linux-kernel - [PATCH] reiserfs: journal: Increase jl pointer check

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Date:   Tue, 25 Oct 2022 16:47:04 +0800
From:   Li zeming <zeming@...china.com>
To:     willy@...radead.org, jlayton@...nel.org, song@...nel.org,
        bvanassche@....org, neilb@...e.de
Cc:     reiserfs-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Li zeming <zeming@...china.com>
Subject: [PATCH] reiserfs: journal: Increase jl pointer check

If kzalloc fails to allocate the jl pointer, NULL is returned directly.

Signed-off-by: Li zeming <zeming@...china.com>
---
 fs/reiserfs/journal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 94addfcefede..d64e9de126c1 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2569,6 +2569,9 @@ static struct reiserfs_journal_list *alloc_journal_list(struct super_block *s)
 	struct reiserfs_journal_list *jl;
 	jl = kzalloc(sizeof(struct reiserfs_journal_list),
 		     GFP_NOFS | __GFP_NOFAIL);
+	if (!jl)
+		return NULL;
+
 	INIT_LIST_HEAD(&jl->j_list);
 	INIT_LIST_HEAD(&jl->j_working_list);
 	INIT_LIST_HEAD(&jl->j_tail_bh_list);
-- 
2.18.2