From 0aaa8977acbf3996d351f51b3b15295943092f63 Mon Sep 17 00:00:00 2001 From: Qian Cai Date: Wed, 19 Jan 2022 18:10:18 -0800 Subject: configs: introduce debug.config for CI-like setup Some general debugging features like kmemleak, KASAN, lockdep, UBSAN etc help fix many viruses like a microscope. On the other hand, those features are scatter around and mixed up with more situational debugging options making them difficult to consume properly. This cold help amplify the general debugging/testing efforts and help establish sensitive default values for those options across the broad. This could also help different distros to collaborate on maintaining debug-flavored kernels. The config is based on years' experiences running daily CI inside the largest enterprise Linux distro company to seek regressions on linux-next builds on different bare-metal and virtual platforms. It can be used for example, $ make ARCH=arm64 defconfig debug.config Since KASAN and KCSAN can't be enabled together, we will need to create a separate one for KCSAN later as well. Link: https://lkml.kernel.org/r/20211115134754.7334-1-quic_qiancai@quicinc.com Signed-off-by: Qian Cai Acked-by: Paul E. McKenney Cc: Marco Elver Cc: Dmitry Vyukov Cc: Daniel Thompson Cc: Masahiro Yamada Cc: Naresh Kamboju Cc: "Stephen Rothwell" Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/configs/debug.config | 105 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 kernel/configs/debug.config (limited to 'kernel/configs') diff --git a/kernel/configs/debug.config b/kernel/configs/debug.config new file mode 100644 index 000000000000..e9ffb0cc1eec --- /dev/null +++ b/kernel/configs/debug.config @@ -0,0 +1,105 @@ +# The config is based on running daily CI for enterprise Linux distros to +# seek regressions on linux-next builds on different bare-metal and virtual +# platforms. It can be used for example, +# +# $ make ARCH=arm64 defconfig debug.config +# +# Keep alphabetically sorted inside each section. +# +# printk and dmesg options +# +CONFIG_DEBUG_BUGVERBOSE=y +CONFIG_DYNAMIC_DEBUG=y +CONFIG_PRINTK_CALLER=y +CONFIG_PRINTK_TIME=y +CONFIG_SYMBOLIC_ERRNAME=y +# +# Compile-time checks and compiler options +# +CONFIG_DEBUG_INFO=y +CONFIG_DEBUG_SECTION_MISMATCH=y +CONFIG_FRAME_WARN=2048 +CONFIG_SECTION_MISMATCH_WARN_ONLY=y +# +# Generic Kernel Debugging Instruments +# +# CONFIG_UBSAN_ALIGNMENT is not set +# CONFIG_UBSAN_DIV_ZERO is not set +# CONFIG_UBSAN_TRAP is not set +# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set +CONFIG_DEBUG_FS=y +CONFIG_DEBUG_FS_ALLOW_ALL=y +CONFIG_DEBUG_IRQFLAGS=y +CONFIG_UBSAN=y +CONFIG_UBSAN_BOOL=y +CONFIG_UBSAN_BOUNDS=y +CONFIG_UBSAN_ENUM=y +CONFIG_UBSAN_SHIFT=y +CONFIG_UBSAN_UNREACHABLE=y +# +# Memory Debugging +# +# CONFIG_DEBUG_PAGEALLOC is not set +# CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set +# CONFIG_DEBUG_RODATA_TEST is not set +# CONFIG_DEBUG_WX is not set +# CONFIG_KFENCE is not set +# CONFIG_PAGE_POISONING is not set +# CONFIG_SLUB_STATS is not set +CONFIG_PAGE_EXTENSION=y +CONFIG_PAGE_OWNER=y +CONFIG_DEBUG_KMEMLEAK=y +CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y +CONFIG_DEBUG_OBJECTS=y +CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1 +CONFIG_DEBUG_OBJECTS_FREE=y +CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y +CONFIG_DEBUG_OBJECTS_RCU_HEAD=y +CONFIG_DEBUG_OBJECTS_TIMERS=y +CONFIG_DEBUG_OBJECTS_WORK=y +CONFIG_DEBUG_PER_CPU_MAPS=y +CONFIG_DEBUG_STACK_USAGE=y +CONFIG_DEBUG_VIRTUAL=y +CONFIG_DEBUG_VM=y +CONFIG_DEBUG_VM_PGFLAGS=y +CONFIG_DEBUG_VM_RB=y +CONFIG_DEBUG_VM_VMACACHE=y +CONFIG_GENERIC_PTDUMP=y +CONFIG_KASAN=y +CONFIG_KASAN_GENERIC=y +CONFIG_KASAN_INLINE=y +CONFIG_KASAN_VMALLOC=y +CONFIG_PTDUMP_DEBUGFS=y +CONFIG_SCHED_STACK_END_CHECK=y +CONFIG_SLUB_DEBUG_ON=y +# +# Debug Oops, Lockups and Hangs +# +# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set +CONFIG_DEBUG_ATOMIC_SLEEP=y +CONFIG_DETECT_HUNG_TASK=y +CONFIG_PANIC_ON_OOPS=y +CONFIG_PANIC_TIMEOUT=0 +CONFIG_SOFTLOCKUP_DETECTOR=y +# +# Lock Debugging (spinlocks, mutexes, etc...) +# +# CONFIG_PROVE_RAW_LOCK_NESTING is not set +CONFIG_PROVE_LOCKING=y +# +# Debug kernel data structures +# +CONFIG_BUG_ON_DATA_CORRUPTION=y +# +# RCU Debugging +# +CONFIG_PROVE_RCU=y +CONFIG_PROVE_RCU_LIST=y +# +# Tracers +# +CONFIG_BRANCH_PROFILE_NONE=y +CONFIG_DYNAMIC_FTRACE=y +CONFIG_FTRACE=y +CONFIG_FUNCTION_TRACER=y -- cgit v1.2.3