Searched hist:ff825ab2f455299c0c7287550915a8878e2a66e0 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/net/mptcp/ |
| H A D | protocol.c | diff ff825ab2f455299c0c7287550915a8878e2a66e0 Fri Nov 08 04:58:17 CST 2024 Paolo Abeni <pabeni@redhat.com> mptcp: cope racing subflow creation in mptcp_rcv_space_adjust
[ Upstream commit ce7356ae35943cc6494cc692e62d51a734062b7d ]
Additional active subflows - i.e. created by the in kernel path
manager - are included into the subflow list before starting the
3whs.
A racing recvmsg() spooling data received on an already established
subflow would unconditionally call tcp_cleanup_rbuf() on all the
current subflows, potentially hitting a divide by zero error on
the newly created ones.
Explicitly check that the subflow is in a suitable state before
invoking tcp_cleanup_rbuf().
Fixes: c76c6956566f ("mptcp: call tcp_cleanup_rbuf on subflows")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/02374660836e1b52afc91966b7535c8c5f7bafb0.1731060874.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|