On 06/08/15 10:50, Guenter Roeck wrote: > 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. Thanks Guenter, and sorry for the breakage. I've already got some fixes lined up. From the failure logs it looks like #ifdef CONFIG_COMPAT for [__]copy_in_user and #ifndef _HAVE_ARCH_COPY_AND_CSUM_FROM_USER for the the ppc64 csum_partial_copy_from_user one Stephen caught should sort it out. Cheers James > > 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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