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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:15:15 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:15:15 +0000 |
| commit | 68c1b0995e963349e50f8a8b00ebc140908f7882 (patch) | |
| tree | ae3788542761985ee15e3d1ca439706040d1eb0c /kernel/trace/trace_events_hist.c | |
| parent | Releasing progress-linux version 4.19.269-1progress5u1. (diff) | |
| download | linux-68c1b0995e963349e50f8a8b00ebc140908f7882.tar.xz linux-68c1b0995e963349e50f8a8b00ebc140908f7882.zip | |
Merging upstream version 4.19.282.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 48f85dab9..455cf41ae 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1764,6 +1764,9 @@ static const char *hist_field_name(struct hist_field *field, { const char *field_name = ""; + if (WARN_ON_ONCE(!field)) + return field_name; + if (level > 1) return field_name; @@ -2314,6 +2317,8 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, unsigned long fl = flags & ~HIST_FIELD_FL_LOG2; hist_field->fn = hist_field_log2; hist_field->operands[0] = create_hist_field(hist_data, field, fl, NULL); + if (!hist_field->operands[0]) + goto free; hist_field->size = hist_field->operands[0]->size; hist_field->type = kstrdup(hist_field->operands[0]->type, GFP_KERNEL); if (!hist_field->type) @@ -5807,7 +5812,7 @@ enable: /* Just return zero, not the number of registered triggers */ ret = 0; out: - if (ret == 0) + if (ret == 0 && glob[0]) hist_err_clear(); return ret; |