diff options
| author | Al Viro | 2016-10-10 23:02:51 -0400 |
|---|---|---|
| committer | Al Viro | 2016-10-10 23:02:51 -0400 |
| commit | 3873691e5ab34fa26948643d038a2b98c4437298 (patch) | |
| tree | 5327469194c2167830bce38b56a618b754cdbeea /fs/ioctl.c | |
| parent | c2050a454c7f123d7a57fa1d76ff61bd43643abb (diff) | |
| parent | aadfa8019e8114539cfa0b1eb2e5a9c83094a590 (diff) | |
Merge remote-tracking branch 'ovl/rename2' into for-linus
Diffstat (limited to 'fs/ioctl.c')
| -rw-r--r-- | fs/ioctl.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c index 0f56deb24ce6..c415668c86d4 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -568,7 +568,7 @@ static int ioctl_fsthaw(struct file *filp) return thaw_super(sb); } -static long ioctl_file_dedupe_range(struct file *file, void __user *arg) +static int ioctl_file_dedupe_range(struct file *file, void __user *arg) { struct file_dedupe_range __user *argp = arg; struct file_dedupe_range *same = NULL; @@ -582,6 +582,10 @@ static long ioctl_file_dedupe_range(struct file *file, void __user *arg) } size = offsetof(struct file_dedupe_range __user, info[count]); + if (size > PAGE_SIZE) { + ret = -ENOMEM; + goto out; + } same = memdup_user(argp, size); if (IS_ERR(same)) { |