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Convert vhost to struct_size 

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Matthew Wilcox 2018-06-07 07:57:18 -07:00 committed by Kees Cook
parent c817e6ccb2
commit b2303d7bf7
1 changed files with 2 additions and 1 deletions
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3
drivers/vhost/vhost.c
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@ -1286,7 +1286,8 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m)
return -EOPNOTSUPP; return -EOPNOTSUPP;
if (mem.nregions > max_mem_regions) if (mem.nregions > max_mem_regions)
return -E2BIG; return -E2BIG;
newmem = kvzalloc(size + mem.nregions * sizeof(*m->regions), GFP_KERNEL); newmem = kvzalloc(struct_size(newmem, regions, mem.nregions),
GFP_KERNEL);
if (!newmem) if (!newmem)
return -ENOMEM; return -ENOMEM;