From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 119273DE42B for ; Fri, 10 Jul 2026 10:04:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783677898; cv=none; b=ZvRRNiPrfa9z2oXQ+6XfYYyHDWaabvH8TPlgjrkX/2mbrj1eUzIfcg2qLTgl7RtPAsd2VNQJlBWPlfPkVRXEu+Iy1+FjahSfYBbDcmotR0030dv8JttmaQ8Xe+mscxNBFkY6/KLRIS99OnKw7x1ZsyjtQFXjkcURjBGsPbgWkxY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783677898; c=relaxed/simple; bh=bgZnDAnuIUe+VsLcYkmYHoPuByp6JTttJ+s/wN6QkWs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Ia/BPgUCNt606lPVr/O3dq6M98jvdgT/d5aVUhXCsxvbpiutzUpXcaka2C1+JJ147wtqbpBNSZ7Ut0nK9O/WLD7Uc3kZCVWOU7L1juxBnfvjbLUZOjESFByqKyagW1oSfSWy98nsyfWNlUPLncQnpnpHqohqMTiicZpeOJYXshw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ie60D7jw; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ie60D7jw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29F581F000E9; Fri, 10 Jul 2026 10:04:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783677896; bh=bgZnDAnuIUe+VsLcYkmYHoPuByp6JTttJ+s/wN6QkWs=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Ie60D7jwHXr0cwpVpB39AsLHpinVOftBTuCsLvaFpZyd/bAHic2eYaQzzZ7GyrRcX DrVQB+d5iuEN2nMy/oHP2o2aHmTEBM+zPzyMvxghrQMxRftKjwfVZYhTz4dwt6eU9M DzsbXPdc8iGPiphuEaqBfob5oK5uocTxYzxLfqGvpvtpl2EDsNiG4NrC6hYD6ugexS xoQiHWM8rmkwh22ZhZM8HZTyvDyvT9sqfCdgdjp8ghrskm5NP+Vy5OH/gj07yVUk+k B8Z8eWFBtRK4ZXBmmFdd0r6SFM0yBL6yMgatt+C27DMK8YN4D4VQuzp2PyU+L7AOqM jRYQ+xP65CmVw== Message-ID: <292ffec0-6a6b-451d-8977-3a5217c65d2c@kernel.org> Date: Fri, 10 Jul 2026 19:04:50 +0900 Precedence: bulk X-Mailing-List: oe-lkp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [harry:kmalloc-no-objext-rfc-v1r1] [mm/slab] 6bc21472e7: BUG:kernel_NULL_pointer_dereference,address To: Oliver Sang Cc: oe-lkp@lists.linux.dev, lkp@intel.com, Danielle Constantino , Shakeel Butt , linux-mm@kvack.org References: <202607091002.cdfe5a08-lkp@intel.com> Content-Language: en-US From: Harry Yoo In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------V6m3WAHSMa9Jv1iiktisZNM2" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------V6m3WAHSMa9Jv1iiktisZNM2 Content-Type: multipart/mixed; boundary="------------iPxkI0pAlY3tmBSQs0WgtLW5"; protected-headers="v1" From: Harry Yoo To: Oliver Sang Cc: oe-lkp@lists.linux.dev, lkp@intel.com, Danielle Constantino , Shakeel Butt , linux-mm@kvack.org Message-ID: <292ffec0-6a6b-451d-8977-3a5217c65d2c@kernel.org> Subject: Re: [harry:kmalloc-no-objext-rfc-v1r1] [mm/slab] 6bc21472e7: BUG:kernel_NULL_pointer_dereference,address References: <202607091002.cdfe5a08-lkp@intel.com> In-Reply-To: --------------iPxkI0pAlY3tmBSQs0WgtLW5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 7/10/26 4:21 PM, Oliver Sang wrote: > hi, Harry Yoo, Hi Oliver, > On Thu, Jul 09, 2026 at 06:26:54PM +0900, Harry Yoo wrote: >> On 7/9/26 5:48 PM, kernel test robot wrote: >>> >>> >>> Hello, >>> >>> kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,addres= s" on: >>> >>> commit: 6bc21472e7eb9f8c771ffdf86266aa6d9dcb1dac ("mm/slab: prevent u= nbounded recursion due to obj_exts in free path") >>> https://git.kernel.org/cgit/linux/kernel/git/harry/linux.git kmalloc-= no-objext-rfc-v1r1 >> >> This is v1r1, and I posted v1r3, because it was bootstrapping sheaves >> for normal kmalloc only. This crashed the kernel but was fixed in v1r2= =2E >> >> Apologies for the confusion, I discovered bugs after exposing it in my= >> tree (force pushing isn't great, you know...) I should probably have >> deleted that broken one, though. :) >> >> Will be posting v2 that fixes false warnings w/ memalloc profiling >> debug shortly. >=20 > thanks a lot for information! sorry that our bot still cannot analyze b= ranch > version so far. No worries :) Is there any way to tell the bot that a branch is broken, e.g.) deleting a broken branch from the repository? > we will check the latest branch in your repo before reporting > in the future. Thanks! --=20 Cheers, Harry / Hyeonggon --------------iPxkI0pAlY3tmBSQs0WgtLW5-- --------------V6m3WAHSMa9Jv1iiktisZNM2 Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQQQ1ub6gR5ogjaKRmOGXBN6rc5S1gUCalDDwgAKCRCGXBN6rc5S 1rNtAQDsPHuMpYN3I8TXdZ/lV71OWDWJ+P6u+SAkNGwh1T3ITAEAw/YZZDhQB4jz 0g+m/gEmAqFtRBolTTJBFnGyh55RIw8= =ppkB -----END PGP SIGNATURE----- --------------V6m3WAHSMa9Jv1iiktisZNM2--