Stream: git-wasmtime

Topic: wasmtime / issue #6433 wasmtime v9 jit panics when using ...

Wasmtime GitHub notifications bot (May 22 2023 at 20:28):

repi opened issue #6433:

Test Case

The Linux perf support enabled with ProfilingStrategy::PerfMap now with wasmtime v9.0.0 panics in wasmtime-jit

Steps to Reproduce

Compile a module with config.profiler(wasmtime::ProfilingStrategy::PerfMap);

Expected Results

It compiles

Actual Results

It panics inside wasmtime-jit on an Option::unwrap from:

    /// Returns an iterator over all array-to-Wasm trampolines defined within
    /// this module, providing both their index and their in-memory body.
    pub fn array_to_wasm_trampolines(
        &self,
    ) -> impl ExactSizeIterator<Item = (DefinedFuncIndex, &[u8])> + '_ {
        self.funcs
            .keys()
            .map(move |i| (i, self.array_to_wasm_trampoline(i).unwrap()))
    }

Versions and Environment

Wasmtime version or commit: 9.0.0

Operating system: Linux

Architecture: x64

Extra Info

This panic didn't happen on v8.0.1.

Likely caused by either these PRs?
- #6262
- #6358

Wasmtime GitHub notifications bot (May 22 2023 at 20:28):

repi labeled issue #6433:

Test Case

The Linux perf support enabled with ProfilingStrategy::PerfMap now with wasmtime v9.0.0 panics in wasmtime-jit

Steps to Reproduce

Compile a module with config.profiler(wasmtime::ProfilingStrategy::PerfMap);

Expected Results

It compiles

Actual Results

It panics inside wasmtime-jit on an Option::unwrap from:

    /// Returns an iterator over all array-to-Wasm trampolines defined within
    /// this module, providing both their index and their in-memory body.
    pub fn array_to_wasm_trampolines(
        &self,
    ) -> impl ExactSizeIterator<Item = (DefinedFuncIndex, &[u8])> + '_ {
        self.funcs
            .keys()
            .map(move |i| (i, self.array_to_wasm_trampoline(i).unwrap()))
    }

Versions and Environment

Wasmtime version or commit: 9.0.0

Operating system: Linux

Architecture: x64

Extra Info

This panic didn't happen on v8.0.1.

Likely caused by either these PRs?
- #6262
- #6358

Wasmtime GitHub notifications bot (May 22 2023 at 23:25):

peterhuene commented on issue #6433:

I believe this is now fixed with 9.0.1's release.

Wasmtime GitHub notifications bot (May 22 2023 at 23:25):

peterhuene closed issue #6433:

Test Case

The Linux perf support enabled with ProfilingStrategy::PerfMap now with wasmtime v9.0.0 panics in wasmtime-jit

Steps to Reproduce

Compile a module with config.profiler(wasmtime::ProfilingStrategy::PerfMap);

Expected Results

It compiles

Actual Results

It panics inside wasmtime-jit on an Option::unwrap from:

    /// Returns an iterator over all array-to-Wasm trampolines defined within
    /// this module, providing both their index and their in-memory body.
    pub fn array_to_wasm_trampolines(
        &self,
    ) -> impl ExactSizeIterator<Item = (DefinedFuncIndex, &[u8])> + '_ {
        self.funcs
            .keys()
            .map(move |i| (i, self.array_to_wasm_trampoline(i).unwrap()))
    }

Versions and Environment

Wasmtime version or commit: 9.0.0

Operating system: Linux

Architecture: x64

Extra Info

This panic didn't happen on v8.0.1.

Likely caused by either these PRs?
- #6262
- #6358

Wasmtime GitHub notifications bot (May 23 2023 at 08:49):

repi commented on issue #6433:

thanks for quick fix! confirmed that 9.0.1 fixes it!

Last updated: Dec 06 2025 at 06:05 UTC