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Ankit Khushwaha 216158f063 selftests/user_events: fix type cast for write_index packed member in perf_test 
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, &reg.write_index,
      |                                             ^~~~~~~~~~~~~~~

Since write(2) works with any alignment. Casting '&reg.write_index'
explicitly to 'void *' to suppress this warning.

Link: https://lkml.kernel.org/r/20251106095532.15185-1-ankitkhushwaha.linux@gmail.com
Fixes: 42187bdc3c ("selftests/user_events: Add perf self-test for empty arguments events")
Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>
Cc: Beau Belgrave <beaub@linux.microsoft.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: sunliming <sunliming@kylinos.cn>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
History 2025-11-15 10:52:02 -08:00
..
crypto/chacha20-s390 crypto: lib/chacha - strongly type the ChaCha state 2025-05-12 13:32:53 +08:00
cxl Merge branch 'for-6.18/cxl-delay-dport' into cxl-for-next 2025-09-18 14:34:51 -07:00
fault-injection failcmd: make failcmd.sh executable 2024-09-01 20:43:32 -07:00
ktest ktest.pl: Add new PATCHCHECK_SKIP option to skip testing individual commits 2025-07-29 09:30:08 -04:00
kunit kunit: qemu_configs: Add MIPS configurations 2025-09-15 10:30:07 -06:00
memblock memblock: add MEMBLOCK_RSRV_KERN flag 2025-05-12 23:50:38 -07:00
nvdimm nvdimm: ndtest: Return -ENOMEM if devm_kcalloc() fails in ndtest_probe() 2025-09-25 12:49:46 -05:00
radix-tree Patch series in this pull request: 2025-10-02 18:44:54 -07:00
rbtree lib/interval_tree: add test case for span iteration 2025-03-17 12:17:01 -07:00
scatterlist mm: remove nth_page() 2025-09-21 14:22:10 -07:00
selftests selftests/user_events: fix type cast for write_index packed member in perf_test 2025-11-15 10:52:02 -08:00
shared Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
vma Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
vsock vsock/test: Remove redundant semicolons 2025-08-29 19:10:52 -07:00