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| author | Takashi Iwai <tiwai@suse.de> | 2024-12-20 14:09:45 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-12-20 14:09:45 +0100 |
| commit | 8cbd01ba9c38eb16f3a572300da486ac544519b7 (patch) | |
| tree | e9a800bcb96bf8e937ddf0d420514dccbc6c1a75 /kernel/trace/bpf_trace.c | |
| parent | 66a0a2b0473c39ae85c44628d14e4366fdc0aa0d (diff) | |
| parent | 32c9c06adb5b157ef259233775a063a43746d699 (diff) | |
| download | linux-8cbd01ba9c38eb16f3a572300da486ac544519b7.tar.gz linux-8cbd01ba9c38eb16f3a572300da486ac544519b7.tar.bz2 linux-8cbd01ba9c38eb16f3a572300da486ac544519b7.zip | |
Merge tag 'asoc-fix-v6.13-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.13
A mix of quirks and small fixes, nothing too major anywhere.
Diffstat (limited to 'kernel/trace/bpf_trace.c')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 949a3870946c..1b8db5aee9d3 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2250,6 +2250,9 @@ void perf_event_detach_bpf_prog(struct perf_event *event) goto unlock; old_array = bpf_event_rcu_dereference(event->tp_event->prog_array); + if (!old_array) + goto put; + ret = bpf_prog_array_copy(old_array, event->prog, NULL, 0, &new_array); if (ret < 0) { bpf_prog_array_delete_safe(old_array, event->prog); @@ -2258,6 +2261,14 @@ void perf_event_detach_bpf_prog(struct perf_event *event) bpf_prog_array_free_sleepable(old_array); } +put: + /* + * It could be that the bpf_prog is not sleepable (and will be freed + * via normal RCU), but is called from a point that supports sleepable + * programs and uses tasks-trace-RCU. + */ + synchronize_rcu_tasks_trace(); + bpf_prog_put(event->prog); event->prog = NULL; |