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Fix iogpu kernel read return checks

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khanhduytran0
2026-06-04 19:35:29 +07:00
parent ab95ca0935
commit 48f10a8f17
1 changed files with 17 additions and 8 deletions
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src/payload_377bed/entry1_type0x09.m
+17 -8
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@@ -418,7 +418,7 @@ __int64 __fastcall buf_ensure_capacity(__int64 a1, unsigned int a2);
__int64 __fastcall krw_ctx_buf_append_entry(__int64 a1, __int64 a2, int a3);
__int64 __fastcall buf_append_data(__int64 a1, const void *a2, unsigned int a3);
__int64 __fastcall send_mach_msg_from_ctx(__int64 a1, mach_port_t a2, mach_port_t a3, mach_msg_id_t a4);
double __fastcall parse_xnu_version_string(__int64 a1);
int __fastcall parse_xnu_version_string(__int64 a1);
const CFDictionaryRef *__fastcall ioservice_get_matching(const char *a1);
__int64 __fastcall ioservice_notification_send(unsigned int a1, __int64 a2, __int64 a3, unsigned int a4, unsigned int a5, const void *a6, int a7);
__int64 __fastcall register_ioservice_publish_notify(__int64 a1, unsigned int a2, mach_port_name_t *a3);
@@ -5809,6 +5809,11 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
char v35; // [xsp+C4h] [xbp-2ECh]
unsigned __int64 v36; // [xsp+D0h] [xbp-2E0h]
memset(v26, 0, sizeof(v26));
memset(v27, 0, sizeof(v27));
memset(v34, 0, sizeof(v34));
v35 = 0;
v36 = 0;
v6 = 708619;
if ( !(unsigned int)acquire_write_semaphore_lock(krwCtx, 7u, 0x2710u) )
{
@@ -5825,7 +5830,7 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
v30[2] = v31;
v34[0] = off_448E0;
v34[1] = v31;
parse_xnu_version_string((__int64)&qword_480D8);
v12 = parse_xnu_version_string((__int64)&qword_480D8);
if ( !v12 )
{
v7 = 163878;
@@ -5854,10 +5859,10 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
goto LABEL_27;
}
v9 = v15;
pgtable_walk_wrapper(krwCtx, v15, (__int64)v27);
v16 = pgtable_walk_wrapper(krwCtx, v15, v27);
if ( !v16 )
goto LABEL_27;
pgtable_walk_wrapper(krwCtx, v9 + *(unsigned int *)(krwCtx + 384), (__int64)v26);
v17 = pgtable_walk_wrapper(krwCtx, v9 + *(unsigned int *)(krwCtx + 384), v26);
if ( !v17 )
goto LABEL_27;
v18 = map_physpage_for_kobj((struct_krwCtx *)krwCtx, v26[0]);
@@ -5867,7 +5872,7 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
v20 = *(uint64_t *)(krwCtx + 392);
v21 = v27[4];
v22 = v27[0];
pgtable_walk_wrapper(krwCtx, v27[0] & ~v20, (__int64)v34);
v23 = pgtable_walk_wrapper(krwCtx, v27[0] & ~v20, v34);
if ( v23 && (v36 & 0xFFFFFFFFC000LL) != 0 )
{
v30[0] = (uint64_t *)MEMORY[0x400000008];
@@ -25425,11 +25430,11 @@ __int64 __fastcall send_mach_msg_from_ctx(__int64 a1, mach_port_t a2, mach_port_
}
//----- (0000000000024BC0) ----------------------------------------------------
double __fastcall parse_xnu_version_string(__int64 a1)
int __fastcall parse_xnu_version_string(__int64 a1)
{
char *v2; // x0
char *v3; // x0
double result; // d0
int result; // w0
__int64 v5; // x8
unsigned __int64 v6; // x22
int v7; // w8
@@ -25476,8 +25481,12 @@ double __fastcall parse_xnu_version_string(__int64 a1)
v8 = 72;
}
*(uint32_t *)(a1 + 32) = v8;
*(uint64_t *)&result = 0x30000000060LL;
*(__int128 *)(a1 + 16) = xmmword_43690;
result = 0;
}
else
{
result = 1;
}
return result;
}