From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792774521; b=JBz7cP+VegcOelpbexPeH0T0JIM8Ef/cQK83BbyeOXa4j49LhayP7bseCIttNLXWnvbf nZDVfRApaVXGeAZFnoiK0BXwXaY3I3C27l2IpBPxTZOLu06JaWyCacTF/MDICiL/k1ifI AY7ku0munFjJadZQYlOZiUZFWTtvXJy8CLZdISeRZhmzrohQHQz+1i7bPFRTQc8rKi/KA 1CbO+zZkpZl0WHNmsOerRsR0Xy50Rzq+5h0EAKlYfzYd4d/0mDkvDd4xxwVvc/PFZJQGb iyJjVSIGhyUCN9I0GW0O2YPkznuOiDo7b9vpMZib6MNmxEbPP5bia8oXQhH7/iHh92w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774521; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=6F2vg4ha5E/CxzWViGdOY4/FrUliHSkUA2yWhAil55Y=; b=mOJDESNeVXvqMD/VUWKq4DTjmDNzYA4yJpQzJOo/ex6BW3MV5elwsRR1b5SoZ2vkZH6N 8sYjBbooxaz0j96eabknJCH2wynAmDsTCCM75/0O6pED7Lwfa8e+X9Xzg4PQREnFHXCFX MsGMmjEiFvCaIQhocjKCJK6LBzSUSnNfCwgTEneCoo7hkvDV+fwpkYWi/99hZVYyJC9D6 2UhuI2bIETJIPw2sSNrJGUGQPWWuRwu+Inq96GufWNPdHMj2ggNQut1ek90lzfng/cyjM VWiA/eY3P+T/FPTVxrWlIWrkiugy82MrXL989zlyHO3Pleln0qm1WoOxn8P76ix8GkQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=0y+Sq9Sh; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D2B19606A31B; Fri, 23 Oct 2026 16:55:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=0y+Sq9Sh Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C1DF1F01825; Fri, 23 Oct 2026 16:55:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774520; bh=6F2vg4ha5E/CxzWViGdOY4/FrUliHSkUA2yWhAil55Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0y+Sq9ShAsT0xvgEhqvQ3SKz1vDhup0NEBDORquxDHAdRtzOyHyH2brJJ2WNfw5gq XbC7ivfeFF7bYx5Yb7diGYqIJoWcFguuWm9lyQCIa83X76aWaCHTK8kORDi14NwKrC 7s1UtSwO/HN6u3KMPqvUpD9WtW3Rrcs8YXZHYEHM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Guenter Roeck , Vincent Donnefort , Steven Rostedt , Sasha Levin Subject: [PATCH 7.2 068/242] tracing: Fix empty symbol names in simple_ring_buffer undef check Date: Fri, 23 Oct 2026 18:38:30 +0200 Message-ID: <20261023163715.390115271@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261023163713.816071858@linuxfoundation.org> References: <20261023163713.816071858@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vincent Donnefort [ Upstream commit c902b6d709845def1d1d3ab818e0b9d9b962ab16 ] 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 Signed-off-by: Sasha Levin --- kernel/trace/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index f934ff586bd43..0e1846f7dda32 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