From: Arnd Bergmann Date: Thu, 12 Mar 2026 12:35:43 +0000 (+0100) Subject: tracing: add more symbols to whitelist X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7e4b6c94300e355a72670c5b896ccc26ac312c63;p=thirdparty%2Flinux.git tracing: add more symbols to whitelist Randconfig builds show a number of cryptic build errors from hitting undefined symbols in simple_ring_buffer.o: make[7]: *** [/home/arnd/arm-soc/kernel/trace/Makefile:147: kernel/trace/simple_ring_buffer.o.checked] Error 1 These happen with CONFIG_TRACE_BRANCH_PROFILING, CONFIG_KASAN_HW_TAGS, CONFIG_STACKPROTECTOR, CONFIG_DEBUG_IRQFLAGS and indirectly from WARN_ON(). Add exceptions for each one that I have hit so far on arm64, x86_64 and arm randconfig builds. Other architectures likely hit additional ones, so it would be nice to produce a little more verbose output that include the name of the missing symbols directly. Fixes: a717943d8ecc ("tracing: Check for undefined symbols in simple_ring_buffer") Signed-off-by: Arnd Bergmann Link: https://patch.msgid.link/20260312123601.625063-2-arnd@kernel.org Signed-off-by: Marc Zyngier --- diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index 3cc490aadc995..beb15936829d4 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -1,4 +1,4 @@ -# SPDX-License-Identifier: GPL-2.0 + # Do not instrument the tracer itself: @@ -139,6 +139,8 @@ obj-$(CONFIG_TRACE_REMOTE_TEST) += remote_test.o UNDEFINED_ALLOWLIST := memset alt_cb_patch_nops __x86 __ubsan __asan __kasan __gcov __aeabi_unwind UNDEFINED_ALLOWLIST += __stack_chk_fail stackleak_track_stack __ref_stack __sanitizer llvm_gcda llvm_gcov UNDEFINED_ALLOWLIST += .TOC\. __clear_pages_unrolled __memmove copy_page warn_slowpath_fmt +UNDEFINED_ALLOWLIST += ftrace_likely_update __hwasan_load __hwasan_store __hwasan_tag_memory +UNDEFINED_ALLOWLIST += warn_bogus_irq_restore __stack_chk_guard UNDEFINED_ALLOWLIST := $(addprefix -e , $(UNDEFINED_ALLOWLIST)) quiet_cmd_check_undefined = NM $<