Hi James,
On Wed, Aug 05, 2015 at 04:48:48PM +0100, James Hogan wrote:
> These patches extend the test_user_copy test module to handle lots more
> cases of user accessors which architectures can override separately, and
> in particular those which are important for checking the MIPS Enhanced
> Virtual Addressing (EVA) implementations, which need to handle
> overlapping user and kernel address spaces, with special instructions
> for accessing user address space from kernel mode.
>
> - Checking that kernel pointers are accepted when user address limit is
> set to KERNEL_DS, as done by the kernel when it internally invokes
> system calls with kernel pointers.
> - Checking of the unchecked accessors (which don't call access_ok()).
> Some of the tests are special cased for EVA at the moment which has
> stricter hardware guarantees for bad user accesses than other
> configurations.
> - Checking of other sets of user accessors, including the inatomic user
> copies, copy_in_user, clear_user, the user string accessors, and the
> user checksum functions, all of which need special handling in arch
> code with EVA.
>
> Tested on MIPS with and without EVA, and on x86_64.
>
The series causes several build failures with other architectures.
>From next-20150806:
Build results:
total: 152 pass: 138 fail: 14
Failed builds:
alpha:allmodconfig (*)
arm:allmodconfig (*)
arm:omap2plus_defconfig
arm64:allmodconfig
i386:allyesconfig (*)
i386:allmodconfig (*)
m68k:defconfig (*)
m68k:allmodconfig (*)
m68k:sun3_defconfig (*)
mips:allmodconfig
parisc:allmodconfig
s390:allmodconfig
sparc32:allmodconfig (*)
xtensa:allmodconfig (*)
The builds marked with (*) fail because of your patch series.
Guenter
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