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 C8EC0394470; Sat, 17 Oct 2026 16:46:17 +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=1792255578; cv=none; b=F1V6XBhM18/QWRG/ZLE3ln9pV0oZwSGa6Pod2JYngEC1levY3WzQY8FIhzkOyYbZL7O2+9pjA4ZYeQ85THCeFqvI/dr3mb060NdKkqnE/hWJ1003v/tALigrIGTIRigQr2EmTS2B12NKr3THZBwog42XhnL8aTVVoWU+lotltEI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792255578; c=relaxed/simple; bh=F5gnLQLjeZgPLMnXNWyidRnNSCJ4qCfCX25Qchs2JIU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KYfK7DbTchMpxgl1d3D32hFSulCq2RvhnAEO0v7THVAoPKkZi9/eqi8LxCF6+Zq7nc1aU2joc6klJHIgcSKTQ93s3XixUTbypyxWOelcqdM69bCsUmGFiCBqnen925rdwibLqgd7856lZFfgW5ATTdnEyIi9ui360msJlvePVEg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FkGTTdnL; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="FkGTTdnL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B5AF1F000C4; Sat, 17 Oct 2026 16:46:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792255577; bh=oTX3gUcphNM/odScRLMwGA3SrlSlO/aOH8lxa2u0EIU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=FkGTTdnLJkPE/xrC4yQJ+ekQMSBX9ZBdRNpalM0oGwo0r3poTKFgY+MbWa7iLzdUm Z9KAM9LG+Ckhl5b7DA8oqkI/MjACsKLw4DDAoR2hC49YNk+afwgpZcf9VyxeegIMwc OhuF9k919RdwBuz5VOQDdbG9zEd7yCB7ue4u0MEs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Janosch Frank , Claudio Imbrenda , Heiko Carstens , Sasha Levin Subject: [PATCH 6.12 821/869] s390/kvm: Initialize uninitialized flags variable Date: Sat, 17 Oct 2026 18:01:02 +0200 Message-ID: <20261017160057.935324728@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160036.979869304@linuxfoundation.org> References: <20261017160036.979869304@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Claudio Imbrenda [ Upstream commit 64844729a608d308089510fc3bb23abf602f4e47 ] The flags variable was being used uninitialized. Initialize it to 0 as expected. For some reason neither gcc nor clang reported a warning. Fixes: 05066cafa925 ("s390/mm/fault: Handle guest-related program interrupts in KVM") Reported-by: Janosch Frank Signed-off-by: Claudio Imbrenda Link: https://lore.kernel.org/r/20241030161906.85476-1-imbrenda@linux.ibm.com Signed-off-by: Heiko Carstens Stable-dep-of: 5f9df945d4e8 ("KVM: s390: Fix FOLL_*/FAULT_FLAG_* confusion") Signed-off-by: Sasha Levin --- arch/s390/kvm/kvm-s390.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 885eedfc0af63..768d3a6f69597 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4737,8 +4737,8 @@ static int vcpu_post_run_addressing_exception(struct kvm_vcpu *vcpu) static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu) { + unsigned int flags = 0; unsigned long gaddr; - unsigned int flags; int rc = 0; gaddr = current->thread.gmap_teid.addr * PAGE_SIZE; -- 2.53.0