From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from abb.hmeau.com (abb.hmeau.com [180.181.231.80]) (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 B058E372EC0; Wed, 22 Apr 2026 07:59:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=180.181.231.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776844770; cv=none; b=VjVGtwNVdgPOaLJR1OtCHJ1aXDluSjvKYYxteURZi27IRYBnBhh91rNDjZ1BUVGNyE6tbgeOfZTeAaXJfOaZXrT34thFt6bIsOLYGypNa0kmVHdF3a1YJBuvMisTe1WH81sFKEuV8kBmXoi6J8sQbwp0LAEbUaBUCBZc/6XpdzE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776844770; c=relaxed/simple; bh=QoJogCD3dsV/2F0cm69DkVVvChdFFb8fXAGPI5AeaKI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Q1F37RCzNF3Au5sJ6/+CWATeEQbAG1SWTmbeXlvs6IcTMfxqneW/WtRAlwepKC30m2t1ebWeTUHZhm//3ACfFvumEx2FWQlsiq/2vbo6LvsV5TQSteFU8hgFOjzyQOrn/0YAKHJTjRd06A5zXRbkwttNwz8JUcxWicO4a+g4fqg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gondor.apana.org.au; spf=pass smtp.mailfrom=gondor.apana.org.au; dkim=pass (2048-bit key) header.d=gondor.apana.org.au header.i=@gondor.apana.org.au header.b=iXH+AChG; arc=none smtp.client-ip=180.181.231.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gondor.apana.org.au header.i=@gondor.apana.org.au header.b="iXH+AChG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gondor.apana.org.au; s=h01; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:cc:to:subject:message-id:date: from:content-type:reply-to; bh=RKsQz6u8ayP/3L26MgNLWofkJm3W1LTrJTeC6jfaHIY=; b=iXH+AChGGdqd+UoRwbmc++bH3laUG3KIj90IutsaOgclyzpxVKonyn5kgxZ6KSMR1owk5BPTjs0 MV13yYfA1eMURsGQF5OVFZvND2wpBCG+wAYfm3k0TCHgSpX8VkLNTnbw9+Pa5Kei4f0VEGnbdLzfs qT5rYL9jOxxNUjSWHPZNQuqUDpxVBv/PUTXNWHuT0lV+HQjq9c3zSu31x5EsnGkeHsNSiruvPQDcj BxbCQJOC+xReCIYzCuiFLOO7BGeIU97ogKID/km8D0CPl3EIW5I4vpZx60yeM7I00+8QmVXJWKRuF FGe1vyKNW0bwQNmWm7aVJgymGgqffpQojhtQ==; Received: from loth.rohan.me.apana.org.au ([192.168.167.2]) by formenos.hmeau.com with smtp (Exim 4.96 #2 (Debian)) id 1wFSUT-007uVI-0V; Wed, 22 Apr 2026 15:59:22 +0800 Received: by loth.rohan.me.apana.org.au (sSMTP sendmail emulation); Wed, 22 Apr 2026 15:59:21 +0800 Date: Wed, 22 Apr 2026 15:59:21 +0800 From: Herbert Xu To: Uladzislau Rezki Cc: Thomas Graf , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Andrew Morton , Michal Hocko , Baoquan He , Alexander Potapenko , Andrey Ryabinin , Marco Elver , Michal Hocko , linux-mm@kvack.org Subject: Re: [linus:master] [mm] c6307674ed: BUG:sleeping_function_called_from_invalid_context_at_mm/vmalloc.c Message-ID: References: <202604211323.fac1b29e-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Apr 22, 2026 at 09:17:54AM +0200, Uladzislau Rezki wrote: > > since your GFP_ATOMIC context allocated chunk of memory using vmalloc() > sense kvfree() uses vfree(). The simplest fix to free via RCU. Why is kvmalloc returning vmalloc memory under GFP_ATOMIC? Is there a new GFP flag to tell it to not return vmalloc memory? This has been working for over a decade, what changed? Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt