[PATCH net-next v3 0/4] netconsole: selftest for userdata overflow

[Breno Leitao <leitao@debian.org>]

Implement comprehensive testing for netconsole userdata entry handling,
demonstrating correct behavior when creating maximum entries and
preventing unauthorized overflow.

Refactor existing test infrastructure to support modular, reusable
helper functions that validate strict entry limit enforcement.

Also, add a warning if update_userdata() sees more than
MAX_USERDATA_ITEMS entries. This shouldn't happen and it is a bug that
shouldn't be silently ignored.

Signed-off-by: Breno Leitao <leitao@debian.org>
---
Changes in v3:
- Added the new shell helpers files in the TEST_INCLUDES (Jakub)
- Link to v2: https://lore.kernel.org/r/20250103-netcons_overflow_test-v2-0-a49f9be64c21@debian.org

Changes in v2:
- Add the new script (netcons_overflow.sh) in
  tools/testing/selftests/drivers/net/Makefile as suggested by Simon
  Horman
- Link to v1: https://lore.kernel.org/r/20241204-netcons_overflow_test-v1-0-a85a8d0ace21@debian.org

---
Breno Leitao (4):
      netconsole: Warn if MAX_USERDATA_ITEMS limit is exceeded
      netconsole: selftest: Split the helpers from the selftest
      netconsole: selftest: Delete all userdata keys
      netconsole: selftest: verify userdata entry limit

 MAINTAINERS                                        |   3 +-
 drivers/net/netconsole.c                           |   2 +-
 tools/testing/selftests/drivers/net/Makefile       |   2 +
 .../selftests/drivers/net/lib/sh/lib_netcons.sh    | 225 +++++++++++++++++++++
 .../testing/selftests/drivers/net/netcons_basic.sh | 218 +-------------------
 .../selftests/drivers/net/netcons_overflow.sh      |  67 ++++++
 6 files changed, 298 insertions(+), 219 deletions(-)
---
base-commit: 7bf1659bad4e9413cdba132ef9cbd0caa9cabcc4
change-id: 20241204-netcons_overflow_test-eaf735d1f743

Best regards,
-- 
Breno Leitao <leitao@debian.org>