syang-ng opened a new pull request #8983: URL: https://github.com/apache/tvm/pull/8983
Similar to the bug reported in [PR 8961](https://github.com/apache/tvm/pull/8961), I find there are other three divisions in [src/arith/rewrite_simplify.cc](https://github.com/apache/tvm/blob/main/src/arith/rewrite_simplify.cc) also don't check whether the divisor is 0. ## Bug Description Each line of `rewrite_simplify` can trigger the segmentation fault error. ```python import tvm analyzer = tvm.arith.Analyzer() # mod analyzer.rewrite_simplify(tvm.tir.Mod(tvm.tir.Ramp(1,1,2), tvm.tir.Broadcast(0, 2))) # floordiv analyzer.rewrite_simplify(tvm.tir.FloorDiv(tvm.tir.Ramp(1,1,2), tvm.tir.Broadcast(0, 2))) # floormod analyzer.rewrite_simplify(tvm.tir.FloorMod(tvm.tir.Ramp(1,1,2), tvm.tir.Broadcast(0, 2))) ``` To fix these errors, I add three zero checks in operator `mod`, `floordiv`, `floormod`. And I hope there will be no division by zero errors elsewhere :-) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
