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syscall: use SYS_EXIT_GROUP in CLONE_PIDFD feature check child
Inside Google we have seen issues with QEMU user mode failing to wake a parent waitid when this child exits with SYS_EXIT. This bug appears to not affect SYS_EXIT_GROUP. It is currently unclear if this is a general QEMU or specific to Google's configuration, but SYS_EXIT and SYS_EXIT_GROUP are semantically equivalent here, so we can use the latter here in case this is a general QEMU bug. For #68976. Change-Id: I34e51088c9a6b7493a060e2a719a3cc4a3d54aa0 Reviewed-on: https://go-review.googlesource.com/c/go/+/617417 Reviewed-by: Ian Lance Taylor <[email protected]> LUCI-TryBot-Result: Go LUCI <[email protected]>
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