Messages in this thread | | | Date | Sat, 2 Apr 2022 23:06:39 +0800 | Subject | Re: [PATCH bpf-next] bpf, arm64: sign return address for jited code | From | Xu Kuohai <> |
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On 4/2/2022 4:22 AM, Daniel Borkmann wrote: > On 3/18/22 11:29 AM, Xu Kuohai wrote: >> Sign return address for jited code when the kernel is built with pointer >> authentication enabled. >> >> 1. Sign lr with paciasp instruction before lr is pushed to stack. Since >> paciasp acts like landing pads for function entry, no need to insert >> bti instruction before paciasp. >> >> 2. Authenticate lr with autiasp instruction after lr is poped from stack. >> >> Signed-off-by: Xu Kuohai <xukuohai@huawei.com> > > This would need a rebase, but please also use the commit description to > provide > some more details how this inter-operates wrt BPF infra such as tail > calls and > BPF-2-BPF calls when we look back into this in few months from now. > > Thanks, > Daniel > .
updated in v2, thanks.
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