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author | Paolo Abeni <pabeni@redhat.com> | 2022-01-21 03:35:27 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-08 20:34:06 +0300 |
commit | 9908c759a17e0af6082f39c1bc1a59154ab81741 (patch) | |
tree | 4c2dd323b798de169aac8eb045b9fd29f715def7 /drivers/soc | |
parent | 778283dc2840bf491de9ddc0e5d65c1449fbfc79 (diff) | |
download | linux-9908c759a17e0af6082f39c1bc1a59154ab81741.tar.xz |
mptcp: fix msk traversal in mptcp_nl_cmd_set_flags()
commit 8e9eacad7ec7a9cbf262649ebf1fa6e6f6cc7d82 upstream.
The MPTCP endpoint list is under RCU protection, guarded by the
pernet spinlock. mptcp_nl_cmd_set_flags() traverses the list
without acquiring the spin-lock nor under the RCU critical section.
This change addresses the issue performing the lookup and the endpoint
update under the pernet spinlock.
[The upstream commit had to handle a lookup_by_id variable that is only
present in 5.17. This version of the patch removes that variable, so
the __lookup_addr() function only handles the lookup as it is
implemented in 5.15 and 5.16. It also removes one 'const' keyword to
prevent a warning due to differing const-ness in the 5.17 version of
addresses_equal().]
Fixes: 0f9f696a502e ("mptcp: add set_flags command in PM netlink")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/soc')
0 files changed, 0 insertions, 0 deletions