ipvs: fix racy memcpy in proc_do_sync_threshold

When two threads run proc_do_sync_threshold() in parallel,
data races could happen between the two memcpy():

Thread-1			Thread-2
memcpy(val, valp, sizeof(val));
				memcpy(valp, val, sizeof(val));

This race might mess up the (struct ctl_table *) table->data,
so we add a mutex lock to serialize them.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Link: https://lore.kernel.org/netdev/[email protected]/
Signed-off-by: Sishuai Gong <[email protected]>
Acked-by: Simon Horman <[email protected]>
Acked-by: Julian Anastasov <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>

0 files changed, 0 insertions, 0 deletions