[PATCH 4.9 46/80] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

From: Greg Kroah-Hartman
Date: Thu May 18 2017 - 07:16:14 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Adrian Hunter <adrian.hunter@xxxxxxxxx>

commit c3a0bbc7ad7598dec5a204868bdf8a2b1b51df14 upstream.

Address filtering with kernel symbols incorrectly resulted in the error
"Cannot determine size of symbol" because the no_size logic was the wrong
way around.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Tested-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1490357752-27942-1-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
tools/perf/util/auxtrace.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1826,7 +1826,7 @@ static int addr_filter__resolve_kernel_s
filt->addr = start;
if (filt->range && !filt->size && !filt->sym_to) {
filt->size = size;
- no_size = !!size;
+ no_size = !size;
}
}

@@ -1840,7 +1840,7 @@ static int addr_filter__resolve_kernel_s
if (err)
return err;
filt->size = start + size - filt->addr;
- no_size = !!size;
+ no_size = !size;
}

/* The very last symbol in kallsyms does not imply a particular size */