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| author |   Mark Tinguely <mark.tinguely@oracle.com> | 2025-04-11 11:31:24 -0500 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2025-05-07 23:39:38 -0700 |
| commit | 31d4cd4eb2f8d9b87ebfa6a5e443a59e3b3d7b8c (patch) | |
| tree | d6b34b6956d2693b3f362252bde77818637d5361 | |
| parent | mm/huge_memory: fix dereferencing invalid pmd migration entry (diff) | |
| download | wireguard-linux-31d4cd4eb2f8d9b87ebfa6a5e443a59e3b3d7b8c.tar.xz wireguard-linux-31d4cd4eb2f8d9b87ebfa6a5e443a59e3b3d7b8c.zip | |
ocfs2: fix panic in failed foilio allocation
commit 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") and commit
9a5e08652dc4b ("ocfs2: use an array of folios instead of an array of
pages") save -ENOMEM in the folio array upon allocation failure and call
the folio array free code.
The folio array free code expects either valid folio pointers or NULL.
Finding the -ENOMEM will result in a panic. Fix by NULLing the error
folio entry.
Link: https://lkml.kernel.org/r/c879a52b-835c-4fa0-902b-8b2e9196dcbd@oracle.com
Fixes: 7e119cff9d0a ("ocfs2: convert w_pages to w_folios")
Fixes: 9a5e08652dc4b ("ocfs2: use an array of folios instead of an array of pages")
Signed-off-by: Mark Tinguely <mark.tinguely@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | fs/ocfs2/alloc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index b8ac85b548c7..821cb7874685 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -6918,6 +6918,7 @@ static int ocfs2_grab_folios(struct inode *inode, loff_t start, loff_t end, if (IS_ERR(folios[numfolios])) { ret = PTR_ERR(folios[numfolios]); mlog_errno(ret); + folios[numfolios] = NULL; goto out; } |