Re: [PATCH 5.15.y] ocfs2: fix deadlock in ocfs2_get_system_file_inode

[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: 7bf1823e010e8db2fb649c790bd1b449a75f52d8

WARNING: Author mismatch between patch and upstream commit:
Backport author: Pranav Tyagi<pranav.tyagi03@gmail.com>
Commit author: Mohammed Anees<pvmohammedanees2003@gmail.com>

Status in newer kernel trees:
6.15.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)
6.6.y | Present (different SHA1: ec3e32de2d8a)
6.1.y | Not found

Note: The patch differs from the upstream commit:
---
1:  7bf1823e010e8 ! 1:  8b2350f85e550 ocfs2: fix deadlock in ocfs2_get_system_file_inode
    @@ Metadata
      ## Commit message ##
         ocfs2: fix deadlock in ocfs2_get_system_file_inode
     
    +    [ Upstream commit 7bf1823e010e8db2fb649c790bd1b449a75f52d8 ]
    +
         syzbot has found a possible deadlock in ocfs2_get_system_file_inode [1].
     
         The scenario is depicted here,
    @@ Commit message
     
         [1] https://syzkaller.appspot.com/bug?extid=e0055ea09f1f5e6fabdd
     
    +    [ Backport to 5.15: context cleanly applied with no semantic changes.
    +    Build-tested. ]
    +
         Link: https://lkml.kernel.org/r/20240924093257.7181-1-pvmohammedanees2003@gmail.com
         Signed-off-by: Mohammed Anees <pvmohammedanees2003@gmail.com>
         Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
    @@ Commit message
         Cc: Jun Piao <piaojun@huawei.com>
         Cc:  <stable@vger.kernel.org>
         Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    +    Signed-off-by: Pranav Tyagi <pranav.tyagi03@gmail.com>
     
      ## fs/ocfs2/extent_map.c ##
     @@ fs/ocfs2/extent_map.c: int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
---

Results of testing on various branches:

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