> > On 26 Sep 2020, at 2:51 pm, Jens Axboe <axboe@xxxxxxxxx> wrote: > > On 9/26/20 1:55 AM, Christian Hewitt wrote: >> I am using an ARM SBC device with Amlogic S922X chip (Beelink >> GS-King-X, an Android STB) to boot the Kodi mediacentre distro >> LibreELEC (which I work on) although the issue is also reproducible >> with Manjaro and Armbian on the same hardware, and with the GT-King >> and GT-King Pro devices from the same vendor - all three devices are >> using a common dtsi: >> >> https://github.com/chewitt/linux/blob/amlogic-5.9-integ/arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts >> https://github.com/chewitt/linux/blob/amlogic-5.9-integ/arch/arm64/boot/dts/amlogic/meson-g12b-gtking-pro.dts >> https://github.com/chewitt/linux/blob/amlogic-5.9-integ/arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts >> https://github.com/chewitt/linux/blob/amlogic-5.9-integ/arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi >> >> I have schematics for the devices, but can only share those privately >> on request. >> >> For testing I am booting LibreELEC from SD card. The box has a 4TB >> SATA drive internally connected with a USB > SATA bridge, see dmesg: >> http://ix.io/2yLh and I connect a USB stick with a 4GB ISO file that I >> copy to the internal SATA drive. Within 10-20 seconds of starting the >> copy the box deadlocks needing a hard power cycle to recover. The >> timing of the deadlock is variable but the device _always_ deadlocks. >> Although I am using a simple copy use-case, there are similar reports >> in Armbian forums performing tasks like installs/updates that involve >> I/O loads. >> >> Following advice in the #linux-amlogic IRC channel I added >> CONFIG_SOFTLOCKUP_DETECTOR and CONFIG_DETECT_HUNG_TASK and was able to >> get output on the HDMI screen (it is not possible to connect to UART >> pins without destroying the box case). If you advance the following >> video frame by frame in VLC you can see the output: >> >> https://www.dropbox.com/s/klvcizim8cs5lze/lockup_clip.mov?dl=0 > > Try with this patch: > > https://lore.kernel.org/linux-block/20200925191902.543953-1-shakeelb@xxxxxxxxxx/ It still locks up approx. 25 seconds into the copy operation. Here’s the output in video again (a little blurry): https://www.dropbox.com/s/3j2czaq509arg6g/lockup_clip2.mov?dl=0 Christian
