[PATCH] perf symbols: symbol-minimal.c causes random fd to beclosed

[Anton Blanchard]

I hit a cryptic failure when testing a recent version
of perf:

  # perf report
  write failure on standard output: Bad file descriptor

The issue is in commit b68e2f91 (perf symbols: Introduce symsrc
structure). symsrc__destroy() does a close(ss->fd) but
ss->fd is only initialised in the symbol-elf.c case and
not for symbol-minimal.c.

The issue has been around for a while however most people
will build with libelf which wont use the symbol-minimal.c
code.

Cc: stable@xxxxxxxxxxxxxxx # v3.8+
Signed-off-by: Anton Blanchard <anton@xxxxxxxxx>
---

diff --git a/tools/perf/util/symbol-minimal.c b/tools/perf/util/symbol-minimal.c
index 2d2dd05..3528204 100644
--- a/tools/perf/util/symbol-minimal.c
+++ b/tools/perf/util/symbol-minimal.c
@@ -254,6 +254,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso __maybe_unused,
 		goto out_close;
 
 	ss->type = type;
+	ss->fd = fd;
 
 	return 0;
 out_close:
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/