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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E90DC67861 for ; Fri, 5 Apr 2024 17:40:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C771B6B0099; Fri, 5 Apr 2024 13:40:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C26D26B009A; Fri, 5 Apr 2024 13:40:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B15CA6B009B; Fri, 5 Apr 2024 13:40:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 9472E6B0099 for ; Fri, 5 Apr 2024 13:40:34 -0400 (EDT) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 12F5F16120D for ; Fri, 5 Apr 2024 17:40:34 +0000 (UTC) X-FDA: 81976192788.10.E0572C4 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by imf08.hostedemail.com (Postfix) with ESMTP id 5A3C9160009 for ; Fri, 5 Apr 2024 17:40:31 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none); spf=pass (imf08.hostedemail.com: domain of 3jjcQZgkbAHUlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.69 as permitted sender) smtp.mailfrom=3jjcQZgkbAHUlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1712338831; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=ah/hZ2yJ0TwcfFp3XWyXAJ/KFmBkEoLcHbO6pknimo8=; b=yJOH6zgvjGSuGQ8/SDAWIbu9DPCeSEzvISv6kbj0sWfEClRarBEZ1hC9XnKYOt23wYrSll I9XPjkLEZMsQ0YykacD46pjILWndGPMEP02R9zPuw7m1wpR5k8zTLMZPVimaNNAGJhe814 t91MNu9sUdOG60LOUUYqKTyxUgkcJl8= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none); spf=pass (imf08.hostedemail.com: domain of 3jjcQZgkbAHUlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.69 as permitted sender) smtp.mailfrom=3jjcQZgkbAHUlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1712338831; a=rsa-sha256; cv=none; b=nks7Y4+Qh2DTfbVor3uG75nekO2VJg7/ewhz/dVn6cqTT7kntXals3cclgzacHbxQYBAwp U0MJEidzl/H0xbynLWtByb2j4VqCaC9PjDoRf+3x7r58p/MWn4AUtOlnAggwWVVmoHPiiW MisLJNKIa0EfK5k7PmvA8ybH/ICSZgQ= Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-7cbf0ebfda8so239518739f.0 for ; Fri, 05 Apr 2024 10:40:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712338830; x=1712943630; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ah/hZ2yJ0TwcfFp3XWyXAJ/KFmBkEoLcHbO6pknimo8=; b=Bls0bWT/6gfNi3iDy+xlNXGjjMiYDeRcyuJDV3jHMsbDAGiC8flXu3FF2HqcZOCoBy ILMSJzZoOLbBFokNyXiBp4P6TDOAeNsJTOhtPCU94CqYYsHuZdIV4YAtuWL0/KVDu7h8 +cBqGORQ4Q1UNgIMcMlNdtE20Llwttx3t3Jh3wtFneTKDRCrf/kZSoJPHQ1TaYjKsFd/ hbjYx0ovNkCo9kT1Bs1l5uKKecKsLCUbrvb3lUtYpCDtPQQYZmUCjkwbLLrWwZ8DTVxs DEDf8yL0Oiis30khVehXKeSk49hxZhLMQL50AbiQO7cXS5/7DIC/Xht+7/lvVQQOKqvv VcBg== X-Forwarded-Encrypted: i=1; AJvYcCWe6zEOzZ1qisknxP2R3h3Uk/pxaAmlzIsFew3TbKfSFUPS9LjPgI2ajdT7Cni3aqFS3LFR/74lPRpufUDVPWHlwFM= X-Gm-Message-State: AOJu0Yw7ctcUu9QbzVV5fQWxA1gk7bTyGCGaAlSszbS/oa8qlIfCh5qu txafARVTDhSEk6dT6qX1DLgFIGjS1ngMIgXBTMqytbSwIrIUcBmPnNkmPoyMzPH6GbBJKbrGFYa uCdLu2Y0XeDDXW2gLGfaJQWb8ST07OJ0uRQoisSWKNypo8r4LCcggL38= X-Google-Smtp-Source: AGHT+IEa8ErI5FgU8ll+UtLrtt9fRtswGqcbjZC30844W8V4aUKoP5b0lwmlVyIv3bBsaEffu2BV5Iwtgb/xfl7/x8BopX03/sjL MIME-Version: 1.0 X-Received: by 2002:a05:6e02:156f:b0:369:ac5f:9a10 with SMTP id k15-20020a056e02156f00b00369ac5f9a10mr142998ilu.1.1712338830394; Fri, 05 Apr 2024 10:40:30 -0700 (PDT) Date: Fri, 05 Apr 2024 10:40:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b8974d06155cf3a2@google.com> Subject: [syzbot] [mm?] [hardening?] BUG: bad usercopy in do_handle_open From: syzbot To: akpm@linux-foundation.org, gustavoars@kernel.org, keescook@chromium.org, linux-hardening@vger.kernel.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: 5A3C9160009 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: 8fggkcs6hiqdxsnjrs4iozbhmecsqujt X-HE-Tag: 1712338831-832485 X-HE-Meta: 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 AhuBrdsB 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 HqjaBSUB 5vQm39fwMtWbzXzvmTzBrGl+OS5BYTcgkkZsy1zEkRkN6wWszN4w2VqQMRbgX1+DcWwjDhTJLbniHaSp/RwANE2i4YsoVVN46J50ci30oYvIoCLp9nb0dghYKZE8xD+z7baBuHbhkYn5lgQW00vLNIyHurdfHGa931Oe+2sL8e2D1Qs8kWNpB/euUjvMq3EPsxgTjqcqbeVDMFbre8zgsGOMMqQUdLjTXNYXn/HZWAe+V8gAsd8nkKweMrboTpBEDOpmk8+U2LeDPRdK+n5pU2atMXwmyKpZDGwZ8eXjbgEyPn/YvCN3A2JFvx99ii/Xl9nPMAWwaRHiNhZP+6xDHM3jeEjql3L0VyygSXnYEsw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: c0b832517f62 Add linux-next specific files for 20240402 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=13a5c3b1180000 kernel config: https://syzkaller.appspot.com/x/.config?x=afcaf46d374cec8c dashboard link: https://syzkaller.appspot.com/bug?extid=4372e026c95b0e36d0ee compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ed9d29180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161ab3c6180000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0d36ec76edc7/disk-c0b83251.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6f9bb4e37dd0/vmlinux-c0b83251.xz kernel image: https://storage.googleapis.com/syzbot-assets/2349287b14b7/bzImage-c0b83251.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4372e026c95b0e36d0ee@syzkaller.appspotmail.com usercopy: Kernel memory overwrite attempt detected to SLUB object 'kmalloc-16' (offset 8, size 9)! ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:102! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 5081 Comm: syz-executor249 Not tainted 6.9.0-rc2-next-20240402-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:usercopy_abort+0x84/0x90 mm/usercopy.c:102 Code: 49 89 ce 48 c7 c3 e0 27 d8 8b 48 0f 44 de 48 c7 c7 80 26 d8 8b 4c 89 de 48 89 c1 41 52 41 56 53 e8 b1 6f 75 09 48 83 c4 18 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003dbfd78 EFLAGS: 00010286 RAX: 0000000000000062 RBX: ffffffff8bd827e0 RCX: 2b2ecef8eabe4800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000008 R08: ffffffff81760b9c R09: 1ffff920007b7f4c R10: dffffc0000000000 R11: fffff520007b7f4d R12: ffffea00008fe840 R13: 0000000000000009 R14: 0000000000000008 R15: 0000000000000009 FS: 000055556aa78380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000076e74000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __check_heap_object+0xb1/0x100 mm/slub.c:5461 check_heap_object mm/usercopy.c:196 [inline] __check_object_size+0x1e3/0x900 mm/usercopy.c:251 check_object_size include/linux/thread_info.h:215 [inline] check_copy_size include/linux/thread_info.h:251 [inline] copy_from_user include/linux/uaccess.h:182 [inline] handle_to_path fs/fhandle.c:203 [inline] do_handle_open+0x1f6/0x660 fs/fhandle.c:226 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a RIP: 0033:0x7f27665352a9 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe7e4589d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 RAX: ffffffffffffffda RBX: 00007ffe7e458bb8 RCX: 00007f27665352a9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 00000000ffffffff RBP: 00007f27665a8610 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe7e458ba8 R14: 0000000000000001 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:usercopy_abort+0x84/0x90 mm/usercopy.c:102 Code: 49 89 ce 48 c7 c3 e0 27 d8 8b 48 0f 44 de 48 c7 c7 80 26 d8 8b 4c 89 de 48 89 c1 41 52 41 56 53 e8 b1 6f 75 09 48 83 c4 18 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003dbfd78 EFLAGS: 00010286 RAX: 0000000000000062 RBX: ffffffff8bd827e0 RCX: 2b2ecef8eabe4800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000008 R08: ffffffff81760b9c R09: 1ffff920007b7f4c R10: dffffc0000000000 R11: fffff520007b7f4d R12: ffffea00008fe840 R13: 0000000000000009 R14: 0000000000000008 R15: 0000000000000009 FS: 000055556aa78380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000076e74000 CR4: 00000000003506f0 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup