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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 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" X-Stat-Signature: 4uy5dyejqjm1bty4y5mcco1r5jykd8t8 X-Rspamd-Queue-Id: ACD4E4000B X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783677897-787510 X-HE-Meta: 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 9vOQw2bh 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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--