What do Unhandled context fault messages mean when doing Mipi Capture


#1

Hi. Can someone tell me what these messages mean when capturing video from a camera?
[ 131.024506] arm-smmu da0000.arm,smmu: Unhandled context fault: fsr=0x402, iova=0xffee2000, fsynr=0x33, cb=0
[ 131.057802] arm-smmu da0000.arm,smmu: Unhandled context fault: fsr=0x402, iova=0xffde2000, fsynr=0x33, cb=0

Thanks,
Kim


#2

It looks like hardware (e.g. mipi controller) tried to access a memory address which is not mapped in its context (not allowed). In context of capture it could mean mipi receive more data than allocated for the capture buffer. So can be due to a misalignment between expected image (w, h, bpp) and the received one.


#3

Hi Loic,

Thanks for the response. I increased the capture buffer by 4 more rows and I do not see this message any longer :slight_smile:

Thanks,
Kim