[Crash-utility] [PATCH RFC 05/14] x86_64: clarify logical operator precedence
Dave Anderson
anderson at redhat.com
Mon Oct 30 18:23:49 UTC 2017
A fix has been queued for crash-7.2.1:
https://github.com/crash-utility/crash/commit/0f40db8fbac538ea448bbb2beb44912e4c43a54a
Thanks,
Dave
----- Original Message -----
> Signed-off-by: Oleksandr Natalenko <oleksandr at redhat.com>
> ---
> x86_64.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/x86_64.c b/x86_64.c
> index 2f9e6db..7b25e60 100644
> --- a/x86_64.c
> +++ b/x86_64.c
> @@ -2086,7 +2086,7 @@ x86_64_kvtop(struct task_context *tc, ulong kvaddr,
> physaddr_t *paddr, int verbo
> }
>
> start_vtop_with_pagetable:
> - if (!(*pml4) & _PAGE_PRESENT)
> + if ((!(*pml4)) & _PAGE_PRESENT)
> goto no_kpage;
> pgd_paddr = (*pml4) & PHYSICAL_PAGE_MASK;
> FILL_PGD(pgd_paddr, PHYSADDR, PAGESIZE());
> @@ -2187,7 +2187,7 @@ x86_64_kvtop_xen_wpt(struct task_context *tc, ulong
> kvaddr, physaddr_t *paddr, i
> fprintf(fp, "PML4 DIRECTORY: %lx\n", vt->kernel_pgd[0]);
> fprintf(fp, "PAGE DIRECTORY: %lx [machine]\n", *pml4);
> }
> - if (!(*pml4) & _PAGE_PRESENT)
> + if ((!(*pml4)) & _PAGE_PRESENT)
> goto no_kpage;
> pgd_paddr = (*pml4) & PHYSICAL_PAGE_MASK;
> pgd_paddr = xen_m2p(pgd_paddr);
> --
> 2.14.3
>
>
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