On Fri, Oct 11, 2024 at 07:43:30PM +0800, Zong Li wrote:
On Fri, Oct 11, 2024 at 6:18 PM Mark Brown <broonie@xxxxxxxxxx> wrote:On Fri, Oct 11, 2024 at 01:44:55PM +0800, Zong Li wrote: > On Wed, Oct 9, 2024 at 7:46 AM Deepak Gupta <debug@xxxxxxxxxxxx> wrote: > > + if (si->si_code == SEGV_CPERR) { > Hi Deepak, > I got some errors when building this test, I suppose they should be > fixed in the next version. > riscv_cfi_test.c: In function 'sigsegv_handler': > riscv_cfi_test.c:17:28: error: 'SEGV_CPERR' undeclared (first use in > this function); did you mean 'SEGV_ACCERR'? > 17 | if (si->si_code == SEGV_CPERR) { > | ^~~~~~~~~~ > | SEGV_ACCERR > Did you run "make headers_install" prior to building kselftest to get the current kernel's headers available for userspace builds?Yes, I have run "make header" and "make header_install" before building the kselftest. This error happens when I cross compiled it, perhaps I can help to check if it is missing some header files or header search path.
That's wierd. It doesn't fail for me even if I do not do `make headers_install`. But I am building kernel and selftests with toolchain which supports shadow stack and landing pad. It's defined in `siginfo.h`. When I built toolchain, I did point it at the latest kernel headers. May be that's the trick. """ $ grep -nir SEGV_CPERR /scratch/debug/linux/kbuild/usr/include/* /scratch/debug/linux/kbuild/usr/include/asm-generic/siginfo.h:240:#define SEGV_CPERR 10 /* Control protection fault */ $ grep -nir SEGV_CPERR /scratch/debug/open_src/sifive_cfi_toolchain/INSTALL_Sept18/sysroot/usr/* /scratch/debug/open_src/sifive_cfi_toolchain/INSTALL_Sept18/sysroot/usr/include/asm-generic/siginfo.h:240:#define SEGV_CPERR 10 /* Control protection fault */ /scratch/debug/open_src/sifive_cfi_toolchain/INSTALL_Sept18/sysroot/usr/include/bits/siginfo-consts.h:139: SEGV_CPERR /* Control protection fault. */ /scratch/debug/open_src/sifive_cfi_toolchain/INSTALL_Sept18/sysroot/usr/include/bits/siginfo-consts.h:140:# define SEGV_CPERR SEGV_CPERR """
