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 4A3DAC433EF for ; Sun, 12 Jun 2022 18:05:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230357AbiFLSFy (ORCPT ); Sun, 12 Jun 2022 14:05:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229554AbiFLSFx (ORCPT ); Sun, 12 Jun 2022 14:05:53 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C55B7275EC for ; Sun, 12 Jun 2022 11:05:52 -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 7056EB80CAC for ; Sun, 12 Jun 2022 18:05:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 359F9C341CC for ; Sun, 12 Jun 2022 18:05:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655057150; bh=ebZ8zPWJ0JzLRKICsghlFRG3YhJnIowOr4LR3Tm8Suk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=cloWxDMEZz0Q2iIiv50Vih+DGZ6Wor/EJhOyltBBTLzaYr5R71v+GiODgbuBHg/fj 3iXMaf5v4qAPxNPWz3kJSqYgjkl6YfvUrgW3UqEgLh/QIUeJrYMjDGIgsZvrIMSgC1 diAtZa7SrfxptbBteD78xMz02iU1VGbTSagRx9j5nIeFGkbG0ipY1nMAwFQpH4Gtuc uUuXQRz/RKYJoqHjYm7jSIakWUs73m4V3RJi3/G3JfPeT3DKO9aewrY0d57llgJbLH EtKkjDeCL//7QQEaTlM6Y5nZh1W3wcyxrJUsQ7rk3GXSqCzhVBWWZUa9nR5WQDTdw6 DMd/cqD+JBtLA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 25599CC13B4; Sun, 12 Jun 2022 18:05:50 +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 18:05:49 +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: willy@infradead.org 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 #15 from willy@infradead.org --- 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: >=20 > ------------[ cut here ]------------ > kernel BUG at mm/usercopy.c:101! The line right before cut here would have been nice ;-) https://lore.kernel.org/linux-mm/YqXU+oU7wayOcmCe@casper.infradead.org/ might fix your problem, but I can't be sure without that line. > Internal error: Oops - BUG: 0 [#1] PREEMPT SMP > CPU: 4 PID: 3259 Comm: iptables Not tainted 5.19.0-rc1-lockdep+ #1 > pc : usercopy_abort+0x9c/0xa0 > lr : usercopy_abort+0x9c/0xa0 > sp : ffffffc010bd78d0 > x29: ffffffc010bd78e0 x28: 42ffff80ac08d8ec x27: 42ffff80ac08d8ec > x26: 42ffff80ac08d8c0 x25: 000000000000000a x24: ffffffdf4c7e5120 > x23: 000000000bec44c2 x22: efffffc000000000 x21: ffffffdf2896b0c0 > x20: 0000000000000001 x19: 000000000000000b x18: 0000000000000000 > x17: 2820636f6c6c616d x16: 0000000000000042 x15: 6574636574656420 > x14: 74706d6574746120 x13: 0000000000000018 x12: 000000000000000d > x11: ff80007fffffffff x10: 0000000000000001 x9 : db174b7f89103400 > x8 : db174b7f89103400 x7 : 0000000000000000 x6 : 79706f6372657375 > x5 : ffffffdf4d9c617e x4 : 0000000000000000 x3 : ffffffdf4b7d017c > x2 : ffffff80eb188b18 x1 : 42ffff80ac08d8c8 x0 : 0000000000000066 > Call trace: > usercopy_abort+0x9c/0xa0 > __check_object_size+0x38c/0x400 > xt_obj_to_user+0xe4/0x200 > xt_compat_target_to_user+0xd8/0x18c > compat_copy_entries_to_user+0x278/0x424 > do_ipt_get_ctl+0x7bc/0xb2c > nf_getsockopt+0x7c/0xb4 > ip_getsockopt+0xee8/0xfa4 > raw_getsockopt+0xf4/0x23c > sock_common_getsockopt+0x48/0x54 > __sys_getsockopt+0x11c/0x2f8 > __arm64_sys_getsockopt+0x60/0x70 > el0_svc_common+0xfc/0x1cc > do_el0_svc_compat+0x38/0x5c > el0_svc_compat+0x68/0xf4 > el0t_32_sync_handler+0xc0/0xf0 > el0t_32_sync+0x190/0x194 > Code: aa0903e4 a9017bfd 910043fd 9438be18 (d4210000) > ---[ end trace 0000000000000000 ]--- --=20 You may reply to this email to add a comment. 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