From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B6D141A8407; Tue, 8 Apr 2025 17:48:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744134535; cv=none; b=BTNBpjPgLJYjNDtsnVUOnKRyDYoJA56y18i3K8HoZuB0fng6KtOOjxGK8T0DYSUrUkYNlpoERbHuJN8O0hz7Mbcr4Ls4JlTddcjPHSd0meUMd+JKvy/t8VsLkljHIv5proVmAYKF4kX96Q3rZJp2hCAR1x0tZUqBLgbfwV3kUFk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744134535; c=relaxed/simple; bh=TdcykO/mghNf7CApPAPiGbc4Ap+76aFjaQ1G0ZF/1Fw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qAw8hynYVbvTZXKV9PJ5wuU2hzVTIHxiZMwBCJw/4MLPL8VL9I7+WLzUw6d49Vnkj7169IKJVI6B+mcaHdiWTzen2UO6iwmwMK6eHTqhqQ4hxqrFugRgHTCwtvGFau6diyEKc4GnJ6MEDS/ug1dtLJo4vD4MWpSPsyBmOFB3phM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=r011JZJ1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="r011JZJ1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90F30C4CEE5; Tue, 8 Apr 2025 17:48:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744134535; bh=TdcykO/mghNf7CApPAPiGbc4Ap+76aFjaQ1G0ZF/1Fw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=r011JZJ1Bwu5Q3CTglhODEsz9xvCkNNFznG4hJq0zj2FGM9UvvS6i18OLvLwe9EIW wbciFnly4IhqfzgqcxVGhGbTXEPXWtX2tSZsbyJQCDrZj0lsAvc1ctVYf4zeFktpIZ 3vZm/cpmUHcjicVH0gPjtT+TAKnAPx/IS2GpFhx4eiyBRRwaYtosGcFp+8vzy3Bw+N XTN8eS0glsG4Jmqi5/T5CorQajBJXZ0O9B3f/BZ4GGrHHd3u+4exvp31qgZ7FBuoU8 kzzNFYOm4wswHtUy1uL8Clg7ln3OgJeic63egQay8Be9BmABHamxhE98z7PlVQxf2P JtSj3XxUtX+og== Date: Tue, 8 Apr 2025 10:48:55 -0700 From: "Darrick J. Wong" To: Luis Chamberlain Cc: David Bueso , Jan Kara , Kefeng Wang , Tso Ted , Ritesh Harjani , Johannes Weiner , Oliver Sang , Matthew Wilcox , David Hildenbrand , Alistair Popple , linux-mm@kvack.org, Christian Brauner , Hannes Reinecke , oe-lkp@lists.linux.dev, lkp@intel.com, John Garry , linux-block@vger.kernel.org, ltp@lists.linux.it, Pankaj Raghav , Daniel Gomez , Dave Chinner , gost.dev@samsung.com, linux-fsdevel Subject: Re: [linux-next:master] [block/bdev] 3c20917120: BUG:sleeping_function_called_from_invalid_context_at_mm/util.c Message-ID: <20250408174855.GI6307@frogsfrogsfrogs> References: <20250331074541.gK4N_A2Q@linutronix.de> <20250408164307.GK6266@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Apr 08, 2025 at 10:24:40AM -0700, Luis Chamberlain wrote: > On Tue, Apr 8, 2025 at 10:06 AM Luis Chamberlain wrote: > > Fun > > puzzle for the community is figuring out *why* oh why did a large folio > > end up being used on buffer-heads for your use case *without* an LBS > > device (logical block size) being present, as I assume you didn't have > > one, ie say a nvme or virtio block device with logical block size > > > PAGE_SIZE. The area in question would trigger on folio migration *only* > > if you are migrating large buffer-head folios. We only create those > > To be clear, large folios for buffer-heads. > > if > > you have an LBS device and are leveraging the block device cache or a > > filesystem with buffer-heads with LBS (they don't exist yet other than > > the block device cache). My guess is that udev or something tries to read the disk label in response to some uevent (mkfs, mount, unmount, etc), which creates a large folio because min_order > 0, and attaches a buffer head. There's a separate crash report that I'll cc you on. --D From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1D5FDC369A4 for ; Tue, 8 Apr 2025 17:49:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.linux.it; i=@lists.linux.it; q=dns/txt; s=picard; t=1744134560; h=date : to : message-id : references : mime-version : in-reply-to : subject : list-id : list-unsubscribe : list-archive : list-post : list-help : list-subscribe : from : reply-to : cc : content-type : content-transfer-encoding : sender : from; bh=yMdlZbnyVsyZ/VnEg99Q0M+qlAmGulmxGbWKrFiSACI=; b=J3SHmLKFRngYzANALdM0sSbdmngAHcZn0xgwujutB4ka7sRub4fNXHqzASDZEeyACZrvC hAJVhb4O0ccq95Usg0ca3Du13HQYAtZ5lFGO+J9jGbiotqQLciix/0EYsBfcSKAJkODPATg m9JVFfo2PIhGeg+CfEd9+IFaruaFkQw= Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 45A313CB3BF for ; Tue, 8 Apr 2025 19:49:20 +0200 (CEST) Received: from in-5.smtp.seeweb.it (in-5.smtp.seeweb.it [217.194.8.5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id AAE523CABDA for ; Tue, 8 Apr 2025 19:48:58 +0200 (CEST) Authentication-Results: in-5.smtp.seeweb.it; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=172.234.252.31; helo=sea.source.kernel.org; envelope-from=djwong@kernel.org; receiver=lists.linux.it) Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-5.smtp.seeweb.it (Postfix) with ESMTPS id E0551600C94 for ; Tue, 8 Apr 2025 19:48:57 +0200 (CEST) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 044B344B5A; Tue, 8 Apr 2025 17:48:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90F30C4CEE5; Tue, 8 Apr 2025 17:48:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744134535; bh=TdcykO/mghNf7CApPAPiGbc4Ap+76aFjaQ1G0ZF/1Fw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=r011JZJ1Bwu5Q3CTglhODEsz9xvCkNNFznG4hJq0zj2FGM9UvvS6i18OLvLwe9EIW wbciFnly4IhqfzgqcxVGhGbTXEPXWtX2tSZsbyJQCDrZj0lsAvc1ctVYf4zeFktpIZ 3vZm/cpmUHcjicVH0gPjtT+TAKnAPx/IS2GpFhx4eiyBRRwaYtosGcFp+8vzy3Bw+N XTN8eS0glsG4Jmqi5/T5CorQajBJXZ0O9B3f/BZ4GGrHHd3u+4exvp31qgZ7FBuoU8 kzzNFYOm4wswHtUy1uL8Clg7ln3OgJeic63egQay8Be9BmABHamxhE98z7PlVQxf2P JtSj3XxUtX+og== Date: Tue, 8 Apr 2025 10:48:55 -0700 To: Luis Chamberlain Message-ID: <20250408174855.GI6307@frogsfrogsfrogs> References: <20250331074541.gK4N_A2Q@linutronix.de> <20250408164307.GK6266@frogsfrogsfrogs> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Virus-Scanned: clamav-milter 1.0.3 at in-5.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [linux-next:master] [block/bdev] 3c20917120: BUG:sleeping_function_called_from_invalid_context_at_mm/util.c X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: "Darrick J. 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Wong" Cc: Ritesh Harjani , Kefeng Wang , Jan Kara , David Hildenbrand , Dave Chinner , linux-mm@kvack.org, David Bueso , lkp@intel.com, gost.dev@samsung.com, Alistair Popple , Matthew Wilcox , Pankaj Raghav , John Garry , Daniel Gomez , linux-fsdevel , Hannes Reinecke , ltp@lists.linux.it, linux-block@vger.kernel.org, Christian Brauner , Tso Ted , Oliver Sang , Johannes Weiner , oe-lkp@lists.linux.dev Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" T24gVHVlLCBBcHIgMDgsIDIwMjUgYXQgMTA6MjQ6NDBBTSAtMDcwMCwgTHVpcyBDaGFtYmVybGFp biB3cm90ZToKPiBPbiBUdWUsIEFwciA4LCAyMDI1IGF0IDEwOjA24oCvQU0gTHVpcyBDaGFtYmVy bGFpbiA8bWNncm9mQGtlcm5lbC5vcmc+IHdyb3RlOgo+ID4gRnVuCj4gPiBwdXp6bGUgZm9yIHRo ZSBjb21tdW5pdHkgaXMgZmlndXJpbmcgb3V0ICp3aHkqIG9oIHdoeSBkaWQgYSBsYXJnZSBmb2xp bwo+ID4gZW5kIHVwIGJlaW5nIHVzZWQgb24gYnVmZmVyLWhlYWRzIGZvciB5b3VyIHVzZSBjYXNl ICp3aXRob3V0KiBhbiBMQlMKPiA+IGRldmljZSAobG9naWNhbCBibG9jayBzaXplKSBiZWluZyBw cmVzZW50LCBhcyBJIGFzc3VtZSB5b3UgZGlkbid0IGhhdmUKPiA+IG9uZSwgaWUgc2F5IGEgbnZt ZSBvciB2aXJ0aW8gYmxvY2sgZGV2aWNlIHdpdGggbG9naWNhbCBibG9jayBzaXplICA+Cj4gPiBQ QUdFX1NJWkUuIFRoZSBhcmVhIGluIHF1ZXN0aW9uIHdvdWxkIHRyaWdnZXIgb24gZm9saW8gbWln cmF0aW9uICpvbmx5Kgo+ID4gaWYgeW91IGFyZSBtaWdyYXRpbmcgbGFyZ2UgYnVmZmVyLWhlYWQg Zm9saW9zLiBXZSBvbmx5IGNyZWF0ZSB0aG9zZQo+IAo+IFRvIGJlIGNsZWFyLCBsYXJnZSBmb2xp b3MgZm9yIGJ1ZmZlci1oZWFkcy4KPiA+IGlmCj4gPiB5b3UgaGF2ZSBhbiBMQlMgZGV2aWNlIGFu ZCBhcmUgbGV2ZXJhZ2luZyB0aGUgYmxvY2sgZGV2aWNlIGNhY2hlIG9yIGEKPiA+IGZpbGVzeXN0 ZW0gd2l0aCBidWZmZXItaGVhZHMgd2l0aCBMQlMgKHRoZXkgZG9uJ3QgZXhpc3QgeWV0IG90aGVy IHRoYW4KPiA+IHRoZSBibG9jayBkZXZpY2UgY2FjaGUpLgoKTXkgZ3Vlc3MgaXMgdGhhdCB1ZGV2 IG9yIHNvbWV0aGluZyB0cmllcyB0byByZWFkIHRoZSBkaXNrIGxhYmVsIGluCnJlc3BvbnNlIHRv IHNvbWUgdWV2ZW50IChta2ZzLCBtb3VudCwgdW5tb3VudCwgZXRjKSwgd2hpY2ggY3JlYXRlcyBh CmxhcmdlIGZvbGlvIGJlY2F1c2UgbWluX29yZGVyID4gMCwgYW5kIGF0dGFjaGVzIGEgYnVmZmVy IGhlYWQuICBUaGVyZSdzCmEgc2VwYXJhdGUgY3Jhc2ggcmVwb3J0IHRoYXQgSSdsbCBjYyB5b3Ug b24uCgotLUQKCi0tIApNYWlsaW5nIGxpc3QgaW5mbzogaHR0cHM6Ly9saXN0cy5saW51eC5pdC9s aXN0aW5mby9sdHAK