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| author | Wei Yongjun <weiyongjun1@huawei.com> | 2022-08-17 10:03:30 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-16 01:40:43 +0100 |
| commit | 4acb9e5139f20c79eb08a95dc5a28186ae7a5088 (patch) | |
| tree | 7efa51f1fe4b75261af8ab091e8bd614f94bed14 /lib/fault-inject.c | |
| parent | fault-injection: allow stacktrace filter for x86-64 (diff) | |
| download | linux-4acb9e5139f20c79eb08a95dc5a28186ae7a5088.tar.xz linux-4acb9e5139f20c79eb08a95dc5a28186ae7a5088.zip | |
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/20220817080332.1052710-3-weiyongjun1@huawei.com
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Isabella Basso <isabbasso@riseup.net>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/fault-inject.c')
| -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); |