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yiguolei pushed a commit to branch branch-2.1
in repository https://gitbox.apache.org/repos/asf/doris.git
The following commit(s) were added to refs/heads/branch-2.1 by this push:
new 1c91fbc167e [fix](multi table) do not use strlen to calculate the
length of msg (#40367) (#40511)
1c91fbc167e is described below
commit 1c91fbc167ee25df26d829175bd1d3b1e747c66a
Author: hui lai <[email protected]>
AuthorDate: Mon Sep 9 10:35:59 2024 +0800
[fix](multi table) do not use strlen to calculate the length of msg
(#40367) (#40511)
pick #40367
Meet code dump when using single stream multi table load:
```
SUMMARY: AddressSanitizer: heap-buffer-overflow
/root/doris/be/src/io/fs/multi_table_pipe.cpp:99:22 in
doris::io::MultiTablePipe::dispatch(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char>> const&, char const*, unsigned
long, doris::Status (doris::io::KafkaConsumerPipe::*)(char const*, unsigned
long))
```
1. It is hard to guaranteed that msg is a C-style string ending in '\0'
character. If not, it may cause the core dump to access memory out of
bounds.
2. It is not need to calculate the length of msg twice.
Therefore, deleting the logic that using strlen to calculate the length
of msg.
---
be/src/io/fs/multi_table_pipe.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/be/src/io/fs/multi_table_pipe.cpp
b/be/src/io/fs/multi_table_pipe.cpp
index 75fd05f2ef8..be77b3685fc 100644
--- a/be/src/io/fs/multi_table_pipe.cpp
+++ b/be/src/io/fs/multi_table_pipe.cpp
@@ -96,7 +96,7 @@ std::string MultiTablePipe::parse_dst_table(const char* data,
size_t size) {
Status MultiTablePipe::dispatch(const std::string& table, const char* data,
size_t size,
AppendFunc cb) {
- if (size == 0 || strlen(data) == 0) {
+ if (size == 0) {
LOG(WARNING) << "empty data for table: " << table << ", ctx: " <<
_ctx->brief();
return Status::InternalError("empty data");
}
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