July 2020 - Alsa-devel - mailman.alsa-project.org

[PATCH] ASoC: qcom: qdsp6: Use the defined variable to clean code
by Tang Bin 17 Jul '20

17 Jul '20

Use the defined variable "dev" to make the code cleaner. Signed-off-by: Zhang Shengju <zhangshengju(a)cmss.chinamobile.com> Signed-off-by: Tang Bin <tangbin(a)cmss.chinamobile.com> --- sound/soc/qcom/qdsp6/q6adm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/qcom/qdsp6/q6adm.c b/sound/soc/qcom/qdsp6/q6adm.c index da242515e..2ec868b2d 100644 --- a/sound/soc/qcom/qdsp6/q6adm.c +++ b/sound/soc/qcom/qdsp6/q6adm.c @@ -588,12 +588,12 @@ static int q6adm_probe(struct apr_device *adev) struct device *dev = &adev->dev; struct q6adm *adm; - adm = devm_kzalloc(&adev->dev, sizeof(*adm), GFP_KERNEL); + adm = devm_kzalloc(dev, sizeof(*adm), GFP_KERNEL); if (!adm) return -ENOMEM; adm->apr = adev; - dev_set_drvdata(&adev->dev, adm); + dev_set_drvdata(dev, adm); adm->dev = dev; q6core_get_svc_api_info(adev->svc_id, &adm->ainfo); mutex_init(&adm->lock); -- 2.20.1.windows.1

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[PATCH v2] ASoC: meson: fixes the missed kfree() for axg_card_add_tdm_loopback
by Jing Xiangfeng 17 Jul '20

17 Jul '20

axg_card_add_tdm_loopback() misses to call kfree() in an error path. We can use devm_kasprintf() to fix the issue, also improve maintainability. So use it instead. Fixes: c84836d7f650 ("ASoC: meson: axg-card: use modern dai_link style") Signed-off-by: Jing Xiangfeng <jingxiangfeng(a)huawei.com> --- sound/soc/meson/axg-card.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c index 89f7f64747cd..47f2d93224fe 100644 --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -116,7 +116,7 @@ static int axg_card_add_tdm_loopback(struct snd_soc_card *card, lb = &card->dai_link[*index + 1]; - lb->name = kasprintf(GFP_KERNEL, "%s-lb", pad->name); + lb->name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-lb", pad->name); if (!lb->name) return -ENOMEM; -- 2.17.1

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[PATCH] ASoC: soc-dai.h: don't use discriminatory terms for comment
by Kuninori Morimoto 17 Jul '20

17 Jul '20

From: Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com> soc-dai is using discriminatory terms for comment. This patch renames "slave" to "secondary", thus we can keep M/S initials. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com> --- include/sound/soc-dai.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 6cb25e8f9b20..09ab2d542639 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -76,12 +76,12 @@ struct snd_compr_stream; * * This is wrt the codec, the inverse is true for the interface * i.e. if the codec is clk and FRM master then the interface is - * clk and frame slave. + * clk and frame secondary. */ #define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */ -#define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */ -#define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */ -#define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */ +#define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk secondary & FRM master */ +#define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame secondary */ +#define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM secondary */ #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 -- 2.25.1

2 1

[PATCH] ASoC: qcom: qdsp6: Use IS_ERR() instead of IS_ERR_OR_NULL()
by Tang Bin 17 Jul '20

17 Jul '20

In the function q6adm_open(), q6adm_alloc_copp() doesn't return NULL. Thus use IS_ERR() to validate the returned value instead of IS_ERR_OR_NULL(). And delete the extra line. Signed-off-by: Zhang Shengju <zhangshengju(a)cmss.chinamobile.com> Signed-off-by: Tang Bin <tangbin(a)cmss.chinamobile.com> --- sound/soc/qcom/qdsp6/q6adm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/qcom/qdsp6/q6adm.c b/sound/soc/qcom/qdsp6/q6adm.c index d8069864b..44ac0728f 100644 --- a/sound/soc/qcom/qdsp6/q6adm.c +++ b/sound/soc/qcom/qdsp6/q6adm.c @@ -403,7 +403,7 @@ struct q6copp *q6adm_open(struct device *dev, int port_id, int path, int rate, spin_lock_irqsave(&adm->copps_list_lock, flags); copp = q6adm_alloc_copp(adm, port_id); - if (IS_ERR_OR_NULL(copp)) { + if (IS_ERR(copp)) { spin_unlock_irqrestore(&adm->copps_list_lock, flags); return ERR_CAST(copp); } @@ -419,7 +419,6 @@ struct q6copp *q6adm_open(struct device *dev, int port_id, int path, int rate, copp->bit_width = bit_width; copp->app_type = app_type; - ret = q6adm_device_open(adm, copp, port_id, path, topology, channel_mode, bit_width, rate); if (ret < 0) { -- 2.20.1.windows.1

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wm8962: error at soc_component_read_no_lock
by Fabio Estevam 17 Jul '20

17 Jul '20

Hi, Running linux-next 20200714 on a imx6q sabresd I see the following errors: wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16 wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16 input: WM8962 Beep Generator as /devices/platform/soc/2100000.bus/21a0000.i2c/i2c-0/0-001a/input/input3 wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16 wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16 Despite these errors, the codec probes fine. What is the correct way to avoid such errors? Thanks, Fabio Estevam

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[PATCH v4 00/23] Add support for Tegra210 Audio
by Sameer Pujar 17 Jul '20

17 Jul '20

Overview ======== Audio Processing Engine (APE) comprises of Audio DMA (ADMA) and Audio Hub (AHUB) unit. AHUB is a collection of hardware accelerators for audio pre-processing and post-processing. It also includes a programmable full crossbar for routing audio data across these accelerators. This series exposes some of these below mentioned HW devices as ASoC components for Tegra platforms from Tegra210 onwards. * ADMAIF : The interface between ADMA and AHUB * XBAR : Crossbar for routing audio samples across various modules * I2S : Inter-IC Sound Controller * DMIC : Digital Microphone * DSPK : Digital Speaker Following is the summary of current series. * Add YAML DT binding documentation for above mentioned modules. * Helper function for ACIF programming is exposed for Tegra210 and later. * Add ASoC driver components for each of the above modules. * Add DT entries for above components for Tegra210, Tegra186 and Tegra194. * Enable these components for Jetson Nano/TX1/TX2/Xavier * Enhance simple-card DPCM driver to suit Tegra Audio applications with few changes in core. * To begin with, enable sound card support for Tegra210 based platforms like Jetson Nano/TX1. Sound card support for platforms based on Tegra186 and later will be subsequently added which can re-use all of the above components. Changelog ========= v3 -> v4 -------- * [1/23] "ASoC: dt-bindings: tegra: Add DT bindings for Tegra210" - Removed multiple examples and retained one example per doc - Fixed as per inputs on the previous series - Tested bindings with 'make dt_binding_check/dtbs_check' * [2/23] "ASoC: tegra: Add support for CIF programming" - No change * Common changes (for patch [3/10] to [7/10]) - Mixer control overrides, for PCM parameters (rate, channel, bits), in each driver are dropped. - Updated routing as per DPCM usage - Minor changes related to formatting * New changes (patch [8/23] to [18/23] and patch [23/23]) - Based on discussions in following threads DPCM is used for Tegra Audio. https://lkml.org/lkml/2020/2/20/91 https://lkml.org/lkml/2020/4/30/519 - The simple-card driver is used for Tegra Audio and accordingly some enhancements are made in simple-card and core drivers. - Patch [8/23] to [18/23] are related to simple-card and core changes. - Patch [23/23] adds sound card support to realize complete audio path. This is based on simple-card driver with proposed enhancements. - Re-ordered patches depending on above v2 -> v3 -------- * [1/10] "dt-bindings: sound: tegra: add DT binding for AHUB - Updated licence - Removed redundancy w.r.t items/const/enum - Added constraints wherever needed with "pattern" property * [2/10] "ASoC: tegra: add support for CIF programming" - Removed tegra_cif.c - Instead added inline helper function in tegra_cif.h * common changes (for patch [3/10] to [7/10]) - Replace LATE system calls with Normal sleep - Remove explicit RPM suspend in driver remove() call - Use devm_kzalloc() instead of devm_kcalloc() for single element - Replace 'ret' with 'err' for better reading - Consistent error printing style across drivers - Minor formating fixes * [8/10] "arm64: tegra: add AHUB components for few Tegra chips" - no change * [9/10] "arm64: tegra: enable AHUB modules for few Tegra chips" - no change * [10/10] "arm64: defconfig: enable AHUB components for Tegra210 and later" (New patch) - Enables ACONNECT and AHUB components. With this AHUB and components are registered with ASoC core. v1 -> v2 -------- * [1/9] "dt-bindings: sound: tegra: add DT binding for AHUB" - no changes * [2/9] "ASoC: tegra: add support for CIF programming" - removed CIF programming changes for legacy chips. - this patch now exposes helper function for CIF programming, which can be used on Tegra210 later. - later tegra_cif.c can be extended for legacy chips as well. - updated commit message accordingly * [3/9] "ASoC: tegra: add Tegra210 based DMIC driver" - removed unnecessary initialization of 'ret' in probe() * [4/9] "ASoC: tegra: add Tegra210 based I2S driver" - removed unnecessary initialization of 'ret' in probe() - fixed indentation - added consistent bracing for if-else clauses - updated 'rx_fifo_th' type to 'unsigned int' - used BIT() macro for defines like '1 << {x}' in tegra210_i2s.h * [5/9] "ASoC: tegra: add Tegra210 based AHUB driver" - used of_device_get_match_data() to get 'soc_data' and removed explicit of_match_device() - used devm_platform_ioremap_resource() and removed explicit platform_get_resource() - fixed indentation for devm_snd_soc_register_component() - updated commit message - updated commit message to reflect compatible binding for Tegra186 and Tegra194. * [6/9] "ASoC: tegra: add Tegra186 based DSPK driver" - removed unnecessary initialization of 'ret' in probe() - updated 'max_th' to 'unsigned int' - shortened lengthy macro names to avoid wrapping in tegra186_dspk_wr_reg() and to be consistent * [7/9] "ASoC: tegra: add Tegra210 based ADMAIF driver" - used of_device_get_match_data() and removed explicit of_match_device() - used BIT() macro for defines like '1 << {x}' in tegra210_admaif.h - updated commit message to reflect compatible binding for Tegra186 and Tegra194. * [8/9] "arm64: tegra: add AHUB components for few Tegra chips" - no change * [9/9] "arm64: tegra: enable AHUB modules for few Tegra chips" - no change * common changes for patch [3/9] to [7/9] - sorted headers in alphabetical order - moved MODULE_DEVICE_TABLE() right below *_of_match table - removed macro DRV_NAME - removed explicit 'owner' field from platform_driver structure - added 'const' to snd_soc_dai_ops structure ================== Sameer Pujar (23): ASoC: dt-bindings: tegra: Add DT bindings for Tegra210 ASoC: tegra: Add support for CIF programming ASoC: tegra: Add Tegra210 based DMIC driver ASoC: tegra: Add Tegra210 based I2S driver ASoC: tegra: Add Tegra210 based AHUB driver ASoC: tegra: Add Tegra186 based DSPK driver ASoC: tegra: Add Tegra210 based ADMAIF driver ASoC: soc-core: Fix component name_prefix parsing ASoC: simple-card: Use of_node and DAI names for DAI link names ASoC: simple-card: Wrong daifmt for CPU end of DPCM DAI link ASoC: simple-card: Loop over all children for 'mclk-fs' ASoC: simple-card: Support DPCM DAI link with multiple Codecs ASoC: simple-card: DPCM DAI link direction as per DAI capability ASoC: soc-core: Probe auxiliary component before others ASoC: soc-core: Identify 'no_pcm' DAI links for DPCM ASoC: soc-pcm: Get all BEs along DAPM path ASoC: dt-bindings: simple-card: Add compatible for component chaining ASoC: simple-card: Add support for component chaining arm64: defconfig: Build AHUB component drivers arm64: defconfig: Enable CONFIG_TEGRA210_ADMA arm64: tegra: Add DT binding for AHUB components arm64: tegra: Enable AHUB components on few Tegra platforms arm64: tegra: Add support for APE sound card on Jetson Nano and TX1 .../bindings/sound/nvidia,tegra186-dspk.yaml | 88 +++ .../bindings/sound/nvidia,tegra210-admaif.yaml | 116 +++ .../bindings/sound/nvidia,tegra210-ahub.yaml | 144 ++++ .../bindings/sound/nvidia,tegra210-dmic.yaml | 88 +++ .../bindings/sound/nvidia,tegra210-i2s.yaml | 106 +++ .../devicetree/bindings/sound/simple-card.yaml | 1 + arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts | 48 ++ arch/arm64/boot/dts/nvidia/tegra186.dtsi | 231 +++++- arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts | 36 + arch/arm64/boot/dts/nvidia/tegra194.dtsi | 239 +++++- arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts | 136 +++- arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts | 85 +++ arch/arm64/boot/dts/nvidia/tegra210.dtsi | 219 +++++- arch/arm64/configs/defconfig | 8 + include/sound/simple_card.h | 5 + include/sound/soc.h | 3 + sound/soc/generic/simple-card.c | 96 ++- sound/soc/soc-core.c | 43 +- sound/soc/soc-dai.c | 1 + sound/soc/soc-pcm.c | 3 +- sound/soc/tegra/Kconfig | 56 ++ sound/soc/tegra/Makefile | 10 + sound/soc/tegra/tegra186_dspk.c | 427 +++++++++++ sound/soc/tegra/tegra186_dspk.h | 70 ++ sound/soc/tegra/tegra210_admaif.c | 845 +++++++++++++++++++++ sound/soc/tegra/tegra210_admaif.h | 162 ++++ sound/soc/tegra/tegra210_ahub.c | 578 ++++++++++++++ sound/soc/tegra/tegra210_ahub.h | 100 +++ sound/soc/tegra/tegra210_dmic.c | 440 +++++++++++ sound/soc/tegra/tegra210_dmic.h | 82 ++ sound/soc/tegra/tegra210_i2s.c | 780 +++++++++++++++++++ sound/soc/tegra/tegra210_i2s.h | 126 +++ sound/soc/tegra/tegra_cif.h | 65 ++ sound/soc/tegra/tegra_pcm.c | 235 +++++- sound/soc/tegra/tegra_pcm.h | 21 +- 35 files changed, 5657 insertions(+), 36 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra210-admaif.yaml create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra210-ahub.yaml create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra210-i2s.yaml create mode 100644 sound/soc/tegra/tegra186_dspk.c create mode 100644 sound/soc/tegra/tegra186_dspk.h create mode 100644 sound/soc/tegra/tegra210_admaif.c create mode 100644 sound/soc/tegra/tegra210_admaif.h create mode 100644 sound/soc/tegra/tegra210_ahub.c create mode 100644 sound/soc/tegra/tegra210_ahub.h create mode 100644 sound/soc/tegra/tegra210_dmic.c create mode 100644 sound/soc/tegra/tegra210_dmic.h create mode 100644 sound/soc/tegra/tegra210_i2s.c create mode 100644 sound/soc/tegra/tegra210_i2s.h create mode 100644 sound/soc/tegra/tegra_cif.h -- 2.7.4

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[bug report] ASoC: soc-dai: return proper error for get_sdw_stream()
by dan.carpenter＠oracle.com 17 Jul '20

17 Jul '20

Hello Srinivas Kandagatla, The patch 308811a327c3: "ASoC: soc-dai: return proper error for get_sdw_stream()" from Mar 16, 2020, leads to the following static checker warning: drivers/soundwire/stream.c:1920 sdw_shutdown_stream() error: 'sdw_stream' dereferencing possible ERR_PTR() drivers/soundwire/stream.c 1902 void sdw_shutdown_stream(void *sdw_substream) 1903 { 1904 struct snd_pcm_substream *substream = sdw_substream; 1905 struct snd_soc_pcm_runtime *rtd = substream->private_data; 1906 struct sdw_stream_runtime *sdw_stream; 1907 struct snd_soc_dai *dai; 1908 1909 /* Find stream from first CPU DAI */ 1910 dai = asoc_rtd_to_cpu(rtd, 0); 1911 1912 sdw_stream = snd_soc_dai_get_sdw_stream(dai, substream->stream); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ We updated this to return error pointers as well as NULL but forgot to check the caller. 1913 1914 if (!sdw_stream) { 1915 dev_err(rtd->dev, "no stream found for DAI %s", dai->name); 1916 return; 1917 } 1918 1919 /* release memory */ 1920 kfree(sdw_stream->name); 1921 sdw_release_stream(sdw_stream); 1922 regards, dan carpenter

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[PATCH -next] ALSA: line6: Use kmemdup in podhd_set_monitor_level()
by YueHaibing 17 Jul '20

17 Jul '20

Use kmemdup rather than duplicating its implementation. Signed-off-by: YueHaibing <yuehaibing(a)huawei.com> --- sound/usb/line6/podhd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/sound/usb/line6/podhd.c b/sound/usb/line6/podhd.c index 1557483ec657..eef45f7fef0d 100644 --- a/sound/usb/line6/podhd.c +++ b/sound/usb/line6/podhd.c @@ -293,12 +293,10 @@ static void podhd_set_monitor_level(struct usb_line6_podhd *podhd, int value) }; unsigned char *buf; - buf = kmalloc(sizeof(msg), GFP_KERNEL); + buf = kmemdup(msg, sizeof(msg), GFP_KERNEL); if (!buf) return; - memcpy(buf, msg, sizeof(msg)); - if (value < 0) value = 0; -- 2.17.1

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[PATCH] ALSA: info: Drop WARN_ON() from buffer NULL sanity check
by Takashi Iwai 17 Jul '20

17 Jul '20

snd_info_get_line() has a sanity check of NULL buffer -- both buffer itself being NULL and buffer->buffer being NULL. Basically both checks are valid and necessary, but the problem is that it's with snd_BUG_ON() macro that triggers WARN_ON(). The latter condition (NULL buffer->buffer) can be met arbitrarily by user since the buffer is allocated at the first write, so it means that user can trigger WARN_ON() at will. This patch addresses it by simply moving buffer->buffer NULL check out of snd_BUG_ON() so that spurious WARNING is no longer triggered. Reported-by: syzbot+e42d0746c3c3699b6061(a)syzkaller.appspotmail.com Cc: <stable(a)vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai(a)suse.de> --- sound/core/info.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/core/info.c b/sound/core/info.c index 8c6bc5241df5..9fec3070f8ba 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -606,7 +606,9 @@ int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) { int c; - if (snd_BUG_ON(!buffer || !buffer->buffer)) + if (snd_BUG_ON(!buffer)) + return 1; + if (!buffer->buffer) return 1; if (len <= 0 || buffer->stop || buffer->error) return 1; -- 2.16.4

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WARNING in snd_info_get_line
by syzbot 17 Jul '20

17 Jul '20

Hello, syzbot found the following issue on: HEAD commit: f8456690 Merge tag 'clk-fixes-for-linus' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11539507100000 kernel config: https://syzkaller.appspot.com/x/.config?x=e944500a36bc4d55 dashboard link: https://syzkaller.appspot.com/bug?extid=e42d0746c3c3699b6061 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1531c5ab100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17c399c7100000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e42d0746c3c3699b6061(a)syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6804 at sound/core/info.c:609 snd_info_get_line+0x3d0/0x450 sound/core/info.c:609 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6804 Comm: syz-executor373 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1f0/0x31e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:542 RIP: 0010:snd_info_get_line+0x3d0/0x450 sound/core/info.c:609 Code: 0f 85 84 00 00 00 41 c6 45 00 00 31 ed 89 e8 48 83 c4 40 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 57 8a 3b fb eb 05 e8 50 8a 3b fb <0f> 0b bd 01 00 00 00 eb da 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a3 RSP: 0018:ffffc90001077a38 EFLAGS: 00010293 RAX: ffffffff86390470 RBX: 0000000000000080 RCX: ffff888096156500 RDX: 0000000000000000 RSI: ffffc90001077b10 RDI: ffff8880a1e30600 RBP: ffffc90001077bc8 R08: dffffc0000000000 R09: ffffed10429a6594 R10: ffffed10429a6594 R11: 0000000000000000 R12: ffff8880a2527908 R13: ffffc90001077b10 R14: 1ffff110143c60c0 R15: ffff8880a1e30600 snd_mixer_oss_proc_write+0x6d/0x670 sound/core/oss/mixer_oss.c:1179 snd_info_text_entry_release+0xdf/0x1c0 sound/core/info.c:409 close_pdeo+0x16c/0x310 fs/proc/inode.c:244 proc_reg_release+0x17c/0x1c0 fs/proc/inode.c:561 __fput+0x2f0/0x750 fs/file_table.c:281 task_work_run+0x137/0x1c0 kernel/task_work.c:135 exit_task_work include/linux/task_work.h:25 [inline] do_exit+0x601/0x1f80 kernel/exit.c:805 do_group_exit+0x161/0x2d0 kernel/exit.c:903 __do_sys_exit_group+0x13/0x20 kernel/exit.c:914 __se_sys_exit_group+0x10/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x37/0x40 kernel/exit.c:912 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x43eeb8 Code: Bad RIP value. RSP: 002b:00007ffce5a0e308 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043eeb8 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004be6c8 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

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