From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 912FD51C04B for ; Thu, 15 Oct 2026 13:34:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792071245; cv=none; b=AyrSzaMRweBAWVTw8CtzO50taxiR1HiXFEjYx/GOKN2anHHPUJjyHZSPMhRZgEUlrQT4TbIQw7VA10RcHw2RjCEZkKRPMxP8ZdQzST2YGJmm1j34I+w39iBd4HUHpQSB55txD6XDc1ipg1FsiQSnflbRYk5RvsEACf+LbV9EXlw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792071245; c=relaxed/simple; bh=Bma6ut+lIHPFylhYLl6jiyEJ4ay9QtOxps6ouBjOKIs=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=qtpNELPoVqfsI+orV0QzTbIglzHkC7Aebi4v2m4IFRBV0itdZv8AucGPj/09pJEY0EEieciuzUaeUFGUKTxoe9RDvL3b7mRIQJGKhdWphY99Vs8IzI7kOAXE3VUuDi8/eP274qMiqa3dEupmnElRINhYDny9JrDsL0QCpfs3yR8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LP/bjoss; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LP/bjoss" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05AD01F000CB; Thu, 15 Oct 2026 13:34:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792071244; bh=11m1xelGwRulo2WJfpiwGZ7vv7ZcFKzKRfQi0ZIGvP4=; h=Date:From:To:Cc:Subject:References; b=LP/bjossQgkcXxc23NE+N4oT0Sb8rqmzAlzPytiswa/j4OzssFFJGGbTccNorcyXS /nVAd9yJKS4y4KqeRVl6o+xmShfcvUVLqcuUPQcMuKhLda148L6E9Palo61R528Nz2 Q6ZW5AcaaXmALX6jC7ccKyRLAx4g6Vpdu0kVJyanCYG7HGu8FahzV4dylDnR+XOGI6 VjHDn0jbD/pPnMU1UHokyf5WLbWXn08KMsqaUCj6RfBV+LzE09lgIAMVdYsREGbLyf yoB/beF2m2CvgEjsxTIHllmMOiIOfTRIPMLkXM+/wllXcsUyha763Oc0MGjXj1QUE2 Ix4RZkqhk1eQQ== Received: from rostedt by gandalf with local (Exim 4.100.1) (envelope-from ) id 1xHLat-00000000Mcj-1RqW; Thu, 15 Oct 2026 09:34:03 -0400 Message-ID: <20261015133403.155306547@kernel.org> User-Agent: quilt/0.69 Date: Thu, 15 Oct 2026 09:33:16 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Guenter Roeck , Vincent Donnefort Subject: [for-linus][PATCH 06/16] tracing: Fix empty symbol names in simple_ring_buffer undef check References: <20261015133310.731003448@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 From: Vincent Donnefort Sparc64 emits empty symmbol names. Skips them when establishing the allowlist and when extracing undefined symbols. Link: https://patch.msgid.link/20260923074213.3077182-2-vdonnefort@google.com Fixes: 1211907ac0b5 ("tracing: Generate undef symbols allowlist for simple_ring_buffer") Reported-by: Guenter Roeck Closes: https://lore.kernel.org/all/5574c9e6-9ed2-4ee6-a2b2-fb6ee81e83a1@roeck-us.net/ Signed-off-by: Vincent Donnefort Tested-by: Guenter Roeck Signed-off-by: Steven Rostedt --- kernel/trace/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index f934ff586bd4..0e1846f7dda3 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -146,11 +146,11 @@ KASAN_SANITIZE_undefsyms_base.o := y UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __msan \ __aeabi_unwind_cpp __s390_indirect_jump __x86_indirect_thunk simple_ring_buffer \ - $(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null | awk '{print $$2}') + $(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null | awk '$$2 {print $$2}') quiet_cmd_check_undefined = NM $< cmd_check_undefined = \ - undefsyms=$$($(NM) -u $< | grep -v $(addprefix -e , $(UNDEFINED_ALLOWLIST)) || true); \ + undefsyms=$$($(NM) -u $< | awk '$$2 {print $$2}' | grep -v $(addprefix -e , $(UNDEFINED_ALLOWLIST)) || true); \ if [ -n "$$undefsyms" ]; then \ echo "Unexpected symbols in $<:" >&2; \ echo "$$undefsyms" >&2; \ -- 2.53.0