From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Sasha Levin <sashal@kernel.org>,
andersson@kernel.org, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, linux-remoteproc@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 6.2 23/37] remoteproc: stm32_rproc: Add mutex protection for workqueue
Date: Sun, 30 Apr 2023 22:59:31 -0400 [thread overview]
Message-ID: <20230501025945.3253774-23-sashal@kernel.org> (raw)
In-Reply-To: <20230501025945.3253774-1-sashal@kernel.org>
From: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
[ Upstream commit 35bdafda40cc343ad2ba2cce105eba03a70241cc ]
The workqueue may execute late even after remoteproc is stopped or
stopping, some resources (rpmsg device and endpoint) have been
released in rproc_stop_subdevices(), then rproc_vq_interrupt()
accessing these resources will cause kernel dump.
Call trace:
virtqueue_add_inbuf
virtqueue_add_inbuf
rpmsg_recv_single
rpmsg_recv_done
vring_interrupt
stm32_rproc_mb_vq_work
process_one_work
worker_thread
kthread
Suggested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20230331160634.3113031-1-arnaud.pouliquen@foss.st.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/remoteproc/stm32_rproc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 7d782ed9e5896..f618405cf4200 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -287,8 +287,16 @@ static void stm32_rproc_mb_vq_work(struct work_struct *work)
struct stm32_mbox *mb = container_of(work, struct stm32_mbox, vq_work);
struct rproc *rproc = dev_get_drvdata(mb->client.dev);
+ mutex_lock(&rproc->lock);
+
+ if (rproc->state != RPROC_RUNNING)
+ goto unlock_mutex;
+
if (rproc_vq_interrupt(rproc, mb->vq_id) == IRQ_NONE)
dev_dbg(&rproc->dev, "no message found in vq%d\n", mb->vq_id);
+
+unlock_mutex:
+ mutex_unlock(&rproc->lock);
}
static void stm32_rproc_mb_callback(struct mbox_client *cl, void *data)
--
2.39.2
next prev parent reply other threads:[~2023-05-01 3:10 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-01 2:59 [PATCH AUTOSEL 6.2 01/37] drm/displayid: add displayid_get_header() and check bounds better Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 02/37] drm/amd/display: populate subvp cmd info only for the top pipe Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 03/37] drm/amd/display: Correct DML calculation to align HW formula Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 04/37] drm/amd/display: enable DPG when disabling plane for phantom pipe Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 05/37] platform/x86: x86-android-tablets: Add Acer Iconia One 7 B1-750 data Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 06/37] drm/amd/display: Enable HostVM based on rIOMMU active Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 07/37] drm/amd/display: Use DC_LOG_DC in the trasform pixel function Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 08/37] regmap: cache: Return error in cache sync operations for REGCACHE_NONE Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 09/37] remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 10/37] arm64: dts: qcom: msm8996: Add missing DWC3 quirks Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 11/37] accel/habanalabs: postpone mem_mgr IDR destruction to hpriv_release() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 12/37] media: imx-jpeg: Bounds check sizeimage access Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 13/37] media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 14/37] media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 15/37] media: pvrusb2: VIDEO_PVRUSB2 depends on DVB_CORE to use dvb_* symbols Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 16/37] ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 17/37] drm/rockchip: dw_hdmi: cleanup drm encoder during unbind Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 18/37] memstick: r592: Fix UAF bug in r592_remove due to race condition Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 19/37] arm64: dts: imx8mq-librem5: Remove dis_u3_susphy_quirk from usb_dwc3_0 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 20/37] firmware: arm_sdei: Fix sleep from invalid context BUG Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 21/37] ACPI: EC: Fix oops when removing custom query handlers Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 22/37] drm/amd/display: fixed dcn30+ underflow issue Sasha Levin
2023-05-01 2:59 ` Sasha Levin [this message]
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 24/37] drm/tegra: Avoid potential 32-bit integer overflow Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 25/37] drm/msm/dp: Clean up handling of DP AUX interrupts Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 26/37] ACPICA: Avoid undefined behavior: applying zero offset to null pointer Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 27/37] ACPICA: ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 28/37] arm64: dts: qcom: sdm845-polaris: Drop inexistent properties Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 29/37] irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 30/37] media: cros-ec-cec: Don't exit early in .remove() callback Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 31/37] ACPI: video: Remove desktops without backlight DMI quirks Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 32/37] drm/amd/display: Correct DML calculation to follow HW SPEC Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 33/37] drm/amd: Fix an out of bounds error in BIOS parser Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 34/37] drm/amdgpu: Fix sdma v4 sw fini error Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 35/37] media: Prefer designated initializers over memset for subdev pad ops Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 36/37] drm/amdgpu: Enable IH retry CAM on GFX9 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 37/37] media: mediatek: vcodec: Fix potential array out-of-bounds in decoder queue_setup Sasha Levin
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