On Mon, Nov 15, 2021 at 08:47:54AM -0500, Qian Cai wrote: > 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. > > Signed-off-by: Qian Cai <quic_qiancai@xxxxxxxxxxx> > --- > v5: > - Removed CONFIG_RCU_CPU_STALL_TIMEOUT as an old bug had already been fixed > and now the default is sane. Given this change, from an RCU perspective: Acked-by: Paul E. McKenney <paulmck@xxxxxxxxxx> > - Updated the changelog for the motivation. > - Rebased to v5.16-rc1. > > kernel/configs/debug.config | 105 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 105 insertions(+) > create mode 100644 kernel/configs/debug.config > > 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 > -- > 2.30.2 >
