From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: <linux-mips@linux-mips.org>, <Zubair.Kakakhel@imgtec.com>,
<geert+renesas@glider.be>, <david.daney@cavium.com>,
<peterz@infradead.org>, <paul.gortmaker@windriver.com>,
<davidlohr@hp.com>, <macro@linux-mips.org>, <chenhc@lemote.com>,
<richard@nod.at>, <zajec5@gmail.com>, <james.hogan@imgtec.com>,
<keescook@chromium.org>, <alex@alex-smith.me.uk>,
<tglx@linutronix.de>, <blogic@openwrt.org>,
<jchandra@broadcom.com>, <paul.burton@imgtec.com>,
<qais.yousef@imgtec.com>, <linux-kernel@vger.kernel.org>,
<ralf@linux-mips.org>, <markos.chandras@imgtec.com>,
<dengcheng.zhu@imgtec.com>, <manuel.lauss@gmail.com>,
<akpm@linux-foundation.org>, <lars.persson@axis.com>
Subject: [PATCH v2 3/3] MIPS: set stack/data protection as non-executable
Date: Thu, 9 Oct 2014 13:00:26 -0700 [thread overview]
Message-ID: <20141009200026.31230.82569.stgit@linux-yegoshin> (raw)
In-Reply-To: <20141009195030.31230.58695.stgit@linux-yegoshin>
This is a last step of 3 patches which shift FPU emulation out of
stack into protected area. So, it disables a default executable stack.
Additionally, it sets a default data area non-executable protection.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
---
arch/mips/include/asm/page.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 3be8180..d49ba81 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -230,7 +230,7 @@ extern int __virt_addr_valid(const volatile void *kaddr);
#define virt_addr_valid(kaddr) \
__virt_addr_valid((const volatile void *) (kaddr))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
+#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE)
next prev parent reply other threads:[~2014-10-09 20:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-09 20:00 [PATCH v2 0/3] MIPS executable stack protection Leonid Yegoshin
2014-10-09 20:00 ` [PATCH v2 1/3] MIPS: mips_flush_cache_range is added Leonid Yegoshin
2014-10-09 20:00 ` [PATCH v2 2/3] MIPS: Setup an instruction emulation in VDSO protected page instead of user stack Leonid Yegoshin
2014-10-09 22:43 ` James Hogan
2014-10-09 23:10 ` Leonid Yegoshin
2014-10-09 23:40 ` James Hogan
2014-10-10 0:07 ` Leonid Yegoshin
2014-10-10 10:03 ` James Hogan
2014-10-10 10:24 ` Peter Zijlstra
2014-10-10 22:47 ` Leonid Yegoshin
2014-10-10 22:56 ` David Daney
2014-10-10 23:40 ` Leonid Yegoshin
2014-10-09 20:00 ` Leonid Yegoshin [this message]
2014-10-09 21:42 ` [PATCH v2 0/3] MIPS executable stack protection David Daney
2014-10-09 22:18 ` Leonid Yegoshin
2014-10-09 22:28 ` Paul Burton
2014-10-09 22:59 ` David Daney
2014-10-09 23:48 ` Leonid Yegoshin
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