bjorn3 (Jul 05 2024 at 15:10): bjorn3 (Jul 05 2024 at 15:10):In https://github.com/bytecodealliance/wasmtime/pull/8903 I was confused for quite a while why the first commit would cause a segfault. Turns out that it also segfaults with the current commit on the main branch. How did CI pass for it to be merged?
Alex Crichton (Jul 08 2024 at 14:24):CI turns on optimizations and disables incremental for cross-compiled tests, which might explain a crash locally but not on CI?
Alex Crichton (Jul 08 2024 at 14:24):The command you pasted in the PR passes locally for me though on main
Alex Crichton (Jul 08 2024 at 14:24):so it may also depend on QEMU version? In the past that's sometimes been a bit finnicky as to some versions fault and some don't and we never bottomed it out
bjorn3 (Jul 08 2024 at 17:36):I got the crash for the main branch while running natively on arm64.
bjorn3 (Jul 08 2024 at 17:37):I was using debug mode with incr comp enabled though.
bjorn3 (Jul 08 2024 at 17:47):Reproduces in release mode too:
gh-bjorn3@dev-desktop-eu-1:~/wasmtime$ git rev-parse HEAD
9e22c4e762c78cb6273bb863dbbb03b7d9795e22
gh-bjorn3@dev-desktop-eu-1:~/wasmtime$ git status
On branch main
Your branch is up to date with 'origin/main'.
nothing to commit, working tree clean
gh-bjorn3@dev-desktop-eu-1:~/wasmtime$ cargo test --release --test wast -- --format=pretty --test-threads 1 -- Cranelift/pooling/tests/misc_testsuite/custom-page-sizes/custom-page-sizes.wast
Finished `release` profile [optimized] target(s) in 0.27s
Running tests/wast.rs (target/release/deps/wast-18d73d9165bc244a)
running 1 test
test Cranelift/pooling/tests/misc_testsuite/custom-page-sizes/custom-page-sizes.wast ... error: test failed, to rerun pass `--test wast`
Caused by:
process didn't exit successfully: `/home/gh-bjorn3/wasmtime/target/release/deps/wast-18d73d9165bc244a --format=pretty --test-threads 1 -- Cranelift/pooling/tests/misc_testsuite/custom-page-sizes/custom-page-sizes.wast` (signal: 11, SIGSEGV: invalid memory reference)
Rebased https://github.com/bytecodealliance/wasmtime/pull/8903 to see if that is enough to make CI pass for it.
Alex Crichton (Jul 08 2024 at 17:58):do you have anything in ~/.cargo/config.toml that would affect codegen or something like that
Alex Crichton (Jul 08 2024 at 17:58):on aarch64-apple-darwin the command above works for me
Alex Crichton (Jul 08 2024 at 17:58):same commit
bjorn3 (Jul 08 2024 at 19:00):I don't have a ~/.cargo/config.toml.
bjorn3 (Jul 08 2024 at 19:00):I'm running on linux.
Alex Crichton (Jul 08 2024 at 19:14):on arm64 linux I can also reproduce by simply trying to instantiate this module
bjorn3 (Jul 08 2024 at 19:20):https://github.com/bytecodealliance/wasmtime/pull/8903 passes CI after the rebase.
Alex Crichton (Jul 08 2024 at 19:54):I think CI passes due to WASMTIME_TEST_NO_HOG_MEMORY=1, still digging
Alex Crichton (Jul 08 2024 at 20:21):https://github.com/bytecodealliance/wasmtime/pull/8918 is at least one problem
Last updated: Oct 23 2024 at 20:03 UTC