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121401425d
Summary: kmalloc is freed with kfree in the linux kernel. kmalloc support was added in r204832, but kfree was not. Adding kfree fixes incorrectly detected memory leaks. Reviewers: NoQ, nickdesaulniers, dcoughlin, Szelethus Reviewed By: NoQ, Szelethus Subscribers: xazax.hun, baloghadamsoftware, szepet, a.sidorin, mikhail.ramalho, Szelethus, donat.nagy, dkrupp, Charusso, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D64030 llvm-svn: 364875
59 lines
972 B
C
59 lines
972 B
C
// RUN: %clang_analyze_cc1 -triple x86_64-unknown-linux %s
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#include "Inputs/system-header-simulator.h"
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#define __GFP_ZERO 0x8000
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#define NULL ((void *)0)
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void *kmalloc(size_t, int);
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struct test {
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};
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void foo(struct test *);
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void test_zeroed() {
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struct test **list, *t;
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int i;
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list = kmalloc(sizeof(*list) * 10, __GFP_ZERO);
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if (list == NULL)
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return;
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for (i = 0; i < 10; i++) {
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t = list[i];
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foo(t);
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}
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kfree(list); // no-warning
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}
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void test_nonzero() {
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struct test **list, *t;
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int i;
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list = kmalloc(sizeof(*list) * 10, 0);
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if (list == NULL)
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return;
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for (i = 0; i < 10; i++) {
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t = list[i]; // expected-warning{{undefined}}
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foo(t);
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}
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kfree(list);
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}
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void test_indeterminate(int flags) {
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struct test **list, *t;
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int i;
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list = kmalloc(sizeof(*list) * 10, flags);
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if (list == NULL)
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return;
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for (i = 0; i < 10; i++) {
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t = list[i]; // expected-warning{{undefined}}
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foo(t);
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}
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kfree(list);
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}
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