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IB/security: Restrict use of the write() interface
[cascardo/linux.git]
/
drivers
/
infiniband
/
core
/
uverbs_main.c
diff --git
a/drivers/infiniband/core/uverbs_main.c
b/drivers/infiniband/core/uverbs_main.c
index
28ba2cc
..
31f422a
100644
(file)
--- a/
drivers/infiniband/core/uverbs_main.c
+++ b/
drivers/infiniband/core/uverbs_main.c
@@
-48,6
+48,8
@@
#include <asm/uaccess.h>
+#include <rdma/ib.h>
+
#include "uverbs.h"
MODULE_AUTHOR("Roland Dreier");
@@
-709,6
+711,9
@@
static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
int srcu_key;
ssize_t ret;
+ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
+ return -EACCES;
+
if (count < sizeof hdr)
return -EINVAL;