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 --- arch/arm/mm/fsr-2level.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 arch/arm/mm/fsr-2level.c (limited to 'arch/arm/mm/fsr-2level.c') diff --git a/arch/arm/mm/fsr-2level.c b/arch/arm/mm/fsr-2level.c new file mode 100644 index 000000000..f2be95197 --- /dev/null +++ b/arch/arm/mm/fsr-2level.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0 +static struct fsr_info fsr_info[] = { + /* + * The following are the standard ARMv3 and ARMv4 aborts. ARMv5 + * defines these to be "precise" aborts. + */ + { do_bad, SIGSEGV, 0, "vector exception" }, + { do_bad, SIGBUS, BUS_ADRALN, "alignment exception" }, + { do_bad, SIGKILL, 0, "terminal exception" }, + { do_bad, SIGBUS, BUS_ADRALN, "alignment exception" }, + { do_bad, SIGBUS, 0, "external abort on linefetch" }, + { do_translation_fault, SIGSEGV, SEGV_MAPERR, "section translation fault" }, + { do_bad, SIGBUS, 0, "external abort on linefetch" }, + { do_page_fault, SIGSEGV, SEGV_MAPERR, "page translation fault" }, + { do_bad, SIGBUS, 0, "external abort on non-linefetch" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "section domain fault" }, + { do_bad, SIGBUS, 0, "external abort on non-linefetch" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "page domain fault" }, + { do_bad, SIGBUS, 0, "external abort on translation" }, + { do_sect_fault, SIGSEGV, SEGV_ACCERR, "section permission fault" }, + { do_bad, SIGBUS, 0, "external abort on translation" }, + { do_page_fault, SIGSEGV, SEGV_ACCERR, "page permission fault" }, + /* + * The following are "imprecise" aborts, which are signalled by bit + * 10 of the FSR, and may not be recoverable. These are only + * supported if the CPU abort handler supports bit 10. + */ + { do_bad, SIGBUS, 0, "unknown 16" }, + { do_bad, SIGBUS, 0, "unknown 17" }, + { do_bad, SIGBUS, 0, "unknown 18" }, + { do_bad, SIGBUS, 0, "unknown 19" }, + { do_bad, SIGBUS, 0, "lock abort" }, /* xscale */ + { do_bad, SIGBUS, 0, "unknown 21" }, + { do_bad, SIGBUS, BUS_OBJERR, "imprecise external abort" }, /* xscale */ + { do_bad, SIGBUS, 0, "unknown 23" }, + { do_bad, SIGBUS, 0, "dcache parity error" }, /* xscale */ + { do_bad, SIGBUS, 0, "unknown 25" }, + { do_bad, SIGBUS, 0, "unknown 26" }, + { do_bad, SIGBUS, 0, "unknown 27" }, + { do_bad, SIGBUS, 0, "unknown 28" }, + { do_bad, SIGBUS, 0, "unknown 29" }, + { do_bad, SIGBUS, 0, "unknown 30" }, + { do_bad, SIGBUS, 0, "unknown 31" }, +}; + +static struct fsr_info ifsr_info[] = { + { do_bad, SIGBUS, 0, "unknown 0" }, + { do_bad, SIGBUS, 0, "unknown 1" }, + { do_bad, SIGBUS, 0, "debug event" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "section access flag fault" }, + { do_bad, SIGBUS, 0, "unknown 4" }, + { do_translation_fault, SIGSEGV, SEGV_MAPERR, "section translation fault" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "page access flag fault" }, + { do_page_fault, SIGSEGV, SEGV_MAPERR, "page translation fault" }, + { do_bad, SIGBUS, 0, "external abort on non-linefetch" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "section domain fault" }, + { do_bad, SIGBUS, 0, "unknown 10" }, + { do_bad, SIGSEGV, SEGV_ACCERR, "page domain fault" }, + { do_bad, SIGBUS, 0, "external abort on translation" }, + { do_sect_fault, SIGSEGV, SEGV_ACCERR, "section permission fault" }, + { do_bad, SIGBUS, 0, "external abort on translation" }, + { do_page_fault, SIGSEGV, SEGV_ACCERR, "page permission fault" }, + { do_bad, SIGBUS, 0, "unknown 16" }, + { do_bad, SIGBUS, 0, "unknown 17" }, + { do_bad, SIGBUS, 0, "unknown 18" }, + { do_bad, SIGBUS, 0, "unknown 19" }, + { do_bad, SIGBUS, 0, "unknown 20" }, + { do_bad, SIGBUS, 0, "unknown 21" }, + { do_bad, SIGBUS, 0, "unknown 22" }, + { do_bad, SIGBUS, 0, "unknown 23" }, + { do_bad, SIGBUS, 0, "unknown 24" }, + { do_bad, SIGBUS, 0, "unknown 25" }, + { do_bad, SIGBUS, 0, "unknown 26" }, + { do_bad, SIGBUS, 0, "unknown 27" }, + { do_bad, SIGBUS, 0, "unknown 28" }, + { do_bad, SIGBUS, 0, "unknown 29" }, + { do_bad, SIGBUS, 0, "unknown 30" }, + { do_bad, SIGBUS, 0, "unknown 31" }, +}; -- cgit v1.3.1