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macOS: Don't inspect dead threadtls during exception handling. #50871
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Otherwise we may end up with the state of a dead thread, as the system IDs can alias. This can lead to an early return from the exception handler, resulting in e.g. safepoint exceptions being actually delivered to user code.
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LGTM
The bug that you found def makes me suspicious of broader TLS tearing in this code, but I think this is a good low-risk fix for back-porting until we can do a more complete review.
Co-authored-by: Jameson Nash <vtjnash@gmail.com>
macOS tests have been hanging on master as well, so seem unrelated. Which is too bad, as it's one of the 2 relevant runs for this PR; but at least macOS-aarch64 passed. |
Otherwise we may end up with the state of a dead thread, as the system IDs can alias. This can lead to an early return from the exception handler, resulting in e.g. safepoint exceptions being actually delivered to user code. --------- Co-authored-by: Jameson Nash <vtjnash@gmail.com> Co-authored-by: Cody Tapscott <topolarity@tapscott.me>
Otherwise we may end up with the state of a dead thread, as the system IDs can alias. This can lead to an early return from the exception handler, resulting in e.g. safepoint exceptions being actually delivered to user code. --------- Co-authored-by: Jameson Nash <vtjnash@gmail.com> Co-authored-by: Cody Tapscott <topolarity@tapscott.me>
Backported PRs: - [x] #50637 <!-- Remove SparseArrays legacy code --> - [x] #50665 <!-- print `@time` msg into print buffer --> - [x] #50523 <!-- Avoid generic call in most cases for getproperty --> - [x] #50635 <!-- `versioninfo()`: include build info and unofficial warning --> - [x] #50670 <!-- Make reinterpret specialize fully. --> - [x] #50666 <!-- include `--pkgimage=no` caches for stdlibs --> - [x] #50765 - [x] #50764 - [x] #50768 - [x] #50767 - [x] #50618 <!-- inference: continue const-prop' when concrete-eval returns non-inlineable --> - [x] #50689 <!-- Attach `tanpi` docstring to method --> - [x] #50671 <!-- Fix rdiv of complex lhs by real factorizations --> - [x] #50598 <!-- only limit types in stack traces in the REPL --> - [x] #50766 <!-- Don't partition alwaysinline functions --> - [x] #50771 <!-- re-allow non-string values in ENV `get!` --> - [x] #50682 <!-- Add fallback if we have make a weird GC decision. --> - [x] #50781 <!-- fix `bit_map!` with aliasing --> - [x] #50172 <!-- print feature flags used for matching pkgimage --> - [x] #50844 <!-- Bump OpenBLAS binaries to use the new GEMM multithreading threshold --> - [x] #50826 <!-- Update dependency builds --> - [x] #50845 <!-- fix #50438, use default pool for at-threads --> - [x] #50568 <!-- `Array(::AbstractRange)` should return an `Array` --> - [x] #50655 <!-- fix hashing regression. --> - [x] #50779 <!-- Minor refactor to image generation --> - [x] #50791 <!-- Make symbols internal in jl_create_native, and only externalize them when partitioning --> - [x] #50724 <!-- Merge opaque closure modules with the rest of the workqueue --> - [x] #50738 <!-- Add alignment to constant globals --> - [x] #50871 <!-- macOS: Don't inspect dead threadtls during exception handling. --> Need manual backport: Contains multiple commits, manual intervention needed: Non-merged PRs with backport label: - [ ] #50850 <!-- Remove weird Rational dispatch and add pi functions to list --> - [ ] #50823 <!-- Make ranges more robust with unsigned indexes. --> - [ ] #50809 <!-- Limit type-printing in MethodError --> - [ ] #50663 <!-- Fix Expr(:loopinfo) codegen --> - [ ] #50594 <!-- Disallow non-index Integer types in isassigned --> - [ ] #50385 <!-- Precompile pidlocks: add to NEWS and docs --> - [ ] #49805 <!-- Limit TimeType subtraction to AbstractDateTime -->
Backported PRs: - [x] #47782 <!-- Generalize Bool parse method to AbstractString --> - [x] #48634 <!-- Remove unused "deps" mechanism in internal sorting keywords [NFC] --> - [x] #49931 <!-- Lock finalizers' lists at exit --> - [x] #50064 <!-- Fix numbered prompt with input only with comment --> - [x] #50474 <!-- docs: Fix a `!!! note` which was miscapitalized --> - [x] #50516 <!-- Fix visibility of assert on GCC12/13 --> - [x] #50635 <!-- `versioninfo()`: include build info and unofficial warning --> - [x] #49915 <!-- Revert "Remove number / vector (#44358)" --> - [x] #50781 <!-- fix `bit_map!` with aliasing --> - [x] #50845 <!-- fix #50438, use default pool for at-threads --> - [x] #49031 <!-- Update inference.md --> - [x] #50289 <!-- Initialize prev_nold and nold in gc_reset_page --> - [x] #50559 <!-- Expand kwcall lowering positional default check to vararg --> - [x] #49582 <!-- Update HISTORY.md for `DelimitedFiles` --> - [x] #50341 <!-- invokelatest docs should say not exported before 1.9 --> - [x] #50525 <!-- only check that values are finite in `generic_lufact` when `check=true` --> - [x] #50444 <!-- Optimize getfield lowering to avoid boxing in some cases --> - [x] #50523 <!-- Avoid generic call in most cases for getproperty --> - [x] #50860 <!-- Add `Base.get_extension` to docs/API --> - [x] #50164 <!-- codegen: handle dead code with unsafe_store of FCA pointers --> - [x] #50568 <!-- `Array(::AbstractRange)` should return an `Array` --> - [x] #50871 <!-- macOS: Don't inspect dead threadtls during exception handling. --> Need manual backport: - [ ] #48542 <!-- Add docs on task-specific buffering using multithreading --> - [ ] #50591 <!-- build: fix various makefile bugs --> Non-merged PRs with backport label: - [ ] #50842 <!-- Avoid race conditions with recursive rm --> - [ ] #50823 <!-- Make ranges more robust with unsigned indexes. --> - [ ] #50663 <!-- Fix Expr(:loopinfo) codegen --> - [ ] #49716 <!-- Update varinfo() docstring signature --> - [ ] #49713 <!-- prevent REPL from erroring in numbered mode in some situations --> - [ ] #49573 <!-- Implement jl_cpu_pause on PPC64 --> - [ ] #48726 <!-- fix macro expansion of property destructuring --> - [ ] #48642 <!-- Use gc alloc instead of alloc typed in lowering --> - [ ] #48183 <!-- Don't use pkgimage for package if any includes fall in tracked path for coverage or alloc tracking --> - [ ] #48050 <!-- improve `--heap-size-hint` arg handling --> - [ ] #47615 <!-- Allow threadsafe access to buffer of type inference profiling trees -->
Otherwise we may end up with the state of a dead thread, as the system IDs can alias. This can lead to an early return from the exception handler, resulting in e.g. safepoint exceptions being actually delivered to user code.
Alternative to #50747, closes JuliaGPU/Metal.jl#225.