netdev - [PATCH net v3 0/3] net: netpoll: fix a memleak and create a selftest

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250905-netconsole_torture-v3-0-875c7febd316@debian.org>
Date: Fri, 05 Sep 2025 10:25:06 -0700
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>, Simon Horman <horms@...nel.org>, 
 david decotigny <decot@...glers.com>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, asantostc@...il.com, efault@....de, 
 calvin@...nvd.org, kernel-team@...a.com, Breno Leitao <leitao@...ian.org>, 
 stable@...r.kernel.org, jv@...sburgh.net
Subject: [PATCH net v3 0/3] net: netpoll: fix a memleak and create a
 selftest

Fix a memory leak issue on netpoll and create a netconsole test that exposes
the problem, when run with kmemleak enabled.

This is a merge of two patches I've sent individually and are merged on
the same patchset[1][2].

Link: https://lore.kernel.org/all/20250904-netconsole_torture-v2-0-5775ed5dc366@debian.org/ [1]
Link: https://lore.kernel.org/all/20250902165426.6d6cd172@kernel.org/ [2]

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
Changes in v3:
- this patchset is a merge of the fix and the selftest together as
recommended by Jakub.

Changes in v2:
- Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring
  the create_dynamic_target() (Jakub)
- Move the "wait" to after all the messages has been sent.
- Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@debian.org

---
Breno Leitao (3):
      netpoll: fix incorrect refcount handling causing incorrect cleanup
      selftest: netcons: refactor target creation
      selftest: netcons: create a torture test

 net/core/netpoll.c                                 |   7 +-
 tools/testing/selftests/drivers/net/Makefile       |   1 +
 .../selftests/drivers/net/lib/sh/lib_netcons.sh    |  30 +++--
 .../selftests/drivers/net/netcons_torture.sh       | 127 +++++++++++++++++++++
 4 files changed, 152 insertions(+), 13 deletions(-)
---
base-commit: d69eb204c255c35abd9e8cb621484e8074c75eaa
change-id: 20250902-netconsole_torture-8fc23f0aca99

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