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| author | Tobias Klauser <tklauser@distanz.ch> | 2014-06-24 15:33:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-25 16:40:02 -0700 |
| commit | 99e72a0fed07d118d329f3046ad2ec2ae9357d63 (patch) | |
| tree | 1517dd11ff7021cb4d06dcd335edd2d8009294d0 /net | |
| parent | 677a9fd3e6e6e03e11b979b69c9f8c813583683a (diff) | |
| download | linux-99e72a0fed07d118d329f3046ad2ec2ae9357d63.tar.gz | |
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.c | 4 |
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; |