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 E62CCC43334 for ; Sun, 12 Jun 2022 18:44:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230245AbiFLSor (ORCPT ); Sun, 12 Jun 2022 14:44:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232869AbiFLSo3 (ORCPT ); Sun, 12 Jun 2022 14:44:29 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F36C5C84D for ; Sun, 12 Jun 2022 11:44:28 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 15B8EB80CFF for ; Sun, 12 Jun 2022 18:44:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id BB87CC341D0 for ; Sun, 12 Jun 2022 18:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655059465; bh=kq+ZTyr/+EZan0OI+B+Gn9OC8Gt6qgB27u/iPvHpj0s=; h=From:To:Subject:Date:In-Reply-To:References:From; b=mCXkkt9LcVdRIqRex5AMm1eDLkSCUAZHsvvcT49g0xaHUNc/wOVcdK49keWpanGXj Pr4PaJ6AYw8lEqvVPq8e7ZnQ8y9hcBdJ7lNRuc3ADW/NyIJZ+WonTHrYgNRgMKP81W fKwtV1JemCqIiK7l5w2hZqInAVyFZgy0kaxVb4sgWrX+vmzeAKPeiCMokINmtYuwzU zpRGn1J4mKtGoQxXL/ZpgzLqhwDyGn2jjKe7F+WDqKlA8Tl976MZskwKtBcbhOU9V4 iSG+I2EorIua9roJa/Ux7f6PxSIiWD3/7GocBCzCEIgxPCRyuOOy0MAolgtl87YbQQ fPxhOilxxr8Lw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id ACA02CC13B6; Sun, 12 Jun 2022 18:44:25 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-xfs@vger.kernel.org Subject: [Bug 216073] [s390x] kernel BUG at mm/usercopy.c:101! usercopy: Kernel memory exposure attempt detected from vmalloc 'n o area' (offset 0, size 1)! Date: Sun, 12 Jun 2022 18:44:25 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: CC filesystem_xfs@kernel-bugs.kernel.org X-Bugzilla-Product: Memory Management X-Bugzilla-Component: Other X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: yuzhao@google.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: akpm@linux-foundation.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D216073 --- Comment #16 from yuzhao@google.com --- On Sun, Jun 12, 2022 at 12:05 PM Matthew Wilcox wrote: > > On Sun, Jun 12, 2022 at 11:59:58AM -0600, Yu Zhao wrote: > > Please let me know if there is something we want to test -- I can > > reproduce the problem reliably: > > > > ------------[ cut here ]------------ > > kernel BUG at mm/usercopy.c:101! > > The line right before cut here would have been nice ;-) Right. $ grep usercopy: usercopy: Kernel memory exposure attempt detected from vmalloc (offset 2882303761517129920, size 11)! usercopy: Kernel memory exposure attempt detected from vmalloc (offset 8574853690513436864, size 11)! usercopy: Kernel memory exposure attempt detected from vmalloc (offset 7998392938210013376, size 11)! ... > https://lore.kernel.org/linux-mm/YqXU+oU7wayOcmCe@casper.infradead.org/ > > might fix your problem, but I can't be sure without that line. Thanks, it worked! --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching someone on the CC list of the bug.=