Hash mismatch 1.4 vs. 1.5 w/JIT

[sakridge]

Problem

Devnet experienced a hash mismatch which looks like a divergence with interpreted vs. JIT paths.

Continued from this:
#14948 (comment)
#14948 (comment)

Proposed Solution

Debug and fix.

[sakridge]

Fixed by solana-labs/rbpf#140

[jackcmay]

@sakridge Are you aware of any further action on this issue?

[sakridge]

@sakridge Are you aware of any further action on this issue?

I was trying to decide what to do with it.. nobody read my message and moved the JIT part to here. We can close this and re-open #14948

[jackcmay]

@sakridge afaik rbpf #140 fixes the hash mismatch in #14948. Can you elaborate on what the outstanding issue is?

[sakridge]

@sakridge afaik rbpf #140 fixes the hash mismatch in #14948. Can you elaborate on what the outstanding issue is?

#14948 was originally for the mismatch that was found in the KIN simulation run. JIT was not enabled in that context and only votes and SPL programs are being executed there, so it wasn't the JIT-related issue. The JIT issue was an instance of mismatch on devnet, and while they were both hash mismatches, they are not the same issue. That's why I tried to move the JIT issue debug into a new issue (this one).

[jackcmay]

Ah, so let's close this issue with rbpf #140.

As for #14948, that issue's conversation went to the jit/devnet. You want to re-establish a new direction there?

[sakridge]

Ah, so let's close this issue with rbpf #140.

As for #14948, that issue's conversation went to the jit/devnet. You want to re-establish a new direction there?

Or maybe just open an entirely new issue.