mm/memory.c: check return value of ioremap_prot
authorjie@chenjie6@huwei.com <jie@chenjie6@huwei.com>
Sat, 11 Aug 2018 00:23:06 +0000 (17:23 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 11 Aug 2018 03:19:58 +0000 (20:19 -0700)
commit24eee1e4c47977bdfb71d6f15f6011e7b6188d04
treebb2ab1880fdbaf2f3351470eabe98bf2b7acaf64
parent3ca17b1f3628f916f79e0ab62f1bf0e45ec9ba92
mm/memory.c: check return value of ioremap_prot

ioremap_prot() can return NULL which could lead to an oops.

Link: http://lkml.kernel.org/r/1533195441-58594-1-git-send-email-chenjie6@huawei.com
Signed-off-by: chen jie <chenjie6@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: chenjie <chenjie6@huawei.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memory.c