplus_brec_find+0x445/0x970 [ 181.626474][ T5788] ? hfsplus_brec_read+0x46/0x1a0 [ 181.631642][ T5788] ? hfsplus_fill_super+0x199e/0x2700 [ 181.637214][ T5788] ? mount_bdev+0x39a/0x520 [ 181.641822][ T5788] ? hfsplus_mount+0x4d/0x60 [ 181.646537][ T5788] ? legacy_get_tree+0x114/0x290 [ 181.651573][ T5788] ? vfs_get_tree+0xb1/0x5a0 [ 181.656274][ T5788] ? do_new_mount+0x71f/0x15e0 [ 181.661142][ T5788] ? path_mount+0x742/0x1f10 [ 181.665862][ T5788] ? __se_sys_mount+0x722/0x810 [ 181.670885][ T5788] ? __x64_sys_mount+0xe4/0x150 [ 181.675845][ T5788] ? x64_sys_call+0x255a/0x3ba0 [ 181.680815][ T5788] ? do_syscall_64+0xcd/0x1e0 [ 181.685620][ T5788] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.691803][ T5788] ? kernel_text_address+0x129/0x1b0 [ 181.697189][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.702488][ T5788] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 181.708948][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.714243][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.719530][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.725438][ T5788] ? hfsplus_bnode_read_u16+0x3e/0x2b0 [ 181.731024][ T5788] ? filter_irq_stacks+0x164/0x1a0 [ 181.736264][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.741555][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.747475][ T5788] __msan_warning+0x95/0x120 [ 181.752184][ T5788] hfsplus_strcasecmp+0x1ca/0x770 [ 181.757357][ T5788] hfsplus_cat_case_cmp_key+0xde/0x190 [ 181.762948][ T5788] hfs_find_rec_by_key+0xb1/0x240 [ 181.768117][ T5788] ? __pfx_hfsplus_cat_case_cmp_key+0x10/0x10 [ 181.774363][ T5788] __hfsplus_brec_find+0x26f/0x7b0 [ 181.779631][ T5788] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 181.785461][ T5788] hfsplus_brec_find+0x445/0x970 [ 181.790551][ T5788] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 181.796391][ T5788] hfsplus_brec_read+0x46/0x1a0 [ 181.801394][ T5788] hfsplus_fill_super+0x199e/0x2700 [ 181.806797][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.812085][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.817994][ T5788] ? vsnprintf+0x2994/0x2a00 [ 181.822676][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.828015][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.833308][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.839243][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.844562][ T5788] mount_bdev+0x39a/0x520 [ 181.849003][ T5788] ? __pfx_hfsplus_fill_super+0x10/0x10 [ 181.854683][ T5788] hfsplus_mount+0x4d/0x60 [ 181.859245][ T5788] legacy_get_tree+0x114/0x290 [ 181.864170][ T5788] ? __pfx_hfsplus_mount+0x10/0x10 [ 181.869434][ T5788] vfs_get_tree+0xb1/0x5a0 [ 181.874063][ T5788] ? mount_capable+0x97/0x120 [ 181.878882][ T5788] do_new_mount+0x71f/0x15e0 [ 181.883586][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.888889][ T5788] path_mount+0x742/0x1f10 [ 181.893444][ T5788] ? user_path_at+0x32f/0x390 [ 181.898280][ T5788] __se_sys_mount+0x722/0x810 [ 181.903067][ T5788] ? ptrace_notify+0x263/0x320 [ 181.907954][ T5788] __x64_sys_mount+0xe4/0x150 [ 181.912754][ T5788] x64_sys_call+0x255a/0x3ba0 [ 181.917553][ T5788] do_syscall_64+0xcd/0x1e0 [ 181.922177][ T5788] ? clear_bhb_loop+0x25/0x80 [ 181.926992][ T5788] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.933072][ T5788] RIP: 0033:0x7f3f4dca1dea [ 181.937595][ T5788] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 181.957377][ T5788] RSP: 002b:00007ffc737c57e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 181.965926][ T5788] RAX: ffffffffffffffda RBX: 00007ffc737c5800 RCX: 00007f3f4dca1dea [ 181.973992][ T5788] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00007ffc737c5800 [ 181.982062][ T5788] RBP: 0000000000000004 R08: 00007ffc737c5840 R09: 000000000000066c [ 181.990120][ T5788] R10: 0000000003000c00 R11: 0000000000000286 R12: 0000000003000c00 [ 181.998181][ T5788] R13: 00007ffc737c5840 R14: 0000000000000003 R15: 0000000000080000 [ 182.006283][ T5788] [ 182.009721][ T5788] Kernel Offset: disabled [ 182.014113][ T5788] Rebooting in 86400 seconds..