From 3bdd6d5ad5f8f6719cc761127df4af64ff163c79 Mon Sep 17 00:00:00 2001 From: Marijn Suijten Date: Wed, 2 Feb 2022 11:05:28 +0100 Subject: [PATCH] config: android-recommended: Disable BPF_UNPRIV_DEFAULT_OFF for netd AOSP's `netd` process fails to start on Android S: E ClatdController: getClatEgress4MapFd() failure: Operation not permitted I netd : Initializing ClatdController: 410us E netd : Failed to start trafficcontroller: (Status[code: 1, msg: "Pinned map not accessible or does not exist: (/sys/fs/bpf/map_netd_cookie_tag_map): Operation not permitted"]) E netd : CRITICAL: sleeping 60 seconds, netd exiting with failure, crash loop likely! And on Android R: I ClatdController: 4.9+ kernel and device shipped with P - clat ebpf might work. E ClatdController: getClatEgressMapFd() failure: Operation not permitted I netd : Initializing ClatdController: 1409us E netd : Failed to start trafficcontroller: (Status[code: 1, msg: "Pinned map not accessible or does not exist: (/sys/fs/bpf/map_netd_cookie_tag_map): Operation not permitted"]) These permission issues are caused by 08389d888287 ("bpf: Add kconfig knob for disabling unpriv bpf by default") because AOSP does not provide netd the `SYS_ADMIN` capability, and also has no userspace support for the `BPF` capability yet. Cc: Amit Pundir Cc: Greg Kroah-Hartman Suggested-by: John Stultz [John suggested this in https://linaro.atlassian.net/browse/ACK-107?focusedCommentId=117382] Signed-off-by: Marijn Suijten Link: https://lore.kernel.org/r/20220202100528.190794-2-marijn.suijten@somainline.org Signed-off-by: Greg Kroah-Hartman --- kernel/configs/android-recommended.config | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/configs/android-recommended.config b/kernel/configs/android-recommended.config index 22bd76e43aca..e400fbbc8aba 100644 --- a/kernel/configs/android-recommended.config +++ b/kernel/configs/android-recommended.config @@ -1,4 +1,5 @@ # KEEP ALPHABETICALLY SORTED +# CONFIG_BPF_UNPRIV_DEFAULT_OFF is not set # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set # CONFIG_INPUT_MOUSE is not set # CONFIG_LEGACY_PTYS is not set