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Masami Hiramatsu 0c188a07b6 perf probe: Fix a segfault if asked for variable it doesn't find 
Fix a segfault bug by asking for variable it doesn't find.
Since the convert_variable() didn't handle error code returned
from convert_variable_location(), it just passed an incomplete
variable field and then a segfault was occurred when formatting
the field.

This fixes that bug by handling success code correctly in
convert_variable(). Other callers of convert_variable_location()
are correctly checking the return code.

This bug was introduced by following commit. But another hidden
erroneous error handling has been there previously (-ENOMEM case).

 commit 3d918a12a1

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20140529105232.28251.30447.stgit@ltc230.yrl.intra.hitachi.co.jp
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
 		2014-06-04 14:48:03 +02:00
..
cgroup cgroups: fix cgroup_event_listener error handling 2013-01-08 10:00:44 -08:00
firewire tools/firewire: nosy-dump: check for allocation failure 2012-12-02 20:10:18 +01:00
hv Tools: hv: Handle the case when the target file exists correctly 2014-04-16 14:10:36 -07:00
include perf tools: Move hash.h header 2014-02-18 09:34:49 -03:00
lguest tools/lguest: offer VIRTIO_F_ANY_LAYOUT for net device. 2013-07-15 11:18:32 +09:30
lib Merge branch 'liblockdep-fixes-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux into perf/urgent 2014-05-11 07:23:23 +02:00
net bpf_dbg: fix wrong register usage 2014-04-30 16:12:22 -04:00
nfsd
…
perf perf probe: Fix a segfault if asked for variable it doesn't find 2014-06-04 14:48:03 +02:00
power tools/power/acpi: Minor bugfixes 2014-04-21 22:51:58 +02:00
scripts tools lib traceevent: Add global QUIET_CC_FPIC build output 2013-12-19 16:18:10 -03:00
testing This just contains a single update by Satoru Takeuchi, which adds 2014-04-04 21:27:43 -07:00
thermal/tmon tools/thermal: Introduce tmon, a tool for thermal subsystem 2013-11-07 08:45:34 +08:00
usb usb: tools: fix a regression issue that gcc can't link to pthread 2013-12-04 15:10:54 -08:00
virtio tools/virtio: add a missing ) 2014-03-13 11:23:25 +10:30
vm tools/vm/page-types.c: page-cache sniffing feature 2014-04-07 16:35:52 -07:00
Makefile tools/liblockdep: Build liblockdep from tools/Makefile 2014-05-08 13:34:45 -04:00