From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 F1E262AE72 for ; Wed, 23 Jul 2025 04:34:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753245241; cv=none; b=qJs4GMxx/MqNUMMQHh+L5/+/h4R6ndQTlMBr4XaXg0IcKpy1cEKEx8X1k4yq8m3EmrVZiGucyJcfTlrxCqmfKFf/lcva08HOyQvd+bdOjVqKXYRbXO2nmmiTCoMHs13Oin6BiAvXW304J9ntZ5AMxG2LhOn1kT7WRKzC6sV2ZQ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753245241; c=relaxed/simple; bh=7OqRAmFVC+xx7UUGDh3wLQi94PsSSnx4iVsWhuOl7Yk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=Si5c0frsbIHm0XmAAYmX3hAweRJiCqN8SUxATZCi+vvGClc62sfv3Su/i853JdZFtzUSp/ibebor9WE1FIZjgBI26T44783VBrhxcmR2+HMYkt/3vn+upWIaALOaVC8vzc0FIIbvgr3dQ0XCZrUP5VwjUR9ZdTlctkAklAPyIis= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RPnVgbTs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RPnVgbTs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1702AC4CEE7; Wed, 23 Jul 2025 04:33:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753245240; bh=7OqRAmFVC+xx7UUGDh3wLQi94PsSSnx4iVsWhuOl7Yk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RPnVgbTsLrNmbWNYBc3GESsMwOUVyiDjyxBuZOQVlUApO9vSyrupLeUP60DojFvEA 6kHz0lzJhFv+x6SPI6xPawsSpBT60jaVU9YKiCCOrBsZokAn758SUmBSn7cWsW3Kyn EyvKDO9dn2ppgS22OxtKdXdqxozHjb81Xwic2h/SBXJU2prp1P4Z9xfXbYZ+gk5ydD 9aKekbyfsGgA3Ke/qIkMVTPrzfHKyfg9/pYillPs3CPI/qtO/+S+CMc4YGY2Sg7ryG ZbwAwHYm53lCv8xrLhnkg4gjizhvZQCgWB5N/vW+CsQ3hVqiYiEutsTLVJExDHlVXe FKynNj+4ktHQg== From: Sasha Levin To: stable@vger.kernel.org, siddhi.katage@oracle.com Cc: Sasha Levin Subject: Re: [PATCH 5.15.y 1/4] x86: Fix get_wchan() to support the ORC unwinder Date: Wed, 23 Jul 2025 00:33:58 -0400 Message-Id: <1753233242-65cf59f4@stable.kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250722062642.309842-2-siddhi.katage@oracle.com> References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Sasha's backport helper bot ] Hi, Summary of potential issues: ⚠️ Found follow-up fixes in mainline The upstream commit SHA1 provided is correct: bc9bbb81730ea667c31c5b284f95ee312bab466f WARNING: Author mismatch between patch and upstream commit: Backport author: Siddhi Katage Commit author: Qi Zheng Status in newer kernel trees: 6.15.y | Present (exact SHA1) 6.12.y | Present (exact SHA1) 6.6.y | Present (exact SHA1) 6.1.y | Present (exact SHA1) Found fixes commits: 5d1ceb3969b6 x86: Fix __get_wchan() for !STACKTRACE Note: The patch differs from the upstream commit: --- 1: bc9bbb81730e ! 1: 1f7a2f87bdde x86: Fix get_wchan() to support the ORC unwinder @@ Metadata ## Commit message ## x86: Fix get_wchan() to support the ORC unwinder + [ Upstream commit bc9bbb81730ea667c31c5b284f95ee312bab466f ] + Currently, the kernel CONFIG_UNWINDER_ORC option is enabled by default on x86, but the implementation of get_wchan() is still based on the frame pointer unwinder, so the /proc//wchan usually returned 0 regardless @@ Commit message Signed-off-by: Kees Cook Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20211008111626.271115116@infradead.org + Signed-off-by: Siddhi Katage ## arch/x86/kernel/process.c ## @@ arch/x86/kernel/process.c: unsigned long arch_randomize_brk(struct mm_struct *mm) --- Results of testing on various branches: | Branch | Patch Apply | Build Test | |---------------------------|-------------|------------| | 5.15 | Success | Success |