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path: root/fs/btrfs/ioctl.c
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Diffstat (limited to 'fs/btrfs/ioctl.c')
-rw-r--r--fs/btrfs/ioctl.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5d91776e12a2..0770c91586ca 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3090,7 +3090,7 @@ out_unlock:
static long btrfs_ioctl_file_extent_same(struct file *file,
struct btrfs_ioctl_same_args __user *argp)
{
- struct btrfs_ioctl_same_args *same;
+ struct btrfs_ioctl_same_args *same = NULL;
struct btrfs_ioctl_same_extent_info *info;
struct inode *src = file_inode(file);
u64 off;
@@ -3120,6 +3120,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file,
if (IS_ERR(same)) {
ret = PTR_ERR(same);
+ same = NULL;
goto out;
}
@@ -3190,6 +3191,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file,
out:
mnt_drop_write_file(file);
+ kfree(same);
return ret;
}
@@ -3586,6 +3588,20 @@ process_slot:
u64 trim = 0;
u64 aligned_end = 0;
+ /*
+ * Don't copy an inline extent into an offset
+ * greater than zero. Having an inline extent
+ * at such an offset results in chaos as btrfs
+ * isn't prepared for such cases. Just skip
+ * this case for the same reasons as commented
+ * at btrfs_ioctl_clone().
+ */
+ if (last_dest_end > 0) {
+ ret = -EOPNOTSUPP;
+ btrfs_end_transaction(trans, root);
+ goto out;
+ }
+
if (off > key.offset) {
skip = off - key.offset;
new_key.offset += skip;