mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 08:46:45 +07:00
perf annotate: Fix a bug following symbolic link of a build-id file
It is wrong way to read link name from a build-id file. Because a
build-id file is not anymore a symbolic link but build-id directory of
it is symbolic link, so fix it.
For example, if build-id file name gotten from
dso__build_id_filename() is as below,
/root/.debug/.build-id/4f/75c7d197c951659d1c1b8b5fd49bcdf8f3f8b1/elf
To correctly read link name of build-id, use the build-id dir path that
is a symbolic link, instead of the above build-id file name like below.
/root/.debug/.build-id/4f/75c7d197c951659d1c1b8b5fd49bcdf8f3f8b1
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1490598638-13947-2-git-send-email-treeze.taeung@gmail.com
Fixes: 01412261d9
("perf buildid-cache: Use path/to/bin/buildid/elf instead of path/to/bin/buildid")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
5dfa210e40
commit
6ebd2547dd
@ -1307,6 +1307,7 @@ static int dso__disassemble_filename(struct dso *dso, char *filename, size_t fil
|
||||
{
|
||||
char linkname[PATH_MAX];
|
||||
char *build_id_filename;
|
||||
char *build_id_path = NULL;
|
||||
|
||||
if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
|
||||
!dso__is_kcore(dso))
|
||||
@ -1322,8 +1323,14 @@ static int dso__disassemble_filename(struct dso *dso, char *filename, size_t fil
|
||||
goto fallback;
|
||||
}
|
||||
|
||||
build_id_path = strdup(filename);
|
||||
if (!build_id_path)
|
||||
return -1;
|
||||
|
||||
dirname(build_id_path);
|
||||
|
||||
if (dso__is_kcore(dso) ||
|
||||
readlink(filename, linkname, sizeof(linkname)) < 0 ||
|
||||
readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
|
||||
strstr(linkname, DSO__NAME_KALLSYMS) ||
|
||||
access(filename, R_OK)) {
|
||||
fallback:
|
||||
@ -1335,6 +1342,7 @@ static int dso__disassemble_filename(struct dso *dso, char *filename, size_t fil
|
||||
__symbol__join_symfs(filename, filename_size, dso->long_name);
|
||||
}
|
||||
|
||||
free(build_id_path);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user