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| author |   Petr Machata <petrm@mellanox.com> | 2018-06-08 15:11:47 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-06-08 19:58:31 -0400 |
| commit | 873aca2ee86e533665a73292c4e308ded1e9bafe (patch) | |
| tree | ea70348861f364b709118946a5216a91cd421a00 /lib/test_overflow.c | |
| parent | udp: fix rx queue len reported by diag and proc interface (diff) | |
| download | linux-dev-873aca2ee86e533665a73292c4e308ded1e9bafe.tar.xz linux-dev-873aca2ee86e533665a73292c4e308ded1e9bafe.zip | |
net: bridge: Fix locking in br_fdb_find_port()
Callers of br_fdb_find() need to hold the hash lock, which
br_fdb_find_port() doesn't do. However, since br_fdb_find_port() is not
doing any actual FDB manipulation, the hash lock is not really needed at
all. So convert to br_fdb_find_rcu(), surrounded by rcu_read_lock() /
_unlock() pair.
The device pointer copied from inside the FDB entry is then kept alive
by the RTNL lock, which br_fdb_find_port() asserts.
Fixes: 4d4fd36126d6 ("net: bridge: Publish bridge accessor functions")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions