selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test.patch removed from -mm tree
The quilt patch titled
Subject: selftests/user_events: fix type cast for write_index packed member in perf_test
has been removed from the -mm tree. Its filename was
selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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From: Ankit Khushwaha <[email protected]>
Subject: selftests/user_events: fix type cast for write_index packed member in perf_test
Date: Thu, 6 Nov 2025 15:25:32 +0530
Accessing 'reg.write_index' directly triggers a -Waddress-of-packed-member warning due to potential unaligned pointer access:
perf_test.c:239:38: warning: taking address of packed member 'write_index' of class or structure 'user_reg' may result in an unaligned pointer value [-Waddress-of-packed-member]
239 | ASSERT_NE(-1, write(self->data_fd, ®.write_index,
| ^~~~~~~~~~~~~~~
Since write(2) works with any alignment. Casting '®.write_index' explicitly to 'void *' to suppress this warning.
---
tools/testing/selftests/user_events/perf_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
tools/testing/selftests/user_events/perf_test.c renamed from tools/testing/selftests/user_events/perf_test.c~selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test +1 -1
@@ -236,7 +236,7 @@ TEST_F(user, perf_empty_events) {ASSERT_EQ (1 << reg.enable_bit, self->check);/* Ensure write shows up at correct offset */ -ASSERT_NE (-1 ,write (self->data_fd, ®.write_index, +ASSERT_NE (-1 ,write (self->data_fd, (void *)®.write_index,sizeof (reg.write_index))); val = (void *)(((char *)perf_page) + perf_page->data_offset);ASSERT_EQ (PERF_RECORD_SAMPLE , *val);
_
Patches currently in -mm which might be from [email protected] are
selftest-mm-fix-pointer-comparison-in-mremap_test.patch