From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 A41B32E40B for ; Sun, 1 Dec 2024 08:34:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733042070; cv=none; b=imNj84C5GGuQxSHLIiGF6lnDVsckvLj5UT3nJB7ahQjSmBuDA8cxxz6SeueiCv9rz6N6cSJ46twhqu4KODj6lr7f4PQ1Fcm3JGaGoa24sCDTn/wrnXcEkU05k5OpUcRTObFCE5/SR9EQGAQGCx7uCw1TsTIgHMLK+VZ06ndDZUE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733042070; c=relaxed/simple; bh=xo7iAfSM7u3LF/kSQ7PIU5z3RdO0smnf+ZelQZanKRU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=cJQqjmiXDcdmXg91f+c1psQJJ01HUkihlYc4853qsftMFgkjKzIZZ4P3K3joGcmbO6mOJt8lEJIqehJixIyX/2s0e7xPmWyjGf6s85Ihaq//SaTSDAwYzrnkH+bS/2SJmdkyXJ/TMvw8durqpPO929Tw3FM0KNm3bXhNpvP0guc= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a794990ef3so35976385ab.1 for ; Sun, 01 Dec 2024 00:34:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733042068; x=1733646868; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=EhaivmOwcdzarv/0HqZoatOD3z1I1AJiAjYdWR2LWzs=; b=B6hFqv7N5c0GOSV2qUpDGe6/E9feMgqtopiXKpjDcapWE5LW2GBVo8+/iTYaDOEgrV sqgbCclhJM5Auw7OidD6MRyjdjflv2TmAMjO7PSVLwJ3dpZiduZpvRjyecvYy+FmOVIS DsvT5Fa2eul99/OxsQ56ykWY2Ky2Z+Io+rYTwHH4gC37OuRCGbV9nVZZ3qhVgsEo6tSS gLaRraHyDhw+5yP9fin8x6Yu20fCpsK/cvqvizKjQo/HpyAUzXRM+c1tmJBdEXmGBqNr wek635NolRglCIgc6Iq+Sbo1nxL8c4JEjSZywt4xecW9gTCJMTpwtz4BKeP6bowHs2zV cOEg== X-Forwarded-Encrypted: i=1; AJvYcCW7QyMzCPVvmJGIZ/ZYoOPDmVaCT5CQ4972iP+HsX+/0WciN7peONruGj1n9DUQT6UWed0aDYXPndBs9nc=@vger.kernel.org X-Gm-Message-State: AOJu0Yy127WGozqu5juHJTsfuqgZwcruHvxiGXxbpujCYdmgEmsmiYM7 31GCnK5FHeGt94a4fRYS3yt+1JkBxwJHr7m61cgMyJllLA3HTylv4zCZwCRKWPi5b1p82/8kc7S YnwhWN3MogxWmrwcxy8DFHsEIDaKLUeGah44UIt05rqplMxHxhzx77pw= X-Google-Smtp-Source: AGHT+IEAJu7ZjRp11q0rt5teutxnpYaeZrKqlt7eWDm78Hb/DxZE0zu/2NQvL08TM26A5GmD5Nz/dhnFNXXoxxEQz2py6wIAJh15 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:12cd:b0:3a7:e786:afb4 with SMTP id e9e14a558f8ab-3a7e786bb16mr23765285ab.2.1733042067896; Sun, 01 Dec 2024 00:34:27 -0800 (PST) Date: Sun, 01 Dec 2024 00:34:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <674c1f93.050a0220.48a03.0009.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_bkey_ptrs_validate From: syzbot To: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 445d9f05fa14 Merge tag 'nfsd-6.13' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=150f83c0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c5486b9d7cc64830 dashboard link: https://syzkaller.appspot.com/bug?extid=5d8a06a9e86672d9f71f compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7024ceac9339/disk-445d9f05.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ebf50afbcd15/vmlinux-445d9f05.xz kernel image: https://storage.googleapis.com/syzbot-assets/9e60e080ed9e/bzImage-445d9f05.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5d8a06a9e86672d9f71f@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in __extent_entry_type fs/bcachefs/extents.h:54 [inline] BUG: KMSAN: uninit-value in bch2_bkey_ptrs_validate+0x589/0x2df0 fs/bcachefs/extents.c:1239 __extent_entry_type fs/bcachefs/extents.h:54 [inline] bch2_bkey_ptrs_validate+0x589/0x2df0 fs/bcachefs/extents.c:1239 bch2_bkey_val_validate+0x2b5/0x440 fs/bcachefs/bkey_methods.c:143 bset_key_validate fs/bcachefs/btree_io.c:841 [inline] validate_bset_keys+0x1531/0x2080 fs/bcachefs/btree_io.c:910 validate_bset_for_write+0x142/0x290 fs/bcachefs/btree_io.c:1942 __bch2_btree_node_write+0x53df/0x6830 fs/bcachefs/btree_io.c:2152 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2284 bch2_btree_node_rewrite+0x1442/0x1930 fs/bcachefs/btree_update_interior.c:2179 async_btree_node_rewrite_trans fs/bcachefs/btree_update_interior.c:2236 [inline] async_btree_node_rewrite_work+0x485/0x1710 fs/bcachefs/btree_update_interior.c:2249 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:393 [inline] bkey_p_copy fs/bcachefs/bkey.h:47 [inline] bch2_sort_keys_keep_unwritten_whiteouts+0x12d5/0x19d0 fs/bcachefs/bkey_sort.c:187 __bch2_btree_node_write+0x3ae8/0x6830 fs/bcachefs/btree_io.c:2095 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2284 bch2_btree_node_rewrite+0x1442/0x1930 fs/bcachefs/btree_update_interior.c:2179 async_btree_node_rewrite_trans fs/bcachefs/btree_update_interior.c:2236 [inline] async_btree_node_rewrite_work+0x485/0x1710 fs/bcachefs/btree_update_interior.c:2249 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was created at: ___kmalloc_large_node+0x22c/0x370 mm/slub.c:4238 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4255 __do_kmalloc_node mm/slub.c:4271 [inline] __kmalloc_node_noprof+0xc96/0x1250 mm/slub.c:4289 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:650 btree_node_data_alloc fs/bcachefs/btree_cache.c:153 [inline] __bch2_btree_node_mem_alloc+0x2be/0xa80 fs/bcachefs/btree_cache.c:198 bch2_fs_btree_cache_init+0x4e4/0xb50 fs/bcachefs/btree_cache.c:653 bch2_fs_alloc fs/bcachefs/super.c:917 [inline] bch2_fs_open+0x4d3a/0x5b40 fs/bcachefs/super.c:2065 bch2_fs_get_tree+0x983/0x22d0 fs/bcachefs/fs.c:2157 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 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:4034 ia32_sys_call+0x260e/0x4180 arch/x86/include/generated/asm/syscalls_32.h:22 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e CPU: 0 UID: 0 PID: 3613 Comm: kworker/u8:11 Tainted: G W 6.12.0-syzkaller-09734-g445d9f05fa14 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: btree_node_rewrite async_btree_node_rewrite_work ===================================================== --- 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