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 B9C472110E for ; Wed, 1 Jan 2025 20:55:19 +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=1735764921; cv=none; b=pZZxDFh13tPuQ9S9f4KrRH3tUnYJVDV/Kst4XEp022urQ1301pYj8IzytoALpvuOLTgGiYILquEC7oVJ5zn/q5rSBwqJFsAbxlJOZ3kMgARHaewEAe2ovVC4qdTd62xW741gKiE5RZVDpkWzRvwdHiEgPntFT0dk3qPwwv0bN4g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735764921; c=relaxed/simple; bh=sxfrBu1rCzfXr1oWL60ps/v9l3bBtt+vB2We+KEtAmM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ryKygfFdJ2nwKNP+mOMwwc20u9X5iCvJr1VuTwSjWHMxA8d5wURdwMPBRYEsjfyrlP4FDakRPVyIrjNJhIdDuxB58baBX9ANcUGgtLf+n3OVyvS92sJysDOswHxze8pCzwntojWXWqG9FhH3YXmqc4IBn+eePFZCuOEVueMrtBk= 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-3a78421a2e1so188164415ab.2 for ; Wed, 01 Jan 2025 12:55:19 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735764919; x=1736369719; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=VAGuy/a9W3IQtPB+h+HBKi8FmS2YmrW9upz+FGk6Hwo=; b=ag3B3hhQPXN/iWYf4TiInQwaI2sVTjDMs8/2wm3/Oa6bHkkUXrKwvnqPpJtKw6umed zNAI9efJv9i4RXmM+sRUqGdXlqVYuRq5kyT1Q/C+0DAIpllMhzVh45qhinjXc95kW5Q4 GeXs/JuSByowurcuWdBfetQIsp+HlOK6eszYMePen/zMH9wTlmyc2T66uFzG88cXfYhn RTbvWTWlG331y2KcvfbsoRq0s9penuLd/Q1y3Jm2LPlQTY0HMdcw77FerHtONahPAj+/ 8c82KkUTlCxzgnmdLrpavmccvp0jApMVEBy2QzqV2F+BNChWzgEjMXcRmUgnG0uIqZjF 9h4A== X-Forwarded-Encrypted: i=1; AJvYcCW4eydw6fzPlVo1fOy5QIw9nXUXQl7EezvTtgwegfUur9gMPwhLgXj4IyJ+W1RMkL0R+NySwtmOfH4u/TU=@vger.kernel.org X-Gm-Message-State: AOJu0Yw6wzpa4hVJoQsfDdkH+xrlEd71kY2LHC+sQRjQC+gXx9qMmxH4 mittExMQ7Ohzgh0nVHN95vXNv2OESrfhFKx4dlQFeNuOPuFa+3UWNdMyWUi0ymQp/ptY3Uvhmtk WKCJ1+m/jGYHfE7CWGQ71gvTKX9/TKwCaQFMDtsBvg6FW7/AAYbT1lnU= X-Google-Smtp-Source: AGHT+IFniLqpTUdlaFgWxWQniXbzvWJroIFbwdqqgCleA6qsxwZyKphCdnK+uv7wp5AYKcdsnGDEzexpjzQV//L5yua0IUFSH5Q/ 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:cda6:0:b0:3a7:8720:9e9f with SMTP id e9e14a558f8ab-3c2d14d1c30mr325906035ab.2.1735764918931; Wed, 01 Jan 2025 12:55:18 -0800 (PST) Date: Wed, 01 Jan 2025 12:55:18 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6775abb6.050a0220.3a8527.002c.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_inode_unpack (2) 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: ccb98ccef0e5 Merge tag 'platform-drivers-x86-v6.13-4' of g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13493818580000 kernel config: https://syzkaller.appspot.com/x/.config?x=31c2647cf06aa81e dashboard link: https://syzkaller.appspot.com/bug?extid=9b79c816ed3895539cf4 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/da86466e08c0/disk-ccb98cce.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/673316cfa30c/vmlinux-ccb98cce.xz kernel image: https://storage.googleapis.com/syzbot-assets/4d50a89ed2d4/bzImage-ccb98cce.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9b79c816ed3895539cf4@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in bch2_inode_unpack_v3 fs/bcachefs/inode.c:274 [inline] BUG: KMSAN: uninit-value in bch2_inode_unpack+0x9fb/0x4ca0 fs/bcachefs/inode.c:331 bch2_inode_unpack_v3 fs/bcachefs/inode.c:274 [inline] bch2_inode_unpack+0x9fb/0x4ca0 fs/bcachefs/inode.c:331 bch2_inode_rm+0xdbc/0x1260 fs/bcachefs/inode.c:1042 bch2_evict_inode+0x2d5/0x6a0 fs/bcachefs/fs.c:1836 evict+0x723/0xd10 fs/inode.c:796 iput_final fs/inode.c:1946 [inline] iput+0x97b/0xdb0 fs/inode.c:1972 bch2_symlink+0x49f/0x540 fs/bcachefs/fs.c:821 vfs_symlink+0x1ed/0x460 fs/namei.c:4669 do_symlinkat+0x253/0x8b0 fs/namei.c:4695 __do_sys_symlink fs/namei.c:4716 [inline] __se_sys_symlink fs/namei.c:4714 [inline] __x64_sys_symlink+0xe0/0x140 fs/namei.c:4714 x64_sys_call+0x31ca/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:89 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 stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:393 [inline] bkey_reassemble fs/bcachefs/bkey.h:513 [inline] btree_key_cache_create fs/bcachefs/btree_key_cache.c:259 [inline] btree_key_cache_fill+0xd1a/0x3d60 fs/bcachefs/btree_key_cache.c:309 bch2_btree_path_traverse_cached+0x988/0xe20 fs/bcachefs/btree_key_cache.c:361 bch2_btree_path_traverse_one+0x749/0x47b0 fs/bcachefs/btree_iter.c:1159 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] bch2_btree_iter_peek_slot+0x10b7/0x3950 fs/bcachefs/btree_iter.c:2629 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:575 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:589 [inline] bch2_inode_rm+0x95d/0x1260 fs/bcachefs/inode.c:1027 bch2_evict_inode+0x2d5/0x6a0 fs/bcachefs/fs.c:1836 evict+0x723/0xd10 fs/inode.c:796 iput_final fs/inode.c:1946 [inline] iput+0x97b/0xdb0 fs/inode.c:1972 bch2_symlink+0x49f/0x540 fs/bcachefs/fs.c:821 vfs_symlink+0x1ed/0x460 fs/namei.c:4669 do_symlinkat+0x253/0x8b0 fs/namei.c:4695 __do_sys_symlink fs/namei.c:4716 [inline] __se_sys_symlink fs/namei.c:4714 [inline] __x64_sys_symlink+0xe0/0x140 fs/namei.c:4714 x64_sys_call+0x31ca/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:89 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: ___kmalloc_large_node+0x22c/0x370 mm/slub.c:4253 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4270 __do_kmalloc_node mm/slub.c:4286 [inline] __kmalloc_node_noprof+0xc96/0x1250 mm/slub.c:4304 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:650 btree_bounce_alloc fs/bcachefs/btree_io.c:124 [inline] btree_node_sort+0x78a/0x1d30 fs/bcachefs/btree_io.c:323 bch2_btree_post_write_cleanup+0x1b0/0xf20 fs/bcachefs/btree_io.c:2248 bch2_btree_node_write+0x21c/0x2e0 fs/bcachefs/btree_io.c:2289 btree_node_write_if_need fs/bcachefs/btree_io.h:151 [inline] __btree_node_flush+0x606/0x680 fs/bcachefs/btree_trans_commit.c:252 bch2_btree_node_flush0+0x35/0x60 fs/bcachefs/btree_trans_commit.c:261 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:565 __bch2_journal_reclaim+0xda8/0x1670 fs/bcachefs/journal_reclaim.c:698 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:740 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 CPU: 0 UID: 0 PID: 6027 Comm: syz.1.13 Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #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