82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2019 Google LLC
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* Copyright (c) Linux Test Project, 2019-2021
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*/
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/*
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* Regression test for commit bb2964810233 ("crypto: vmac - separate tfm and
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* request context"). This test verifies that a VMAC transform can be used by
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* multiple concurrent hash requests without crashing the kernel. Based on the
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* reproducer from the commit message.
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*/
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#include <stdio.h>
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#include <sys/wait.h>
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#include "tst_test.h"
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#include "tst_af_alg.h"
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static void test_with_symm_enc_algs(const char *symm_enc_algname)
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{
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int algfd, reqfd;
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char buf[256] = { 0 };
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char vmac_algname[64];
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pid_t pid;
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int status;
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int i;
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sprintf(vmac_algname, "vmac64(%s)", symm_enc_algname);
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if (!tst_have_alg("hash", vmac_algname)) {
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sprintf(vmac_algname, "vmac(%s)", symm_enc_algname);
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if (!tst_have_alg("hash", vmac_algname))
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return;
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}
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algfd = tst_alg_setup("hash", vmac_algname, NULL, 16);
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tst_res(TINFO, "Starting vmac hashing test. May crash buggy kernels.");
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pid = SAFE_FORK();
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reqfd = tst_alg_accept(algfd);
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for (i = 0; i < 500000; i++)
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SAFE_WRITE(SAFE_WRITE_ALL, reqfd, buf, sizeof(buf));
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close(reqfd);
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if (pid != 0) {
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SAFE_WAIT(&status);
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if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
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tst_res(TPASS, "didn't crash");
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else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL)
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tst_res(TFAIL, "crashed");
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else
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tst_brk(TBROK, "child %s", tst_strstatus(status));
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close(algfd);
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}
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}
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/* try several different symmetric encryption algorithms */
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static const char * const symm_enc_algs[] = {
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"aes",
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"sm4",
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"sm4-generic",
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};
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static void do_test(unsigned int i)
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{
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test_with_symm_enc_algs(symm_enc_algs[i]);
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}
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static struct tst_test test = {
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.test = do_test,
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.tcnt = ARRAY_SIZE(symm_enc_algs),
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.forks_child = 1,
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.tags = (const struct tst_tag[]) {
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{"linux-git", "bb2964810233"},
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{}
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}
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};
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