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From: Randy Dunlap <>
To: LKML <>, X86 ML <>,
	Andy Lutomirski <>
Cc: kbuild test robot <>
Subject: [PATCH] x86: fix pti Section Mismatch warning/error
Date: Sat, 1 Sep 2018 21:01:28 -0700
Message-ID: <> (raw)

From: Randy Dunlap <>

Fix the section mismatch warning in arch/x86/mm/pti.c:

WARNING: vmlinux.o(.text+0x6972a): Section mismatch in reference from the function pti_clone_pgtable() to the function .init.text:pti_user_pagetable_walk_pte()
The function pti_clone_pgtable() references
the function __init pti_user_pagetable_walk_pte().
This is often because pti_clone_pgtable lacks a __init
annotation or the annotation of pti_user_pagetable_walk_pte is wrong.
FATAL: modpost: Section mismatches detected.

Fixes: 85900ea51577 ("x86/pti: Map the vsyscall page if needed")

Reported-by: kbuild test robot <>
Signed-off-by: Randy Dunlap <>
Cc: Andy Lutomirski <>
Applies to mainline.

 arch/x86/mm/pti.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20180830.orig/arch/x86/mm/pti.c
+++ linux-next-20180830/arch/x86/mm/pti.c
@@ -248,7 +248,7 @@ static pmd_t *pti_user_pagetable_walk_pm
  * Returns a pointer to a PTE on success, or NULL on failure.
-static __init pte_t *pti_user_pagetable_walk_pte(unsigned long address)
+static pte_t *pti_user_pagetable_walk_pte(unsigned long address)
 	gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
 	pmd_t *pmd;

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-02  4:01 Randy Dunlap [this message]
2018-09-02  9:27 ` [tip:x86/urgent] x86/pti: Fix section mismatch warning/error tip-bot for Randy Dunlap

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