Patch "perf annotate: Don't throw error for zero length symbols" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

perf annotate: Don't throw error for zero length symbols

to the 4.9-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-annotate-don-t-throw-error-for-zero-length-symbols.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Ravi Bangoria <[email protected]>
Date: Tue, 22 Nov 2016 14:10:50 +0530
Subject: perf annotate: Don't throw error for zero length symbols

From: Ravi Bangoria <[email protected]>

commit edee44be59190bf22d5c6e521f3852b7ff16862f upstream.

'perf report --tui' exits with error when it finds a sample of zero length symbol (i.e. addr == sym->start == sym->end). Actually these are valid samples. Don't exit TUI and show report with such symbols.

---
 tools/perf/util/annotate.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -593,7 +593,8 @@ static int __symbol__inc_addr_samples(st
 
 	pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 
-	if (addr < sym->start || addr >= sym->end) {
+	if ((addr < sym->start || addr >= sym->end) &&
+	    (addr != sym->end || sym->start != sym->end)) {
 		pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 		       __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 		return -ERANGE;

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/perf-annotate-don-t-throw-error-for-zero-length-symbols.patch