From nobody Mon Sep 28 07:17:07 2026 Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) (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 1B9602FFFA4 for ; Tue, 25 Aug 2026 05:30:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.198 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787635846; cv=none; b=ie+bHoDC62SykDS121nW0Bf9l3MMjSuNCEDw9HpXMBZDQQkrj04YOE24Hs1luWUoG/25evB32lbF64jdjg4aXSSK++K9muQJniymiQe2YcVp/HNt14bb3L55SJZX2w9U+IE6OKF0Ddqc4Fpaxilu6X01MD52Y27eRA1nhfpiQ5Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787635846; c=relaxed/simple; bh=36MmkcJknD+8MaAF2iYt7A6457GUlMkCWxDV5pxVu/A=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=LQW2YRRyC3thbLc1ev+KGrGR8R1n5Ir/THxsoyD+ZexeUEQtCJdYYk9OGlnRc/yPNeBWNle2etEfi9mOpYS3pJPO483tRYOwx/T27XeYQiejzxBYy63ty1UaDFsCZxlIgDIWiTtPj/tFxOcdV/vM0rlfKAxjRFV0Yd480dQIYyE= 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=209.85.167.198 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-f198.google.com with SMTP id 5614622812f47-4ab4dd46ddeso3598768b6e.3 for ; Mon, 24 Aug 2026 22:30:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787635844; x=1788240644; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=zd23QT4eFXIaMxQyTmde8g2nKQiHLYDrVErq7HzGiKE=; b=L6j5ba2D0gSCc/35vT6M7qcnRY59hs2J9WRMI79gwDkLqrnoelKldpvQTUa2FErJW4 F7yGheBFMJMgiKVNQtoC1Fp0b/KMnZdnzhfvG2ZKmzifW8Za1mzkI/eChQkqKNuFQdbn LoSI0Eevg5E6vZBue7LRluG3bGWTPJPNHULeWHcCI3+5wsBSXl+c2QyLMkpaTnv2mI+j Tg0CTHN8b2iwL4AjvoQQXK7Q5WIOHh1PfcydY57J5OagAQUXBWZ6kfmSFBQ4JHEx9wpd g2EAfkIIliwUESdFeFHnMdfk3WgDzBfJuudvE003v3ezRbV2GO94ynieM9k1NV+HsOoA gWBQ== X-Gm-Message-State: AFuF++lt9l2rFOlPl0ZIc3ii9NKvQ9u9HtPSTNhzCHYBfZdPdQEM98zf MCnoFgGEsotd9kZqAS+Lm4qa8bfHPIzphbEY9TnfkhI/oDFkmhwzlkwPX17f6Osxac84pSKnMOI jaIj8/CsFloj0clQlWWbyfIK1feqpFhuGhZwyLYrG/Knx5eq8rmpwMHdfmYM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:c292:b0:49b:33c8:4b75 with SMTP id 5614622812f47-4b309a50d08mr22251602b6e.5.1787635843962; Mon, 24 Aug 2026 22:30:43 -0700 (PDT) Date: Mon, 24 Aug 2026 22:30:43 -0700 In-Reply-To: <6a7eddb1.dbb3a75c.20434b.0003.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8d2883.dbb3a75c.7844.0021.GAE@google.com> Subject: Forwarded: Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in null_process_zoned_cmd From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [fs?] BUG: sleeping function called from invalid cont= ext in null_process_zoned_cmd Author: chenglingfei@foxmail.com #syz test diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index f8c0fd57e041..0dc7fd106db8 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1912,6 +1912,12 @@ static int null_validate_conf(struct nullb_device *d= ev) dev->blocking =3D true; else /* cache is meaningless */ dev->cache_size =3D 0; + + if (dev->shared_tags && dev->blocking && !g_blocking) { + pr_info("shared_tags disabled: memory_backed/blocking device requires pe= r-device tag set for BLK_MQ_F_BLOCKING\n"); + dev->shared_tags =3D false; + } + dev->cache_size =3D min_t(unsigned long, ULONG_MAX / 1024 / 1024, dev->cache_size); dev->mbps =3D min_t(unsigned int, 1024 * 40, dev->mbps);