Messages in this thread | | | From | Atish Patra <> | Date | Tue, 13 Oct 2020 22:24:49 -0700 | Subject | Re: [PATCH 4/5] RISC-V: Protect .init.text & .init.data |
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On Tue, Oct 13, 2020 at 6:21 PM Jim Wilson <jimw@sifive.com> wrote: > > On Tue, Oct 13, 2020 at 3:25 PM Atish Patra <atishp@atishpatra.org> wrote: > > This happens only when copy_from_user is called from function that is > > annotated with __init. > > Adding Kito & Jim for their input > > > > @kito, @Jim: Please let me know if I should create a issue in > > riscv-gnu-toolchain repo or somewhere else. > > I can't do anything useful without a testcase that I can use to > reproduce the problem. The interactions here are complex, so pointing > at lines of code or kernel config options doesn't give me any useful > info. > > Relaxation can convert calls to a jal. I don't know of any open bugs > in this area that can generate relocation errors. if it is a > relaxation error then turning off relaxation should work around the > problem as you suggested. > > A kernel build problem is serious. I think this is worth a bug > report. FSF binutils or riscv-gnu-toolchain is fine. >
I have created an issue with detailed descriptions and reproduction steps. Please let me know if you need anything else.
> Jim
-- Regards, Atish
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