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[2620:137:e000::1:20]) by mx.google.com with ESMTP id nb1-20020a1709071c8100b0072b132aeec5si16911323ejc.648.2022.07.26.09.49.25; Tue, 26 Jul 2022 09:49:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=l6rmovRJ; dkim=neutral (no key) header.i=@suse.cz; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239160AbiGZQrw (ORCPT + 99 others); Tue, 26 Jul 2022 12:47:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233883AbiGZQru (ORCPT ); Tue, 26 Jul 2022 12:47:50 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE0E925591; Tue, 26 Jul 2022 09:47:49 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 72373381C7; Tue, 26 Jul 2022 16:47:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1658854068; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UlF5ylZTd1i/4jYiq3gW88KJ0Xm5CfkpCnDnrAfO/I8=; b=l6rmovRJPsb56AguMBC6nvsJBGL/w1TMk1Nn9awTuUcWiCfq7gXGeUweTD6aj3HcDtbCFV pE8eu97caQQwaXx1rQIiBONKl1Dmr8gmH1DdAeAaBpbboTIRgwnUvU2yRKhisE7N1c6VjW OlfgEIGmdZxEFi1UwnBlD3xnjoEE1nk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1658854068; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UlF5ylZTd1i/4jYiq3gW88KJ0Xm5CfkpCnDnrAfO/I8=; b=dD3AtG0Sx3xeg5wJf/vSSKKTlO1wirZ66k3tIIWUdJT6w94+0JDn4jFKFag6hreAnNtRK9 aWTjCorsSg9t7dAg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 5060C13322; Tue, 26 Jul 2022 16:47:48 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id cjKgErQa4GLbdgAAMHmgww (envelope-from ); Tue, 26 Jul 2022 16:47:48 +0000 Date: Tue, 26 Jul 2022 18:42:50 +0200 From: David Sterba To: Mikhail Gavrilov Cc: Btrfs BTRFS , Linux List Kernel Mailing Subject: Re: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! Message-ID: <20220726164250.GE13489@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Mikhail Gavrilov , Btrfs BTRFS , Linux List Kernel Mailing References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_SOFTFAIL autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 26, 2022 at 05:32:54PM +0500, Mikhail Gavrilov wrote: > Hi guys. > Always with intensive writing on a btrfs volume, the message "BUG: > MAX_LOCKDEP_CHAIN_HLOCKS too low!" appears in the kernel logs. Increase the config value of LOCKDEP_CHAINS_BITS, default is 16, 18 tends to work.