linux-kernel - [PATCH v2 6/7] sparc/modules: Add rlimit for sparc modules

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Message-Id: <20181011233117.7883-7-rick.p.edgecombe@intel.com>
Date:   Thu, 11 Oct 2018 16:31:16 -0700
From:   Rick Edgecombe <rick.p.edgecombe@...el.com>
To:     kernel-hardening@...ts.openwall.com, daniel@...earbox.net,
        keescook@...omium.org, catalin.marinas@....com,
        will.deacon@....com, davem@...emloft.net, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, x86@...nel.org, arnd@...db.de,
        jeyu@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-arch@...r.kernel.org
Cc:     kristen@...ux.intel.com, dave.hansen@...el.com,
        arjan@...ux.intel.com, deneen.t.dock@...el.com,
        Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: [PATCH v2 6/7] sparc/modules: Add rlimit for sparc modules

This adds in the rlimit checking for the sparc module allocator.

This has not been tested.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
---
 arch/sparc/kernel/module.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index df39580f398d..24854fdfa7c3 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -44,10 +44,15 @@ void *module_alloc(unsigned long size)
 {
 	void *ret;
 
+	if (check_inc_mod_rlimit(size))
+		return NULL;
+
 	ret = module_map(size);
 	if (ret)
 		memset(ret, 0, size);
 
+	update_mod_rlimit(ret, size);
+
 	return ret;
 }
 
-- 
2.17.1