Re: [PATCH 5.15.y] jfs: define xtree root and page independently

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: a779ed754e52d582b8c0e17959df063108bd0656

WARNING: Author mismatch between patch and upstream commit:
Backport author: Aditya Dutt<duttaditya18@gmail.com>
Commit author: Dave Kleikamp<dave.kleikamp@oracle.com>

Status in newer kernel trees:
6.14.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)
6.6.y | Present (different SHA1: 2ff51719ec61)
6.1.y | Not found

Note: The patch differs from the upstream commit:
---
1:  a779ed754e52d ! 1:  cac2f05e71c44 jfs: define xtree root and page independently
    @@ Metadata
      ## Commit message ##
         jfs: define xtree root and page independently
     
    +    [ Upstream commit a779ed754e52d582b8c0e17959df063108bd0656 ]
    +
         In order to make array bounds checking sane, provide a separate
         definition of the in-inode xtree root and the external xtree page.
     
         Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
         Tested-by: Manas Ghandat <ghandatmanas@gmail.com>
    +    (cherry picked from commit a779ed754e52d582b8c0e17959df063108bd0656)
    +    Closes: https://syzkaller.appspot.com/bug?extid=ccb458b6679845ee0bae
    +    Reported-by: syzbot+ccb458b6679845ee0bae@syzkaller.appspotmail.com
    +    Signed-off-by: Aditya Dutt <duttaditya18@gmail.com>
     
      ## fs/jfs/jfs_dinode.h ##
     @@ fs/jfs/jfs_dinode.h: struct dinode {
    @@ fs/jfs/jfs_xtree.c: xtSplitRoot(tid_t tid,
      
      	INCREMENT(xtStat.split);
      
    -@@ fs/jfs/jfs_xtree.c: int xtAppend(tid_t tid,		/* transaction id */
    +@@ fs/jfs/jfs_xtree.c: static int xtRelink(tid_t tid, struct inode *ip, xtpage_t * p)
       */
      void xtInitRoot(tid_t tid, struct inode *ip)
      {
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.15.y       |  Success    |  Success   |