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Date: Tue, 29 Jan 2019 12:36:31 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Martin Vuille <jpmv27@....com>, Adrian Hunter <adrian.hunter@...el.com>, David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, Wang Nan <wangnan0@...wei.com>, Arnaldo Carvalho de Melo <acme@...hat.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.9 36/44] perf unwind: Unwind with libdw doesnt take symfs into account 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 3d20c6246690219881786de10d2dda93f616d0ac ] Path passed to libdw for unwinding doesn't include symfs path if specified, so unwinding fails because ELF file is not found. Similar to unwinding with libunwind, pass symsrc_filename instead of long_name. If there is no symsrc_filename, fallback to long_name. Signed-off-by: Martin Vuille <jpmv27@....com> Cc: Adrian Hunter <adrian.hunter@...el.com> Cc: David Ahern <dsahern@...il.com> Cc: Jiri Olsa <jolsa@...nel.org> Cc: Namhyung Kim <namhyung@...nel.org> Cc: Wang Nan <wangnan0@...wei.com> Link: http://lkml.kernel.org/r/20180211212420.18388-1-jpmv27@aim.com Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- tools/perf/util/unwind-libdw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c index b46e1cf347e5..b34085ae3e32 100644 --- a/tools/perf/util/unwind-libdw.c +++ b/tools/perf/util/unwind-libdw.c @@ -48,7 +48,7 @@ static int __report_module(struct addr_location *al, u64 ip, if (!mod) mod = dwfl_report_elf(ui->dwfl, dso->short_name, - dso->long_name, -1, al->map->start, + (dso->symsrc_filename ? dso->symsrc_filename : dso->long_name), -1, al->map->start, false); return mod && dwfl_addrmodule(ui->dwfl, ip) == mod ? 0 : -1; -- 2.19.1
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