netdev - [PATCH net 0/2] mptcp: Prevent tcp_push() crash and selftest temp file buildup

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Message-Id: <20210828001731.67757-1-mathew.j.martineau@linux.intel.com>
Date:   Fri, 27 Aug 2021 17:17:29 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        davem@...emloft.net, kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev, pabeni@...hat.com
Subject: [PATCH net 0/2] mptcp: Prevent tcp_push() crash and selftest temp file buildup

These are two fixes for the net tree, addressing separate issues.

Patch 1 addresses a divide-by-zero crash seen in syzkaller and also
reported by a user on the netdev list. This changes MPTCP code so
tcp_push() cannot be called with an invalid (0) mss_now value.

Patch 2 fixes a selftest temp file cleanup issue that consumes excessive
disk space when running repeated tests.

Matthieu Baerts (1):
  selftests: mptcp: clean tmp files in simult_flows

Paolo Abeni (1):
  mptcp: fix possible divide by zero

 net/mptcp/protocol.c                          | 78 +++++++++----------
 .../selftests/net/mptcp/simult_flows.sh       |  4 +-
 2 files changed, 39 insertions(+), 43 deletions(-)

base-commit: 5fe2a6b4344cbb2120d6d81e371b7ec8e75f03e2
-- 
2.33.0