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| author | Clark Williams <williams@redhat.com> | 2012-02-23 21:33:05 -0600 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-02-23 21:33:05 -0600 |
| commit | a0c034c3726715d1928b301ddd43c51799c0c07a (patch) | |
| tree | 76e78b4646ca0560d8cd0ee041a8bde9a5269c8c /kernel/relay.c | |
| parent | 086290148fc37d7f2eccb7026b18fb9539ec7820 (diff) | |
| parent | 9d0231c207faeda051cf54c1a64e1a147d2187fa (diff) | |
Merge commit 'v3.2.7' into rt-3.2.7-rt13v3.2.7-rt13
Diffstat (limited to 'kernel/relay.c')
| -rw-r--r-- | kernel/relay.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/relay.c b/kernel/relay.c index d5aeaa8bb9ee..eae992d90833 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -164,10 +164,14 @@ depopulate: */ static struct rchan_buf *relay_create_buf(struct rchan *chan) { - struct rchan_buf *buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL); - if (!buf) + struct rchan_buf *buf; + + if (chan->n_subbufs > UINT_MAX / sizeof(size_t *)) return NULL; + buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL); + if (!buf) + return NULL; buf->padding = kmalloc(chan->n_subbufs * sizeof(size_t *), GFP_KERNEL); if (!buf->padding) goto free_buf; @@ -579,6 +583,8 @@ struct rchan *relay_open(const char *base_filename, if (!(subbuf_size && n_subbufs)) return NULL; + if (subbuf_size > UINT_MAX / n_subbufs) + return NULL; chan = kzalloc(sizeof(struct rchan), GFP_KERNEL); if (!chan) |