Messages in this thread | | | From | Jann Horn <> | Date | Fri, 22 Dec 2017 19:15:38 +0100 | Subject | Re: correctness of BPF stack size checking logic for multi-function programs? |
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On Fri, Dec 22, 2017 at 4:37 AM, Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote: > On Fri, Dec 22, 2017 at 02:14:45AM +0100, Jann Horn wrote: >> Hi! >> >> I saw the recently-added support for multiple functions in a single >> program in BPF. I've stumbled over something that looks like it might >> be a bug; I haven't verified it yet, but I thought I should give you a >> heads-up before this lands in a release in case I'm right. If I'm >> wrong, it might be worth adding a comment to stacksafe() that explains >> why. [...] > but I will rewrite a test case for it unless you beat me to it :)
I just sent a failing test case for the case I'm talking about, subject "[PATCH] bpf: selftest for late caller stack size increase".
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