kernel: generate BTF and enable ftrace, kprobes & dynamic debug

.gitignore

@@ -1 +1,2 @@
 _output
+kernel/*.old

Dockerfile

@@ -45,9 +45,9 @@ RUN echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.con
 # Install build dependencies
 RUN --mount=type=cache,sharing=locked,id=kernel-aptlib,target=/var/lib/apt \
     --mount=type=cache,sharing=locked,id=kernel-aptcache,target=/var/cache/apt \
-        apt-get update && apt-get install -y build-essential libncurses-dev flex bison libssl-dev libelf-dev bc cpio git wget xz-utils
+        apt-get update && apt-get install -y build-essential libncurses-dev flex bison libssl-dev libelf-dev bc cpio git wget xz-utils pahole
 
-ARG KERNEL_VERSION="6.12.46"
+ARG KERNEL_VERSION="6.12.44"
 ARG KERNEL_ARCH="x86_64"
 ARG KERNEL_NPROC="4"
 

kernel/config-6.12.44-arm64

@@ -19,7 +19,7 @@ CONFIG_GCC_ASM_GOTO_OUTPUT_BROKEN=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
 CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY=y
-CONFIG_PAHOLE_VERSION=0
+CONFIG_PAHOLE_VERSION=124
 CONFIG_IRQ_WORK=y
 CONFIG_BUILDTIME_TABLE_SORT=y
 CONFIG_THREAD_INFO_IN_TASK=y
@@ -96,9 +96,12 @@ CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
 # BPF subsystem
 #
 CONFIG_BPF_SYSCALL=y
-# CONFIG_BPF_JIT is not set
+CONFIG_BPF_JIT=y
+# CONFIG_BPF_JIT_ALWAYS_ON is not set
+CONFIG_BPF_JIT_DEFAULT_ON=y
 # CONFIG_BPF_UNPRIV_DEFAULT_OFF is not set
 # CONFIG_BPF_PRELOAD is not set
+# CONFIG_BPF_LSM is not set
 # end of BPF subsystem
 
 CONFIG_PREEMPT_NONE_BUILD=y
@@ -107,6 +110,7 @@ CONFIG_PREEMPT_NONE=y
 # CONFIG_PREEMPT is not set
 # CONFIG_PREEMPT_DYNAMIC is not set
 # CONFIG_SCHED_CORE is not set
+# CONFIG_SCHED_CLASS_EXT is not set
 
 #
 # CPU/Task time and stats accounting
@@ -133,6 +137,7 @@ CONFIG_TREE_RCU=y
 CONFIG_TREE_SRCU=y
 CONFIG_TASKS_RCU_GENERIC=y
 CONFIG_NEED_TASKS_RCU=y
+CONFIG_TASKS_RUDE_RCU=y
 CONFIG_TASKS_TRACE_RCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
@@ -253,6 +258,7 @@ CONFIG_PERF_EVENTS=y
 # end of Kernel Performance Events And Counters
 
 # CONFIG_PROFILING is not set
+CONFIG_TRACEPOINTS=y
 
 #
 # Kexec and crash features
@@ -616,9 +622,11 @@ CONFIG_CPU_MITIGATIONS=y
 #
 CONFIG_HOTPLUG_CORE_SYNC=y
 CONFIG_HOTPLUG_CORE_SYNC_DEAD=y
-# CONFIG_KPROBES is not set
+CONFIG_KPROBES=y
 # CONFIG_JUMP_LABEL is not set
+CONFIG_UPROBES=y
 CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_KRETPROBES=y
 CONFIG_HAVE_IOREMAP_PROT=y
 CONFIG_HAVE_KPROBES=y
 CONFIG_HAVE_KRETPROBES=y
@@ -682,6 +690,7 @@ CONFIG_HAVE_ARCH_HUGE_VMALLOC=y
 CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
 CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
 CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_ARCH_WANTS_EXECMEM_LATE=y
 CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
 CONFIG_SOFTIRQ_ON_OWN_STACK=y
 CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
@@ -728,7 +737,8 @@ CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
 
 CONFIG_HAVE_GCC_PLUGINS=y
 CONFIG_FUNCTION_ALIGNMENT_4B=y
-CONFIG_FUNCTION_ALIGNMENT=4
+CONFIG_FUNCTION_ALIGNMENT_8B=y
+CONFIG_FUNCTION_ALIGNMENT=8
 # end of General architecture-dependent options
 
 CONFIG_RT_MUTEXES=y
@@ -933,6 +943,7 @@ CONFIG_LRU_GEN_WALKS_MMU=y
 CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y
 CONFIG_PER_VMA_LOCK=y
 CONFIG_LOCK_MM_AND_FIND_VMA=y
+CONFIG_EXECMEM=y
 
 #
 # Data Access Monitoring
@@ -1405,6 +1416,7 @@ CONFIG_NET_FLOW_LIMIT=y
 # Network testing
 #
 # CONFIG_NET_PKTGEN is not set
+# CONFIG_NET_DROP_MONITOR is not set
 # end of Network testing
 # end of Networking options
 
@@ -1543,6 +1555,7 @@ CONFIG_DEVTMPFS_MOUNT=y
 # Firmware loader
 #
 CONFIG_FW_LOADER=y
+CONFIG_FW_LOADER_DEBUG=y
 CONFIG_EXTRA_FIRMWARE=""
 # CONFIG_FW_LOADER_USER_HELPER is not set
 # CONFIG_FW_LOADER_COMPRESS is not set
@@ -3104,6 +3117,7 @@ CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
 CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
 CONFIG_ARCH_USE_SYM_ANNOTATIONS=y
 # CONFIG_INDIRECT_PIO is not set
+# CONFIG_TRACE_MMIO_ACCESS is not set
 
 #
 # Crypto library routines
@@ -3190,6 +3204,8 @@ CONFIG_DMA_DIRECT_REMAP=y
 CONFIG_SGL_ALLOC=y
 CONFIG_CPU_RMAP=y
 CONFIG_DQL=y
+CONFIG_GLOB=y
+# CONFIG_GLOB_SELFTEST is not set
 CONFIG_NLATTR=y
 # CONFIG_IRQ_POLL is not set
 CONFIG_DIMLIB=y
@@ -3231,8 +3247,8 @@ CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
 CONFIG_CONSOLE_LOGLEVEL_QUIET=4
 CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
 # CONFIG_BOOT_PRINTK_DELAY is not set
-# CONFIG_DYNAMIC_DEBUG is not set
-# CONFIG_DYNAMIC_DEBUG_CORE is not set
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_DYNAMIC_DEBUG_CORE=y
 # CONFIG_SYMBOLIC_ERRNAME is not set
 CONFIG_DEBUG_BUGVERBOSE=y
 # end of printk and dmesg options
@@ -3253,6 +3269,9 @@ CONFIG_DEBUG_INFO_DWARF4=y
 CONFIG_DEBUG_INFO_COMPRESSED_NONE=y
 # CONFIG_DEBUG_INFO_COMPRESSED_ZLIB is not set
 # CONFIG_DEBUG_INFO_SPLIT is not set
+CONFIG_DEBUG_INFO_BTF=y
+CONFIG_PAHOLE_HAS_SPLIT_BTF=y
+CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
 # CONFIG_GDB_SCRIPTS is not set
 CONFIG_FRAME_WARN=2048
 # CONFIG_STRIP_ASM_SYMS is not set
@@ -3298,6 +3317,7 @@ CONFIG_SLUB_DEBUG=y
 # CONFIG_PAGE_OWNER is not set
 # CONFIG_PAGE_TABLE_CHECK is not set
 # CONFIG_PAGE_POISONING is not set
+# CONFIG_DEBUG_PAGE_REF is not set
 # CONFIG_DEBUG_RODATA_TEST is not set
 CONFIG_ARCH_HAS_DEBUG_WX=y
 # CONFIG_DEBUG_WX is not set
@@ -3404,17 +3424,70 @@ CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
 # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
 # CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
 # CONFIG_LATENCYTOP is not set
+# CONFIG_DEBUG_CGROUP_REF is not set
 CONFIG_USER_STACKTRACE_SUPPORT=y
+CONFIG_NOP_TRACER=y
 CONFIG_HAVE_FUNCTION_TRACER=y
 CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
 CONFIG_HAVE_FUNCTION_GRAPH_RETVAL=y
 CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
+CONFIG_HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS=y
 CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y
 CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_TRACE_CLOCK=y
+CONFIG_RING_BUFFER=y
+CONFIG_EVENT_TRACING=y
+CONFIG_CONTEXT_SWITCH_TRACER=y
+CONFIG_TRACING=y
+CONFIG_GENERIC_TRACER=y
 CONFIG_TRACING_SUPPORT=y
-# CONFIG_FTRACE is not set
+CONFIG_FTRACE=y
+# CONFIG_BOOTTIME_TRACING is not set
+CONFIG_FUNCTION_TRACER=y
+CONFIG_FUNCTION_GRAPH_TRACER=y
+# CONFIG_FUNCTION_GRAPH_RETVAL is not set
+CONFIG_DYNAMIC_FTRACE=y
+CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
+CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS=y
+CONFIG_DYNAMIC_FTRACE_WITH_ARGS=y
+# CONFIG_FUNCTION_PROFILER is not set
+# CONFIG_STACK_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_HWLAT_TRACER is not set
+# CONFIG_OSNOISE_TRACER is not set
+# CONFIG_TIMERLAT_TRACER is not set
+CONFIG_FTRACE_SYSCALLS=y
+# CONFIG_TRACER_SNAPSHOT is not set
+CONFIG_BRANCH_PROFILE_NONE=y
+# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
+# CONFIG_PROFILE_ALL_BRANCHES is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+CONFIG_PROBE_EVENTS_BTF_ARGS=y
+CONFIG_KPROBE_EVENTS=y
+# CONFIG_KPROBE_EVENTS_ON_NOTRACE is not set
+CONFIG_UPROBE_EVENTS=y
+CONFIG_BPF_EVENTS=y
+CONFIG_DYNAMIC_EVENTS=y
+CONFIG_PROBE_EVENTS=y
+CONFIG_FTRACE_MCOUNT_RECORD=y
+CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY=y
+# CONFIG_SYNTH_EVENTS is not set
+# CONFIG_USER_EVENTS is not set
+# CONFIG_HIST_TRIGGERS is not set
+# CONFIG_TRACE_EVENT_INJECT is not set
+# CONFIG_TRACEPOINT_BENCHMARK is not set
+# CONFIG_RING_BUFFER_BENCHMARK is not set
+# CONFIG_TRACE_EVAL_MAP_FILE is not set
+# CONFIG_FTRACE_RECORD_RECURSION is not set
+# CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING is not set
+# CONFIG_FTRACE_STARTUP_TEST is not set
+# CONFIG_RING_BUFFER_STARTUP_TEST is not set
+# CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set
+# CONFIG_RV is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y
 CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y
@@ -3432,6 +3505,7 @@ CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y
 #
 # CONFIG_KUNIT is not set
 # CONFIG_NOTIFIER_ERROR_INJECTION is not set
+# CONFIG_FUNCTION_ERROR_INJECTION is not set
 # CONFIG_FAULT_INJECTION is not set
 CONFIG_ARCH_HAS_KCOV=y
 CONFIG_CC_HAS_SANCOV_TRACE_PC=y