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perf symbols: Check for valid dso before creating map

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dso__new() can return NULL. Hence verify dso before creating a new map.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20120531114656.23691.54223.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Srikar Dronamraju 2012-05-31 17:16:56 +05:30 committed by Arnaldo Carvalho de Melo
parent 37073f9e44
commit 378474e4b2
1 changed files with 4 additions and 1 deletions
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5
tools/perf/util/symbol.c
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@ -2817,8 +2817,11 @@ int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
struct map *dso__new_map(const char *name)
{
struct map *map = NULL;
struct dso *dso = dso__new(name);
struct map *map = map__new2(0, dso, MAP__FUNCTION);
if (dso)
map = map__new2(0, dso, MAP__FUNCTION);
return map;
}