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Improve HTML fuzzer stability

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Call htmlInitAutoClose during fuzzer initialization to fix stability
issue. Leave a note concerning problems with this function.
This commit is contained in:
Nick Wellnhofer
2021-02-22 12:25:29 +01:00
parent 09320f0551
commit de1b51eddc
2 changed files with 6 additions and 0 deletions
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4
HTMLparser.c
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@ -1324,6 +1324,10 @@ htmlCheckAutoClose(const xmlChar * newtag, const xmlChar * oldtag)
int i, indx; int i, indx;
const char **closed = NULL; const char **closed = NULL;
/*
* FIXME: This is not thread-safe and should be called from
* xmlInitParser instead.
*/
if (htmlStartCloseIndexinitialized == 0) if (htmlStartCloseIndexinitialized == 0)
htmlInitAutoClose(); htmlInitAutoClose();

2
fuzz/html.c
View File

@ -6,12 +6,14 @@
#include <libxml/HTMLparser.h> #include <libxml/HTMLparser.h>
#include <libxml/HTMLtree.h> #include <libxml/HTMLtree.h>
#include <libxml/parserInternals.h>
#include "fuzz.h" #include "fuzz.h"
int int
LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED, LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED,
char ***argv ATTRIBUTE_UNUSED) { char ***argv ATTRIBUTE_UNUSED) {
xmlInitParser(); xmlInitParser();
htmlInitAutoClose();
xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc); xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc);
return 0; return 0;