diff options
| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/xtensa/Kconfig.debug | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
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 <kees+treewide@kernel.org>
Diffstat (limited to 'arch/xtensa/Kconfig.debug')
| -rw-r--r-- | arch/xtensa/Kconfig.debug | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/xtensa/Kconfig.debug b/arch/xtensa/Kconfig.debug new file mode 100644 index 000000000..e84172a77 --- /dev/null +++ b/arch/xtensa/Kconfig.debug @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: GPL-2.0 + +config DEBUG_TLB_SANITY + bool "Debug TLB sanity" + depends on DEBUG_KERNEL && MMU + help + Enable this to turn on TLB sanity check on each entry to userspace. + This check can spot missing TLB invalidation/wrong PTE permissions/ + premature page freeing. + + If unsure, say N. + +config LD_NO_RELAX + bool "Disable linker relaxation" + default y + help + Enable this function to disable link-time optimizations. + The default linker behavior is to combine identical literal + values to reduce code size and remove unnecessary overhead from + assembler-generated 'longcall' sequences. + Enabling this option improves the link time but increases the + code size, and possibly execution time. + +config S32C1I_SELFTEST + bool "Perform S32C1I instruction self-test at boot" + default y + help + Enable this option to test S32C1I instruction behavior at boot. + Correct operation of this instruction requires some cooperation from hardware + external to the processor (such as bus bridge, bus fabric, or memory controller). + It is easy to make wrong hardware configuration, this test should catch it early. + + Say 'N' on stable hardware. + +config PRINT_STACK_DEPTH + int "Stack depth to print" if DEBUG_KERNEL + default 64 + help + This option allows you to set the stack depth that the kernel + prints in stack traces. + +config PRINT_USER_CODE_ON_UNHANDLED_EXCEPTION + bool "Dump user code around unhandled exception address" + help + Enable this option to display user code around PC of the unhandled + exception (starting at address aligned on 16 byte boundary). + This may simplify finding faulting code in the absence of other + debug facilities. |
