From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f207.google.com (mail-oi1-f207.google.com [209.85.167.207]) (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 C5675156F45 for ; Sat, 1 Aug 2026 00:02:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785542556; cv=none; b=pnxugIXr51diqws6q9gkfbM3mmki0Gv8OI7EjEdkYRT+xMrkbnrD2X/uvaoMmAePSNDablBOSvPFvpUvYplJiDDlmHcND2Vbc2O9NZiKWsNcYSCae/GaamD7f3TPM+pml8xWBf0arw1t+MNh2IOEeUSpHBZKbyVtK87POJivZ7c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785542556; c=relaxed/simple; bh=JaU3caxFVFwMyom75rwMTb7LERFctV23hSea/iGphe0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=QRDPXYASUyPdMWjWvPNeuzHqMh3qfGgPV4lclMazlo0urIUa1c0R+8qgz7A9fgRRtE2w9OxytatCY5Mz7+z+8kE5f5t+lhZVcz153zUnMZN1U4mTuOe3+v/uatPGCJ0hdGodCx6SpY/kaRGn7V905C+4ao3e1PFpr3w2Mruv1PE= 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=209.85.167.207 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-oi1-f207.google.com with SMTP id 5614622812f47-495b0cf250dso1029093b6e.3 for ; Fri, 31 Jul 2026 17:02:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785542553; x=1786147353; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=rFyCpefvMGzPrpmSLpCr1pgbbopabY4nKezDrskUMLM=; b=VaKj2V952GLP/4p2I0V3iPHoZhZnbbjyXaq+P1infko+vgWPhDRiVe7o0ALfu/bwj+ KpvkcUJtIzMFOeCd3KzuTtwTZTLpHUcMa0UWuHtOE/kl8R4LHT86/EbTH5E5tmSlHPCp W04oDD+WFnleqgeBhQXAYLcowTskx6GffHGUXGu557p/Bd7Lk8RLkw5wcoqUt/CpQVkN la0I0HIkdEu9Mfh3YOJvUZtSfgHjnySntIv4qVo2Z0MI3NQBvnZm6a+nfbrbbJ3emJqt vK6qTd4ZDPZXSGcP0qd7EDxLHY9tovSKAFjRKqfmk4Br8DKDxdz0QycQ+9bJFcur6jpK JBDQ== X-Forwarded-Encrypted: i=1; AHgh+RoLObwKniMYs1fa8cL/F2yDa8RHJ0HEci2gPaJZHZMJSly6ZajJbk1LJSSsDzuGrflE2BZf2QU=@vger.kernel.org X-Gm-Message-State: AOJu0YzuDu57ToAnJrCP0+7kOkZdAQbKi0jLPpvs7azymVR8egz4W/HN TYxgcTjX6Qeeippi6zQMMyI/lO6QaniglFyMyaEwCTrHTYZru3XoY6kH4oiKHNhKb5Prml9vJZh gHsxS1wZ1lNCqam+FyLBoDiCX3Z/CkSsKaTq4l6c9wg6Olq/4YZ+ElYAa7xg= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:17aa:b0:487:530f:5754 with SMTP id 5614622812f47-4af5e2f59b4mr4105953b6e.20.1785542553628; Fri, 31 Jul 2026 17:02:33 -0700 (PDT) Date: Fri, 31 Jul 2026 17:02:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a6d3799.2d659fcc.1d46f5.01a6.GAE@google.com> Subject: [syzbot] [afs?] [net?] BUG: using smp_processor_id() in preemptible code in radix_tree_node_alloc (2) From: syzbot To: davem@davemloft.net, dhowells@redhat.com, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, marc.dionne@auristor.com, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 11028ab62899 Merge tag 'probes-fixes-v7.2-rc5' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=130cec99580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c05be6c9b0d36cb9 dashboard link: https://syzkaller.appspot.com/bug?extid=86abcd2aa855d0add658 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 (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-11028ab6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/511647651d7f/vmlinux-11028ab6.xz kernel image: https://storage.googleapis.com/syzbot-assets/1c76180d0109/bzImage-11028ab6.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+86abcd2aa855d0add658@syzkaller.appspotmail.com BUG: using smp_processor_id() in preemptible [00000000] code: krxrpcio/0/5331 caller is radix_tree_node_alloc+0x1b3/0x3a0 lib/radix-tree.c:263 CPU: 0 UID: 0 PID: 5331 Comm: krxrpcio/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 check_preemption_disabled+0xd3/0xe0 lib/smp_processor_id.c:47 radix_tree_node_alloc+0x1b3/0x3a0 lib/radix-tree.c:263 idr_get_free+0x28f/0xa10 lib/radix-tree.c:1506 idr_alloc_u32+0x18a/0x330 lib/idr.c:48 idr_alloc_cyclic+0x9c/0x1b0 lib/idr.c:127 rxrpc_alloc_client_connection net/rxrpc/conn_client.c:165 [inline] rxrpc_add_conn_to_bundle net/rxrpc/conn_client.c:353 [inline] rxrpc_bundle_has_space net/rxrpc/conn_client.c:404 [inline] rxrpc_connect_client_calls+0x74f/0x12c0 net/rxrpc/conn_client.c:524 rxrpc_io_thread+0x2d9a/0x3290 net/rxrpc/io_thread.c:536 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 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