diff options
| author | Wei Yongjun <[email protected]> | 2022-08-17 08:03:30 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-12-15 16:40:43 -0800 |
| commit | 4acb9e5139f20c79eb08a95dc5a28186ae7a5088 (patch) | |
| tree | 7efa51f1fe4b75261af8ab091e8bd614f94bed14 | |
| parent | a7ebbbb159c181c696770feeb89bf0334aaff6d8 (diff) | |
fault-injection: skip stacktrace filtering by default
If FAULT_INJECTION_STACKTRACE_FILTER is enabled, the depth is default to
32. This means fail_stacktrace() will iter each entry's stacktrace, even
if filter is not configured.
This patch changes to quick return from fail_stacktrace() if stacktrace
filter is not set.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Wei Yongjun <[email protected]>
Cc: Akinobu Mita <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Isabella Basso <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Miguel Ojeda <[email protected]>
Cc: Nathan Chancellor <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | lib/fault-inject.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/fault-inject.c b/lib/fault-inject.c index 1421818c9ef7..fecc4d8ca32a 100644 --- a/lib/fault-inject.c +++ b/lib/fault-inject.c @@ -71,7 +71,7 @@ static bool fail_stacktrace(struct fault_attr *attr) int n, nr_entries; bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX); - if (depth == 0) + if (depth == 0 || (found && !attr->reject_start && !attr->reject_end)) return found; nr_entries = stack_trace_save(entries, depth, 1); |