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+id = 1929
+title = "regression: 7.0.0 breaks registering process subreaper on Apple silicon"
+state = "closed"
+created_at = "2023-10-11T08:17:54.578Z"
+closed_at = "2024-03-13T12:35:53.217Z"
+labels = ["Closed::Fixed", "linux-user"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1929"
+host-os = "Mac OS Sonoma 14.0"
+host-arch = "ARM / aarch64 (Apple M1)"
+qemu-version = "QEMU emulator version 8.1.1"
+guest-os = "Fedora CoreOS 38 (via podman)"
+guest-arch = "ARM / aarch64"
+description = """When running any container on the QEMU virtual guest that is using a utility like `tini` which is trying to register itself as a process subreaper I get an error message like this:
+
+```
+[FATAL tini (1)] PR_SET_CHILD_SUBREAPER is unavailable on this platform. Are you using Linux >= 3.4?
+```
+
+The issue has been observed by multiple people on Apple silicon Macs, e.g. in these issues:
+https://github.com/docker/for-mac/issues/6620#issuecomment-1694380189
+https://github.com/GoogleCloudPlatform/spark-on-k8s-operator/issues/1735"""
+reproduce = """1. Install QEMU 7.0.0+ on an Apple silicon MAC
+2. Run a virtual guest
+3. Try to register a process subreaper, e.g. like `tini -s` does"""
+additional = """the issue was introduced in QEMU 7.0.0 with this commit:
+https://gitlab.com/qemu-project/qemu/-/commit/220717a6f46a99031a5b1af964bbf4dec1310440
+
+tini readme talking about process subreaping:
+https://github.com/krallin/tini#subreaping"""