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| author | Jiri Olsa <jolsa@kernel.org> | 2018-04-15 12:23:50 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-17 15:47:39 +0300 |
| commit | 78b562fbfa2cf0a9fcb23c3154756b690f4905c1 (patch) | |
| tree | 4b2a92fe7d29a3ee696b16d7f035c7ba88c1101c /kernel/events/callchain.c | |
| parent | 038586c34301578e538f6c5aa79ca82bce1b9152 (diff) | |
| download | linux-78b562fbfa2cf0a9fcb23c3154756b690f4905c1.tar.xz | |
perf: Return proper values for user stack errors
Return immediately when we find issue in the user stack checks. The
error value could get overwritten by following check for
PERF_SAMPLE_REGS_INTR.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: syzkaller-bugs@googlegroups.com
Cc: x86@kernel.org
Fixes: 60e2364e60e8 ("perf: Add ability to sample machine state on interrupt")
Link: http://lkml.kernel.org/r/20180415092352.12403-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/events/callchain.c')
0 files changed, 0 insertions, 0 deletions