From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8ECFFC5ACB2 for ; Wed, 15 Nov 2023 22:04:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344381AbjKOWEL (ORCPT ); Wed, 15 Nov 2023 17:04:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344394AbjKOWEJ (ORCPT ); Wed, 15 Nov 2023 17:04:09 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 186CA1A3 for ; Wed, 15 Nov 2023 14:04:06 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96227C433C7; Wed, 15 Nov 2023 22:04:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700085845; bh=vO4xCSNpNbvgu1fSpilANuWmKmfK15fFOMEKAtjuIkU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eswuHAJ9IRNYQ4/WVjAF3urb5Jng/9yhi2FsYVcSgjrv0PpGwdGP9ASAmy+RaMBeF zDLHEZOZdXy81GNtxlMSMuosWhdgwzIcHPj6FqFaSGyxZGeZAut/gAc8wjTk5/csfY 5+RHFcOlJHZHOWUnbXMjigskW7F6lABzgCF/TljQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jinjie Ruan , Sasha Levin Subject: [PATCH 5.4 075/119] misc: st_core: Do not call kfree_skb() under spin_lock_irqsave() Date: Wed, 15 Nov 2023 17:01:05 -0500 Message-ID: <20231115220134.969563078@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115220132.607437515@linuxfoundation.org> References: <20231115220132.607437515@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jinjie Ruan [ Upstream commit 4d08c3d12b61022501989f9f071514d2d6f77c47 ] It is not allowed to call kfree_skb() from hardware interrupt context or with hardware interrupts being disabled. So replace kfree_skb() with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile tested only. Fixes: 53618cc1e51e ("Staging: sources for ST core") Signed-off-by: Jinjie Ruan Link: https://lore.kernel.org/r/20230823035020.1281892-1-ruanjinjie@huawei.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/misc/ti-st/st_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c index 7d9e23aa0b926..c19460e7f0f16 100644 --- a/drivers/misc/ti-st/st_core.c +++ b/drivers/misc/ti-st/st_core.c @@ -15,6 +15,7 @@ #include #include +#include extern void st_kim_recv(void *, const unsigned char *, long); void st_int_recv(void *, const unsigned char *, long); @@ -423,7 +424,7 @@ static void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb) case ST_LL_AWAKE_TO_ASLEEP: pr_err("ST LL is illegal state(%ld)," "purging received skb.", st_ll_getstate(st_gdata)); - kfree_skb(skb); + dev_kfree_skb_irq(skb); break; case ST_LL_ASLEEP: skb_queue_tail(&st_gdata->tx_waitq, skb); @@ -432,7 +433,7 @@ static void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb) default: pr_err("ST LL is illegal state(%ld)," "purging received skb.", st_ll_getstate(st_gdata)); - kfree_skb(skb); + dev_kfree_skb_irq(skb); break; } @@ -486,7 +487,7 @@ void st_tx_wakeup(struct st_data_s *st_data) spin_unlock_irqrestore(&st_data->lock, flags); break; } - kfree_skb(skb); + dev_kfree_skb_irq(skb); spin_unlock_irqrestore(&st_data->lock, flags); } /* if wake-up is set in another context- restart sending */ -- 2.42.0