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 79BF2238D54 for ; Sat, 31 May 2025 15:09:30 +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=1748704172; cv=none; b=UPxD+RnXzy7bGM/piu7xIdZPWjhvacHJjA1PXsrzD9wIU7yS7dhx14NAqJOpqGHrlnUzHpfsr0vLKp19zO4IML4nNkkzBhXW96ln969vMxkmAWGkpNpCva6B/HYw/0NCGMzddd4UqrOEBW7YUR+Xn8ajlBzgroRNzr5hqXsBNpw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748704172; c=relaxed/simple; bh=93CTDjAEeete/R0+aItsc4Xp81vKNUARVLfomt68FpE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=sxneRMX/PXyldTJC230t6vgNr52ocZTKZoL3HvpdMht+cpDAuaCtLvHrefyznLYQdFtbtZKHGPQU+LwVCMCOarpEwGAJufwiD8k4Mlq67mc4eIgOFjLb31Ef8ovw5i+TurrslA/jxtBLkZj4NzyYg2YC8O9+XuBvjofHQrrZ1/o= 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-3dd74e0f5c7so22355645ab.0 for ; Sat, 31 May 2025 08:09:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748704169; x=1749308969; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=WE8P8A1gyjt3ODkAsUD5vrdPdzj1YbuWYd41n4eMzfE=; b=gHrW6Ir23lVOn2rkGbU6nwv+aR7GD7Ca1U59bFBsxw339dpQzwBCSBPDT8/caMg78T QsLEvFlaqUZRVL6wogucmzn1GTiLPVZaTFajhq1b6Aa427mTV3ZqHuA32E3ngcUWekN3 Fx1ki2OXUGHMFnVxHrQn3Dg4w3uKc5eP/1ViVx+cEzbuJDtqL811A4+DGMNoAU/pOQR5 WXPjDFQYtqzrv9Dy7HbdhFgNwy5yrcXBLaAVfGUH5VdlIxdrbCR7g5198udlV2xdsdFP 7eYaZml1I7hdDh0IbGdmhICVpOAxR/GNcgbkHW2iLmG8aqosr4fVA+SFTwHokHYGNIMV rBHg== X-Forwarded-Encrypted: i=1; AJvYcCVRbq7tJEJ85ZxG2Wp4Ohp2+DRMgoMcYK37v7LM1EpTfeUSM/a5bZUE45R+06P/M8PxLYaPuX+HnjC2MZ/aAw==@vger.kernel.org X-Gm-Message-State: AOJu0YyLo7wu0DEFZ6CfVE9PqZyuRKtnYOGvbRLseojRH0W213p8fp8b mPfHJn5YprnBddEodXhIQD2HCTryRIxoCpOu0l6fJL1u5Xgd3s8cuKFrOfsoDKfjPLdFLHYVdHV V9DmMDeIH5q5+LklyOJD6uJe8HSnB5X8MmZtuPobh/FaRYFMDtiAnMh59xdM= X-Google-Smtp-Source: AGHT+IEd4aWdUvLJ1nbpNE26CWMzem3tFRHP4TBrQsPrEiC3oXuUjUoGfMZUsrttt+HTz5aHYPZyIAlRB+xgYKhDWGpU697gfhT0 Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1fef:b0:3dd:792d:ce42 with SMTP id e9e14a558f8ab-3dd9c738eb3mr60576285ab.0.1748704169599; Sat, 31 May 2025 08:09:29 -0700 (PDT) Date: Sat, 31 May 2025 08:09:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <683b1ba9.a00a0220.d8eae.0019.GAE@google.com> Subject: [syzbot] [bcachefs?] WARNING in lookup_object_or_alloc 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: 015a99fa7665 Merge tag 'nolibc-20250526-for-6.16-1' of git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16fcedf4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=231a962e5fdb804b dashboard link: https://syzkaller.appspot.com/bug?extid=88e6a26b68fb670364e1 compiler: gcc (Debian 12.2.0-14) 12.2.0, 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/f68bd0ec2940/disk-015a99fa.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8c78735943b8/vmlinux-015a99fa.xz kernel image: https://storage.googleapis.com/syzbot-assets/7d9332085f01/bzImage-015a99fa.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+88e6a26b68fb670364e1@syzkaller.appspotmail.com ODEBUG: object ffffc9000d537a98 is on stack ffffc9000d530000, but NOT annotated. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16496 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline] WARNING: CPU: 1 PID: 16496 at lib/debugobjects.c:655 lookup_object_or_alloc.part.0+0x2b1/0x590 lib/debugobjects.c:688 Modules linked in: CPU: 1 UID: 0 PID: 16496 Comm: bch-copygc/loop Not tainted 6.15.0-syzkaller-02443-g015a99fa7665 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:655 [inline] RIP: 0010:lookup_object_or_alloc.part.0+0x2b1/0x590 lib/debugobjects.c:688 Code: 0e 48 8d 7d 20 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 58 02 00 00 48 8b 55 20 4c 89 e6 48 c7 c7 c0 07 f5 8b e8 60 ff bf fc 90 <0f> 0b 90 48 83 c4 18 48 89 d8 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b1 RSP: 0018:ffffc9000d5377b0 EFLAGS: 00010086 RAX: 0000000000000050 RBX: ffff8880347347a8 RCX: ffffffff819a71b9 RDX: 0000000000000000 RSI: ffffffff819af046 RDI: 0000000000000005 RBP: ffff88801f7e3c00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000002be0 R12: ffffc9000d537a98 R13: ffff88801f7e3c00 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124aaa000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdb0980f000 CR3: 0000000030dfd000 CR4: 0000000000350ef0 Call Trace: lookup_object_or_alloc lib/debugobjects.c:665 [inline] __debug_object_init+0x2a9/0x3d0 lib/debugobjects.c:743 __init_work+0x4c/0x60 kernel/workqueue.c:677 rhashtable_init_noprof+0x49f/0x7e0 lib/rhashtable.c:1085 bch2_copygc_thread+0xf6/0xdd0 fs/bcachefs/movinggc.c:355 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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