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runtime: execution halts with goroutines stuck in runtime.gopark (protocol error E08 during memory read for packet) [1.21 backport] #62019

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gopherbot opened this issue Aug 14, 2023 · 2 comments
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runtime: execution halts with goroutines stuck in runtime.gopark (protocol error E08 during memory read for packet) [1.21 backport] #62019

gopherbot opened this issue Aug 14, 2023 · 2 comments
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CherryPickApproved Used during the release process for point releases compiler/runtime Issues related to the Go compiler and/or runtime. FrozenDueToAge
Milestone
Go1.21.1

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@gopherbot
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@dr2chase requested issue #61768 to be considered for backport to the next 1.21 minor release.

@gopherbot please open the backport tracking issues. This is an annoying bug, possible cause of flakes, with a targeted fix.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Aug 14, 2023
@gopherbot gopherbot mentioned this issue Aug 14, 2023
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@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Aug 14, 2023
@gopherbot gopherbot added this to the Go1.21.1 milestone Aug 14, 2023
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Change https://go.dev/cl/519375 mentions this issue: runtime: profiling on Darwin cannot use blocking reads

@dmitshur dmitshur added CherryPickApproved Used during the release process for point releases and removed CherryPickCandidate Used during the release process for point releases labels Aug 16, 2023
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Closed by merging 6634ce2 to release-branch.go1.21.

gopherbot pushed a commit that referenced this issue Aug 17, 2023
@dr2chase @gopherbot
[release-branch.go1.21] runtime: profiling on Darwin cannot use block…
6634ce2 
…ing reads

On Darwin (and assume also on iOS but not sure), notetsleepg
cannot be called in a signal-handling context.  Avoid this
by disabling block reads on Darwin.

An alternate approach was to add "sigNote" with a pipe-based
implementation on Darwin, but that ultimately would have required
at least one more linkname between runtime and syscall to avoid
racing with fork and opening the pipe, so, not.

Fixes #62019.
Updates #61768.

Change-Id: I0e8dd4abf9a606a3ff73fc37c3bd75f55924e07e
Reviewed-on: https://go-review.googlesource.com/c/go/+/518836
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
(cherry picked from commit c6ee8e3)
Reviewed-on: https://go-review.googlesource.com/c/go/+/519375
Reviewed-by: Austin Clements <austin@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
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