net_sched: gact: Fix potential panic in tcf_gact().
authorHiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Fri, 3 Aug 2012 10:57:52 +0000 (19:57 +0900)
committerDavid S. Miller <davem@davemloft.net>
Fri, 3 Aug 2012 23:47:24 +0000 (16:47 -0700)
commit696ecdc10622d86541f2e35cc16e15b6b3b1b67e
tree55090a298a1e20df7aaf7c27af2505c2c581eac1
parentf3f9f332e231abaf28e14344733b7d000b830f7c
net_sched: gact: Fix potential panic in tcf_gact().

gact_rand array is accessed by gact->tcfg_ptype whose value
is assumed to less than MAX_RAND, but any range checks are
not performed.

So add a check in tcf_gact_init(). And in tcf_gact(), we can
reduce a branch.

Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/act_gact.c