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authorSam Ravnborg <sam@mars.ravnborg.org>2006-07-01 10:10:19 +0200
committerSam Ravnborg <sam@mars.ravnborg.org>2006-07-01 10:10:19 +0200
commit534b89a9f6a86a28300cd71619112c4bbca7c0ae (patch)
treebdde1be43f714e671f83f860f528f1065f597d98 /scripts/mod
parent66392c4f2246641c13b5dc60d15b09a71e09276f (diff)
downloadkernel-534b89a9f6a86a28300cd71619112c4bbca7c0ae.tar.gz
kbuild: fix segv in modpost
Parsing an old Modules.symvers file casued modpost to SEGV. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/modpost.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 0dd16177642d..65411665e13c 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -205,6 +205,8 @@ static const char *export_str(enum export ex)
static enum export export_no(const char * s)
{
int i;
+ if (!s)
+ return export_unknown;
for (i = 0; export_list[i].export != export_unknown; i++) {
if (strcmp(export_list[i].str, s) == 0)
return export_list[i].export;
@@ -1271,7 +1273,7 @@ static void write_if_changed(struct buffer *b, const char *fname)
}
/* parse Module.symvers file. line format:
- * 0x12345678<tab>symbol<tab>module[<tab>export]
+ * 0x12345678<tab>symbol<tab>module[[<tab>export]<tab>something]
**/
static void read_dump(const char *fname, unsigned int kernel)
{
@@ -1284,7 +1286,7 @@ static void read_dump(const char *fname, unsigned int kernel)
return;
while ((line = get_next_line(&pos, file, size))) {
- char *symname, *modname, *d, *export;
+ char *symname, *modname, *d, *export, *end;
unsigned int crc;
struct module *mod;
struct symbol *s;
@@ -1297,7 +1299,8 @@ static void read_dump(const char *fname, unsigned int kernel)
*modname++ = '\0';
if ((export = strchr(modname, '\t')) != NULL)
*export++ = '\0';
-
+ if (export && ((end = strchr(export, '\t')) != NULL))
+ *end = '\0';
crc = strtoul(line, &d, 16);
if (*symname == '\0' || *modname == '\0' || *d != '\0')
goto fail;