From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BBCEC678DD for ; Thu, 19 Jan 2023 01:19:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229540AbjASBTC (ORCPT ); Wed, 18 Jan 2023 20:19:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229983AbjASBQ5 (ORCPT ); Wed, 18 Jan 2023 20:16:57 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 175186B9B1 for ; Wed, 18 Jan 2023 17:15:17 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A88C661B0E for ; Thu, 19 Jan 2023 01:15:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14455C433F1; Thu, 19 Jan 2023 01:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1674090916; bh=d1gt+nyAaX4cvFEvjCq3ut3YqTLeF9kOjt6H8Hj1LxM=; h=Date:To:From:Subject:From; b=iJWTXSXPnhLeZz8QELM9zhJBpcNA8hr/0MQJ0a6YteQYt7vP4AFxC6qVUEhV3sA1A E9DPc/T0CDJ1K5geMszkYoXkjEBaJapoVvjiSYiaCW/CkuPyoUVmjRpQoWEO7MWzFk +57DaLZb5J98yoZJw4L/GVAKaJpwmN6SHRmG2Hsg= Date: Wed, 18 Jan 2023 17:15:15 -0800 To: mm-commits@vger.kernel.org, willy@infradead.org, roman.gushchin@linux.dev, oleksiy.avramchenko@sony.com, npiggin@gmail.com, lstoakes@gmail.com, hch@lst.de, hch@infradead.org, bhe@redhat.com, urezki@gmail.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-vmalloc-replace-bug_on-by-warn_on_once.patch removed from -mm tree Message-Id: <20230119011516.14455C433F1@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: mm: vmalloc: replace BUG_ON() by WARN_ON_ONCE() has been removed from the -mm tree. Its filename was mm-vmalloc-replace-bug_on-by-warn_on_once.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: "Uladzislau Rezki (Sony)" Subject: mm: vmalloc: replace BUG_ON() by WARN_ON_ONCE() Date: Thu, 22 Dec 2022 20:00:22 +0100 Currently a vm_unmap_ram() functions triggers a BUG() if an area is not found. Replace it by the WARN_ON_ONCE() error message and keep machine alive instead of stopping it. The worst case is a memory leaking. Link: https://lkml.kernel.org/r/20221222190022.134380-3-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) Reviewed-by: Lorenzo Stoakes Reviewed-by: Christoph Hellwig Cc: Baoquan He Cc: Christoph Hellwig Cc: Christoph Hellwig Cc: Matthew Wilcox (Oracle) Cc: Nicholas Piggin Cc: Oleksiy Avramchenko Cc: Roman Gushchin Signed-off-by: Andrew Morton --- mm/vmalloc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/mm/vmalloc.c~mm-vmalloc-replace-bug_on-by-warn_on_once +++ a/mm/vmalloc.c @@ -2253,7 +2253,9 @@ void vm_unmap_ram(const void *mem, unsig } va = find_unlink_vmap_area(addr); - BUG_ON(!va); + if (WARN_ON_ONCE(!va)) + return; + debug_check_no_locks_freed((void *)va->va_start, (va->va_end - va->va_start)); free_unmap_vmap_area(va); _ Patches currently in -mm which might be from urezki@gmail.com are