From: Arnaldo Carvalho de Melo <a...@redhat.com>

[ Upstream commit a66fa0619a0ae3585ef09e9c33ecfb5c7c6cb72b ]

The callers of symbol__annotate2() use symbol__strerror_disassemble() to
convert its failure returns into a human readable string, so
propagate error values from functions it calls, starting with
perf_env__arch() that when fails the right thing to do is to look at
'errno' to see why its possible call to uname() failed.

Reported-by: Russell King - ARM Linux admin <li...@armlinux.org.uk>
Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>,
Cc: Will Deacon <w...@kernel.org>
Link: https://lkml.kernel.org/n/tip-it5d83kyusfhb1q1b0l4p...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 tools/perf/util/annotate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index daea1fdf73856..4ef62bcdc80f0 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1871,7 +1871,7 @@ int symbol__annotate(struct symbol *sym, struct map *map,
        int err;
 
        if (!arch_name)
-               return -1;
+               return errno;
 
        args.arch = arch = arch__find(arch_name);
        if (arch == NULL)
-- 
2.20.1

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