reactos/syzkaller
1
0
Fork 0
mirror of https://github.com/reactos/syzkaller.git synced 2024-10-07 00:53:27 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

executor: fix write_output_64

Browse Source 
The output pointer was not updated after writing.

Signed-off-by: Alexander Egorenkov <Alexander.Egorenkov@ibm.com>
This commit is contained in:
Alexander Egorenkov 2020-06-25 20:50:10 +02:00 committed by Dmitry Vyukov
parent adb7d9e67b
commit ac40b8cc84
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
executor/executor.cc
View File

@ -284,6 +284,8 @@ struct kcov_comparison_t {
bool operator<(const struct kcov_comparison_t& other) const;
};
static_assert(sizeof(kcov_comparison_t) == 4 * sizeof(uint64), "invalid size of kcov_comparison_t");
struct feature_t {
const char* name;
void (*setup)();
@ -1315,7 +1317,8 @@ uint32* write_output_64(uint64 v)
fail("output overflow: pos=%p region=[%p:%p]",
output_pos, output_data, (char*)output_data + kMaxOutput);
*(uint64*)output_pos = v;
return output_pos + 2;
output_pos += 2;
return output_pos;
}
void write_completed(uint32 completed)
@ -1327,6 +1330,9 @@ void write_completed(uint32 completed)
#if SYZ_EXECUTOR_USES_SHMEM
void kcov_comparison_t::write()
{
if (type > (KCOV_CMP_CONST | KCOV_CMP_SIZE_MASK))
fail("invalid kcov comp type %llx", type);
// Write order: type arg1 arg2 pc.
write_output((uint32)type);