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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E62C2C433E9 for ; Thu, 3 Sep 2020 19:09:25 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8B25620C09 for ; Thu, 3 Sep 2020 19:09:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B25620C09 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B02E66B005A; Thu, 3 Sep 2020 15:09:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AB30E6B0072; Thu, 3 Sep 2020 15:09:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9C9016B0074; Thu, 3 Sep 2020 15:09:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0208.hostedemail.com [216.40.44.208]) by kanga.kvack.org (Postfix) with ESMTP id 82A8C6B005A for ; Thu, 3 Sep 2020 15:09:24 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 42EEB824556B for ; Thu, 3 Sep 2020 19:09:24 +0000 (UTC) X-FDA: 77222688648.15.salt02_470f785270ac Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id ED47F1814B0C7 for ; Thu, 3 Sep 2020 19:09:23 +0000 (UTC) X-HE-Tag: salt02_470f785270ac X-Filterd-Recvd-Size: 6283 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by imf34.hostedemail.com (Postfix) with ESMTP for ; Thu, 3 Sep 2020 19:09:23 +0000 (UTC) Received: by mail-il1-f200.google.com with SMTP id m10so3074200ild.5 for ; Thu, 03 Sep 2020 12:09:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=uBpBVzNEbGOirS4mN6gzFgGQyv3QijJgsotogQt7CMY=; b=e/FC8Tl4c9qMJ/sIBiH8RKDSH+muXaWt0Ksjfc+0MkRrHvwBACIUa+tkE/QK5ssnv1 iuXQTrlaNQnQgmfVPzeLUFLY4Lxg38M5Zldw9WUTEofqlnN0hfkiU36GlJnNpJl5d7f9 73KKcxHHYHOqnjGMo6y+sAcB1xEtS9ZgNh7+vPD0pJYVFUHPEq6AS/qoTNzoDmAAYM4l joA7KXD7DlFs/gmXq4/yeZ1qJwU23lqI6OPPNTSE2bguq5F52zpf+m+7+lltbL19uAFU HMHX4w3kvcdH23vlBgKsobm75lBmI5K47vnqozJcSfLhuItl9461T4hUhLonQg6PyPI5 VWTw== X-Gm-Message-State: AOAM533+G2cBwS5KBd3kCuv+11Td9kaDmrFR5k2ZoeAD+F+9TVCJwaJ3 0fgL3UeoXRMyEnbtxwjPobvIefjikX2jtuuF3EI8k7YKmZPy X-Google-Smtp-Source: ABdhPJwebxKrtAoIt0X2/l6P1mBqaKwli0ZcJtLMZ+adp72mZiHonV3mZ+GimBk+dQhl+X8gIB1H8RrEil7X6B61mzVeL2419bcS MIME-Version: 1.0 X-Received: by 2002:a05:6602:168a:: with SMTP id s10mr2096516iow.46.1599160163022; Thu, 03 Sep 2020 12:09:23 -0700 (PDT) Date: Thu, 03 Sep 2020 12:09:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000074bbdd05ae6d7d35@google.com> Subject: kernel BUG at mm/mmap.c:LINE! From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: ED47F1814B0C7 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.447839, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following issue on: HEAD commit: 1127b219 Merge tag 'fallthrough-fixes-5.9-rc3' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=136d098e900000 kernel config: https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994 dashboard link: https://syzkaller.appspot.com/bug?extid=721b657f8f01708b291b compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+721b657f8f01708b291b@syzkaller.appspotmail.com start_brk 558decf56000 brk 558ded160000 start_stack 7ffd20847a70 arg_start 7ffd20847e89 arg_end 7ffd20847ea4 env_start 7ffd20847ea4 env_end 7ffd20847fdd binfmt ffffffff89cdcb60 flags 200cd core_state 0000000000000000 ioctx_table 0000000000000000 ------------[ cut here ]------------ kernel BUG at mm/mmap.c:427! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 28867 Comm: systemd-udevd Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:validate_mm+0x617/0x800 mm/mmap.c:427 Code: cf f5 cd ff 44 89 e6 bf ff ff ff ff e8 42 f2 cd ff 41 83 fc ff 0f 85 86 1b 01 00 e8 b3 f5 cd ff 48 8b 7c 24 18 e8 d9 59 fc ff <0f> 0b e8 a2 f5 cd ff 48 8b 54 24 28 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc90015d6fd98 EFLAGS: 00010286 RAX: 000000000000038d RBX: 000000000000004f RCX: 0000000000000000 RDX: ffff8880475ac380 RSI: ffffffff815dafc7 RDI: fffff52002badf52 RBP: 0000000000000000 R08: 000000000000038d R09: ffff8880ae6318e7 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb1b935a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd20959990 CR3: 0000000217691000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: remove_vma_list mm/mmap.c:2616 [inline] __do_munmap+0x899/0x1170 mm/mmap.c:2869 __vm_munmap+0xe6/0x180 mm/mmap.c:2889 __do_sys_munmap mm/mmap.c:2915 [inline] __se_sys_munmap mm/mmap.c:2911 [inline] __x64_sys_munmap+0x62/0x80 mm/mmap.c:2911 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb1b81d66e7 Code: c7 c0 ff ff ff ff eb 8d 48 8b 15 ac 47 2b 00 f7 d8 64 89 02 e9 5b ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 47 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffd20846cd8 EFLAGS: 00000206 ORIG_RAX: 000000000000000b RAX: ffffffffffffffda RBX: 0000558decf56100 RCX: 00007fb1b81d66e7 RDX: 0000000000000080 RSI: 000000000080ccec RDI: 00007fb1b7064000 RBP: 0000558debda4d18 R08: 0000558decf6a3c0 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000206 R12: 0000558decf560e0 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e Modules linked in: ---[ end trace 76a00ebdfa09cc52 ]--- RIP: 0010:validate_mm+0x617/0x800 mm/mmap.c:427 Code: cf f5 cd ff 44 89 e6 bf ff ff ff ff e8 42 f2 cd ff 41 83 fc ff 0f 85 86 1b 01 00 e8 b3 f5 cd ff 48 8b 7c 24 18 e8 d9 59 fc ff <0f> 0b e8 a2 f5 cd ff 48 8b 54 24 28 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc90015d6fd98 EFLAGS: 00010286 RAX: 000000000000038d RBX: 000000000000004f RCX: 0000000000000000 RDX: ffff8880475ac380 RSI: ffffffff815dafc7 RDI: fffff52002badf52 RBP: 0000000000000000 R08: 000000000000038d R09: ffff8880ae6318e7 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb1b935a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fad09fed000 CR3: 0000000217691000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.