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=1792774524; b=LvQdocCTQGRZsGhg4HrAk+BwJ6NrPjdsDTUUyG27QYSdLUbBQQjehd1lrmInxcvrkq1c TdFhGHBxbaWRG5CF/dL/lwkCoN/utMARLaQRZHl38ANyqtaUHE/4i5cSwZpVC92tL8cN0 NeXOs9422zT4YGczkv7aPJKbFll0vCPwdojfUjs6yZjWmA1TDLr4gk+E95vhxGjySnSWg pUGbuJcJcOUNUGSuJdgoSdRu5WagP/eAwFcHe18nXuEhXcLZSwgVdTfCTtFbeW5srKEKj GA0ChdkICqAajGXfVsRmfUtY04GLsYFW0X3RIJn6OJHliThxy4Beh+PlPZKqrfHwl6g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774524; 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=Zr7R7bHws/nsta9kgDGBLBl3xfFPDa2kEJqFoeeJG9A=; b=NpmEyQ2ULqwRmOJyKnUxiSai5gPYpxfBqjaPmWFqSDzzFHCG0zd/+4r0MjkuD7MY9hur XPEJNifIkFQ49jnyFZOZCLudwteSqemVSr61MuT14c9kgt44Lsgx5jc1nLUv6P7UHHnJX Qngptj1paxQ18Mzk1H9c/r4v1KEvpfX5nCazJfiaSdlrnvE6XVQPSjC4IOmrx7MBMn7Ot ZgZpL2StiLvqQSyDRt5sEi9pwP+F/W1Ooq1kBPDX/SagRXJtqBIiQI5LcqfQ/UXkieWV+ IKIaVXBIOgEbehdwspO/LW5h+t25bRYe6DJlJWImmbR6ZSD5hVCiLPgAOlq+sGgp3Yw== 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=K+FJ6qt3; 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 B7352606A31A; Fri, 23 Oct 2026 16:55:23 +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=K+FJ6qt3 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 134231F01825; Fri, 23 Oct 2026 16:55:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774523; bh=Zr7R7bHws/nsta9kgDGBLBl3xfFPDa2kEJqFoeeJG9A=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=K+FJ6qt3/2eejRhLEL0foawdXAqyxuvkmV0/tftJcKy9Or5T7D4QidM9ngEjeBUjF lzc7+RWqLBWGa8ofB+Ktf7AYcGPBVkaz+GMiwu+6PdCbV/YvuLxiwmZVU7INZnW6IU kih/vNHtOCOodmtLtphmrBmWOI2ZFDwBcjkeUECo= 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 7.2 069/242] tracing: Fix simple_ring_buffer undef check on parisc Date: Fri, 23 Oct 2026 18:38:31 +0200 Message-ID: <20261023163715.414035832@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 ba875c4483359ad4c056e00d3da089c7db56bea6 ] 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 Signed-off-by: Sasha Levin --- 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 e65baf58e6ffc..37310baf706b0 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