Analyzing Segmentation fault Core Dump (gdb)
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Hi All,
I am getting following segmentation faults while running an Linux based application on imax6q custom hardware design. I back traced the core dump using Linux GDB and following you can see those core dumps.
Kernel I'm using - Linux-boundary 4.1.15
Seg fault Core dump 1
Program terminated with signal SIGSEGV, Segmentation fault.
#0 gcoTEXTURE_BindTextureEx (Texture=0x263c6c4, Target=Target@entry=0, Sampler=1, Sampler@entry=0, Info=Info@entry=0x23f0708, textureLayer=textureLayer@entry=0)
at gc_hal_user_texture.c:3804
3804 gc_hal_user_texture.c: No such file or directory.
Seg fault Core dump 2
Program terminated with signal SIGSEGV, Segmentation fault.
#0 _SetFenceCtx (fence=0x5c30d6c, head=0x5c2ab74) at gc_hal_user_hardware.c:5752
5752 gc_hal_user_hardware.c: No such file or directory.
1) Those core dumps are directed to following source files. But I couldn't find those file in the above Linux-boundary 4.1.15 kernel build. What are they referring to ? To overcome with this problem what do you suggest ?
gc_hal_user_texture.c
gc_hal_user_hardware.c
src/glcore/gc_es_draw.c:943
src/glcore/gc_es_api.c:399
2) I could find a file called gc_hal_kernel_hardware.c in my kernel build. So is this the file the gdb back traced log is pointing out ? Do you have any idea of this kind of segmentation faults ?
Regards,
Peter.
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Hi Peter
please refer to description of GPU drivers in sect.13.1.1.3 Source Code Structure
attached Linux Manual. There are two parts: kernel module sources (as you found gc_hal_kernel_hardware.c )
and user mode library provided as binaries. In general you can try to get sources, as suggested on
https://community.nxp.com/thread/382621#600015
Other ways to use more latest kernels were many gpu bugs were fixed:
Best regards
igor
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