Stream: git-wasmtime

Topic: wasmtime / issue #3339 Intermittent failures in `wasi_tok...

view this post on Zulip Wasmtime GitHub notifications bot (Sep 13 2021 at 07:43):

bnjbvr opened issue #3339:

The wasi_tokio::poll_oneoff_files intermittently fails on the Apple M1, e.g. in https://buildkite.com/embark-studios/wasmtime-aarch64-apple-darwin/builds/115#7814f129-a70a-4027-82c4-5af72ba9c34b:

failures:

---- wasi_tokio::poll_oneoff_files stdout ----

preopen: "/var/folders/5z/j5zd8w8s7cg2hw5z78xxq0zm0000gp/T/wasi_common_poll_oneoff_files5PpIrI"
guest stderr:
thread 'main' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `2`: should return 2 events, got: [Event { userdata: 1, error: 0, type: 1, fd_readwrite: EventFdReadwrite { nbytes: 1, flags: 0 } }]', src/bin/poll_oneoff_files.rs:128:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

===

Error: error while testing Wasm module 'poll_oneoff_files'

Caused by:
    wasm trap: unreachable
    wasm backtrace:
        0: 0xa43d - <unknown>!__rust_start_panic
    note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable to may show more debugging information

thread 'wasi_tokio::poll_oneoff_files' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `0`: the test returned a termination value with a non-zero status code (1) which indicates a failure', /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:194:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

failures:
    wasi_tokio::poll_oneoff_files

view this post on Zulip Wasmtime GitHub notifications bot (Sep 13 2021 at 07:43):

bnjbvr labeled issue #3339:

The wasi_tokio::poll_oneoff_files intermittently fails on the Apple M1, e.g. in https://buildkite.com/embark-studios/wasmtime-aarch64-apple-darwin/builds/115#7814f129-a70a-4027-82c4-5af72ba9c34b:

failures:

---- wasi_tokio::poll_oneoff_files stdout ----

preopen: "/var/folders/5z/j5zd8w8s7cg2hw5z78xxq0zm0000gp/T/wasi_common_poll_oneoff_files5PpIrI"
guest stderr:
thread 'main' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `2`: should return 2 events, got: [Event { userdata: 1, error: 0, type: 1, fd_readwrite: EventFdReadwrite { nbytes: 1, flags: 0 } }]', src/bin/poll_oneoff_files.rs:128:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

===

Error: error while testing Wasm module 'poll_oneoff_files'

Caused by:
    wasm trap: unreachable
    wasm backtrace:
        0: 0xa43d - <unknown>!__rust_start_panic
    note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable to may show more debugging information

thread 'wasi_tokio::poll_oneoff_files' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `0`: the test returned a termination value with a non-zero status code (1) which indicates a failure', /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:194:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

failures:
    wasi_tokio::poll_oneoff_files

view this post on Zulip Wasmtime GitHub notifications bot (Sep 13 2021 at 16:39):

cfallin commented on issue #3339:

cc @sunfishcode -- IIRC this test has some timing-dependent nondeterminism. Thoughts on making it more robust here?

view this post on Zulip Wasmtime GitHub notifications bot (Sep 13 2021 at 16:50):

sunfishcode commented on issue #3339:

Hmm, it may make sense to make this test retry the poll if the first one doesn't return all the expected events. Because poll doesn't generally guarantee to return all the events at once, even if multiple events have occurred. I'll look into this.

view this post on Zulip Wasmtime GitHub notifications bot (Sep 13 2021 at 19:51):

sunfishcode commented on issue #3339:

I don't have a machine where the intermittent failure is visible, but I submitted #3346 with a speculative fix for this.

view this post on Zulip Wasmtime GitHub notifications bot (Sep 15 2021 at 16:40):

alexcrichton commented on issue #3339:

:pray:-ing this is good to go, so closing (can reopen if this arises again)

view this post on Zulip Wasmtime GitHub notifications bot (Sep 15 2021 at 16:40):

alexcrichton closed issue #3339:

The wasi_tokio::poll_oneoff_files intermittently fails on the Apple M1, e.g. in https://buildkite.com/embark-studios/wasmtime-aarch64-apple-darwin/builds/115#7814f129-a70a-4027-82c4-5af72ba9c34b:

failures:

---- wasi_tokio::poll_oneoff_files stdout ----

preopen: "/var/folders/5z/j5zd8w8s7cg2hw5z78xxq0zm0000gp/T/wasi_common_poll_oneoff_files5PpIrI"
guest stderr:
thread 'main' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `2`: should return 2 events, got: [Event { userdata: 1, error: 0, type: 1, fd_readwrite: EventFdReadwrite { nbytes: 1, flags: 0 } }]', src/bin/poll_oneoff_files.rs:128:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

===

Error: error while testing Wasm module 'poll_oneoff_files'

Caused by:
    wasm trap: unreachable
    wasm backtrace:
        0: 0xa43d - <unknown>!__rust_start_panic
    note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable to may show more debugging information

thread 'wasi_tokio::poll_oneoff_files' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `0`: the test returned a termination value with a non-zero status code (1) which indicates a failure', /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:194:5

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

failures:
    wasi_tokio::poll_oneoff_files

view this post on Zulip Wasmtime GitHub notifications bot (Sep 15 2021 at 17:05):

bnjbvr commented on issue #3339:

Sorry, forgot to follow up about this: I've ran the test 100 tests in debug and 100 tests in release mode and saw no failures. Thanks for the fix!

Last updated: Dec 23 2024 at 12:05 UTC