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373304e44f
[ Upstream commit 73b9160d0d ]
Define vdso_start, vdso_end as array to avoid compile-time analysis error
for the case of built with CONFIG_FORTIFY_SOURCE.
and, since vdso_start, vdso_end are used in vdso.c only,
move extern-declaration from vdso.h to vdso.c.
If kernel is built with CONFIG_FORTIFY_SOURCE,
compile-time error happens at this code.
- if (memcmp(&vdso_start, "177ELF", 4))
The size of "&vdso_start" is recognized as 1 byte, but n is 4,
So that compile-time error is reported.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
32 lines
507 B
C
32 lines
507 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_VDSO_H
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#define __ASM_VDSO_H
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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struct mm_struct;
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#ifdef CONFIG_VDSO
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void arm_install_vdso(struct mm_struct *mm, unsigned long addr);
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extern unsigned int vdso_total_pages;
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#else /* CONFIG_VDSO */
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static inline void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
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{
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}
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#define vdso_total_pages 0
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#endif /* CONFIG_VDSO */
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* __ASM_VDSO_H */
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