From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f205.google.com (mail-oi1-f205.google.com [209.85.167.205]) (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 8FA1D2EFD95 for ; Mon, 29 Jun 2026 19:21:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782760885; cv=none; b=Q1rbcHVTLe/6Zip2htMOUef2lGMtly3oEN+bsdixYNTJQi8WlwN1AA2E/4y1xDkqN87+Y5cFeXpXYvDqQwqTWA/yaCZU43THGpJhLSrvdM5+NUX1Z3S+0iAXA+0kwgWcyF+dBUGfSWROVOQzuYyaqm2auxwJV2hxBVT5IrN1YZ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782760885; c=relaxed/simple; bh=gObv1+N10UMNgGi0NRamTqbMClY79Ij7pPUvdET8ZYY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=g0/NDsJw0J8G7IFQpE2UoGY2yAuuIppoolgGhGL+yPMIlFqHfrDFTAoO+S7P1obxE0y5Wnb/OesEoIcwOOYCvPIBWRTMSyLap5tqMO0zv28QqX4uBF3UD/c/zdTI6dhU0UU3mx6p8Hh+5X3codg3mtbN8gcMtHixeUW6d4znwU0= 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=209.85.167.205 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-oi1-f205.google.com with SMTP id 5614622812f47-4893fc86bebso5685119b6e.0 for ; Mon, 29 Jun 2026 12:21:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782760883; x=1783365683; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=p6uN0DIJFEuCALiAXA/zS9OCPf9DsfpNlURZ91tEzM0=; b=b+pjQzc01LWjtNSp9FlBV9ZNvVrxIoRmJFprW3IhjzA3ts+wg2As7SRWGzqehJrdgd 0mva0ewas2uHLOTtFd75km5EjdNizd96+4AarVF1o5oF2SRSI+688jUZbKyj2DD6SIFN kS2/Wu713CX+FypICDYBpWWD3wciCZrokMDLViM7s+35CM+t17WOAfRSPezcWRGF+NtP fr8mCc1Q5YEVPQnVAv6gemIDaaZ1eOdDWzw147THaUFAZ4Eb1cPg8K0wNAVUOgmxdari cJksYZi0n5qiii/4Yi+4S8Ql4vbeh6+LkEmapYhPUBJGw+iWVImducInSj+Ni1PlL+Ib Y49g== X-Forwarded-Encrypted: i=1; AFNElJ8G57z8rQjEwGDmLad6DYOnfkY7QVHAwBuGjQ6kncUy3+OILXCr58KwAovwjrU3VVJ2MtGJdGmuvZAvypg=@vger.kernel.org X-Gm-Message-State: AOJu0YxJFiT5+YY2A0i0IPq8iHr0HDZ0sS5TJtSxu6Jy50CY1JbEo3/V hicnVrDz9TEoGR6VJk2BSxjwAJmXhrh/AiJJS1D/PECein4QR5tlYfG8RTNCE8KozgyKnfnwLmf Q8K4FftUtc92EfZygJDTv3jXRAYj5H0AtNFJ3NgMpSJINROPApKGpOkCcexc= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1c0f:b0:495:d79d:329b with SMTP id 5614622812f47-495eb1463d6mr546637b6e.40.1782760883640; Mon, 29 Jun 2026 12:21:23 -0700 (PDT) Date: Mon, 29 Jun 2026 12:21:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a42c5b3.9dc7bc9d.3393b4.0007.GAE@google.com> Subject: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_iomap_begin (2) From: syzbot To: almaz.alexandrovich@paragon-software.com, linux-kernel@vger.kernel.org, ntfs3@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 962528fef902 Merge tag 'gpio-fixes-for-v7.2-rc1' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17b6af41580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f9f817cd15d2732a dashboard link: https://syzkaller.appspot.com/bug?extid=4b4ec878e25fafefa70f compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7d3cfc78dc93/disk-962528fe.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/17f3cac25390/vmlinux-962528fe.xz kernel image: https://storage.googleapis.com/syzbot-assets/80baf6bfce4e/bzImage-962528fe.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4b4ec878e25fafefa70f@syzkaller.appspotmail.com loop1: detected capacity change from 0 to 4096 ===================================================== BUG: KMSAN: uninit-value in ntfs_iomap_begin+0x8a3/0x1550 fs/ntfs3/inode.c:781 ntfs_iomap_begin+0x8a3/0x1550 fs/ntfs3/inode.c:781 iomap_iter+0x9d9/0x14f0 fs/iomap/iter.c:110 iomap_read_folio+0x67c/0xb20 fs/iomap/buffered-io.c:645 ntfs_read_folio+0x74f/0x770 fs/ntfs3/inode.c:652 filemap_read_folio mm/filemap.c:2510 [inline] do_read_cache_folio+0x96d/0x13d0 mm/filemap.c:4140 do_read_cache_page mm/filemap.c:4206 [inline] read_cache_page+0x63/0x1e0 mm/filemap.c:4215 read_mapping_page include/linux/pagemap.h:1009 [inline] inode_read_data+0xbb/0x560 fs/ntfs3/inode.c:1058 ntfs_fill_super+0x720c/0x8820 fs/ntfs3/super.c:1582 get_tree_bdev_flags+0x6ef/0x930 fs/super.c:1634 get_tree_bdev+0x38/0x50 fs/super.c:1657 ntfs_fs_get_tree+0x35/0x40 fs/ntfs3/super.c:1819 vfs_get_tree+0xae/0x5d0 fs/super.c:1694 fc_mount fs/namespace.c:1198 [inline] do_new_mount_fc fs/namespace.c:3765 [inline] do_new_mount+0x885/0x1dc0 fs/namespace.c:3841 path_mount+0x7a2/0x20a0 fs/namespace.c:4161 do_mount fs/namespace.c:4174 [inline] __do_sys_mount fs/namespace.c:4390 [inline] __se_sys_mount+0x704/0x7f0 fs/namespace.c:4367 __x64_sys_mount+0xed/0x180 fs/namespace.c:4367 x64_sys_call+0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15d/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable lcn created at: ntfs_iomap_begin+0x157/0x1550 fs/ntfs3/inode.c:742 iomap_iter+0x9d9/0x14f0 fs/iomap/iter.c:110 CPU: 0 UID: 0 PID: 5852 Comm: syz.1.9 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 ===================================================== --- 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 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