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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-11-05 09:57:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-11-13 08:16:43 +0100 |
| commit | 697d877849d4b34ab58d7078d6930bad0ef6fc66 (patch) | |
| tree | 62852adce55f00522f4a58587d67a7755dfbcc49 /kernel/events/core.c | |
| parent | dce5affb94eb54edfff17727a6240a6a5d998666 (diff) | |
| download | linux-697d877849d4b34ab58d7078d6930bad0ef6fc66.tar.bz2 | |
perf/core: Consistently fail fork on allocation failures
Commit:
313ccb9615948 ("perf: Allocate context task_ctx_data for child event")
makes the inherit path skip over the current event in case of task_ctx_data
allocation failure. This, however, is inconsistent with allocation failures
in perf_event_alloc(), which would abort the fork.
Correct this by returning an error code on task_ctx_data allocation
failure and failing the fork in that case.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/20191105075702.60319-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 7655441065a9..466e333db1f3 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -11802,7 +11802,7 @@ inherit_event(struct perf_event *parent_event, GFP_KERNEL); if (!child_ctx->task_ctx_data) { free_event(child_event); - return NULL; + return ERR_PTR(-ENOMEM); } } |