[PATCH 4.18 074/158] uio: fix possible circular locking dependency

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Xiubo Li [ Upstream commit b34e9a15b37b8ddbf06a4da142b0c39c74211eb4 ] The call trace: XXX/1910 is trying to acquire lock: (>mmap_sem){++}, at: [] might_fault+0x57/0xb0 but task is

[PATCH 4.18 074/158] uio: fix possible circular locking dependency

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Xiubo Li [ Upstream commit b34e9a15b37b8ddbf06a4da142b0c39c74211eb4 ] The call trace: XXX/1910 is trying to acquire lock: (>mmap_sem){++}, at: [] might_fault+0x57/0xb0 but task is