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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Lucas Tanure <tanureal@opensource.cirrus.com>,
	Mark Brown <broonie@kernel.org>, Sasha Levin <sashal@kernel.org>,
	patches@opensource.cirrus.com, alsa-devel@alsa-project.org
Subject: [PATCH AUTOSEL 5.13 03/12] ASoC: wm_adsp: Let soc_cleanup_component_debugfs remove debugfs
Date: Mon, 16 Aug 2021 20:35:27 -0400	[thread overview]
Message-ID: <20210817003536.83063-3-sashal@kernel.org> (raw)
In-Reply-To: <20210817003536.83063-1-sashal@kernel.org>

From: Lucas Tanure <tanureal@opensource.cirrus.com>

[ Upstream commit acbf58e530416e167c3b323111f4013d9f2b0a7d ]

soc_cleanup_component_debugfs will debugfs_remove_recursive
the component->debugfs_root, so adsp doesn't need to also
remove the same entry.
By doing that adsp also creates a race with core component,
which causes a NULL pointer dereference

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210728104416.636591-1-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/wm_adsp.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index cef05d81c39b..6698b5343974 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -746,7 +746,6 @@ static void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
 static void wm_adsp2_cleanup_debugfs(struct wm_adsp *dsp)
 {
 	wm_adsp_debugfs_clear(dsp);
-	debugfs_remove_recursive(dsp->debugfs_root);
 }
 #else
 static inline void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
-- 
2.30.2


  parent reply	other threads:[~2021-08-17  0:35 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-17  0:35 [PATCH AUTOSEL 5.13 01/12] ASoC: rt5682: Adjust headset volume button threshold Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 02/12] ASoC: component: Remove misplaced prefix handling in pin control functions Sasha Levin
2021-08-30 12:49   ` Pavel Machek
2021-08-17  0:35 ` Sasha Levin [this message]
2021-08-18 13:15   ` [PATCH AUTOSEL 5.13 03/12] ASoC: wm_adsp: Let soc_cleanup_component_debugfs remove debugfs Charles Keepax
2021-08-19 13:26     ` Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 04/12] platform/x86: Add and use a dual_accel_detect() helper Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 05/12] ARC: Fix CONFIG_STACKDEPOT Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 06/12] netfilter: ipset: Limit the maximal range of consecutive elements to add/delete Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 07/12] netfilter: conntrack: collect all entries in one cycle Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 08/12] once: Fix panic when module unload Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 09/12] io_uring: rsrc ref lock needs to be IRQ safe Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 10/12] blk-iocost: fix lockdep warning on blkcg->lock Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 11/12] ovl: fix uninitialized pointer read in ovl_lookup_real_one() Sasha Levin
2021-08-17  0:35 ` [PATCH AUTOSEL 5.13 12/12] net: mscc: Fix non-GPL export of regmap APIs Sasha Levin

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