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 871143A5E6C; Sat, 17 Oct 2026 16:12:50 +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=1792253578; cv=none; b=TIIBBN9mmN2uc68TFCCpdEHGGjX+pDoBLsodfs3MlMws4ARjG6S6JvirQl78VQNjgKLdzWjMJH3jUHPLUbJxHsHVQxmYkwSZZspEGF/IkaMIxnZKh7V9w+nx2ioPzGAxsTxtWrDGT+a7zSxN6o3YlNw9aIrOKq086uNVHJ3IOI8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792253578; c=relaxed/simple; bh=5EKreQpsa0RO8fOMBYQunZMYBVdJ3JyjbpWT3/01yQc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Jp7Y/3/yuXnlG96+2htn5E7AjCoW8jbD+RVA6MNMQcviezJAC9KptjL6iYrceSFlDniyahU+OiFdwuydn3z1i7cngUdCq4R5FBCHq6Fe9cg1BwME3HVF83gZ82tho25+2OsksMJ9v5F1Jw+M0W8SRM9eRDZZkrKtmKEaIQSyVd0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=N2wbAbFy; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="N2wbAbFy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CAE4E1F000C6; Sat, 17 Oct 2026 16:12:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792253570; bh=CqU5FV0YEveDSSFElKi3s8JKHckQQ4UdVqt0KpHKQeI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=N2wbAbFy8OUdvOFcsC4MUVEU1N9/p2kcfXmTi5rUiTOC+ZJB5WDuOtEfAdoBIgZlB Vbd5qU1ChclTLa7vPT88i8/iJ42yHpeshpDeIJmWzYgDywMFVN8zLKbjv5/Ys8pHMg qfzZvsr766Mw2Ou6vrNKsUshlgGCOD5+qYWEgeOA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Daniel Pawlik , Matteo Croce , Lorenzo Bianconi , Felix Fietkau , Sasha Levin Subject: [PATCH 6.12 155/869] wifi: mt76: wed: use proper wed reference in mt76 wed driver callabacks Date: Sat, 17 Oct 2026 17:49:56 +0200 Message-ID: <20261017160041.015819896@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160036.979869304@linuxfoundation.org> References: <20261017160036.979869304@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lorenzo Bianconi [ Upstream commit 385aab8fccd7a8746b9f1a17f3c1e38498a14bc7 ] MT7996 driver can use both wed and wed_hif2 devices to offload traffic from/to the wireless NIC. In the current codebase we assume to always use the primary wed device in wed callbacks resulting in the following crash if the hw runs wed_hif2 (e.g. 6GHz link). [ 297.455876] Unable to handle kernel read from unreadable memory at virtual address 000000000000080a [ 297.464928] Mem abort info: [ 297.467722] ESR = 0x0000000096000005 [ 297.471461] EC = 0x25: DABT (current EL), IL = 32 bits [ 297.476766] SET = 0, FnV = 0 [ 297.479809] EA = 0, S1PTW = 0 [ 297.482940] FSC = 0x05: level 1 translation fault [ 297.487809] Data abort info: [ 297.490679] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 297.496156] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 297.501196] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 297.506500] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000107480000 [ 297.512927] [000000000000080a] pgd=08000001097fb003, p4d=08000001097fb003, pud=08000001097fb003, pmd=0000000000000000 [ 297.523532] Internal error: Oops: 0000000096000005 [#1] SMP [ 297.715393] CPU: 2 UID: 0 PID: 45 Comm: kworker/u16:2 Tainted: G O 6.12.50 #0 [ 297.723908] Tainted: [O]=OOT_MODULE [ 297.727384] Hardware name: Banana Pi BPI-R4 (2x SFP+) (DT) [ 297.732857] Workqueue: nf_ft_offload_del nf_flow_rule_route_ipv6 [nf_flow_table] [ 297.740254] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 297.747205] pc : mt76_wed_offload_disable+0x64/0xa0 [mt76] [ 297.752688] lr : mtk_wed_flow_remove+0x58/0x80 [ 297.757126] sp : ffffffc080fe3ae0 [ 297.760430] x29: ffffffc080fe3ae0 x28: ffffffc080fe3be0 x27: 00000000deadbef7 [ 297.767557] x26: ffffff80c5ebca00 x25: 0000000000000001 x24: ffffff80c85f4c00 [ 297.774683] x23: ffffff80c1875b78 x22: ffffffc080d42cd0 x21: ffffffc080660018 [ 297.781809] x20: ffffff80c6a076d0 x19: ffffff80c6a043c8 x18: 0000000000000000 [ 297.788935] x17: 0000000000000000 x16: 0000000000000001 x15: 0000000000000000 [ 297.796060] x14: 0000000000000019 x13: ffffff80c0ad8ec0 x12: 00000000fa83b2da [ 297.803185] x11: ffffff80c02700c0 x10: ffffff80c0ad8ec0 x9 : ffffff81fef96200 [ 297.810311] x8 : ffffff80c02700c0 x7 : ffffff80c02700d0 x6 : 0000000000000002 [ 297.817435] x5 : 0000000000000400 x4 : 0000000000000000 x3 : 0000000000000000 [ 297.824561] x2 : 0000000000000001 x1 : 0000000000000800 x0 : ffffff80c6a063c8 [ 297.831686] Call trace: [ 297.834123] mt76_wed_offload_disable+0x64/0xa0 [mt76] [ 297.839254] mtk_wed_flow_remove+0x58/0x80 [ 297.843342] mtk_flow_offload_cmd+0x434/0x574 [ 297.847689] mtk_wed_setup_tc_block_cb+0x30/0x40 [ 297.852295] nf_flow_offload_ipv6_hook+0x7f4/0x964 [nf_flow_table] [ 297.858466] nf_flow_rule_route_ipv6+0x438/0x4a4 [nf_flow_table] [ 297.864463] process_one_work+0x174/0x300 [ 297.868465] worker_thread+0x278/0x430 [ 297.872204] kthread+0xd8/0xdc [ 297.875251] ret_from_fork+0x10/0x20 [ 297.878820] Code: 928b5ae0 8b000273 91400a60 f943fa61 (79401421) [ 297.884901] ---[ end trace 0000000000000000 ]--- Fix the issue detecting the proper wed reference to use running wed callabacks. Fixes: 83eafc9251d6 ("wifi: mt76: mt7996: add wed tx support") Tested-by: Daniel Pawlik Tested-by: Matteo Croce Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20251008-wed-fixes-v1-1-8f7678583385@kernel.org Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt76.h | 9 +++++++++ drivers/net/wireless/mediatek/mt76/mt7996/mmio.c | 1 + drivers/net/wireless/mediatek/mt76/wed.c | 10 +++++----- include/linux/soc/mediatek/mtk_wed.h | 1 + 4 files changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index ffcd4509dfcae..8addbffa97c55 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -1161,6 +1161,15 @@ static inline int mt76_wed_dma_setup(struct mt76_dev *dev, struct mt76_queue *q, for (i = 0; i < ARRAY_SIZE((dev)->q_rx); i++) \ if ((dev)->q_rx[i].ndesc) +static inline struct mt76_dev *mt76_wed_to_dev(struct mtk_wed_device *wed) +{ +#ifdef CONFIG_NET_MEDIATEK_SOC_WED + if (wed->wlan.hif2) + return container_of(wed, struct mt76_dev, mmio.wed_hif2); +#endif /* CONFIG_NET_MEDIATEK_SOC_WED */ + return container_of(wed, struct mt76_dev, mmio.wed); +} + struct mt76_dev *mt76_alloc_device(struct device *pdev, unsigned int size, const struct ieee80211_ops *ops, const struct mt76_driver_ops *drv_ops); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c index 01d4b54a1acc6..11e9c71e9b17a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c @@ -410,6 +410,7 @@ int mt7996_mmio_wed_init(struct mt7996_dev *dev, void *pdev_ptr, wed->wlan.nbuf = MT7996_HW_TOKEN_SIZE; wed->wlan.token_start = MT7996_TOKEN_SIZE - wed->wlan.nbuf; + wed->wlan.hif2 = hif2; wed->wlan.amsdu_max_subframes = 8; wed->wlan.amsdu_max_len = 1536; diff --git a/drivers/net/wireless/mediatek/mt76/wed.c b/drivers/net/wireless/mediatek/mt76/wed.c index f89e4537555c5..6798b56bc5554 100644 --- a/drivers/net/wireless/mediatek/mt76/wed.c +++ b/drivers/net/wireless/mediatek/mt76/wed.c @@ -8,7 +8,7 @@ void mt76_wed_release_rx_buf(struct mtk_wed_device *wed) { - struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + struct mt76_dev *dev = mt76_wed_to_dev(wed); int i; for (i = 0; i < dev->rx_token_size; i++) { @@ -31,8 +31,8 @@ EXPORT_SYMBOL_GPL(mt76_wed_release_rx_buf); #ifdef CONFIG_NET_MEDIATEK_SOC_WED u32 mt76_wed_init_rx_buf(struct mtk_wed_device *wed, int size) { - struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); struct mtk_wed_bm_desc *desc = wed->rx_buf_ring.desc; + struct mt76_dev *dev = mt76_wed_to_dev(wed); struct mt76_queue *q = &dev->q_rx[MT_RXQ_MAIN]; int i, len = SKB_WITH_OVERHEAD(q->buf_size); struct mt76_txwi_cache *t = NULL; @@ -84,7 +84,7 @@ EXPORT_SYMBOL_GPL(mt76_wed_init_rx_buf); int mt76_wed_offload_enable(struct mtk_wed_device *wed) { - struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + struct mt76_dev *dev = mt76_wed_to_dev(wed); spin_lock_bh(&dev->token_lock); dev->token_size = wed->wlan.token_start; @@ -168,7 +168,7 @@ EXPORT_SYMBOL_GPL(mt76_wed_dma_setup); void mt76_wed_offload_disable(struct mtk_wed_device *wed) { - struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + struct mt76_dev *dev = mt76_wed_to_dev(wed); spin_lock_bh(&dev->token_lock); dev->token_size = dev->drv->token_size; @@ -178,7 +178,7 @@ EXPORT_SYMBOL_GPL(mt76_wed_offload_disable); void mt76_wed_reset_complete(struct mtk_wed_device *wed) { - struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + struct mt76_dev *dev = mt76_wed_to_dev(wed); complete(&dev->mmio.wed_reset_complete); } diff --git a/include/linux/soc/mediatek/mtk_wed.h b/include/linux/soc/mediatek/mtk_wed.h index a476648858a66..9b569b1300b93 100644 --- a/include/linux/soc/mediatek/mtk_wed.h +++ b/include/linux/soc/mediatek/mtk_wed.h @@ -154,6 +154,7 @@ struct mtk_wed_device { bool wcid_512; bool hw_rro; bool msi; + bool hif2; u16 token_start; unsigned int nbuf; -- 2.53.0