Michael Tasche
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dumper can freeze system with help of some devg drivers
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Michael Tasche
11/14/2014 6:07 AM
post112336
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dumper can freeze system with help of some devg drivers
Hi,
if you have a segfault or another execption in a graphics-app, the System can get frozen.
In my case the dumper try's to dump out the register-space of the sm502-graphics controller.
By default the dumper does not read physical mappings, but in a graphics app, getting the physical mappings from io-
display, this info seems to get lost.
In my case, it is the 2 MB register space of the sm502, not readable at all offsets:
Mapping of io-display:
# pidin -P io-display map
...
Mapped Phys Memory @80101000 (81800000) 2048K S
...
Mapping of faulting graphics app:
# pidin -P gf-t1 map
...
ture-126f,0501,0:1 @80901000 ( 0) 2048K S
...
You can see it as shared memory under /dev/shmem too:
# ls -l /dev/shmem/
...
nrw-rw---- 3 root root 2097152 Nov 14 11:35 aperture-126f,0501,0:1
...
Is this a known issue ?
Regards
Michael
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