From: Gopal Tiwari <gtiwari@redhat.com> mainline inclusion from mainline-v5.13-rc1 commit d6609084b0b81abc74dc9db0281cdd0e074df5d4 category: bugfix bugzilla: NA CVE: NA Link: https://gitee.com/openeuler/kernel/issues/I4JFPM?from=project-issue ------------------------------------------------- Adding entry for dev_attr_fast_io_fail_tmo to avoid the kernel crash while reading and writing the fast_io_fail_tmo. Fixes: 09fbed636382 (nvme: export fast_io_fail_tmo to sysfs) Signed-off-by: Gopal Tiwari <gtiwari@redhat.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: jiangtao <jiangtao62@huawei.com> Reviewed-by: Hou Tao <houtao1@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/nvme/host/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index d512855393851..36558dfe6f654 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3157,6 +3157,8 @@ static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj, return 0; if (a == &dev_attr_address.attr && !ctrl->ops->get_address) return 0; + if (a == &dev_attr_fast_io_fail_tmo.attr && !ctrl->opts) + return 0; return a->mode; } -- 2.25.1