| Summary: | On 64bit kernel(drm-next-radeon) ioctls from 32bit application doesn't work | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Krzysztof A. Sobiecki <sobkas> | ||||||||
| Component: | DRM/Radeon | Assignee: | Default DRI bug account <dri-devel> | ||||||||
| Status: | RESOLVED FIXED | QA Contact: | |||||||||
| Severity: | normal | ||||||||||
| Priority: | medium | CC: | kdekorte, yaneti | ||||||||
| Version: | unspecified | ||||||||||
| Hardware: | x86-64 (AMD64) | ||||||||||
| OS: | Linux (All) | ||||||||||
| Whiteboard: | |||||||||||
| i915 platform: | i915 features: | ||||||||||
| Attachments: |
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I have also tested it without KMS(radeon modeset=0) and it worked well. There was no ioctl32 error and 32bit glxinfo showed direct rendering: yes. I think this problem is connected with KMS. , memory management or something else. 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon X1650 Pro [1002:71c1] (rev 9e) Same problem on 2.6.31-rc3.
Jul 23 14:06:26 localhost kernel: [ 396.992905] ioctl32(ia32-glxinfo:7752): Unknown cmd fd(4) cmd(80046402){t:'d';sz:4} arg(ffb5ba50) on /dev/dri/card0
Jul 23 14:07:01 localhost kernel: [ 431.536462] ioctl32(ia32-glxinfo:7755): Unknown cmd fd(4) cmd(80046402){t:'d';sz:4} arg(fff10340) on /dev/dri/card0
Does setting .compat_ioctl = radeon_compat_ioctl for KMS as well in drivers/gpu/drm/radeon/radeon_drv.c fix the problem? Setting .compat_ioctl = radeon_compat_ioctl for KMS make 32bit ioctls work. But there is still problem that stops ia32-glxinfo from working.
After starting ia32-glxinfo:
libGL: OpenDriver: trying /usr/lib32/dri/r300_dri.so
drm_radeon_getparam_t (RADEON_PARAM_DEVICE_ID): -14
libGL error: failed to create dri screen
[...]
In dmesg I only get this:
[10664.708003] [drm:radeon_info_ioctl] *ERROR* copy_to_user
I will check what drm debug=1 prints.
For now I thin that 32bit DRM_RADEON_INFO(radeon_kms.c:radeon_info_ioctl) fails here:
"
if (DRM_COPY_TO_USER(value_ptr, &value, sizeof(uint32_t))) {
DRM_ERROR("copy_to_user\n");
return -EFAULT;
}
"
64bit one works as excepted.
excepted->expected Created attachment 28353 [details]
Log with drm debug=1 on kernel 2.6.31-rc5
Full log is really long so I post only relevant part. I will post full version if needed.
Created attachment 28354 [details]
Config file for kernel 2.6.31-rc5
Mesa commit: c3374bf97ecd82b915fb29c7c04951e2b75d4dbc fixed radeonGetParam problem. I'm still unable to run any 32bit binary that uses opengl. Every time I try to start it I got something like this: " ./fbo_firecube Allocating 512 x 512 radeon RBO (pitch 512) Depth renderbuffer size = 16 bits drmRadeonCmdBuffer: -14 " For "drmRadeonCmdBuffer: -14" bug I have created separate bug #23626 *** Bug 23816 has been marked as a duplicate of this bug. *** There was a patch made to libdrm that corrects the drmRadeonCmdBuffer: -14 and setting .compat_ioctl = radeon_compat_ioctl in drm-next completes the fix. It looks like commit 70ba2a374704e00df8868a7ac3d7350329d28924 in drm-next(drm-2.6) fixed this bug. I will close it, after merging of this commit into main tree. Commit migrated into main tree. I'm closing this bug. |
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Created attachment 26754 [details] My kernel configuration I'm using jglisse kernel: git://people.freedesktop.org/~glisse/drm-next drm-next-radeon 52c34724734132e7d416ce5ab5e934d702e8f179. For now I have tested only KMS setup. libdrm branch: modesetting-gem 1edb70f1b909d06f1c0ee7c9c794aec99454e488. Bug is reproducible even without X running. Running 32bit version of drmstat: drmstat -v -O /dev/dri/card0: Produces this kernel error: [ 2446.945430] ioctl32(lt-drmstat:14975): Unknown cmd fd(3) cmd(c0246400){t:'d';sz:36} arg(08213008) on /dev/dri/card0 [ 2446.945458] ioctl32(lt-drmstat:14975): Unknown cmd fd(3) cmd(c0106407){t:'d';sz:16} arg(fffab5e0) on /dev/dri/card0 [ 2446.945464] ioctl32(lt-drmstat:14975): Unknown cmd fd(3) cmd(c0086401){t:'d';sz:8} arg(fffab5ec) on /dev/dri/card0 Starting 32bit glxinfo: libGL: OpenDriver: trying /emul/ia32-linux/usr/lib/dri/r300_dri.so libGL error: failed to get magic with kernel error: [ 2694.804332] ioctl32(glxinfo:15042): Unknown cmd fd(4) cmd(80046402){t:'d';sz:4} arg(ff938800) on /dev/dri/card0 I hope this is only error in my kernel configuration.