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openSUSE:Leap:42.3:Update
perf.7936
perf-probe-fix-to-free-temporal-dwarf_frame.patch
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File perf-probe-fix-to-free-temporal-dwarf_frame.patch of Package perf.7936
From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Date: Wed, 18 Nov 2015 15:40:12 +0900 Subject: perf probe: Fix to free temporal Dwarf_Frame Git-commit: 05c8d802fa52ef17dbcce21c38b72b4a313eb036 Patch-mainline: v4.5-rc1 References: bsc#986927 Since dwarf_cfi_addrframe returns malloc'd Dwarf_Frame object, it has to be freed after it is used. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20151118064011.30709.65674.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Your Name <user@business.com> --- tools/perf/util/probe-finder.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 05012bb..1cab05a 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -683,21 +683,24 @@ static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf) ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1); if (ret <= 0 || nops == 0) { pf->fb_ops = NULL; + ret = 0; #if _ELFUTILS_PREREQ(0, 142) } else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa && pf->cfi != NULL) { - Dwarf_Frame *frame; + Dwarf_Frame *frame = NULL; if (dwarf_cfi_addrframe(pf->cfi, pf->addr, &frame) != 0 || dwarf_frame_cfa(frame, &pf->fb_ops, &nops) != 0) { pr_warning("Failed to get call frame on 0x%jx\n", (uintmax_t)pf->addr); - return -ENOENT; + ret = -ENOENT; } + free(frame); #endif } /* Call finder's callback handler */ - ret = pf->callback(sc_die, pf); + if (ret >= 0) + ret = pf->callback(sc_die, pf); /* *pf->fb_ops will be cached in libdw. Don't free it. */ pf->fb_ops = NULL;
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