Which caste is Palla surname?

it is Yadavas surname.

because mine is also the same.

kanthisree

a definitely.. Palla is surname of yadavas with subcaste: Karna golla. Palla comes under Raagendrulu gothram. Palla, Majjiga, Erukula, Boda, Sallanga groups come under Raagendrulu gothram. We can see these people in Anantapur, Chittor, Kurnool DIst's of AP. Also in tumkur, Bellary, Chikballapur and KOlar Dist's of Karnataka