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set no execution flag to protect cmdline

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This commit is contained in:
Stefan Lankes 2017-11-05 15:50:12 +01:00
parent 2686177729
commit 6ccefbba81
1 changed files with 2 additions and 1 deletions
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3
arch/x86/mm/page.c
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@ -331,7 +331,8 @@ int page_init(void)
while(((size_t) cmdline + i) <= ((size_t) cmdline + cmdsize))
{
page_map(((size_t) cmdline + i) & PAGE_MASK, ((size_t) cmdline + i) & PAGE_MASK, 1, PG_GLOBAL|PG_RW|PG_PRESENT);
page_map(((size_t) cmdline + i) & PAGE_MASK, ((size_t) cmdline + i) & PAGE_MASK,
1, PG_NX|PG_GLOBAL|PG_RW|PG_PRESENT);
i += PAGE_SIZE;
}
} else cmdline = 0;