From: Cody P Schafer <[email protected]> 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 <[email protected]> Cc: David Hansen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Matt Hellsley <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sukadev Bhattiprolu <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- 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; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
