[rds-devel] [PATCH net] net/rds: An rds_sock is added too early to the hash table

[David Miller]

From: Ka-Cheong Poon <ka-cheong.poon at oracle.com>
Date: Wed, 11 Sep 2019 02:58:05 -0700

> In rds_bind(), an rds_sock is added to the RDS bind hash table before
> rs_transport is set.  This means that the socket can be found by the
> receive code path when rs_transport is NULL.  And the receive code
> path de-references rs_transport for congestion update check.  This can
> cause a panic.  An rds_sock should not be added to the bind hash table
> before all the needed fields are set.
> 
> Reported-by: syzbot+4b4f8163c2e246df3c4c at syzkaller.appspotmail.com
> Signed-off-by: Ka-Cheong Poon <ka-cheong.poon at oracle.com>

Applied.