paritytech/polkavm

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A fast and secure RISC-V based virtual machine

Is paritytech/polkavm beginner-friendly?

We have not seen enough recent pull requests from outside contributors to paritytech/polkavm to say how often they are merged. 3 beginner-friendly issues are open now.

Stars: 434
Forks: 89
Open beginner issues: 3
Indexed issues: 55
Avg merge: 3d 8h
Merged PRs (30d): 5

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Oct 20, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

How to contribute to paritytech/polkavm

There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
Your contributions will be published under the project's Apache-2.0 license.
Pick one of the 3 open beginner-friendly issues below and comment that you want to work on it before you start.

Beginner friendly Everything

Open All

Issues somebody may already be working on are listed last. List everything by date

Disassembler panics on a jump table that lists one target twice
Open
- Is something wrong?
Difficulty 2/5 1-3 hours Newbie friendliness 75/100

paritytech/polkavm#443 · Opened Oct 23, 2026
Assembler emits `cmov_if_zero` for `if reg != 0` conditional moves
Open
- Is something wrong?
Difficulty 2/5 1-3 hours Newbie friendliness 76/100

paritytech/polkavm#442 · Opened Oct 23, 2026
Malformed ELF input panics the linker instead of being rejected
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 57/100

paritytech/polkavm#441 · Opened Oct 23, 2026
Host read of the last page panics the Linux sandbox (dynamic paging)
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 68/100

paritytech/polkavm#440 · Opened Oct 23, 2026
Interpreter traps a load/store ending at 2^32 the recompiler performs
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 68/100

paritytech/polkavm#439 · Opened Oct 23, 2026
Non-power-of-two `max_allocation_size` panics (debug build only)
Open
- Is something wrong?
Difficulty 3/5 Half a day Newbie friendliness 55/100

paritytech/polkavm#435 · Opened Oct 15, 2026
`reset_interpreter_cache` breaks resuming from OOG or a page fault
Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 62/100

paritytech/polkavm#434 · Opened Oct 15, 2026
Async gas: a fault after OOG refunds gas and resumes mid-instruction
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 12/100

paritytech/polkavm#433 · Opened Oct 15, 2026
A failed (un)protect_memory still changes the page on the interpreter
Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 45/100

paritytech/polkavm#432 · Opened Oct 15, 2026
ProgramBlobBuilder layout never converges for a Latest64 program
Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 22/100

paritytech/polkavm#431 · Opened Oct 15, 2026
ReviveV1 decoder injects a trap before a valid final instruction
Open
- Is something wrong?
Difficulty 4/5 1-2 days Newbie friendliness 32/100

paritytech/polkavm#430 · Opened Oct 15, 2026
Interpreter reports the wrong fault page for a page-straddling store
Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 25/100

paritytech/polkavm#429 · Opened Oct 15, 2026
`CostModel::deserialize` never returns `Some`; one length panics
Open
- Is something wrong?
Difficulty 2/5 1-3 hours Newbie friendliness 84/100

paritytech/polkavm#418 · Opened Sep 15, 2026
Interpreter and recompiler disagree on the operand width of `memset`
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 76/100

paritytech/polkavm#413 · 1 comment · Opened Aug 15, 2026
Massively expand fuzzying
Open
- Is something wrong?
K-correctness P-high

Difficulty 5/5 Over a week Newbie friendliness 35/100

paritytech/polkavm#406 · Opened Jul 17, 2026
Audit the instruction gas costs
Open
- Is something wrong?
K-correctness P-high

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#405 · Opened Jul 17, 2026
Test harness for gas cost model
Open
- Is something wrong?
P-high

Difficulty 5/5 Over a week Newbie friendliness 30/100

paritytech/polkavm#404 · Opened Jul 17, 2026
AVX-512 optimization of the gas cost model simulator
Open
- Is something wrong?
D-medium K-performance P-medium

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#403 · Opened Jul 17, 2026
Linux sandbox rewrite
May be free again @koute claimed this 100 days ago, and no pull request is open. Open
- Is something wrong?
K-correctness K-performance K-research P-high

paritytech/polkavm#402 · 1 assignee · Opened Jul 17, 2026
Program blob rework: remove bitmask from the program blobs
May be free again @koute claimed this 100 days ago, and no pull request is open. Open
- Is something wrong?
P-high

paritytech/polkavm#401 · 1 assignee · Opened Jul 17, 2026
Benchmark: PolkaVM vs revm syscall overhead analysis — 26-98x slower on storage/hashing, faster on pure computation
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 35/100

paritytech/polkavm#363 · 1 comment · 1 reaction · Opened Feb 17, 2026
Audit the PolkaVM interpreter
May be free again @Gioyik claimed this 522 days ago, and no pull request is open. Open
- Is something wrong?
feature needs-info

paritytech/polkavm#299 · 5 comments · 1 assignee · Opened May 21, 2025
Fix the generic sandbox backend for the recompiler
Open
- Is something wrong?
P-low

Difficulty 4/5 3-5 days Newbie friendliness 25/100

paritytech/polkavm#175 · Opened Sep 24, 2024
Refactor `ProgramBlobBuilder` to accept instruction offsets in jump args
Open
- Is something wrong?
D-easy P-low

Difficulty 3/5 1-2 days Newbie friendliness 45/100

paritytech/polkavm#173 · 1 comment · Opened Sep 24, 2024
Getting started documentation
May be free again A pull request for this issue was closed without being merged. Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 38/100

paritytech/polkavm#163 · 3 comments · Opened Sep 3, 2024
Feature Request: C Wrapper/Callable from C
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#132 · 1 comment · Opened Jun 17, 2024
support (u32, u32) as return value
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 35/100

paritytech/polkavm#116 · 2 comments · Opened May 6, 2024
Allow passing larger types to exported functions
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#108 · Opened Apr 30, 2024
include binary size to benchmarks
Open
- Is something wrong?
D-easy P-low

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

paritytech/polkavm#106 · 1 comment · Opened Apr 29, 2024
Disallow `as` casts and use dedicated helper functions instead
Open
- Is something wrong?
K-correctness P-high

Difficulty 4/5 3-5 days Newbie friendliness 20/100

paritytech/polkavm#79 · Opened Dec 14, 2023
Consider the Thead extensions
Open
- Is something wrong?
K-performance P-medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#72 · 6 comments · Opened Nov 26, 2023
Consider the Zcmp extension
Open
- Is something wrong?
P-low

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#65 · Opened Nov 20, 2023
`polkavm_import` macro should support `!` as return type
Open
- Is something wrong?
P-low

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

paritytech/polkavm#47 · 1 comment · Opened Sep 10, 2023
Out-of-box support for reproducible builds of guest programs
Open
- Is something wrong?
P-medium

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#39 · 2 reactions · Opened Aug 30, 2023
Investigate the possibility of recompiling normal 32-register RISC-V programs
Open
- Is something wrong?
K-research P-low

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#38 · Opened Aug 30, 2023
Investigate the possibility of recompiling existing WASM programs
Open
- Is something wrong?
K-research P-low

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#37 · Opened Aug 30, 2023
Add macro-ops for memcpy and memset
Open
- Is something wrong?
K-performance P-low

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#35 · Opened Aug 30, 2023
Advanced debugging support: built-in profiler
Open
- Is something wrong?
K-debugging K-performance P-low

Difficulty 5/5 Over a week Newbie friendliness 10/100

paritytech/polkavm#33 · Opened Aug 30, 2023
Advanced debugging support: time travel debugging
Open
- Is something wrong?
K-debugging P-medium

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#32 · 1 comment · 1 reaction · Opened Aug 30, 2023
Advanced debugging support: debugger support
Open
- Is something wrong?
K-debugging P-medium

Difficulty 5/5 Over a week Newbie friendliness 15/100

paritytech/polkavm#31 · Opened Aug 30, 2023
Support generating offline execution traces
Open
- Is something wrong?
K-debugging P-medium

Difficulty 5/5 Over a week Newbie friendliness 35/100

paritytech/polkavm#30 · Opened Aug 30, 2023
Basic debugging support: stack traces on traps
Open
- Is something wrong?
K-debugging P-high

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#29 · Opened Aug 30, 2023
Consider supporting Indirect Branch Tracking
Open
- Is something wrong?
K-security P-low

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#23 · Opened Aug 30, 2023
Automatically run tests on the oldest Linux kernel version we want to support
Open
- Is something wrong?
K-correctness K-devops P-medium

Difficulty 4/5 3-5 days Newbie friendliness 35/100

paritytech/polkavm#22 · Opened Aug 30, 2023
Automatically run tests on many diverse Linux distributions
Open
- Is something wrong?
K-correctness K-devops P-medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#21 · Opened Aug 30, 2023
Investigate full support for macOS hosts through virtualization
Open
- Is something wrong?
K-research P-low

Difficulty 5/5 Over a week Newbie friendliness 15/100

paritytech/polkavm#19 · Opened Aug 30, 2023
Investigate full support for Windows hosts through virtualization
Open
- Is something wrong?
K-research P-low

Difficulty 5/5 Over a week Newbie friendliness 25/100

paritytech/polkavm#18 · Opened Aug 30, 2023
Stabilize the format of the blob
Open
- Is something wrong?
P-medium

Difficulty 5/5 Over a week Newbie friendliness 15/100

paritytech/polkavm#15 · Opened Aug 30, 2023
Add benchmarks: benchmarks game
Open
- Is something wrong?
K-performance P-medium

Difficulty 3/5 1-2 days Newbie friendliness 35/100

paritytech/polkavm#13 · Opened Aug 30, 2023
Exhaustively test every possible runtime error
Open
- Is something wrong?
K-correctness P-high

Difficulty 5/5 Over a week Newbie friendliness 20/100

paritytech/polkavm#8 · Opened Aug 30, 2023

paritytech/polkavm

Is paritytech/polkavm beginner-friendly?

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