usercopy: Enhance and rename report_usercopy()

In preparation for refactoring the usercopy checks to pass offset to
the hardened usercopy report, this renames report_usercopy() to the
more accurate usercopy_abort(), marks it as noreturn because it is,
adds a hopefully helpful comment for anyone investigating such reports,
makes the function available to the slab allocators, and adds new "detail"
and "offset" arguments.

Signed-off-by: Kees Cook <keescook@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 9b341584eb1b..ae39444896d4 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -138,6 +138,7 @@ static int __dead_end_function(struct objtool_file *file, struct symbol *func,
                 "__reiserfs_panic",
                 "lbug_with_loc",
                 "fortify_panic",
+                "usercopy_abort",
         };
 
         if (func->bind == STB_WEAK)