From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 EC3EE53AC for ; Sun, 29 Dec 2024 07:45:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735458324; cv=none; b=L09TugoqAITZYZFyls7VFt7pMeeJoDN1PrxVkd5yY//RSf9/x0yxqDRkA9AbhCnNIwsHSbmw0LDz/josFk7zO7+a9J+SxT6dzFB3Bmn6GPic0fZb6/4ZZSw6zrrhCZwgyXV0z+/fxww/u6cDCcPFPAXHTMQs8noBmgLmQSbx6Mo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735458324; c=relaxed/simple; bh=E3fbW8/oMo8GlFhi/t1jtfJQazjqo9wIfuDT0DKzPEw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Bqm02P0MloYqpK3ANt1GHR7+IOlpd1tJc8XBf+UoVsE6wk+VQfaLgVnlvZoBMbO7Jy6yvd6HreYtBg8djxykMg4dy/Pekbz9HLCu3NXjJBry2tmQtxD9/5SlS+qlOCrMm9xO0s+slnRgtipe5wpRPceMHRg7tF68jH/MghU3hB4= 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=209.85.166.205 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-il1-f205.google.com with SMTP id e9e14a558f8ab-3a814bfb77bso84654355ab.0 for ; Sat, 28 Dec 2024 23:45:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735458322; x=1736063122; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=nY6FF6wVIPIvHMSTg3r+V8IDeKu8vi/BaNbTpEgfI7Y=; b=ioEldJ4mrNWZBvaPJ2zmSF2h1HqUaxNoUxJPtLxhZRRIbTyWhr44r8HZ5TofWoWlYO mnrgfRb/paOqa17TiCL/Vh7j5EGyz7jpf+2NubHiIj2o9W2QYUu3k3lhD58uXMf3bBa9 1zJN3T5TWWmnlJ2EwtURsQDgSLs826PW/WElQZ+ZacYnUTTfYHLKscU4uXduwxf6neUj HmOphOSbi/JS0Ek0k0jZwBc0Y6LvxpVq91WfqLg0TAgtMVPNV08cUQWoDcIBAoycTpvK t7UMXp5mCILVPFCj8Vpd4DkeGw03Z5tT/G7hJInKrBnnil3NLrtgsDaio/51M9wpO02B kVAQ== X-Forwarded-Encrypted: i=1; AJvYcCVQxe8Pwjp243emPydTUYIaHJ8+nEwv84Kobbx1jLGHepBQDADXk+W40ogSlNpoZ5Z4xZfjgEiL9feoBEM=@vger.kernel.org X-Gm-Message-State: AOJu0YxzpuwIcz+T+pwm7FECsODz8/x1ZDFNuLHLmufckOdGOEhWxers cCwgmaehhVVvpBlcd/dl9VBN8AnyUxvJxF7eS1JzKtVNlzeJgGU2vd0DxoUEaER5HcfRYs37l7Y srUaS9xbqV8NZVG7c2WOFCpViSE2kT5lj3aZj/WVodX1ks7NjyFJIZ+E= X-Google-Smtp-Source: AGHT+IGKspHP6xb6eul/Z3USvCrw5kbj0TtsYcddWmq5Bh47TjtFUExS4AkuKmPn3eRPOY39g4v0ZIwLd423kYKBKRqUq6zKINOz Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c44:b0:3a7:c563:d3ad with SMTP id e9e14a558f8ab-3c03093ec46mr274867815ab.11.1735458322154; Sat, 28 Dec 2024 23:45:22 -0800 (PST) Date: Sat, 28 Dec 2024 23:45:22 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6770fe12.050a0220.226966.00bb.GAE@google.com> Subject: [syzbot] [erofs?] KMSAN: uninit-value in erofs_fc_fill_super From: syzbot To: chao@kernel.org, dhavale@google.com, jefflexu@linux.alibaba.com, linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiang@kernel.org, zbestahu@gmail.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 9b2ffa6148b1 Merge tag 'mtd/fixes-for-6.13-rc5' of git://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=112374c4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f9048090d7bb0d06 dashboard link: https://syzkaller.appspot.com/bug?extid=1379ee6b9a14d5dacaf2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/244f25c1a275/disk-9b2ffa61.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0d14fc6634fd/vmlinux-9b2ffa61.xz kernel image: https://storage.googleapis.com/syzbot-assets/cb152a4c0fd2/bzImage-9b2ffa61.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1379ee6b9a14d5dacaf2@syzkaller.appspotmail.com exFAT-fs (loop7): failed to load upcase table (idx : 0x00010000, chksum : 0x1a9973fb, utbl_chksum : 0xe619d30d) ===================================================== BUG: KMSAN: uninit-value in erofs_read_superblock fs/erofs/super.c:274 [inline] BUG: KMSAN: uninit-value in erofs_fc_fill_super+0x66a/0x2520 fs/erofs/super.c:614 erofs_read_superblock fs/erofs/super.c:274 [inline] erofs_fc_fill_super+0x66a/0x2520 fs/erofs/super.c:614 vfs_get_super fs/super.c:1280 [inline] get_tree_nodev+0x183/0x350 fs/super.c:1299 erofs_fc_get_tree+0x34d/0x450 fs/erofs/super.c:721 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814 do_new_mount+0x71f/0x15e0 fs/namespace.c:3507 path_mount+0x742/0x1f10 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x722/0x810 fs/namespace.c:4034 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4034 x64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __alloc_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4776 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2269 alloc_pages_noprof mm/mempolicy.c:2348 [inline] folio_alloc_noprof+0x1db/0x310 mm/mempolicy.c:2355 filemap_alloc_folio_noprof+0xa6/0x440 mm/filemap.c:1009 __filemap_get_folio+0xac4/0x1550 mm/filemap.c:1951 block_write_begin+0x6e/0x2b0 fs/buffer.c:2221 exfat_write_begin+0xfb/0x400 fs/exfat/inode.c:434 exfat_extend_valid_size fs/exfat/file.c:553 [inline] exfat_file_write_iter+0x771/0x12a0 fs/exfat/file.c:598 do_iter_readv_writev+0x88a/0xa30 vfs_writev+0x56a/0x14f0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x262/0x460 fs/read_write.c:1195 __x64_sys_pwritev2+0x11f/0x1a0 fs/read_write.c:1195 x64_sys_call+0x368c/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:329 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 8448 Comm: syz.7.643 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ===================================================== --- 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