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Groups > linux.kernel > #1264167
| From | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] arm64: bpf: fix mod-by-zero case |
| Date | 2015-11-06 18:10 +0100 |
| Message-ID | <qrSGt-7lu-1@gated-at.bofh.it> (permalink) |
| References | <qrkEO-1Qt-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Nov 04, 2015 at 08:43:59PM -0800, Zi Shen Lim wrote:
> Turns out in the case of modulo by zero in a BPF program:
> A = A % X; (X == 0)
> the expected behavior is to terminate with return value 0.
>
> The bug in JIT is exposed by a new test case [1].
>
> [1] https://lkml.org/lkml/2015/11/4/499
>
> Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
> Reported-by: Yang Shi <yang.shi@linaro.org>
> Reported-by: Xi Wang <xi.wang@gmail.com>
> CC: Alexei Starovoitov <ast@plumgrid.com>
> CC: Catalin Marinas <catalin.marinas@arm.com>
> Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
> Cc: <stable@vger.kernel.org> # 3.18+
> ---
> This patch applies on top of "arm64: bpf: fix fiv-by-zero case" [2].
Both patches applied. Thanks.
--
Catalin
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[PATCH] arm64: bpf: fix mod-by-zero case Zi Shen Lim <zlim.lnx@gmail.com> - 2015-11-05 05:50 +0100 Re: [PATCH] arm64: bpf: fix mod-by-zero case Catalin Marinas <catalin.marinas@arm.com> - 2015-11-06 18:10 +0100
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