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authorTyler Hicks <tyhicks@linux.vnet.ibm.com>2011-03-09 11:49:13 -0600
committerGreg Kroah-Hartman <gregkh@suse.de>2011-04-14 13:02:00 -0700
commiteb7ad98797ba117b37c07517793e836ac58f33c8 (patch)
treea46bb8a1bc021558410c4407cad491a87de06004 /fs
parent2e8baeac894365899a6934987bf2dfc6a28d4dd6 (diff)
eCryptfs: Unlock page in write_begin error path
commit 50f198ae16ac66508d4b8d5a40967a8507ad19ee upstream. Unlock the page in error path of ecryptfs_write_begin(). This may happen, for example, if decryption fails while bring the page up-to-date. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/ecryptfs/mmap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index cc64fca89f8..eb9d9672ebd 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -374,6 +374,11 @@ static int ecryptfs_write_begin(struct file *file,
&& (pos != 0))
zero_user(page, 0, PAGE_CACHE_SIZE);
out:
+ if (unlikely(rc)) {
+ unlock_page(page);
+ page_cache_release(page);
+ *pagep = NULL;
+ }
return rc;
}