13:29 <mrfixit2001> *waves* hi everyone :) Any devs happen to be online? I am running into an issue and have some debug detail.

13:29 <mrfixit2001> In case anyone does see this - I'm testing kernel 6.5+ compiled as 64-bit running mesa 23.1.8 in a 32-bit userspace. Hardware is a Pine64 RockPro64 Rk3399. As soon as I attempt to call into panfrost, the system crashes. There's no kernel panic, it just... stops. Only output I was able to capture is "panfrost_batch_submit failed: 2"

13:29 <mrfixit2001> As I dig in - it appears the drmIoctl call from panfrost_batch_submit_ioctl is returning -1

13:30 <mrfixit2001> Some additional info - rendering is trying to use gles/gbm and dmesg shows panfrost init ok...

13:30 <mrfixit2001> relevant dmesg detail: panfrost ff9a0000.gpu: clock rate = 500000000; mali-t860 id 0x860 major 0x2 minor 0x0 status 0x0; features: 00000000,00000407, issues: 00000000,24040400; Features: L2:0x07120206 Shader:0x00000000 Tiler:0x00000809 Mem:0x1 MMU:0x00002830 AS:0xff JS:0x7; shader_present=0xf l2_present=0x1

13:42 <ndufresne> mrfixit2001: I'm not a dev really, but been using panfrost on rk3399 for a while, do you have a sign that this affect 32bit userspace only, or did you just mention for completeness ? I have never tried 32bit GL code on that platform before

13:49 <robmur01> ISTR there have been issues with compat setups (32-bit Mesa on 64-bit kernel) before - not sure it's ever been well tested or properly supported

13:53 <robmur01> (although I also have a vague memory of playing with a compat userspace on my RK3399 at the time, but failing to reproduce whatever issue it was)

13:58 <mrfixit2001> I haven't found any other reported issues of the patch submit failing, so I have a suspicion it's specific to the 32-bit userspace with the 64-bit kernel.

14:02 <robmur01> a cursory inspection suggests ENOENT most likely comes from somewhere in drm_sched...

16:24 <jernej> FWIW, LibreELEC distro for RK3399 used for a long time 64-bit kernel and 32-bit userspace and AFAIK there were no issues with mesa.

16:25 <jernej> but then again, mesa is used more or less only for GUI rendering in Kodi, so pretty lightweight for GPU