The patchsets help to produce KASAN report when size is negative numbers in memory operation function. It is helpful for programmer to solve the undefined behavior issue. Patch 1 based on Dmitry's review and suggestion, patch 2 is a test in order to verify the patch 1.
[1]https://bugzilla.kernel.org/show_bug.cgi?id=199341 [2]https://lore.kernel.org/linux-arm-kernel/[email protected]/ Walter Wu (2): kasan: detect negative size in memory operation function kasan: add test for invalid size in memmove --- lib/test_kasan.c | 18 ++++++++++++++++++ mm/kasan/common.c | 13 ++++++++----- mm/kasan/generic.c | 5 +++++ mm/kasan/generic_report.c | 18 ++++++++++++++++++ mm/kasan/tags.c | 5 +++++ mm/kasan/tags_report.c | 17 +++++++++++++++++ 6 files changed, 71 insertions(+), 5 deletions(-) -- 2.18.0
