This is a note to let you know that I've just added the patch titled
ceph: fix endianness bug in frag_tree_split_cmp
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-fix-endianness-bug-in-frag_tree_split_cmp.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fe2ed42517533068ac03eed5630fffafff27eacf Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@xxxxxxxxxx>
Date: Thu, 12 Jan 2017 14:42:39 -0500
Subject: ceph: fix endianness bug in frag_tree_split_cmp
From: Jeff Layton <jlayton@xxxxxxxxxx>
commit fe2ed42517533068ac03eed5630fffafff27eacf upstream.
sparse says:
fs/ceph/inode.c:308:36: warning: incorrect type in argument 1 (different base types)
fs/ceph/inode.c:308:36: expected unsigned int [unsigned] [usertype] a
fs/ceph/inode.c:308:36: got restricted __le32 [usertype] frag
fs/ceph/inode.c:308:46: warning: incorrect type in argument 2 (different base types)
fs/ceph/inode.c:308:46: expected unsigned int [unsigned] [usertype] b
fs/ceph/inode.c:308:46: got restricted __le32 [usertype] frag
We need to convert these values to host-endian before calling the
comparator.
Fixes: a407846ef7c6 ("ceph: don't assume frag tree splits in mds reply are sorted")
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ceph/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -305,7 +305,8 @@ static int frag_tree_split_cmp(const voi
{
struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l;
struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r;
- return ceph_frag_compare(ls->frag, rs->frag);
+ return ceph_frag_compare(le32_to_cpu(ls->frag),
+ le32_to_cpu(rs->frag));
}
static bool is_frag_child(u32 f, struct ceph_inode_frag *frag)
Patches currently in stable-queue which might be from jlayton@xxxxxxxxxx are
queue-4.9/ceph-fix-endianness-of-getattr-mask-in-ceph_d_revalidate.patch
queue-4.9/ceph-fix-endianness-bug-in-frag_tree_split_cmp.patch
queue-4.9/ceph-fix-bad-endianness-handling-in-parse_reply_info_extra.patch
--
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