On Fri, 24 May 2019 11:30:45 +0800 Gen Zhang <[email protected]> wrote:
> In dir_add() and do_name(), de->name and vcollected are allocated by > kstrdup(). And de->name and vcollected are dereferenced in the following > codes. However, memory allocation functions such as kstrdup() may fail. > Dereferencing this null pointer may cause the kernel go wrong. Thus we > should check these two kstrdup() operations. > Further, if kstrdup() returns NULL, we should free de in dir_add(). We generally assume that memory allocations within __init code cannot fail. If one does fail, something quite horrid has happened. The resulting oops will provide the same information as the proposed panic() anyway.
