1# Help: Debugging for CI systems and finding regressions
  2#
  3# The config is based on running daily CI for enterprise Linux distros to
  4# seek regressions on linux-next builds on different bare-metal and virtual
  5# platforms. It can be used for example,
  6#
  7# $ make ARCH=arm64 defconfig debug.config
  8#
  9# Keep alphabetically sorted inside each section.
 10#
 11# printk and dmesg options
 12#
 13CONFIG_DEBUG_BUGVERBOSE=y
 14CONFIG_DYNAMIC_DEBUG=y
 15CONFIG_PRINTK_CALLER=y
 16CONFIG_PRINTK_TIME=y
 17CONFIG_SYMBOLIC_ERRNAME=y
 18#
 19# Compile-time checks and compiler options
 20#
 21CONFIG_DEBUG_INFO=y
 22CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 23CONFIG_DEBUG_SECTION_MISMATCH=y
 24CONFIG_FRAME_WARN=2048
 25CONFIG_SECTION_MISMATCH_WARN_ONLY=y
 26#
 27# Generic Kernel Debugging Instruments
 28#
 29# CONFIG_UBSAN_ALIGNMENT is not set
 30# CONFIG_UBSAN_DIV_ZERO is not set
 31# CONFIG_UBSAN_TRAP is not set
 32# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
 33CONFIG_DEBUG_FS=y
 34CONFIG_DEBUG_FS_ALLOW_ALL=y
 35CONFIG_DEBUG_IRQFLAGS=y
 36CONFIG_UBSAN=y
 37CONFIG_UBSAN_BOOL=y
 38CONFIG_UBSAN_BOUNDS=y
 39CONFIG_UBSAN_ENUM=y
 40CONFIG_UBSAN_SHIFT=y
 41CONFIG_UBSAN_UNREACHABLE=y
 42#
 43# Networking Debugging
 44#
 45CONFIG_NET_DEV_REFCNT_TRACKER=y
 46CONFIG_NET_NS_REFCNT_TRACKER=y
 47CONFIG_DEBUG_NET=y
 48#
 49# Memory Debugging
 50#
 51# CONFIG_DEBUG_PAGEALLOC is not set
 52# CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set
 53# CONFIG_DEBUG_RODATA_TEST is not set
 54# CONFIG_DEBUG_WX is not set
 55# CONFIG_KFENCE is not set
 56# CONFIG_PAGE_POISONING is not set
 57# CONFIG_SLUB_STATS is not set
 58CONFIG_PAGE_EXTENSION=y
 59CONFIG_PAGE_OWNER=y
 60CONFIG_DEBUG_KMEMLEAK=y
 61CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y
 62CONFIG_DEBUG_OBJECTS=y
 63CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
 64CONFIG_DEBUG_OBJECTS_FREE=y
 65CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
 66CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
 67CONFIG_DEBUG_OBJECTS_TIMERS=y
 68CONFIG_DEBUG_OBJECTS_WORK=y
 69CONFIG_DEBUG_PER_CPU_MAPS=y
 70CONFIG_DEBUG_STACK_USAGE=y
 71CONFIG_DEBUG_VIRTUAL=y
 72CONFIG_DEBUG_VM=y
 73CONFIG_DEBUG_VM_PGFLAGS=y
 74CONFIG_DEBUG_VM_RB=y
 75CONFIG_DEBUG_VM_VMACACHE=y
 76CONFIG_GENERIC_PTDUMP=y
 77CONFIG_KASAN=y
 78CONFIG_KASAN_GENERIC=y
 79CONFIG_KASAN_INLINE=y
 80CONFIG_KASAN_VMALLOC=y
 81CONFIG_PTDUMP_DEBUGFS=y
 82CONFIG_SCHED_STACK_END_CHECK=y
 83CONFIG_SLUB_DEBUG_ON=y
 84#
 85# Debug Oops, Lockups and Hangs
 86#
 87# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 88# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
 89CONFIG_DEBUG_ATOMIC_SLEEP=y
 90CONFIG_DETECT_HUNG_TASK=y
 91CONFIG_PANIC_ON_OOPS=y
 92CONFIG_PANIC_TIMEOUT=0
 93CONFIG_SOFTLOCKUP_DETECTOR=y
 94#
 95# Lock Debugging (spinlocks, mutexes, etc...)
 96#
 97# CONFIG_PROVE_RAW_LOCK_NESTING is not set
 98CONFIG_PROVE_LOCKING=y
 99#
100# Debug kernel data structures
101#
102CONFIG_BUG_ON_DATA_CORRUPTION=y
103#
104# RCU Debugging
105#
106CONFIG_RCU_EXPERT=y
107CONFIG_PROVE_RCU=y
108CONFIG_PROVE_RCU_LIST=y
109#
110# Tracers
111#
112CONFIG_BRANCH_PROFILE_NONE=y
113CONFIG_DYNAMIC_FTRACE=y
114CONFIG_FTRACE=y
115CONFIG_FUNCTION_TRACER=y