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-rw-r--r--tools/perf/util/symbol.c68
1 files changed, 43 insertions, 25 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index eec196329fd9..469c0264ed29 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1504,6 +1504,17 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
dso->adjust_symbols = 0;
if (strncmp(dso->name, "/tmp/perf-", 10) == 0) {
+ struct stat st;
+
+ if (lstat(dso->name, &st) < 0)
+ return -1;
+
+ if (st.st_uid && (st.st_uid != geteuid())) {
+ pr_warning("File %s not owned by current user or root, "
+ "ignoring it.\n", dso->name);
+ return -1;
+ }
+
ret = dso__load_perf_map(dso, map, filter);
dso->symtab_type = ret > 0 ? SYMTAB__JAVA_JIT :
SYMTAB__NOT_FOUND;
@@ -2170,27 +2181,22 @@ size_t machines__fprintf_dsos_buildid(struct rb_root *machines,
return ret;
}
-struct dso *dso__new_kernel(const char *name)
+static struct dso*
+dso__kernel_findnew(struct machine *machine, const char *name,
+ const char *short_name, int dso_type)
{
- struct dso *dso = dso__new(name ?: "[kernel.kallsyms]");
-
- if (dso != NULL) {
- dso__set_short_name(dso, "[kernel]");
- dso->kernel = DSO_TYPE_KERNEL;
- }
-
- return dso;
-}
+ /*
+ * The kernel dso could be created by build_id processing.
+ */
+ struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name);
-static struct dso *dso__new_guest_kernel(struct machine *machine,
- const char *name)
-{
- char bf[PATH_MAX];
- struct dso *dso = dso__new(name ?: machine__mmap_name(machine, bf,
- sizeof(bf)));
+ /*
+ * We need to run this in all cases, since during the build_id
+ * processing we had no idea this was the kernel dso.
+ */
if (dso != NULL) {
- dso__set_short_name(dso, "[guest.kernel]");
- dso->kernel = DSO_TYPE_GUEST_KERNEL;
+ dso__set_short_name(dso, short_name);
+ dso->kernel = dso_type;
}
return dso;
@@ -2208,24 +2214,36 @@ void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine)
dso->has_build_id = true;
}
-static struct dso *machine__create_kernel(struct machine *machine)
+static struct dso *machine__get_kernel(struct machine *machine)
{
const char *vmlinux_name = NULL;
struct dso *kernel;
if (machine__is_host(machine)) {
vmlinux_name = symbol_conf.vmlinux_name;
- kernel = dso__new_kernel(vmlinux_name);
+ if (!vmlinux_name)
+ vmlinux_name = "[kernel.kallsyms]";
+
+ kernel = dso__kernel_findnew(machine, vmlinux_name,
+ "[kernel]",
+ DSO_TYPE_KERNEL);
} else {
+ char bf[PATH_MAX];
+
if (machine__is_default_guest(machine))
vmlinux_name = symbol_conf.default_guest_vmlinux_name;
- kernel = dso__new_guest_kernel(machine, vmlinux_name);
+ if (!vmlinux_name)
+ vmlinux_name = machine__mmap_name(machine, bf,
+ sizeof(bf));
+
+ kernel = dso__kernel_findnew(machine, vmlinux_name,
+ "[guest.kernel]",
+ DSO_TYPE_GUEST_KERNEL);
}
- if (kernel != NULL) {
+ if (kernel != NULL && (!kernel->has_build_id))
dso__read_running_kernel_build_id(kernel, machine);
- dsos__add(&machine->kernel_dsos, kernel);
- }
+
return kernel;
}
@@ -2329,7 +2347,7 @@ void machine__destroy_kernel_maps(struct machine *machine)
int machine__create_kernel_maps(struct machine *machine)
{
- struct dso *kernel = machine__create_kernel(machine);
+ struct dso *kernel = machine__get_kernel(machine);
if (kernel == NULL ||
__machine__create_kernel_maps(machine, kernel) < 0)