linux-kernel - [PATCH] x86/mm: Set __vmalloc_start_set in numa

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Date:   Mon,  8 May 2017 14:23:16 -0700
From:   Laura Abbott <labbott@...hat.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Laura Abbott <labbott@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>
Subject: [PATCH] x86/mm: Set __vmalloc_start_set in numa_32.c

__vmalloc_start_set currently only gets set in initmem_init when
!CONFIG_NEED_MULTIPLE_NODES. This currently breaks detection of vmalloc
address with virt_addr_valid with CONFIG_NEED_MULTIPLE_NODES=y.
Set __vmalloc_start_set appropriately for that case as well.

Fixes: dc16ecf7fd1f ("x86-32: use specific __vmalloc_start_set flag in __virt_addr_valid")q
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Laura Abbott <labbott@...hat.com>
---
 arch/x86/mm/numa_32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 6b7ce62..aca6295 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -100,5 +100,6 @@ void __init initmem_init(void)
 	printk(KERN_DEBUG "High memory starts at vaddr %08lx\n",
 			(ulong) pfn_to_kaddr(highstart_pfn));
 
+	__vmalloc_start_set = true;
 	setup_bootmem_allocator();
 }
-- 
2.7.4