This is a note to let you know that I've just added the patch titled perf symbols: Fix return value when loading PE DSO to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-symbols-fix-return-value-when-loading-pe-dso.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 35b7a36cb04e0e34414baa13d96b211110e997d6 Author: Nicholas Fraser <nfraser@xxxxxxxxxxxxxxx> Date: Wed Feb 10 14:18:02 2021 -0500 perf symbols: Fix return value when loading PE DSO [ Upstream commit 77771a97011fa9146ccfaf2983a3a2885dc57b6f ] The first time dso__load() was called on a PE file it always returned -1 error. This caused the first call to map__find_symbol() to always fail on a PE file so the first sample from each PE file always had symbol <unknown>. Subsequent samples succeed however because the DSO is already loaded. This fixes dso__load() to return 0 when successfully loading a DSO with libbfd. Fixes: eac9a4342e5447ca ("perf symbols: Try reading the symbol table with libbfd") Signed-off-by: Nicholas Fraser <nfraser@xxxxxxxxxxxxxxx> Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Frank Ch. Eigler <fche@xxxxxxxxxx> Cc: Huw Davies <huw@xxxxxxxxxxxxxxx> Cc: Ian Rogers <irogers@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Kim Phillips <kim.phillips@xxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Remi Bernon <rbernon@xxxxxxxxxxxxxxx> Cc: Song Liu <songliubraving@xxxxxx> Cc: Tommi Rantala <tommi.t.rantala@xxxxxxxxx> Cc: Ulrich Czekalla <uczekalla@xxxxxxxxxxxxxxx> Link: http://lore.kernel.org/lkml/1671b43b-09c3-1911-dbf8-7f030242fbf7@xxxxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 1645fb4ec9ed4..7dcf3327c5f7d 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1866,8 +1866,10 @@ int dso__load(struct dso *dso, struct map *map) if (nsexit) nsinfo__mountns_enter(dso->nsinfo, &nsc); - if (bfdrc == 0) + if (bfdrc == 0) { + ret = 0; break; + } if (!is_reg || sirc < 0) continue;