4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Anton Vasilyev <vasilyev@xxxxxxxxx>
[ Upstream commit 744820869166c8c78be891240cf5f66e8a333694 ]
Debugfs file reset_stats is created with S_IRUSR permissions,
but ocrdma_dbgfs_ops_read() doesn't support OCRDMA_RESET_STATS,
whereas ocrdma_dbgfs_ops_write() supports only OCRDMA_RESET_STATS.
The patch fixes misstype with permissions.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@xxxxxxxxx>
Acked-by: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/ocrdma/ocrdma_stats.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
@@ -834,7 +834,7 @@ void ocrdma_add_port_stats(struct ocrdma
dev->reset_stats.type = OCRDMA_RESET_STATS;
dev->reset_stats.dev = dev;
- if (!debugfs_create_file("reset_stats", S_IRUSR, dev->dir,
+ if (!debugfs_create_file("reset_stats", 0200, dev->dir,
&dev->reset_stats, &ocrdma_dbg_ops))
goto err;