mirror of https://github.com/golang/go.git
1b49487692
To avoid allocation between entersyscall and exitsyscall in Plan 9, syscall error strings retrieved from the OS were being stored in a shared buffer for each M, leading to overwriting of error strings by subsequent syscalls, and potential confusion if exitsyscall switched to a different M. Instead, the error string is now retrieved to the G stack and then copied to a new allocated array after exitsyscall. A new test TestPlan9Syserr is provided to confirm the correction. Fixes #13770 Fixes #24921 Change-Id: I013c4a42baae80d03a5b61d828396527189f5551 Reviewed-on: https://go-review.googlesource.com/111195 Reviewed-by: David du Colombier <0intro@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: David du Colombier <0intro@gmail.com> |
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