Commit-ID: 52f9ddba516214a59fdd8eb155b2583ab314dc31 Gitweb: http://git.kernel.org/tip/52f9ddba516214a59fdd8eb155b2583ab314dc31 Author: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx> AuthorDate: Fri, 10 Aug 2012 15:22:51 -0700 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Mon, 13 Aug 2012 12:56:45 -0300 perf symbols: Don't try to synthesize plt without dynstr If .dynsym exists but .dynstr is empty (NO_BITS or size==0), a segfault occurs. Avoid this by checking that .dynstr is not empty. Signed-off-by: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx> Cc: David Hansen <dave@xxxxxxxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Matt Hellsley <matthltc@xxxxxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1344637382-22789-6-git-send-email-cody@xxxxxxxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/util/symbol-elf.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index e037609..a2e994e 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -232,6 +232,9 @@ int dso__synthesize_plt_symbols(struct dso *dso, char *name, struct map *map, if (symstrs == NULL) goto out_elf_end; + if (symstrs->d_size == 0) + goto out_elf_end; + nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; plt_offset = shdr_plt.sh_offset; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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