endmenu # "printk and dmesg options"
+# Clang is known to generate .{s,u}leb128 with symbol deltas with DWARF5, which
+# some targets may not support: https://sourceware.org/bugzilla/show_bug.cgi?id=27215
+config AS_HAS_NON_CONST_LEB128
+ def_bool $(as-instr,.uleb128 .Lexpr_end4 - .Lexpr_start3\n.Lexpr_start3:\n.Lexpr_end4:)
+
menu "Compile-time checks and compiler options"
config DEBUG_INFO
config DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
bool "Rely on the toolchain's implicit default DWARF version"
+ depends on !CC_IS_CLANG || AS_IS_LLVM || CLANG_VERSION < 140000 || (AS_IS_GNU && AS_VERSION >= 23502 && AS_HAS_NON_CONST_LEB128)
help
The implicit default version of DWARF debug info produced by a
toolchain changes over time.
config DEBUG_INFO_DWARF5
bool "Generate DWARF Version 5 debuginfo"
- depends on !CC_IS_CLANG || (CC_IS_CLANG && (AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502)))
+ depends on !CC_IS_CLANG || AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502 && AS_HAS_NON_CONST_LEB128)
depends on !DEBUG_INFO_BTF
help
Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc
int "Warn for stack frames larger than"
range 0 8192
default 2048 if GCC_PLUGIN_LATENT_ENTROPY
- default 1536 if (!64BIT && (PARISC || XTENSA))
- default 1024 if (!64BIT && !PARISC)
+ default 2048 if PARISC
+ default 1536 if (!64BIT && XTENSA)
+ default 1280 if KASAN && !64BIT
+ default 1024 if !64BIT
default 2048 if 64BIT
help
Tell gcc to warn at build time for stack frames larger than this.
If unsure, say N.
config FUNCTION_ERROR_INJECTION
- def_bool y
+ bool "Fault-injections of functions"
depends on HAVE_FUNCTION_ERROR_INJECTION && KPROBES
+ help
+ Add fault injections into various functions that are annotated with
+ ALLOW_ERROR_INJECTION() in the kernel. BPF may also modify the return
+ value of theses functions. This is useful to test error paths of code.
+
+ If unsure, say N
config FAULT_INJECTION
bool "Fault-injection framework"