[merged mm-nonmm-stable] fault-injection-skip-stacktrace-filtering-by-default.patch removed from -mm tree

[merged mm-nonmm-stable] fault-injection-skip-stacktrace-filtering-by-default.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: fault-injection: skip stacktrace filtering by default
has been removed from the -mm tree.  Its filename was
     fault-injection-skip-stacktrace-filtering-by-default.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Wei Yongjun <weiyongjun1@huawei.com>
Subject: fault-injection: skip stacktrace filtering by default
Date: Wed, 17 Aug 2022 08:03:30 +0000

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>
---

 lib/fault-inject.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/fault-inject.c~fault-injection-skip-stacktrace-filtering-by-default
+++ a/lib/fault-inject.c
@@ -74,7 +74,7 @@ static bool fail_stacktrace(struct fault
 	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);
_

Patches currently in -mm which might be from weiyongjun1@huawei.com are

[merged mm-nonmm-stable] fault-injection-skip-stacktrace-filtering-by-default.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: fault-injection: skip stacktrace filtering by default
has been removed from the -mm tree.  Its filename was
     fault-injection-skip-stacktrace-filtering-by-default.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Wei Yongjun <weiyongjun1@huawei.com>
Subject: fault-injection: skip stacktrace filtering by default
Date: Wed, 17 Aug 2022 08:03:30 +0000

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>
---

 lib/fault-inject.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/fault-inject.c~fault-injection-skip-stacktrace-filtering-by-default
+++ a/lib/fault-inject.c
@@ -71,7 +71,7 @@ static bool fail_stacktrace(struct fault
 	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);
_

Patches currently in -mm which might be from weiyongjun1@huawei.com are