[RFC PATCH 2/2] lkdtm: test copy_to_user() on bad kernel pointer under KERNEL_DS

Test whether the kernel WARN()s when, under KERNEL_DS, a bad kernel pointer is used as "userspace" pointer. Test with "DIRECT" mode. Signed-off-by: Jann Horn --- drivers/misc/lkdtm/core.c | 1 + drivers/misc/lkdtm/lkdtm.h| 1 + drivers/misc/lkdtm/usercopy.c | 13 + 3 files

[RFC PATCH 2/2] lkdtm: test copy_to_user() on bad kernel pointer under KERNEL_DS

Test whether the kernel WARN()s when, under KERNEL_DS, a bad kernel pointer is used as "userspace" pointer. Test with "DIRECT" mode. Signed-off-by: Jann Horn --- drivers/misc/lkdtm/core.c | 1 + drivers/misc/lkdtm/lkdtm.h| 1 + drivers/misc/lkdtm/usercopy.c | 13 + 3 files