65679cfeb4
Reintroduce the urandom fallback, but this time with a robust set of tests all pointing guns at each other, including a seccomp'd respawn simulating the lack of getrandom, to make sure the fallback both works and is never hit unexpectedly. Unlike the Go 1.23 fallback, the new one only triggers on ENOSYS (which is cached by unix.GetRandom) and doesn't handle the EAGAIN errors we never got an explanation for. We still crash the program from Read if we have to go to /dev/urandom and we fail to open it. For #67001 Updates #66821 Tested on legacy SlowBots (without plan9 and illumos, which don't work): TRY=aix-ppc64,dragonfly-amd64,freebsd-amd64,freebsd-386,netbsd-amd64 Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64_14,gotip-solaris-amd64,gotip-js-wasm,gotip-wasip1-wasm_wasmtime,gotip-wasip1-wasm_wazero,gotip-windows-amd64,gotip-windows-386,gotip-linux-386,gotip-linux-amd64-longtest-race,gotip-linux-amd64-boringcrypto Change-Id: Idecc96a18cd6363087f5b2a4671c6fd1c41a3b0e Reviewed-on: https://go-review.googlesource.com/c/go/+/608175 Reviewed-by: Daniel McCarney <daniel@binaryparadox.net> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Roland Shoemaker <roland@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> |
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