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| author | Paolo Abeni <pabeni@redhat.com> | 2024-11-08 13:58:17 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-11-12 06:06:34 +0300 |
| commit | ce7356ae35943cc6494cc692e62d51a734062b7d (patch) | |
| tree | f7408edcd3a86c30f596825043f2bbe52f07f770 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 581302298524e9d77c4c44ff5156a6cd112227ae (diff) | |
| download | linux-ce7356ae35943cc6494cc692e62d51a734062b7d.tar.xz | |
mptcp: cope racing subflow creation in mptcp_rcv_space_adjust
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>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions