Stream: git-wasmtime

Topic: wasmtime / issue #5696 Cranelift panics on a shift right ...

Wasmtime GitHub notifications bot (Feb 02 2023 at 21:11):

alexcrichton opened issue #5696:

Given this input wasm:

(module
  (type (;0;) (func (param i64)))
  (func (;0;) (type 0) (param i64)
    i64.const 32
    i64.const -19
    i64.shr_u
    call 0
  )
)

wasmtime panics with:

$ cargo run -q compile foo.wasm
thread '<unnamed>' panicked at 'attempt to shift right with overflow', cranelift/codegen/src/opts.rs:89:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

cc @fitzgen this is connected to https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55588 which you mentioned would be fixed by https://github.com/bytecodealliance/wasmtime/pull/5684 but I think it's still persistent on main

Wasmtime GitHub notifications bot (Feb 02 2023 at 21:11):

alexcrichton labeled issue #5696:

Given this input wasm:

(module
  (type (;0;) (func (param i64)))
  (func (;0;) (type 0) (param i64)
    i64.const 32
    i64.const -19
    i64.shr_u
    call 0
  )
)

wasmtime panics with:

$ cargo run -q compile foo.wasm
thread '<unnamed>' panicked at 'attempt to shift right with overflow', cranelift/codegen/src/opts.rs:89:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

cc @fitzgen this is connected to https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55588 which you mentioned would be fixed by https://github.com/bytecodealliance/wasmtime/pull/5684 but I think it's still persistent on main

Wasmtime GitHub notifications bot (Feb 02 2023 at 21:46):

jameysharp commented on issue #5696:

This will be fixed once we finish #5695. It wasn't related to #5684.

Wasmtime GitHub notifications bot (Feb 03 2023 at 00:13):

fitzgen closed issue #5696:

Given this input wasm:

(module
  (type (;0;) (func (param i64)))
  (func (;0;) (type 0) (param i64)
    i64.const 32
    i64.const -19
    i64.shr_u
    call 0
  )
)

wasmtime panics with:

$ cargo run -q compile foo.wasm
thread '<unnamed>' panicked at 'attempt to shift right with overflow', cranelift/codegen/src/opts.rs:89:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

cc @fitzgen this is connected to https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55588 which you mentioned would be fixed by https://github.com/bytecodealliance/wasmtime/pull/5684 but I think it's still persistent on main

Last updated: Dec 23 2024 at 12:05 UTC