| Date | Wed, 27 May 2020 17:55:47 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 10/23] maccess: unify the probe kernel arch hooks |
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On Thu, 21 May 2020 17:22:48 +0200 Christoph Hellwig <hch@lst.de> wrote:
> Currently architectures have to override every routine that probes > kernel memory, which includes a pure read and strcpy, both in strict > and not strict variants. Just provide a single arch hooks instead to > make sure all architectures cover all the cases.
Fix a buildo.
--- a/arch/x86/mm/maccess.c~maccess-unify-the-probe-kernel-arch-hooks-fix +++ a/arch/x86/mm/maccess.c @@ -29,6 +29,6 @@ bool probe_kernel_read_allowed(const voi { if (!strict) return true; - return (unsigned long)vaddr >= TASK_SIZE_MAX; + return (unsigned long)unsafe_src >= TASK_SIZE_MAX; } #endif _
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