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 063FB36AF5; Wed, 15 May 2024 05:18:21 +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=1715750302; cv=none; b=teLw24kChxPOkDUgwHEnlibmH1Amf0IQM+CH3Wog5v/ZqfV5U6FwVzgCCV4u4yku7YZUOeFFVqvAjuZ651wh51lMmfDaNagZLS3yEhjIOyr5BTXoFXJq9oBRF6+al0nAeLLnk96HkZ33lRwY0+yQqqBgFnJLcpMfqmQ8fDf2wL4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715750302; c=relaxed/simple; bh=pfGH+jZh96pLnw4AOvxaMZ9eBTglQ+T1HiwE848Yk3E=; h=From:To:Cc:Subject:References:Date:In-Reply-To:Message-ID: MIME-Version:Content-Type; b=Yb5/kZC1GEYPg3Lv4QNrRc2shmEhk/5IngfoNdjLEowQZhT8m7UArkT6R/IHtHH1Fl5mAOHJdBE6TnEncpwH4fcnO/mj77jmv0pmpR17kVsjrluiwRsTiPqqRz6GWFAV+f8mcaZ69iZtoZAQ7/szYuJpZKGyQwBE9mQMcs57LFk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=V2eiE7ru; 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="V2eiE7ru" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26FC3C116B1; Wed, 15 May 2024 05:18:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715750301; bh=pfGH+jZh96pLnw4AOvxaMZ9eBTglQ+T1HiwE848Yk3E=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=V2eiE7ruo0tGAGMwLasu7rmCOrV00BqN3Zt98BuZfOuqBuyWInZt0/vKTst7Ib/ft QnFFDt3al5+S1xF7UgnabhgchQsko+cMMErRtvGUbYmuKmfx8fCI9uqlMlur3cE0I0 H1nuno4m9bYoM2RUwqhmsGTLhgi6Nsok1S28dnfUKLeIahig+qACKWtuzAB1MVYeQE px+ASAGpyJ/gCnLu2FNElh4NmdmWlGn85yOIRrVXNgly7Sie+7dIMLwSewx+Lk9ZgJ 92qBxuc6LX/bT1rW0IbrB2REq3c2SZiuLMBpaSavGVJ5E56Nb/pF4K1NnUvai41dUU A2WWhovzEawbA== From: Kalle Valo To: Oleksandr Natalenko Cc: linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, "Linux regression tracking (Thorsten Leemhuis)" , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Peter Chiu , StanleyYP Wang , Linux regressions mailing list Subject: Re: [REGRESSION] MT7915E doesn't work any more with v6.9 References: <6061263.lOV4Wx5bFT@natalenko.name> Date: Wed, 15 May 2024 08:18:16 +0300 In-Reply-To: <6061263.lOV4Wx5bFT@natalenko.name> (Oleksandr Natalenko's message of "Wed, 15 May 2024 00:43:40 +0200") Message-ID: <87le4birfr.fsf@kernel.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Oleksandr Natalenko writes: > Hello Felix, Lorenzo et al. > > With v6.9 kernel the following card: > > 01:00.0 Unclassified device [0002]: MEDIATEK Corp. MT7915E 802.11ax > PCI Express Wireless Network Adapter [14c3:7915] > > doesn't work any more. Upon mt7915e module insertion the following splat happens: > > mt7915e 0000:01:00.0: enabling device (0000 -> 0002) > WARNING: CPU: 3 PID: 1648 at net/mac80211/main.c:794 > ieee80211_alloc_hw_nm+0x9a3/0x9f0 [mac80211] > Call Trace: > > mt76_alloc_device+0x24/0x290 [mt76 46e2c4f11be089903469a4d6045c71cb7842b4cd] > mt7915_mmio_probe+0x33/0x1d0 [mt7915e 9657e1926e619568545a08636674805d5e665c85] > mt7915_pci_probe+0xe1/0x3a0 [mt7915e 9657e1926e619568545a08636674805d5e665c85] > pci_device_probe+0xf0/0x2d0 > really_probe+0xde/0x3b0 > __driver_probe_device+0x78/0x110 > driver_probe_device+0x1f/0x130 > __driver_attach+0x91/0x1e0 > bus_for_each_dev+0x105/0x160 > bus_add_driver+0x137/0x270 > driver_register+0x72/0xd0 > mt7915_init+0x44/0xff0 [mt7915e 9657e1926e619568545a08636674805d5e665c85] > do_one_initcall+0x5b/0x310 > do_init_module+0x60/0x220 > init_module_from_file+0x89/0xe0 > idempotent_init_module+0x121/0x2b0 > __x64_sys_finit_module+0x5e/0xb0 > do_syscall_64+0x82/0x160 > entry_SYSCALL_64_after_hwframe+0x76/0x7e > mt7915e 0000:01:00.0: probe with driver mt7915e failed with error -12 > > and the card stays non-functional. Re-inserting the module triggers > the same behaviour. > > The following condition is triggered: > > 794 if (WARN_ON(!ops->add_chanctx || > 795 !ops->remove_chanctx || > 796 !ops->change_chanctx || > 797 !ops->assign_vif_chanctx || > 798 !ops->unassign_vif_chanctx)) > 799 return NULL; > > This worked with v6.8 and earlier just fine. Thanks for the report. I'll add this to regzbot for easier tracking: #regzbot introduced: v6.8..v6.9 ^ -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches