From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id 81DC96B0003 for ; Mon, 18 Jun 2018 19:25:48 -0400 (EDT) Received: by mail-pf0-f197.google.com with SMTP id d64-v6so9310173pfd.13 for ; Mon, 18 Jun 2018 16:25:48 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id x2-v6si16171660plr.223.2018.06.18.16.25.47 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Jun 2018 16:25:47 -0700 (PDT) Date: Mon, 18 Jun 2018 16:25:45 -0700 From: Andrew Morton Subject: Re: [Bug 200095] New: kasan: GPF could be caused by NULL-ptr deref or user memory access Message-Id: <20180618162545.521b8da29637cf7ec7608fa6@linux-foundation.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: bugzilla-daemon@bugzilla.kernel.org, icytxw@gmail.com, Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). Could the KASAN people please help interpret this one? On Sun, 17 Jun 2018 03:10:59 +0000 bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=200095 > > Bug ID: 200095 > Summary: kasan: GPF could be caused by NULL-ptr deref or user > memory access > Product: Alternate Trees > Version: 2.5 > Kernel Version: v4.17 > Hardware: All > OS: Linux > Status: NEW > Severity: normal > Priority: P1 > Component: mm > Assignee: akpm@linux-foundation.org > Reporter: icytxw@gmail.com > Regression: No > > Created attachment 276605 > --> https://bugzilla.kernel.org/attachment.cgi?id=276605&action=edit > log0 > > $ cat ../949034f0ecf05fba42df7e5f51a55453eba53e06/report0 > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: 0000 [#1] SMP KASAN PTI > CPU: 0 PID: 7388 Comm: syz-executor1 Not tainted 4.17.0 #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org 04/01/2014 > RIP: 0010:__insert_vmap_area+0x8c/0x3c0 mm/vmalloc.c:373 > Code: 76 e8 78 3f e5 ff 4c 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 c7 02 00 00 4c > 8d 6b e8 4d 8b 3c 24 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 a0 02 > 00 00 4c 3b 7b f0 72 9d e8 3f 3f e5 ff 41 > RSP: 0018:ffff8800550778c0 EFLAGS: 00010207 > RAX: 1ffff1000d80fd40 RBX: 0000041600000406 RCX: ffffffff8324e1de > RDX: 00000082c000007e RSI: ffffffff814d6dd8 RDI: 00000416000003f6 > RBP: dffffc0000000000 R08: 1ffffffff08cf184 R09: fffffbfff08cf184 > R10: 0000000000000001 R11: fffffbfff08cf184 R12: ffff88006c07ea00 > R13: 00000416000003ee R14: ffffed000d80fd41 R15: ffffc90000712000 > FS: 0000000002619940(0000) GS:ffff88006d400000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000002622978 CR3: 0000000055078000 CR4: 00000000000006f0 > DR0: 0000000020000ac0 DR1: 0000000020000ac0 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 > Call Trace: > Modules linked in: > Dumping ftrace buffer: > (ftrace buffer empty) > ---[ end trace 650893cd43a30701 ]--- > RIP: 0010:__insert_vmap_area+0x8c/0x3c0 mm/vmalloc.c:373 > Code: 76 e8 78 3f e5 ff 4c 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 c7 02 00 00 4c > 8d 6b e8 4d 8b 3c 24 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 a0 02 > 00 00 4c 3b 7b f0 72 9d e8 3f 3f e5 ff 41 > RSP: 0018:ffff8800550778c0 EFLAGS: 00010207 > RAX: 1ffff1000d80fd40 RBX: 0000041600000406 RCX: ffffffff8324e1de > RDX: 00000082c000007e RSI: ffffffff814d6dd8 RDI: 00000416000003f6 > RBP: dffffc0000000000 R08: 1ffffffff08cf184 R09: fffffbfff08cf184 > R10: 0000000000000001 R11: fffffbfff08cf184 R12: ffff88006c07ea00 > R13: 00000416000003ee R14: ffffed000d80fd41 R15: ffffc90000712000 > FS: 0000000002619940(0000) GS:ffff88006d400000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000002622978 CR3: 0000000055078000 CR4: 00000000000006f0 > DR0: 0000000020000ac0 DR1: 0000000020000ac0 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 > > -- > You are receiving this mail because: > You are the assignee for the bug.