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runtime: "fatal: morestack on g0" with PGO enabled on arm64 [1.21 backport] #62537

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gopherbot opened this issue Sep 8, 2023 · 2 comments
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runtime: "fatal: morestack on g0" with PGO enabled on arm64 [1.21 backport] #62537

gopherbot opened this issue Sep 8, 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
Go1.21.2

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@gopherbot
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@cherrymui requested issue #62120 to be considered for backport to the next 1.21 minor release.

@gopherbot please backport this to Go 1.21. This can cause programs built with PGO fail to run. There is no workaround except disabling PGO.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Sep 8, 2023
@gopherbot gopherbot mentioned this issue Sep 8, 2023
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@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Sep 8, 2023
@gopherbot gopherbot added this to the Go1.21.2 milestone Sep 8, 2023
@cherrymui cherrymui mentioned this issue Sep 8, 2023
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@gopherbot
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Change https://go.dev/cl/527055 mentions this issue: [release-branch.go1.21] runtime: increase g0 stack size in non-cgo case

@joedian joedian added the CherryPickApproved Used during the release process for point releases label Sep 20, 2023
@gopherbot gopherbot removed the CherryPickCandidate Used during the release process for point releases label Sep 20, 2023
gopherbot pushed a commit that referenced this issue Sep 22, 2023
@cherrymui
[release-branch.go1.21] runtime: increase g0 stack size in non-cgo case
cd671a1 
Currently, for non-cgo programs, the g0 stack size is 8 KiB on
most platforms. With PGO which could cause aggressive inlining in
the runtime, the runtime stack frames are larger and could
overflow the 8 KiB g0 stack. Increase it to 16 KiB. This is only
one per OS thread, so it shouldn't increase memory use much.

Updates #62120.
Updates #62489.
Fixes #62537.

Change-Id: I565b154517021f1fd849424dafc3f0f26a755cac
Reviewed-on: https://go-review.googlesource.com/c/go/+/526995
Reviewed-by: Michael Pratt <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
(cherry picked from commit c6d550a)
Reviewed-on: https://go-review.googlesource.com/c/go/+/527055
@gopherbot
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Closed by merging cd671a1 to release-branch.go1.21.

bradfitz pushed a commit to tailscale/go that referenced this issue Sep 25, 2023
@cherrymui @bradfitz
[release-branch.go1.21] runtime: increase g0 stack size in non-cgo case
6951745 
Currently, for non-cgo programs, the g0 stack size is 8 KiB on
most platforms. With PGO which could cause aggressive inlining in
the runtime, the runtime stack frames are larger and could
overflow the 8 KiB g0 stack. Increase it to 16 KiB. This is only
one per OS thread, so it shouldn't increase memory use much.

Updates golang#62120.
Updates golang#62489.
Fixes golang#62537.

Change-Id: I565b154517021f1fd849424dafc3f0f26a755cac
Reviewed-on: https://go-review.googlesource.com/c/go/+/526995
Reviewed-by: Michael Pratt <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
(cherry picked from commit c6d550a)
Reviewed-on: https://go-review.googlesource.com/c/go/+/527055
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