3.16.7-ckt23 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit 9225c0b7b976dd9ceac2b80727a60d8fcb906a62 upstream.
missing get_user()
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
drivers/staging/lustre/lustre/obdecho/echo_client.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
index cdc46719bbd4..95c0bdb45d2a 100644
--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
+++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
@@ -1380,6 +1380,7 @@ static int
echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
{
struct lov_stripe_md *ulsm = _ulsm;
+ struct lov_oinfo **p;
int nob, i;
nob = offsetof (struct lov_stripe_md, lsm_oinfo[lsm->lsm_stripe_count]);
@@ -1389,9 +1390,10 @@ echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
if (copy_to_user (ulsm, lsm, sizeof(*ulsm)))
return (-EFAULT);
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- if (copy_to_user (ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
- sizeof(lsm->lsm_oinfo[0])))
+ for (i = 0, p = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, p++) {
+ struct lov_oinfo __user *up;
+ if (get_user(up, ulsm->lsm_oinfo + i) ||
+ copy_to_user(up, *p, sizeof(struct lov_oinfo)))
return (-EFAULT);
}
return 0;
@@ -1399,9 +1401,10 @@ echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
static int
echo_copyin_lsm (struct echo_device *ed, struct lov_stripe_md *lsm,
- void *ulsm, int ulsm_nob)
+ struct lov_stripe_md __user *ulsm, int ulsm_nob)
{
struct echo_client_obd *ec = ed->ed_ec;
+ struct lov_oinfo **p;
int i;
if (ulsm_nob < sizeof (*lsm))
@@ -1417,11 +1420,10 @@ echo_copyin_lsm (struct echo_device *ed, struct lov_stripe_md *lsm,
return (-EINVAL);
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- if (copy_from_user(lsm->lsm_oinfo[i],
- ((struct lov_stripe_md *)ulsm)-> \
- lsm_oinfo[i],
- sizeof(lsm->lsm_oinfo[0])))
+ for (i = 0, p = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, p++) {
+ struct lov_oinfo __user *up;
+ if (get_user(up, ulsm->lsm_oinfo + i) ||
+ copy_from_user(*p, up, sizeof(struct lov_oinfo)))
return (-EFAULT);
}
return (0);
--
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