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 79AB951992F 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=FiNH4W9A2l7yXx+kTh5B1SZxPPVfKQfIJmkVnXxGdr171KQJopjZO1dio/EZD2FhGI2NvWIbRjYzC26oAKYJpym0IfL9V6pt70Eh0pTAkE8h9Eln+u60XeSGjdThkCEgSjuTT30brFsPDY19PeC3bYGG0z9pMf3x45NpUPTVYYo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792071245; c=relaxed/simple; bh=H22pMAj5FiNys53DaMXak/U2WiYZOBUZfF77Z+pPOwQ=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=kcRTj0/8QexEh24eHi7OJ2GCrPOwSWJZHhgr9NLNMgseMzNlnTiC1noumgPlWIk/uVGg67MwP5LWDtmxv7dDLiHLww4aaUA2IAmVRTs1MqpOTiHQPXCzeiv2SSEZIoP9la2/NInSyWCZBbln2dz+AWSZb56kmkPRSA/xxKGZGDQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B4hhOEki; 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="B4hhOEki" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41A361F000CA; 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=ANtwYDA0L5TyVSz9dXD3XljmTUB/zboBLunCtqBHSeE=; h=Date:From:To:Cc:Subject:References; b=B4hhOEkia0kxyc8l/NT5qkh7LH9St9QnzEIp7gFUv5/HnNBaS5hhAl98rbz0aHeBj VUk7mdBAekdK2vu4frh8mwo7s311sQxuUcvuNEbGupq3PT6s16fgsMVkI58nlxEXl0 rqP0x8FumrYPh4WVYa1HXk7D98C20sNOvngx8kPGGUThophbvGpFwdc1rpIEXFW7Hq ewO1i672DD+V6o/ulN1dJHwXxmL09ONv5bJW3J3PHLaD3GbECJ5g+jovq3lHbRtbif HxA3jCNzJhFW61NcovtFIikKcyTivRo01KGJooCJ4uL/8sY56qft/n3wde6mshg5eY kCjM/NlFnC4dA== Received: from rostedt by gandalf with local (Exim 4.100.1) (envelope-from ) id 1xHLat-00000000MdI-2Ky1; Thu, 15 Oct 2026 09:34:03 -0400 Message-ID: <20261015133403.364511757@kernel.org> User-Agent: quilt/0.69 Date: Thu, 15 Oct 2026 09:33:17 -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 07/16] tracing: Fix simple_ring_buffer undef check on parisc 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 simple_ring_buffer uses local_set() and cmpxchg() on unsigned long. Add them to undefsyms_base.c to extend the allowlist for the parisc architecture. Link: https://patch.msgid.link/20260923074213.3077182-3-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/undefsyms_base.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/trace/undefsyms_base.c b/kernel/trace/undefsyms_base.c index e65baf58e6ff..37310baf706b 100644 --- a/kernel/trace/undefsyms_base.c +++ b/kernel/trace/undefsyms_base.c @@ -9,6 +9,7 @@ #include #include +#include #include void undefsyms_base(void *p, int n); @@ -18,11 +19,13 @@ static char page[PAGE_SIZE] __aligned(PAGE_SIZE); void undefsyms_base(void *p, int n) { char buffer[256] = { 0 }; - u32 u = 0; + memset((char * volatile)page, 8, PAGE_SIZE); memset((char * volatile)buffer, 8, sizeof(buffer)); memcpy((void * volatile)p, buffer, sizeof(buffer)); cmpxchg((u32 * volatile)&u, 0, 8); + cmpxchg((unsigned long *)p, 0, 8); + local_set((local_t *)p, 8); WARN_ON(n == 0xdeadbeef); } -- 2.53.0