| Message ID | 1420626529-23926-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/fs/dcache.c b/fs/dcache.c index 1d8b6a310822..e43ac3ca37e6 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2436,6 +2436,8 @@ static void switch_names(struct dentry *dentry, struct dentry *target, */ unsigned int i; BUILD_BUG_ON(!IS_ALIGNED(DNAME_INLINE_LEN, sizeof(long))); + kmemcheck_mark_initialized(dentry->d_iname, DNAME_INLINE_LEN); + kmemcheck_mark_initialized(target->d_iname, DNAME_INLINE_LEN); if (!exchange) { memcpy(dentry->d_iname, target->d_name.name, target->d_name.len + 1);
This is a note to let you know that I have just added a patch titled dcache: fix kmemcheck warning in switch_names to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt4. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 70fe6081473c3d9be719a3cae2b0b6e55c949da5 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka <mpatocka@redhat.com> Date: Fri, 5 Sep 2014 12:16:01 -0400 Subject: dcache: fix kmemcheck warning in switch_names commit 08d4f7722268755ee34ed1c9e8afee7dfff022bb upstream. This patch fixes kmemcheck warning in switch_names. The function switch_names swaps inline names of two dentries. It swaps full arrays d_iname, no matter how many bytes are really used by the strings. Reading data beyond string ends results in kmemcheck warning. We fix the bug by marking both arrays as fully initialized. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- fs/dcache.c | 2 ++ 1 file changed, 2 insertions(+) -- 2.1.4