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-rw-r--r--tools/perf/util/symbol-elf.c33
1 files changed, 30 insertions, 3 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 4e59ddeb4eda..e7ee47f7377a 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -10,8 +10,9 @@
#include "demangle-rust.h"
#include "machine.h"
#include "vdso.h"
-#include <symbol/kallsyms.h>
#include "debug.h"
+#include "sane_ctype.h"
+#include <symbol/kallsyms.h>
#ifndef EM_AARCH64
#define EM_AARCH64 183 /* ARM 64 bit */
@@ -390,6 +391,11 @@ out_elf_end:
return 0;
}
+char *dso__demangle_sym(struct dso *dso, int kmodule, char *elf_name)
+{
+ return demangle_sym(dso, kmodule, elf_name);
+}
+
/*
* Align offset to 4 bytes as needed for note name and descriptor data.
*/
@@ -1828,7 +1834,7 @@ void kcore_extract__delete(struct kcore_extract *kce)
static int populate_sdt_note(Elf **elf, const char *data, size_t len,
struct list_head *sdt_notes)
{
- const char *provider, *name;
+ const char *provider, *name, *args;
struct sdt_note *tmp = NULL;
GElf_Ehdr ehdr;
GElf_Addr base_off = 0;
@@ -1887,6 +1893,25 @@ static int populate_sdt_note(Elf **elf, const char *data, size_t len,
goto out_free_prov;
}
+ args = memchr(name, '\0', data + len - name);
+
+ /*
+ * There is no argument if:
+ * - We reached the end of the note;
+ * - There is not enough room to hold a potential string;
+ * - The argument string is empty or just contains ':'.
+ */
+ if (args == NULL || data + len - args < 2 ||
+ args[1] == ':' || args[1] == '\0')
+ tmp->args = NULL;
+ else {
+ tmp->args = strdup(++args);
+ if (!tmp->args) {
+ ret = -ENOMEM;
+ goto out_free_name;
+ }
+ }
+
if (gelf_getclass(*elf) == ELFCLASS32) {
memcpy(&tmp->addr, &buf, 3 * sizeof(Elf32_Addr));
tmp->bit32 = true;
@@ -1898,7 +1923,7 @@ static int populate_sdt_note(Elf **elf, const char *data, size_t len,
if (!gelf_getehdr(*elf, &ehdr)) {
pr_debug("%s : cannot get elf header.\n", __func__);
ret = -EBADF;
- goto out_free_name;
+ goto out_free_args;
}
/* Adjust the prelink effect :
@@ -1923,6 +1948,8 @@ static int populate_sdt_note(Elf **elf, const char *data, size_t len,
list_add_tail(&tmp->note_list, sdt_notes);
return 0;
+out_free_args:
+ free(tmp->args);
out_free_name:
free(tmp->name);
out_free_prov: