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authorJiri Olsa <jolsa@redhat.com>2014-03-02 14:32:07 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-03-10 11:17:14 -0300
commit155b3a13a65d4217316dbe094843f2a7df0711fa (patch)
tree50220eab009a1088fcc8b9de51dfb69e9845c536
parent02c5bb4a352a4cca56e9b5d3a2a57d61062eb2e1 (diff)
perf symbols: Fix crash in elf_section_by_name
Fixing crash in elf_section_by_name function caused by missing section name in elf binary. Reported-by: Albert Strasheim <albert@cloudflare.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Albert Strasheim <albert@cloudflare.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1393767127-599-1-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/util/symbol-elf.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 3e9f336740fa..516d19fb999b 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -151,15 +151,15 @@ Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
gelf_getshdr(sec, shp);
str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name);
- if (!strcmp(name, str)) {
+ if (str && !strcmp(name, str)) {
if (idx)
*idx = cnt;
- break;
+ return sec;
}
++cnt;
}
- return sec;
+ return NULL;
}
#define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \