On Mon, Oct 24, 2022 at 12:39:41AM +0800, Hawkins Jiawei wrote: > According to commit "vfs: parse: deal with zero length string value", > kernel will set the param->string to null pointer in vfs_parse_fs_string() > if fs string has zero length. > > Yet the problem is that, when fs parses its mount parameters, it will > dereferences the param->string, without checking whether it is a > null pointer, which may trigger a null-ptr-deref bug. > > So this patchset reviews all functions for fs to parse parameters, > by using `git grep -n "\.parse_param" fs/*`, and adds sanity check > on param->string if its function will dereference param->string > without check. How about reverting the commit in question instead? Or dropping it from patch series, depending upon the way akpm handles the pile these days...
