5.4-stable review patch. If anyone has any objections, please let me know.
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From: Wengang Wang wen.gang.wang@oracle.com
commit 914eec5e980171bc128e7e24f7a22aa1d803570e upstream.
The following INFO level message was seen:
seq_file: buggy .next function ocfs2_dlm_seq_next [ocfs2] did not update position index
Fix: Update *pos (so m->index) to make seq_read_iter happy though the index its self makes no sense to ocfs2_dlm_seq_next.
Link: https://lkml.kernel.org/r/20241119174500.9198-1-wen.gang.wang@oracle.com Signed-off-by: Wengang Wang wen.gang.wang@oracle.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Junxiao Bi junxiao.bi@oracle.com Cc: Changwei Ge gechangwei@live.cn Cc: Jun Piao piaojun@huawei.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ocfs2/dlmglue.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -3101,6 +3101,7 @@ static void *ocfs2_dlm_seq_next(struct s struct ocfs2_lock_res *iter = v; struct ocfs2_lock_res *dummy = &priv->p_iter_res;
+ (*pos)++; spin_lock(&ocfs2_dlm_tracking_lock); iter = ocfs2_dlm_next_res(iter, priv); list_del_init(&dummy->l_debug_list);