vfio: selftests: Avoid VLAs

Browse source

Allocate VFIO ioctl requests dynamically instead of using VLAs. GCC 11.5.0
rejects initialized VLAs with:

  error: variable-sized object may not be initialized

The replaced stack u8 arrays also do not guarantee native struct alignment
for the aliased pointers.

Fixes: 19faf6fd96 ("vfio: selftests: Add a helper library for VFIO selftests")
Fixes: 20face8c75 ("vfio: selftests: Add helper to set/override a vf_token")
Assisted-by: Codex:gpt-5.5-high
Reviewed-by: Vipin Sharma <vipinsh@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Alex Mastro <amastro@fb.com>
Link: https://lore.kernel.org/r/20260617-scratch-amastro-vfio-selftests-avoid-vlas-v4-2-b9f52f1e2c5a@fb.com
Signed-off-by: Alex Williamson <alex@shazbot.org>

...

This commit is contained in:

Alex Mastro 2026-06-17 11:58:01 -07:00 • committed by Alex Williamson

parent bc4be8c6fd

commit 6bc73befe1

1 changed files with 15 additions and 11 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

26

tools/testing/selftests/vfio/lib/vfio_pci_device.c

View file