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Convert infiniband uverbs to struct_size

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The flows were hidden from the C compiler; expose them as a zero-length
array to allow struct_size to work.

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 07:57:16 -07:00 committed by Kees Cook
parent 5b572e25c3
commit 7654cb1ba7
2 changed files with 3 additions and 6 deletions
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4
drivers/infiniband/core/uverbs_cmd.c
View File

@ -3559,8 +3559,8 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
goto err_uobj;
}
flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs *
sizeof(union ib_flow_spec), GFP_KERNEL);
flow_attr = kzalloc(struct_size(flow_attr, flows,
cmd.flow_attr.num_of_specs), GFP_KERNEL);
if (!flow_attr) {
err = -ENOMEM;
goto err_put;

5
include/rdma/ib_verbs.h
View File

@ -2093,10 +2093,7 @@ struct ib_flow_attr {
u32 flags;
u8 num_of_specs;
u8 port;
/* Following are the optional layers according to user request
* struct ib_flow_spec_xxx
* struct ib_flow_spec_yyy
*/
union ib_flow_spec flows[];
};
struct ib_flow {