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| author | Sergei Petrunia <psergey@askmonty.org> | 2020-01-12 20:50:12 +0200 |
|---|---|---|
| committer | Sergei Petrunia <psergey@askmonty.org> | 2020-01-14 18:15:32 +0300 |
| commit | 5e5ae51b730aa67f9efb87af4f4921309eac51f1 (patch) | |
| tree | c4f5bfbf4a0c73e90a3b935caedc2c6dc943c10d /sql/sql_prepare.cc | |
| parent | cb204e11eaf4c473ce5d5a10a21de147430057dc (diff) | |
| download | mariadb-git-5e5ae51b730aa67f9efb87af4f4921309eac51f1.tar.gz | |
MDEV-21341: Fix UBSAN failures: Issue Six
(Variant #2 of the patch, which keeps the sp_head object inside the
MEM_ROOT that sp_head object owns)
(10.3 requires extra work due to sp_package, will commit a separate
patch for it)
sp_head::operator new() and operator delete() were dereferencing sp_head*
pointers to memory that didn't hold a valid sp_head object (it was
not created/already destroyed).
This caused UBSan to crash when looking up type information.
Fixed by providing static sp_head::create() and sp_head::destroy() methods.
Diffstat (limited to 'sql/sql_prepare.cc')
| -rw-r--r-- | sql/sql_prepare.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 2c6aeda794a..f5adaeaa956 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -3607,7 +3607,7 @@ Prepared_statement::~Prepared_statement() free_items(); if (lex) { - delete lex->sphead; + sp_head::destroy(lex->sphead); delete lex->result; delete (st_lex_local *) lex; } |