Hi Linus, Please pull this usercopy fix for v5.4-rc1. Randy found a corner case (HIGHMEM, DEBUG_VIRTUAL, >512MB RAM) with hardened usercopy that went unnoticed since v4.8. This adds HIGHMEM awareness to hardened usercopy, and has been living in -next for a bit more than a week now.
Thanks! -Kees The following changes since commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8: Linux 5.3 (2019-09-15 14:19:32 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/usercopy-v5.4-rc1 for you to fetch changes up to 314eed30ede02fa925990f535652254b5bad6b65: usercopy: Avoid HIGHMEM pfn warning (2019-09-17 15:20:17 -0700) ---------------------------------------------------------------- Fix hardened usercopy under CONFIG_DEBUG_VIRTUAL ---------------------------------------------------------------- Kees Cook (1): usercopy: Avoid HIGHMEM pfn warning mm/usercopy.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) -- Kees Cook
