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[td-3277]<fix>: fix the taosd crash caused by fetching the too long binary data in tags.

This commit is contained in:
Haojun Liao 2021-03-12 15:32:58 +08:00
parent 2c272604f4
commit 2d2316eeec
1 changed files with 12 additions and 3 deletions
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15
src/query/src/qExecutor.c
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@ -2913,7 +2913,9 @@ static void doSetTagValueInParam(void* pTable, int32_t tagColId, tVariant *tag,
return;
}
tVariantCreateFromBinary(tag, varDataVal(val), varDataLen(val), type);
int32_t maxLen = bytes - VARSTR_HEADER_SIZE;
int32_t len = (varDataLen(val) > maxLen)? maxLen:varDataLen(val);
tVariantCreateFromBinary(tag, varDataVal(val), len, type);
} else {
if (isNull(val, type)) {
tag->nType = TSDB_DATA_TYPE_NULL;
@ -7070,8 +7072,15 @@ static void doSetTagValueToResultBuf(char* output, const char* val, int16_t type
return;
}
if (type == TSDB_DATA_TYPE_BINARY || type == TSDB_DATA_TYPE_NCHAR) {
memcpy(output, val, varDataTLen(val));
if (IS_VAR_DATA_TYPE(type)) {
// Binary data overflows for sort of unknown reasons. Let trim the overflow data
if (varDataTLen(val) > bytes) {
int32_t len = bytes;
memcpy(varDataVal(output), varDataVal(val), len);
varDataSetLen(output, len);
} else {
varDataCopy(output, val);
}
} else {
memcpy(output, val, bytes);
}