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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-02 04:41:10 -04:00
69050f8d6d
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org>
52 lines
977 B
C
52 lines
977 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/export.h>
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#include <linux/mm.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/sizes.h>
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#include <linux/io.h>
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#include <asm/page.h>
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#ifdef CONFIG_MIPS
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#include <asm/bootinfo.h>
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#endif
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struct foo {
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unsigned int bar;
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};
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static struct foo *foo;
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static int __init test_debug_virtual_init(void)
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{
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phys_addr_t pa;
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void *va;
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va = (void *)VMALLOC_START;
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pa = virt_to_phys(va);
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pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
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foo = kzalloc_obj(*foo, GFP_KERNEL);
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if (!foo)
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return -ENOMEM;
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pa = virt_to_phys(foo);
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va = foo;
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pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
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return 0;
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}
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module_init(test_debug_virtual_init);
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static void __exit test_debug_virtual_exit(void)
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{
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kfree(foo);
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}
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module_exit(test_debug_virtual_exit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");
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