The patch titled
drivers/infiniband/core: use memdup_user
has been added to the -mm tree. Its filename is
drivers-infiniband-core-use-memdup_user.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: drivers/infiniband/core: use memdup_user
From: Julia Lawall <julia@xxxxxxx>
Use memdup_user when user data is immediately copied into the
allocated region.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@
- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+ to = memdup_user(from,size);
if (
- to==NULL
+ IS_ERR(to)
|| ...) {
<+... when != goto l1;
- -ENOMEM
+ PTR_ERR(to)
...+>
}
- if (copy_from_user(to, from, size) != 0) {
- <+... when != goto l2;
- -EFAULT
- ...+>
- }
// </smpl>
Signed-off-by: Julia Lawall <julia@xxxxxxx>
Cc: Roland Dreier <rdreier@xxxxxxxxx>
Cc: walter harms <wharms@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/ucm.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff -puN drivers/infiniband/core/ucm.c~drivers-infiniband-core-use-memdup_user drivers/infiniband/core/ucm.c
--- a/drivers/infiniband/core/ucm.c~drivers-infiniband-core-use-memdup_user
+++ a/drivers/infiniband/core/ucm.c
@@ -706,14 +706,9 @@ static int ib_ucm_alloc_data(const void
if (!len)
return 0;
- data = kmalloc(len, GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- if (copy_from_user(data, (void __user *)(unsigned long)src, len)) {
- kfree(data);
- return -EFAULT;
- }
+ data = memdup_user((void __user *)(unsigned long)src, len);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
*dest = data;
return 0;
_
Patches currently in -mm which might be from julia@xxxxxxx are
origin.patch
linux-next.patch
drivers-scsi-aacraid-eliminate-use-after-free.patch
arch-x86-pci-use-kasprintf.patch
drivers-scsi-libsas-use-sam_good.patch
drivers-scsi-remove-unnecessary-null-test.patch
drivers-message-move-dereference-after-null-test.patch
drivers-scsi-correct-the-size-argument-to-kmalloc.patch
drivers-char-ppdevc-use-kasprintf.patch
net-can-use-memdup_user.patch
drivers-net-use-memdup_user.patch
fs-btrfs-use-memdup_user.patch
drivers-video-via-use-memdup_user.patch
mm-use-memdup_user.patch
drivers-net-cxgb3-use-memdup_user.patch
drivers-net-wan-use-memdup_user.patch
drivers-block-use-memdup_user.patch
drivers-media-use-memdup_user.patch
drivers-infiniband-core-use-memdup_user.patch
drivers-i2c-use-memdup_user.patch
drivers-ieee1394-use-memdup_user.patch
fs-autofs4-use-memdup_user.patch
drivers-scsi-use-memdup_user.patch
drivers-char-applicomc-use-memdup_user.patch
drivers-char-vtc-use-memdup_user.patch
drivers-message-i2o-i2o_configc-use-memdup_user.patch
drivers-telephony-ixjc-use-memdup_user.patch
drivers-s390-net-use-memdup_user.patch
drivers-ide-use-memdup_user.patch
net-dccp-use-memdup_user.patch
drivers-net-wireless-prism54-use-memdup_user.patch
drivers-usb-gadget-use-memdup_user.patch
drivers-isdn-use-memdup_user.patch
drivers-staging-dream-camera-use-memdup_user.patch
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