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kern/54817: kernel stall in radeon_gem_object_create
>Number: 54817
>Category: kern
>Synopsis: kernel stall in radeon_gem_object_create
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Jan 01 03:25:00 +0000 2020
>Originator: Izumi Tsutsui
>Release: NetBSD 9.0_RC1
>Organization:
>Environment:
System: NetBSD mirage 9.0_RC1 NetBSD 9.0_RC1 (GENERIC) #10: Sun Dec 29 03:07:32 JST 2019 tsutsui@mirage:/s/netbsd-9/src/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
NetBSD/i386 9.0_RC1 kernel on my machine (ASRock M3A UCC + Phenom II X4)
sometimes stalls with the following messages during load
(Firefox + HTML5 video + build.sh -j4 etc. on Xorg):
---
Dec 25 02:26:49 mirage /netbsd: [ 4974.8588428] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (4792320, 2, 4096, -12)
Dec 25 02:26:49 mirage /netbsd: [ 4974.8788510] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (4915200, 2, 4096, -12)
Dec 25 02:26:49 mirage /netbsd: [ 4974.8888557] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (4792320, 2, 4096, -12)
---
Dec 25 04:14:54 mirage /netbsd: [ 6011.7988327] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (3944448, 2, 4096, -12)
Dec 25 04:14:54 mirage /netbsd: [ 6011.8388527] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (3944448, 2, 4096, -12)
Dec 25 04:14:54 mirage /netbsd: [ 6011.8788718] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (3944448, 2, 4096, -12)
Dec 25 04:14:54 mirage /netbsd: [ 6011.8988815] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (1327104, 2, 4096, -12)
Dec 25 04:14:54 mirage /netbsd: [ 6011.9188974] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (3944448, 2, 4096, -12)
Dec 25 04:15:17 mirage /netbsd: [ 6034.9801856] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (4866048, 2, 4096, -12)
---
Dec 31 05:03:51 mirage /netbsd: [ 178980.5810873] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/radeon/radeon_gem.c:84)radeon_gem_object_create] *ERROR* Failed to allocate GEM object (1306624, 2, 4096, -12)
---
The machine has Radeon HD5450 and it fails to start Xorg,
so I put the following line in /etc/X11/xorg.conf (see PR/54782):
https://gnats.netbsd.org/54782
>> Option "AccelMethod" "uxa"
Full dmesg is here:
https://dmesgd.nycbug.org/index.cgi?do=view&id=5276
This is not stock GENERIC, but it also happened on GENERIC.
>How-To-Repeat:
Some load on NetBSD/i386 9.0_RC1 with X?
>Fix:
No idea. Something uses malloc(9) with M_NOWAIT as PR/54796 in audio(9)?
---
Izumi Tsutsui
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