sollhui opened a new pull request, #45485:
URL: https://github.com/apache/doris/pull/45485
### What problem does this PR solve?
Problem Summary:
Core dump when load csv file to Doris:
```
==878493==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x7fe0fda1c800 at pc 0x559d3db60c48 bp 0x7fde739b2b20 sp 0x7fde739b22d8
READ of size 6 at 0x7fe0fda1c800 thread T545 (_scanner_scan)
#0 0x559d3db60c47 in memmem
(/mnt/disk1/laihui/doris/output/be/lib/doris_be+0x61eefc47) (BuildId:
5f823a8a2b6a81c7)
#1 0x559d6d02ea60 in unsigned char const*
doris::EncloseCsvLineReaderContext::look_for_column_sep_pos<false>(unsigned
char const*, unsigned long, char const*, unsigned long)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/file_reader/
new_plain_text_line_reader.cpp:111:33
#2 0x559d6d01f21e in
doris::EncloseCsvLineReaderContext::_on_match_enclose(unsigned char const*,
unsigned long&)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/file_reader/new_plain_text_line_reader.cpp:177:13
#3 0x559d6d01c7aa in
doris::EncloseCsvLineReaderContext::read_line_impl(unsigned char const*,
unsigned long)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/file_reader/new_plain_text_line_reader.cpp:68:13
#4 0x559d6cf9e616 in
doris::BaseTextLineReaderContext<doris::EncloseCsvLineReaderContext>::read_line(unsigned
char const*, unsigned long)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/file_reader/new_plain_text_line_reader.h:77:41
#5 0x559d6d0258a3 in doris::NewPlainTextLineReader::read_line(unsigned
char const**, unsigned long*, bool*, doris::io::IOContext const*)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/file_reader/new_plain_text_line_reader.cpp:335:48
#6 0x559d6cf5fc8c in
doris::vectorized::CsvReader::get_next_block(doris::vectorized::Block*,
unsigned long*, bool*)
/mnt/disk1/laihui/doris/be/src/vec/exec/format/csv/csv_reader.cpp:538:13
#7 0x559d90f388bb in
doris::vectorized::VFileScanner::_get_block_wrapped(doris::RuntimeState*,
doris::vectorized::Block*, bool*)
/mnt/disk1/laihui/doris/be/src/vec/exec/scan/vfile_scanner.cpp:306:13
#8 0x559d90f37222 in
doris::vectorized::VFileScanner::_get_block_impl(doris::RuntimeState*,
doris::vectorized::Block*, bool*)
/mnt/disk1/laihui/doris/be/src/vec/exec/scan/vfile_scanner.cpp:248:17
```
```
const uint8_t* delim_pos = find_col_sep_func(curr_start, curr_len,
_column_sep.c_str(), _column_sep_len);
```
curr_len should len - _idx rather than _column_sep_len.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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