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Code Releases Activity

Fixed cold page cache leak

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The empty_pages pointer wasn't being propagated into the ->next pointer
when more empty_pages were to be stored
This commit is contained in:
Maria Matejka 2023-05-03 18:59:52 +02:00
parent ed91d884d3
commit 1e998a4349
1 changed files with 7 additions and 4 deletions
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11
sysdep/unix/alloc.c
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@ -282,10 +282,13 @@ page_cleanup(void *_ UNUSED)
if (!empty_pages || (empty_pages->pos == EP_POS_MAX))
{
/* There is either no pointer block or the last block is full. We use this block as a pointer block. */
empty_pages = (struct empty_pages *) fp;
UNPROTECT_PAGE(empty_pages);
*empty_pages = (struct empty_pages) {};
PROTECT_PAGE(empty_pages);
struct empty_pages *ep = (struct empty_pages *) fp;
UNPROTECT_PAGE(ep);
*ep = (struct empty_pages) {
.next = empty_pages,
};
PROTECT_PAGE(ep);
empty_pages = ep;
}
else
{