From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Mon, 19 Jul 2021 10:54:24 +0000 (+0300)
Subject: lib: data-stack - t_try_realloc() - Add missing data_stack_last_buffer_reset() call
X-Git-Tag: 2.3.17~330
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5bd95c2ba90a414bb76fe5f4a63dd47317d5807e;p=thirdparty%2Fdovecot%2Fcore.git

lib: data-stack - t_try_realloc() - Add missing data_stack_last_buffer_reset() call

This fixes incorrect "buffer overflow" panics with DEBUG builds.
---

diff --git a/src/lib/data-stack.c b/src/lib/data-stack.c
index 59d268d91b..c0c52b6850 100644
--- a/src/lib/data-stack.c
+++ b/src/lib/data-stack.c
@@ -541,6 +541,7 @@ t_try_realloc(void *mem, size_t size)
 	if (unlikely(size == 0 || size > SSIZE_T_MAX))
 		i_panic("Trying to allocate %zu bytes", size);
 	block_canary_check(current_block);
+	data_stack_last_buffer_reset(TRUE);
 
 	last_alloc_size = current_frame->last_alloc_size;