From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- scripts/makelst | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100755 scripts/makelst (limited to 'scripts/makelst') diff --git a/scripts/makelst b/scripts/makelst new file mode 100755 index 000000000..e432af073 --- /dev/null +++ b/scripts/makelst @@ -0,0 +1,32 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# A script to dump mixed source code & assembly +# with correct relocations from System.map +# Requires the following lines in makefile: +#%.lst: %.c +# $(CC) $(c_flags) -g -c -o $*.o $< && +# $(srctree)/scripts/makelst $*.o System.map $(OBJDUMP) > $@ +# +# Copyright (C) 2000 IBM Corporation +# Author(s): DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) +# William Stearns +# + +# awk style field access +field() { + shift $1 ; echo $1 +} + +t1=`$3 --syms $1 | grep .text | grep -m1 " F "` +if [ -n "$t1" ]; then + t2=`field 6 $t1` + if [ ! -r $2 ]; then + echo "No System.map" >&2 + else + t3=`grep $t2 $2` + t4=`field 1 $t3` + t5=`field 1 $t1` + t6=`printf "%lu" $((0x$t4 - 0x$t5))` + fi +fi +$3 -r --source --adjust-vma=${t6:-0} $1 -- cgit v1.3.1