From: Lev Olshvang <levonshe@gmail.com>
To: keescook@chromium.orh
Cc: kernel-hardening@lists.openwall.com, Lev Olshvang <levonshe@gmail.com>
Subject: [PATCH v3 3/5] Hardening um: Forbid writes to read-only memory pages of a process
Date: Mon, 13 Apr 2020 18:32:09 +0300 [thread overview]
Message-ID: <20200413153211.29876-4-levonshe@gmail.com> (raw)
In-Reply-To: <20200413153211.29876-1-levonshe@gmail.com>
Signed-off-by: Lev Olshvang <levonshe@gmail.com>
---
arch/um/include/asm/mmu_context.h | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 3dcee05f950f..b4deb1bfbb68 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -8,7 +8,6 @@
#include <linux/sched.h>
#include <linux/mm_types.h>
-#include <linux/mm.h>
#include <asm/mmu.h>
@@ -30,12 +29,7 @@ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
bool write, bool execute, bool foreign)
{
/* by default, allow everything */
- if (likely(vma_write_allowed(vma, write, execute, foreign)))
- return true;
-
- pr_err_once("Error : PID[%d] %s writes to read only memory\n",
- current->tgid, current->comm);
- return false;
+ return true;
}
/*
--
2.17.1
next prev parent reply other threads:[~2020-04-13 15:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-13 15:32 [PATCH v3 0/5] hardening : prevent write to proces's read-only pages Lev Olshvang
2020-04-13 15:32 ` [PATCH v3 1/5] Hardening x86: Forbid writes to read-only memory pages of a process Lev Olshvang
2020-04-13 15:32 ` [PATCH v3 2/5] Hardening PowerPC: " Lev Olshvang
2020-04-13 15:32 ` Lev Olshvang [this message]
2020-04-13 15:32 ` [PATCH v3 4/5] Hardening unicore32: " Lev Olshvang
2020-04-13 15:32 ` [PATCH v3 5/5] Hardening : PPC book3s64: " Lev Olshvang
2020-04-13 17:13 ` [PATCH v3 0/5] hardening : prevent write to proces's read-only pages Kees Cook
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