From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C1F9144D21 for ; Sun, 22 Dec 2024 19:13:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734894808; cv=none; b=m0qoLxETXpHIX3HeiaQzS+fHvUO7/T3X6w3dOltqpe3tdSRX3GxXgdsTkxoRX9L+ruedu1QHGMsd+1GTI1nQV3anFvLDZuA752p8NBrYt7nYv4CYj/M+mqvzU2g10501kwxJuBNvq6WyNnuxN10gGY05O+34LIWTDsz6alBIDi8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734894808; c=relaxed/simple; bh=MKebfIMREqyFESZCiW4Dy7Da11pjUwNwJPHOTFS44Cg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=kzbVhsQqX4LDRIyGcFcosZOEPxpIbnBmr2XdeKf9GvGzceS40BGdXgB8NefjxXDGqpptXlnXuzCZFEv5nj9MmxR+lfUOM+cZtfxfgjzcMiZXlM1+6kpRIufmr4SUCfdtzY3ddix6mk97hCT+gChnAcncevs90GAJD66YaP9wFbQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.207 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f207.google.com with SMTP id e9e14a558f8ab-3a81684bac0so70072245ab.0 for ; Sun, 22 Dec 2024 11:13:25 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734894805; x=1735499605; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=XUnHXLellpxXfJVJ34ASXd3kwMDn7EDnrcdkuZlh+9E=; b=RiBT1BDE9KuQ+Snft62ekpuT5i9zC8eVAmqVvC8sTUDlgFw0sEzMnxPcI68a0HshFv i028t1Nh+A6NGe/15Mv/aJwIlPd+z0ykG8nRa2LYK4AJzCsJ9iilJ1qLPoud0qlXL8xU nBxd/i7kFiEUDWw83kD19cK9Z72HZM8zfRGnkcYShTwZ05fazOOWB8TnEoXxrP6bqynj IHdTUdHir3u5zm+Idht+661KLY83kutuop6lflkpmXseEUoMV9hdFEIJOiB1i0368TNI AG1MJd8ZPFBHaiUhYj7dHBC6v17Wp+OxZbeaheQsEdJL9p2TGDFGXsY7dmsncHBUsngG 3Pfw== X-Forwarded-Encrypted: i=1; AJvYcCXQQ9sG/QiPHwJDx8FeAjuLXIrArbqWJODlMQDV1mm1aI0lZt+SzDWZW3LP3trrWYOy9aVAsKIzC5oobNM=@vger.kernel.org X-Gm-Message-State: AOJu0YxJOsZKfUX1IBh9ndQXmuswD6LaROo63z0JUVLjPqs/0xM+7RSB 9eFgKIA9JVEfffhdgFK1a+Q94v+BzZoNCkq9s326rmjKGNpd9NGYmtWmGVmpcqB9hxHxlAvQeTA P8tLkjjrUAnLyEyCe9BUxrq/viGvcvRUCvjUIfzN0D2NpZZ8SqkCjJ8w= X-Google-Smtp-Source: AGHT+IHfYjtBAla6Dju0icxhJIz0UtiUbY8FgcltfTwTZ4qfzNIOkNHMtk0tklVq8RPqK564er2nxZ1fHKxNEz2ipBYlJ+sJO+P7 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:b710:0:b0:3a7:e732:471b with SMTP id e9e14a558f8ab-3c4fd09b311mr47879635ab.11.1734894805111; Sun, 22 Dec 2024 11:13:25 -0800 (PST) Date: Sun, 22 Dec 2024 11:13:25 -0800 In-Reply-To: <674f4e7d.050a0220.17bd51.004f.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <676864d5.050a0220.226966.002c.GAE@google.com> Subject: Re: [syzbot] [f2fs?] UBSAN: array-index-out-of-bounds in read_inline_xattr From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: bcde95ce32b6 Merge tag 'devicetree-fixes-for-6.13-1' of gi.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=116c0adf980000 kernel config: https://syzkaller.appspot.com/x/.config?x=1234f097ee657d8b dashboard link: https://syzkaller.appspot.com/bug?extid=69f5379a1717a0b982a1 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=167f9f30580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=142d7cf8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/be6d4de70f82/disk-bcde95ce.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/70993500a1e4/vmlinux-bcde95ce.xz kernel image: https://storage.googleapis.com/syzbot-assets/1018443184c5/bzImage-bcde95ce.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/7e1b134be79c/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+69f5379a1717a0b982a1@syzkaller.appspotmail.com F2FS-fs (loop0): Failed to enable quota tracking (type=1, err=-22). Please run fsck to fix. F2FS-fs (loop0): Cannot turn on quotas: error -22 F2FS-fs (loop0): Mounted with checkpoint version = 1b41e954 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/f2fs/f2fs.h:3292:19 index 18446744073709500059 is out of range for type '__le32[923]' (aka 'unsigned int[923]') CPU: 0 UID: 0 PID: 5820 Comm: syz-executor178 Not tainted 6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429 read_inline_xattr+0x273/0x280 lookup_all_xattrs fs/f2fs/xattr.c:341 [inline] f2fs_getxattr+0x57b/0x13b0 fs/f2fs/xattr.c:533 __vfs_getxattr+0x433/0x470 fs/xattr.c:423 smk_fetch+0xb1/0x140 security/smack/smack_lsm.c:306 smack_d_instantiate+0x749/0xa50 security/smack/smack_lsm.c:3615 security_d_instantiate+0x107/0x1f0 security/security.c:4070 d_splice_alias+0x6f/0x330 fs/dcache.c:3001 f2fs_lookup+0x4ff/0x820 fs/f2fs/namei.c:523 lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1692 filename_create+0x297/0x540 fs/namei.c:4081 do_mkdirat+0xbd/0x3a0 fs/namei.c:4326 __do_sys_mkdir fs/namei.c:4354 [inline] __se_sys_mkdir fs/namei.c:4352 [inline] __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4352 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5566117ad7 Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 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:00007fff7eab6a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5566117ad7 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000180 RBP: 0000000020000180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7eab6af0 R14: 0000000000000000 R15: 0000000000000000 ---[ end trace ]--- --- 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.