Messages in this thread Patch in this message | | | From | Marijn Suijten <> | Subject | [PATCH 2/2] config: android-recommended: Disable BPF_UNPRIV_DEFAULT_OFF for netd | Date | Wed, 2 Feb 2022 10:33:55 +0100 |
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From: Marijn Suijten <marijns95@gmail.com>
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 <amit.pundir@linaro.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: John Stultz <john.stultz@linaro.org> [John suggested this in https://linaro.atlassian.net/browse/ACK-107?focusedCommentId=117382] Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org> --- 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 -- 2.35.1
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