Hi

You don't need to worry, even if you have done your graduation from Canada

This is because,

to be eligible for UPSC one needs a graduate degree from a recognised University it doesn't matter whether it's from India or Canada so even if you do your graduation from Canada from a recognised university, you will be still eligible for UPSC examination

You can check UPSC eligibility criteria below

*You must have a bachelor's degree in any discipline like  from a recognised university

*Minimum age limit :-  21 years

*Maximum age limit :-  32 years , also there's 3 year relaxation on upper age limit for obc and of 5 years for sc/st category

For detailed information go through

https://competition.careers360.com/articles/upsc-ias-eligibility-criteria/amp

Thank you