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    SubjectRe: [PATCH 5.15 000/846] 5.15.17-rc1 review
    On Thu, Jan 27, 2022 at 06:01:53PM +0530, Naresh Kamboju wrote:
    > On Wed, 26 Jan 2022 at 21:05, Alan Maguire <alan.maguire@oracle.com> wrote:
    > >
    > > > Regressions detected on arm, arm64, i386, x86 on 5.15 and 5.10
    > > >
    > > > > >
    > > > > > This is one from arm64:
    > > > > > /builds/linux/arch/arm64/mm/extable.c: In function 'fixup_exception':
    > > > > > /builds/linux/arch/arm64/mm/extable.c:17:13: error: implicit declaration of function 'in_bpf_jit' [-Werror=implicit-function-declaration]
    > > > > > 17 | if (in_bpf_jit(regs))
    > > > > > | ^~~~~~~~~~
    > > > > > cc1: some warnings being treated as errors
    > > > > > make[3]: *** [/builds/linux/scripts/Makefile.build:277: arch/arm64/mm/extable.o] Error 1
    > > > >
    > > > > Bisection here pointed to "arm64/bpf: Remove 128MB limit for BPF JIT programs". Reverting made the build succeed.
    > > >
    > > > arm64/bpf: Remove 128MB limit for BPF JIT programs
    > > > commit b89ddf4cca43f1269093942cf5c4e457fd45c335 upstream.
    > > >
    > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
    > > >
    > >
    > > Thanks for the report!
    > >
    > > This one needs slightly different handling on 5.15. Russell had a 5.15
    > > patch for this (where BPF exception handling was still handled separately)
    > > and I've included it below. I verified it applies cleanly to the
    > > linux-5.15.y branch and builds. I'd suggest either skipping backport of
    > > this fix to stable completely, or just applying the below to 5.15 and
    > > skipping further backports.
    >
    > Build test pass with this patch on stable/linux-5.15.y.

    Great, thanks!

    I'll queue this up now.

    greg k-h

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