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authorTobias Klauser <tklauser@distanz.ch>2014-06-24 17:33:22 +0400
committerDavid S. Miller <davem@davemloft.net>2014-06-26 03:40:02 +0400
commit99e72a0fed07d118d329f3046ad2ec2ae9357d63 (patch)
tree1517dd11ff7021cb4d06dcd335edd2d8009294d0 /net
parent677a9fd3e6e6e03e11b979b69c9f8c813583683a (diff)
downloadlinux-99e72a0fed07d118d329f3046ad2ec2ae9357d63.tar.xz
net: filter: Use kcalloc/kmalloc_array to allocate arrays
Use kcalloc/kmalloc_array to make it clear we're allocating arrays. No integer overflow can actually happen here, since len/flen is guaranteed to be less than BPF_MAXINSNS (4096). However, this changed makes sure we're not going to get one if BPF_MAXINSNS were ever increased. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/filter.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index 4d13b125ef4b..1dbf6462f766 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -844,7 +844,7 @@ int sk_convert_filter(struct sock_filter *prog, int len,
return -EINVAL;
if (new_prog) {
- addrs = kzalloc(len * sizeof(*addrs), GFP_KERNEL);
+ addrs = kcalloc(len, sizeof(*addrs), GFP_KERNEL);
if (!addrs)
return -ENOMEM;
}
@@ -1101,7 +1101,7 @@ static int check_load_and_stores(struct sock_filter *filter, int flen)
BUILD_BUG_ON(BPF_MEMWORDS > 16);
- masks = kmalloc(flen * sizeof(*masks), GFP_KERNEL);
+ masks = kmalloc_array(flen, sizeof(*masks), GFP_KERNEL);
if (!masks)
return -ENOMEM;