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Message-ID: <0a3dba2c-e3d1-4499-9db3-55ba26013877@ti.com>
Date: Wed, 5 Nov 2025 15:38:11 -0600
From: Brandon Brnich <b-brnich@...com>
To: Jackson.lee <jackson.lee@...psnmedia.com>, <mchehab@...nel.org>,
<hverkuil-cisco@...all.nl>, <nicolas.dufresne@...labora.com>,
<bob.beckett@...labora.com>
CC: <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<lafley.kim@...psnmedia.com>, <hverkuil@...all.nl>,
<nas.chung@...psnmedia.com>
Subject: Re: [PATCH v5 1/4] media: chips-media: wave5: Fix SError of kernel
panic when closed
Hi Jackson,
On 9/22/2025 12:52 AM, Jackson.lee wrote:
> From: Jackson Lee <jackson.lee@...psnmedia.com>
>
> SError of kernel panic rarely happened while testing fluster.
> The root cause was to enter suspend mode because timeout of autosuspend
> delay happened.
>
> [ 48.834439] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError
> [ 48.834455] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7
> [ 48.834461] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025
> [ 48.834464] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 48.834468] pc : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
> [ 48.834488] lr : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
> [ 48.834495] sp : ffff8000856e3a30
> [ 48.834497] x29: ffff8000856e3a30 x28: ffff0008093f6010 x27: ffff000809158130
> [ 48.834504] x26: 0000000000000000 x25: ffff00080b625000 x24: ffff000804a9ba80
> [ 48.834509] x23: ffff000802343028 x22: ffff000809158150 x21: ffff000802218000
> [ 48.834513] x20: ffff0008093f6000 x19: ffff0008093f6000 x18: 0000000000000000
> [ 48.834518] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff74009618
> [ 48.834523] x14: 000000010000000c x13: 0000000000000000 x12: 0000000000000000
> [ 48.834527] x11: ffffffffffffffff x10: ffffffffffffffff x9 : ffff000802343028
> [ 48.834532] x8 : ffff00080b6252a0 x7 : 0000000000000038 x6 : 0000000000000000
> [ 48.834536] x5 : ffff00080b625060 x4 : 0000000000000000 x3 : 0000000000000000
> [ 48.834541] x2 : 0000000000000000 x1 : ffff800084bf0118 x0 : ffff800084bf0000
> [ 48.834547] Kernel panic - not syncing: Asynchronous SError Interrupt
> [ 48.834549] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7
> [ 48.834554] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025
> [ 48.834556] Call trace:
> [ 48.834559] dump_backtrace+0x94/0xec
> [ 48.834574] show_stack+0x18/0x24
> [ 48.834579] dump_stack_lvl+0x38/0x90
> [ 48.834585] dump_stack+0x18/0x24
> [ 48.834588] panic+0x35c/0x3e0
> [ 48.834592] nmi_panic+0x40/0x8c
> [ 48.834595] arm64_serror_panic+0x64/0x70
> [ 48.834598] do_serror+0x3c/0x78
> [ 48.834601] el1h_64_error_handler+0x34/0x4c
> [ 48.834605] el1h_64_error+0x64/0x68
> [ 48.834608] wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
> [ 48.834615] wave5_vpu_dec_clr_disp_flag+0x54/0x80 [wave5]
> [ 48.834622] wave5_vpu_dec_buf_queue+0x19c/0x1a0 [wave5]
> [ 48.834628] __enqueue_in_driver+0x3c/0x74 [videobuf2_common]
> [ 48.834639] vb2_core_qbuf+0x508/0x61c [videobuf2_common]
> [ 48.834646] vb2_qbuf+0xa4/0x168 [videobuf2_v4l2]
> [ 48.834656] v4l2_m2m_qbuf+0x80/0x238 [v4l2_mem2mem]
> [ 48.834666] v4l2_m2m_ioctl_qbuf+0x18/0x24 [v4l2_mem2mem]
> [ 48.834673] v4l_qbuf+0x48/0x5c [videodev]
> [ 48.834704] __video_do_ioctl+0x180/0x3f0 [videodev]
> [ 48.834725] video_usercopy+0x2ec/0x68c [videodev]
> [ 48.834745] video_ioctl2+0x18/0x24 [videodev]
> [ 48.834766] v4l2_ioctl+0x40/0x60 [videodev]
> [ 48.834786] __arm64_sys_ioctl+0xa8/0xec
> [ 48.834793] invoke_syscall+0x44/0x100
> [ 48.834800] el0_svc_common.constprop.0+0xc0/0xe0
> [ 48.834804] do_el0_svc+0x1c/0x28
> [ 48.834809] el0_svc+0x30/0xd0
> [ 48.834813] el0t_64_sync_handler+0xc0/0xc4
> [ 48.834816] el0t_64_sync+0x190/0x194
> [ 48.834820] SMP: stopping secondary CPUs
> [ 48.834831] Kernel Offset: disabled
> [ 48.834833] CPU features: 0x08,00002002,80200000,4200421b
> [ 48.834837] Memory Limit: none
> [ 49.161404] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---
>
I am still seeing a variation of this crash log during execution as we
have discussed. If there is a lot of logging turned on using gstreamers
debugging mechanism, a delay could occur between frames leading the
device to be shut off and a kernel panic occurring when next part of
bitstream is loaded.
Best,
Brandon
> Fixes: 2092b3833487 ("media: chips-media: wave5: Support runtime suspend/resume")
> Signed-off-by: Jackson Lee <jackson.lee@...psnmedia.com>
> Signed-off-by: Nas Chung <nas.chung@...psnmedia.com>
> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> ---
> .../platform/chips-media/wave5/wave5-vpu-dec.c | 3 ---
> .../platform/chips-media/wave5/wave5-vpu-enc.c | 3 ---
> .../media/platform/chips-media/wave5/wave5-vpu.c | 2 +-
> .../platform/chips-media/wave5/wave5-vpuapi.c | 15 ---------------
> 4 files changed, 1 insertion(+), 22 deletions(-)
>
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> index 72af0faa3ef2..1df78e427c6a 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> @@ -1829,9 +1829,6 @@ static int wave5_vpu_open_dec(struct file *filp)
> if (ret)
> goto cleanup_inst;
>
> - if (list_empty(&dev->instances))
> - pm_runtime_use_autosuspend(inst->dev->dev);
> -
> list_add_tail(&inst->list, &dev->instances);
>
> mutex_unlock(&dev->dev_lock);
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> index 506d6c6166a6..d2b047706626 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> @@ -1773,9 +1773,6 @@ static int wave5_vpu_open_enc(struct file *filp)
> if (ret)
> goto cleanup_inst;
>
> - if (list_empty(&dev->instances))
> - pm_runtime_use_autosuspend(inst->dev->dev);
> -
> list_add_tail(&inst->list, &dev->instances);
>
> mutex_unlock(&dev->dev_lock);
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu.c b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> index e1715d3f43b0..b3c633dd3df1 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> @@ -322,7 +322,7 @@ static int wave5_vpu_probe(struct platform_device *pdev)
> dev_info(&pdev->dev, "Product Code: 0x%x\n", dev->product_code);
> dev_info(&pdev->dev, "Firmware Revision: %u\n", fw_revision);
>
> - pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
> + pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
> pm_runtime_use_autosuspend(&pdev->dev);
> pm_runtime_enable(&pdev->dev);
> wave5_vpu_sleep_wake(&pdev->dev, true, NULL, 0);
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> index e5e879a13e8b..e94d6ebc9f81 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> @@ -207,8 +207,6 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res)
> int retry = 0;
> struct vpu_device *vpu_dev = inst->dev;
> int i;
> - int inst_count = 0;
> - struct vpu_instance *inst_elm;
>
> *fail_res = 0;
> if (!inst->codec_info)
> @@ -250,11 +248,6 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res)
>
> wave5_vdi_free_dma_memory(vpu_dev, &p_dec_info->vb_task);
>
> - list_for_each_entry(inst_elm, &vpu_dev->instances, list)
> - inst_count++;
> - if (inst_count == 1)
> - pm_runtime_dont_use_autosuspend(vpu_dev->dev);
> -
> unlock_and_return:
> mutex_unlock(&vpu_dev->hw_lock);
> pm_runtime_put_sync(inst->dev->dev);
> @@ -720,8 +713,6 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res)
> int ret;
> int retry = 0;
> struct vpu_device *vpu_dev = inst->dev;
> - int inst_count = 0;
> - struct vpu_instance *inst_elm;
>
> *fail_res = 0;
> if (!inst->codec_info)
> @@ -764,12 +755,6 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res)
> }
>
> wave5_vdi_free_dma_memory(vpu_dev, &p_enc_info->vb_task);
> -
> - list_for_each_entry(inst_elm, &vpu_dev->instances, list)
> - inst_count++;
> - if (inst_count == 1)
> - pm_runtime_dont_use_autosuspend(vpu_dev->dev);
> -
> mutex_unlock(&vpu_dev->hw_lock);
> pm_runtime_put_sync(inst->dev->dev);
>
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