[PATCH v2 4/7] arm64/modules: Add rlimit checking for arm64 modules
From: Rick Edgecombe <rick.p.edgecombe@intel.com>
Date: 2018-10-12 07:09:40
Also in:
linux-arm-kernel, linux-fsdevel, linux-mips, linux-s390, lkml, sparclinux
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
This adds in the rlimit checking for the arm64 module allocator. This has not been tested. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> --- arch/arm64/kernel/module.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
index f0f27aeefb73..ea9794f2f571 100644
--- a/arch/arm64/kernel/module.c
+++ b/arch/arm64/kernel/module.c@@ -39,6 +39,9 @@ void *module_alloc(unsigned long size) if (IS_ENABLED(CONFIG_ARM64_MODULE_PLTS)) gfp_mask |= __GFP_NOWARN; + if (check_inc_mod_rlimit(size)) + return NULL; + p = __vmalloc_node_range(size, MODULE_ALIGN, module_alloc_base, module_alloc_base + MODULES_VSIZE, gfp_mask, PAGE_KERNEL_EXEC, 0,
@@ -65,6 +68,8 @@ void *module_alloc(unsigned long size) return NULL; } + update_mod_rlimit(p, size); + return p; }
--
2.17.1