wasmerio

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

• wasix: a panicking syscall kills the host thread and leaves the process running without that guest thread

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  wasmerio/wasmer#7182 · Opened Nov 13, 2026

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• virtual-fs: concurrent `mem_fs::FileSystem::create_dir` of one path adds two directories

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  wasmerio/wasmer#7181 · Opened Nov 13, 2026

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• wasix: concurrent `path_rename` onto the same target panics ("race condition on filesystem detected or internal logic error")

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  wasmerio/wasmer#7180 · Opened Nov 13, 2026

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• wasix: WasiControlPlane never de-registers terminated processes, and has no way to list the ones it has

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  wasmerio/wasmer#7179 · Opened Nov 13, 2026

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• Worker: a refused getHeapStatistics()/cpuUsage() task is written to after it is freed

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  Difficulty 2/5 1-3 hours Newbie friendliness 79/100

  wasmerio/edgejs#188 · Opened Nov 13, 2026

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• wasix: `sock_send_file` only writes to sockets, so `sendfile` to a file fails with `EACCES` (breaks libc++ `std::filesystem::copy_file`)

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  wasmerio/wasmer#7177 · Opened Nov 13, 2026

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• wasix: After `path_rename` of a directory, its `..` still points at the old parent; once that is removed, `..` fails with `EACCES` and `scandir` of the moved directory fails

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  wasmerio/wasmer#7176 · Opened Nov 13, 2026

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• wasix: `fd_readdir` cookies shift when entries are removed between calls, so `rm -rf` leaves files behind

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  wasmerio/wasmer#7175 · Opened Nov 13, 2026

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• wasix: proc_spawn3 keeps every child's thread handle in the parent for good, so children count against max_threads after they exit

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  wasmerio/wasmer#7174 · Opened Nov 13, 2026

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• process.report.getReport() with workers signals a condition variable in a returned stack frame

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  wasmerio/edgejs#187 · Opened Nov 12, 2026

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• WASIX: a child's exit status of 80 or more reaches its parent as 79

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  wasmerio/wasmer#7172 · Opened Nov 12, 2026

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• uv_run: a child's exit is missed until the next timer when its output ends first (spawnSync with a timeout returns only at the timeout)

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  Difficulty 4/5 3-5 days Newbie friendliness 34/100

  wasmerio/edgejs#186 · Opened Nov 12, 2026

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• WASIX: `path_remove_directory` answers ENOENT for a directory nothing has looked up

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  wasmerio/wasmer#7170 · Opened Nov 12, 2026

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• WASIX: `path_link` on a file system without hard links leaves a name that `unlink` cannot remove

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  wasmerio/wasmer#7169 · Opened Nov 12, 2026

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• structuredClone and postMessage drop integer-like keys, lose shared references, and fail on large values (WASIX)

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  Difficulty 4/5 3-5 days Newbie friendliness 44/100

  wasmerio/edgejs#185 · 1 comment · Opened Nov 12, 2026

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• fs.open with numeric flags 0 fails with EINVAL (WASIX)

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  Difficulty 2/5 1-3 hours Newbie friendliness 77/100

  wasmerio/edgejs#184 · Opened Nov 12, 2026

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• worker.cpuUsage() never settles on WASIX: a failed worker task calls ondone with a null argument

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  wasmerio/edgejs#183 · Opened Nov 12, 2026

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• Environment::RequestInterrupt reports failure for a request it has queued, and the caller frees it

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  Difficulty 3/5 1-2 days Newbie friendliness 75/100

  wasmerio/edgejs#182 · Opened Nov 12, 2026

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• wasix: every standard stream (and anything dup2'd onto 0-2) reads as a terminal

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  wasmerio/wasmer#7164 · Opened Nov 12, 2026

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• virtual-net: a closed LoopbackNetworking listener keeps its address (EADDRINUSE on rebind)

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  Difficulty 3/5 1-2 days Newbie friendliness 82/100

  wasmerio/wasmer#7163 · Opened Nov 12, 2026

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• Every MemoryView of a shared memory takes its RwLock twice

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  Difficulty 4/5 3-5 days Newbie friendliness 53/100

  wasmerio/wasmer#7162 · Opened Nov 12, 2026

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• A stopped Worker dispatches its next queued message, and the parent can hang in pthread_join for good

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  Difficulty 2/5 1-3 hours Newbie friendliness 82/100

  wasmerio/edgejs#181 · Opened Nov 11, 2026

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• Static site build error on npm ci

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  Difficulty 3/5 1-2 days Newbie friendliness 50/100

  wasmerio/wasmer#7155 · 1 comment · Opened Nov 10, 2026

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• Wasm (guest) <-> host function overhead

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  Difficulty 4/5 3-5 days Newbie friendliness 43/100

  wasmerio/wasmer#7153 · 4 comments · Opened Nov 9, 2026

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• A guest that dies of its own SIGTERM crashes or hangs the host process

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  wasmerio/wasmer-sdk#586 · Opened Nov 9, 2026

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• fd_close returns Success for preopened directories without closing the descriptor

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  Difficulty 3/5 1-2 days Newbie friendliness 56/100

  wasmerio/wasmer#7150 · Opened Nov 9, 2026

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• Track runtime requirements for the Go WASIX port

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

  wasmerio/wasmer#7125 · Opened Oct 29, 2026

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• any binaries(preferred) and installers?

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

  wasmerio/edgejs#177 · Opened Oct 27, 2026

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• `--safe` fails in nightly builds: binary looks for `wasmer/edgejs`, nightly publishes `syrusakbary/edgejs`

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  Difficulty 2/5 1-3 hours Newbie friendliness 55/100

  wasmerio/edgejs#167 · Opened Oct 19, 2026

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• `--volume .` fails for WASI preview 1 modules with "Could not check specified current directory at '/home'"

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  wasix

  Difficulty 4/5 3-5 days Newbie friendliness 47/100

  wasmerio/wasmer#7106 · Opened Oct 19, 2026

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• Mounting a host directory at `/` silently discards all writes from WASI preview 1 modules (regression)

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  wasmerio/wasmer#7105 · Opened Oct 19, 2026

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• Captured stdio still reports as a terminal (rest of wasmer#6425)

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  wasmerio/wasmer-sdk#555 · 1 comment · Opened Oct 12, 2026

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• stdout/stdin are no-op streams when they're pipes under WASIX

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  wasmerio/edgejs#166 · Opened Oct 12, 2026

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• WASIX pipes have no file type: fstat() gives st_mode 0

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  wasmerio/wasmer#7092 · Opened Oct 12, 2026

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• WASI poll_oneoff hangs for a zero-time clock subscription

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  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  wasmerio/wasmer#7082 · Opened Oct 7, 2026

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• Singlepass: cmpxchg relies on specific stack arrangement

  May be free again @marxin claimed this 39 days ago, and no pull request is open. Open

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  wasmerio/wasmer#7080 · 1 assignee · Opened Oct 5, 2026

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• Closed sandboxes running wasmer/edgejs keep ~50 MB each; memory is never released

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  wasmerio/wasmer-sdk#547 · 4 comments · Opened Oct 1, 2026

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• Python guests fail on Node < 22.19 (needs wasm exnref), but `engines` says `>=20`

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  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  wasmerio/wasmer-sdk#541 · 1 comment · Opened Sep 27, 2026

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• SIGPIPE in a pipeline leaves "Program recieved ... signal" spam in stderr

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  wasmerio/wasmer-sdk#540 · 1 comment · Opened Sep 27, 2026

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• `timeoutMs` fires late while the guest is sleeping

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  wasmerio/wasmer-sdk#539 · 1 comment · Opened Sep 27, 2026

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• Cranelift: host-thrown exception not caught by try_table, "uncaught exception"

  May be free again @marxin claimed this 44 days ago, and no pull request is open. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  wasmerio/wasmer#7037 · 1 comment · 1 assignee · Opened Sep 25, 2026

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• Feature request: HarmonyOS (鸿蒙) support for the Wasmer SDK

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

  wasmerio/wasmer-sdk#538 · 2 comments · Opened Sep 25, 2026

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• Could not run `wasmer/edgejs` use the latest wasmer cli

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  wasmerio/wasmer#7018 · 3 comments · Opened Sep 21, 2026

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• Store is not Send since version 7.0.0

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  wasmerio/wasmer#7001 · Opened Sep 10, 2026

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• Accept and handle build metadata in package versions

  May be free again @Arshia001 claimed this 64 days ago, and no pull request is open. Open

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  wasmerio/wasmer#6995 · 1 assignee · Opened Sep 9, 2026

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• Expose execution-stack headroom for cooperative guest error recovery (PostgreSQL embedding)

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

  wasmerio/wasmer#6994 · Opened Sep 8, 2026

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• Add a license to wasix-witx

  May be free again @Arshia001 claimed this 66 days ago, and no pull request is open. Open

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  wasmerio/wasmer#6980 · 1 assignee · Opened Sep 6, 2026

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• fd_filestat_set_times writes corrupted timestamps to the host: nanoseconds as seconds

  May be free again A pull request for this issue was closed without being merged. Open

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  Difficulty 2/5 1-3 hours Newbie friendliness 82/100

  wasmerio/wasmer#6973 · Opened Sep 3, 2026

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• path_filestat_set_times silently does nothing

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  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  wasmerio/wasmer#6972 · 1 comment · Opened Sep 3, 2026

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• Replace package override environment variables with a typed mapping

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  wasmerio/anybuild#101 · Opened Aug 27, 2026