496273439b
commit 639420e9f6cd9ca074732b17ac450d2518d5937f upstream. The earlycon parameter is based on fixmap, and fixmap addresses are not supposed to be shadowed by KASAN. So return the kasan_early_shadow_page in kasan_mem_to_shadow() if the input address is above FIXADDR_START. Otherwise earlycon cannot work after kasan_init(). Cc: stable@vger.kernel.org Fixes: 5aa4ac64e6add3e ("LoongArch: Add KASAN (Kernel Address Sanitizer) support") Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.