netdev - [PATCH net-next v2 0/4] netconsole: selftest for userdata overflow

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Message-Id: <20250103-netcons_overflow_test-v2-0-a49f9be64c21@debian.org>
Date: Fri, 03 Jan 2025 04:57:48 -0800
From: Breno Leitao <leitao@...ian.org>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, Breno Leitao <leitao@...ian.org>, 
 kernel-team@...a.com, Simon Horman <horms@...nel.org>
Subject: [PATCH net-next v2 0/4] netconsole: selftest for userdata overflow

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@...ian.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       |   1 +
 .../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, 297 insertions(+), 219 deletions(-)
---
base-commit: 94c16fd4df9089931f674fb9aaec41ea20b0fd7a
change-id: 20241204-netcons_overflow_test-eaf735d1f743

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