perf/core: Fix error handling in perf_event_alloc()
authorDan Carpenter <dan.carpenter@oracle.com>
Mon, 22 May 2017 09:04:18 +0000 (12:04 +0300)
committerIngo Molnar <mingo@kernel.org>
Tue, 23 May 2017 07:50:05 +0000 (09:50 +0200)
commit36cc2b9222b5106de34085c4dd8635ac67ef5cba
tree6f6d4e2b9be6597b30bac40156ff01954fc904ca
parent85c617abc786d7da9e95c0b4174159864dd3f85c
perf/core: Fix error handling in perf_event_alloc()

We don't set an error code here which means that perf_event_alloc()
returns ERR_PTR(0) (in other words NULL).  The callers are not expecting
that and would Oops.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 375637bc5249 ("perf/core: Introduce address range filtering")
Link: http://lkml.kernel.org/r/20170522090418.hvs6icgpdo53wkn5@mwanda
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/events/core.c