]> git.baikalelectronics.ru Git - kernel.git/commit
net: dccp: initialize (addr,port) listening hashtable
authorPeter Oskolkov <posk@google.com>
Sat, 15 Dec 2018 22:27:23 +0000 (14:27 -0800)
committerDavid S. Miller <davem@davemloft.net>
Sun, 16 Dec 2018 20:14:29 +0000 (12:14 -0800)
commiteb4a1614b296f1c68a739188fb98fa7ab6a2edb8
treecdad76ac56855e3d4ab4736882c02a34813b2f21
parenta923413f70c62c0f935fecf1f4089c8174a7cf41
net: dccp: initialize (addr,port) listening hashtable

Commit 3ce8b1280ab2 "net: tcp: prefer listeners bound to an address"
removes port-only listener lookups. This caused segfaults in DCCP
lookups because DCCP did not initialize the (addr,port) hashtable.

This patch adds said initialization.

The only non-trivial issue here is the size of the new hashtable.
It seemed reasonable to make it match the size of the port-only
hashtable (= INET_LHTABLE_SIZE) that was used previously. Other
parameters to inet_hashinfo2_init() match those used in TCP.

Tested: syzcaller issues fixed; the second patch in the patchset
        tests that DCCP lookups work correctly.

Fixes: 3ce8b1280ab2 "net: tcp: prefer listeners bound to an address"
Reported-by: syzcaller <syzkaller@googlegroups.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/dccp/proto.c