A fix for bug in mmap() that I referenced in [1]. Also selftest for it. I would like to mark the fix as for stable v4.9 kernel if it'll be accepted, as I try to support compatible 32-bit C/R after v4.9 and working compatible mmap() is really wanted there.
[1]: https://marc.info/?l=linux-kernel&m=148311451525315 Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: [email protected] Dmitry Safonov (2): x86/mm: don't mmap() over 4GB with compat syscall selftests/x86: add test to check compat mmap() return addr arch/x86/kernel/sys_x86_64.c | 37 ++++- tools/testing/selftests/x86/Makefile | 2 +- tools/testing/selftests/x86/test_compat_mmap.c | 200 +++++++++++++++++++++++++ 3 files changed, 230 insertions(+), 9 deletions(-) create mode 100644 tools/testing/selftests/x86/test_compat_mmap.c -- 2.11.0
