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authorAndy Whitcroft <apw@canonical.com>2012-10-11 12:32:17 +0200
committerMatt Fleming <matt.fleming@intel.com>2012-10-30 11:39:21 +0100
commitd142df03a798ee7d2db10a1f20945110ea6067ff (patch)
tree2bdfa599c3de25faf1ed7507b48c20bae66ce20f /drivers/firmware/efivars.c
parentx86-64/efi: Use EFI to deal with platform wall clock (again) (diff)
downloadlinux-d142df03a798ee7d2db10a1f20945110ea6067ff.tar.xz
linux-d142df03a798ee7d2db10a1f20945110ea6067ff.zip
efivarfs: efivarfs_file_read ensure we free data in error paths
Signed-off-by: Andy Whitcroft <apw@canonical.com> Acked-by: Matthew Garrett <mjg@redhat.com> Acked-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'drivers/firmware/efivars.c')
-rw-r--r--drivers/firmware/efivars.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 6793965b7c8b..b7c9a3261dc4 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -766,7 +766,7 @@ static ssize_t efivarfs_file_read(struct file *file, char __user *userbuf,
unsigned long datasize = 0;
u32 attributes;
void *data;
- ssize_t size;
+ ssize_t size = 0;
status = efivars->ops->get_variable(var->var.VariableName,
&var->var.VendorGuid,
@@ -784,13 +784,13 @@ static ssize_t efivarfs_file_read(struct file *file, char __user *userbuf,
&var->var.VendorGuid,
&attributes, &datasize,
(data + 4));
-
if (status != EFI_SUCCESS)
- return 0;
+ goto out_free;
memcpy(data, &attributes, 4);
size = simple_read_from_buffer(userbuf, count, ppos,
data, datasize + 4);
+out_free:
kfree(data);
return size;