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Date: Thu, 9 Aug 2012 15:18:30 -0700 From: Cody P Schafer <cody@...ux.vnet.ibm.com> To: Arnaldo Carvalho de Melo <acme@...stprotocols.net> Cc: LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...hat.com>, Paul Mackerras <paulus@...ba.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>, Matt Hellsley <matthltc@...ibm.com>, David Hansen <dave@...ux.vnet.ibm.com> Subject: [PATCH 05/16] perf symbol: 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@...ux.vnet.ibm.com> --- tools/perf/util/symbol.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 254d4d8..8ae159a 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1077,6 +1077,9 @@ 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; -- 1.7.11.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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