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em' style='width: 3.8%;'/> -rw-r--r--kernel/kallsyms.c26
-rw-r--r--kernel/modsign_certificate.S13
-rw-r--r--kernel/module.c18
4 files changed, 34 insertions, 25 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index d1574d47cf27..271fd3119af9 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -176,7 +176,7 @@ signing_key.priv signing_key.x509: x509.genkey
openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
-batch -x509 -config x509.genkey \
-outform DER -out signing_key.x509 \
- -keyout signing_key.priv
+ -keyout signing_key.priv 2>&1
@echo "###"
@echo "### Key pair generated."
@echo "###"
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 2169feeba529..3127ad52cdb2 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -84,9 +84,11 @@ static int is_ksym_addr(unsigned long addr)
/*
* Expand a compressed symbol data into the resulting uncompressed string,
+ * if uncompressed string is too long (>= maxlen), it will be truncated,
* given the offset to where the symbol is in the compressed stream.
*/
-static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
+static unsigned int kallsyms_expand_symbol(unsigned int off,
+ char *result, size_t maxlen)
{
int len, skipped_first = 0;
const u8 *tptr, *data;
@@ -113,15 +115,20 @@ static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
while (*tptr) {
if (skipped_first) {
+ if (maxlen <= 1)
+ goto tail;
*result = *tptr;
result++;
+ maxlen--;
} else
skipped_first = 1;
tptr++;
}
}
- *result = '\0';
+tail:
+ if (maxlen)
+ *result = '\0';
/* Return to offset to the next symbol. */
return off;
@@ -176,7 +183,7 @@ unsigned long kallsyms_lookup_name(const char *name)
unsigned int off;
for (i = 0, off = 0; i < kallsyms_num_syms; i++) {
- off = kallsyms_expand_symbol(off, namebuf);
+ off = kallsyms_expand_symbol(off, namebuf, ARRAY_SIZE(namebuf));
if (strcmp(namebuf, name) == 0)
return kallsyms_addresses[i];
@@ -195,7 +202,7 @@ int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *,
int ret;
for (i = 0, off = 0; i < kallsyms_num_syms; i++) {
- off = kallsyms_expand_symbol(off, namebuf);
+ off = kallsyms_expand_symbol(off, namebuf, ARRAY_SIZE(namebuf));
ret = fn(data, namebuf, NULL, kallsyms_addresses[i]);
if (ret != 0)
return ret;
@@ -294,7 +301,8 @@ const char *kallsyms_lookup(unsigned long addr,
pos = get_symbol_pos(addr, symbolsize, offset);
/* Grab name */
- kallsyms_expand_symbol(get_symbol_offset(pos), namebuf);
+ kallsyms_expand_symbol(get_symbol_offset(pos),
+ namebuf, KSYM_NAME_LEN);
if (modname)
*modname = NULL;
return namebuf;
@@ -315,7 +323,8 @@ int lookup_symbol_name(unsigned long addr, char *symname)
pos = get_symbol_pos(addr, NULL, NULL);
/* Grab name */
- kallsyms_expand_symbol(get_symbol_offset(pos), symname);