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 8E8E61A256A; Tue, 18 Jun 2024 12:40:42 +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=1718714442; cv=none; b=ZoFd75yYlKjKYyzE2nTX21MqzWsmaUyfgQVGbGzdF+Xzfgoqej/Sx+dvc9SZCDzWN0ChVhmA/+Awgn2SMzyAhDsHgO78MwGun936vYiJzYIg1quTllx827Knz+W10Q3mASxbkjd2ucehG7lqqwMBmImKi/e+e7iTP+hruk5jPyA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718714442; c=relaxed/simple; bh=t+VJMoHbS5aMzSdzqTh+8YeLJC/JfqfBNiQW1Ei54KY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PajOWP+3tEdwflSdiQMyjSKnW38Eb9tlvoGKB1rwPSYegT0DrcOBz8P9ZvWVhySyQC+vtBE5JZgPHCGQBa2Hj6CUjvK6SbWtL9gzoaZn+YrZMYq2ZfdRIWuRfMELAvFCHfHhq8prvAPBAMlTVLWsoNiJf5/bU23WGpK0c0i7DJA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZSAzaS6U; 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="ZSAzaS6U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2EA5DC4AF1D; Tue, 18 Jun 2024 12:40:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718714442; bh=t+VJMoHbS5aMzSdzqTh+8YeLJC/JfqfBNiQW1Ei54KY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZSAzaS6USsE2Ymep2pGf65BRACRUL5WMFdh1pnvn955vgWF1PZBmK5+RxjzuDeUSH jgUvDwhRPLwA9jcIS627hFh8D4n915ofaNHmumc/1Bmuws2Msmq5O71KfISrRqwFcA r342BsRlpFw+CTruclLVgr6LPgGPpzIgcFuQQiyQ5yokoN6WSOAuwo4xc9hetSLSGU 2Cc3okik6vFOOmD03TWr+yYRC3bVJFAwJPwLyWIVzBdWLD8Ioyas/iexdc0cuh/pE4 4Pi5PTxZ9/7R+QftfqTGn23zyQvn3hVYhjmpLxsZQd/r0/cL+dz0mNz4yokQO9+Zsr 2YLReZY2NoK+Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johannes Berg , syzbot+8830db5d3593b5546d2e@syzkaller.appspotmail.com, Sasha Levin , johannes@sipsolutions.net, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 13/29] wifi: mac80211: handle tasklet frames before stopping Date: Tue, 18 Jun 2024 08:39:39 -0400 Message-ID: <20240618124018.3303162-13-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240618124018.3303162-1-sashal@kernel.org> References: <20240618124018.3303162-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.1.94 Content-Transfer-Encoding: 8bit From: Johannes Berg [ Upstream commit 177c6ae9725d783f9e96f02593ce8fb2639be22f ] The code itself doesn't want to handle frames from the driver if it's already stopped, but if the tasklet was queued before and runs after the stop, then all bets are off. Flush queues before actually stopping, RX should be off at this point since all the interfaces are removed already, etc. Reported-by: syzbot+8830db5d3593b5546d2e@syzkaller.appspotmail.com Link: https://msgid.link/20240515135318.b05f11385c9a.I41c1b33a2e1814c3a7ef352cd7f2951b91785617@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/ieee80211_i.h | 2 ++ net/mac80211/main.c | 10 ++++++++-- net/mac80211/util.c | 2 ++ 3 files changed, 12 insertions(+), 2 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 3e14d5c9aa1b4..0d8a9bb925384 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1782,6 +1782,8 @@ void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, void ieee80211_configure_filter(struct ieee80211_local *local); u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); +void ieee80211_handle_queued_frames(struct ieee80211_local *local); + u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, u64 *cookie, gfp_t gfp); diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 6faba47b7b0ea..89771f0e0ae70 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -300,9 +300,8 @@ u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) BSS_CHANGED_ERP_SLOT; } -static void ieee80211_tasklet_handler(struct tasklet_struct *t) +void ieee80211_handle_queued_frames(struct ieee80211_local *local) { - struct ieee80211_local *local = from_tasklet(local, t, tasklet); struct sk_buff *skb; while ((skb = skb_dequeue(&local->skb_queue)) || @@ -327,6 +326,13 @@ static void ieee80211_tasklet_handler(struct tasklet_struct *t) } } +static void ieee80211_tasklet_handler(struct tasklet_struct *t) +{ + struct ieee80211_local *local = from_tasklet(local, t, tasklet); + + ieee80211_handle_queued_frames(local); +} + static void ieee80211_restart_work(struct work_struct *work) { struct ieee80211_local *local = diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 1088d90e355ba..08e6691cdc4a4 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2207,6 +2207,8 @@ u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, void ieee80211_stop_device(struct ieee80211_local *local) { + ieee80211_handle_queued_frames(local); + ieee80211_led_radio(local, false); ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); -- 2.43.0