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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 ARM Limited
*
* Place a fake sigframe on the stack including an additional FPSIMD
* record: on sigreturn Kernel must spot this attempt and the test
* case is expected to be terminated via SEGV.
*/
#include <signal.h>
#include <ucontext.h>
#include "test_signals_utils.h"
#include "testcases.h"
struct fake_sigframe sf;
static int fake_sigreturn_duplicated_fpsimd_run(struct tdescr *td,
siginfo_t *si, ucontext_t *uc)
{
struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head;
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
head = get_starting_head(shead, sizeof(struct fpsimd_context) + HDR_SZ,
GET_SF_RESV_SIZE(sf), NULL);
if (!head)
return 0;
/* Add a spurious fpsimd_context */
head->magic = FPSIMD_MAGIC;
head->size = sizeof(struct fpsimd_context);
/* and terminate */
write_terminator_record(GET_RESV_NEXT_HEAD(head));
ASSERT_BAD_CONTEXT(&sf.uc);
fake_sigreturn(&sf, sizeof(sf), 0);
return 1;
}
struct tdescr tde = {
.name = "FAKE_SIGRETURN_DUPLICATED_FPSIMD",
.descr = "Triggers a sigreturn including two fpsimd_context",
.sig_ok = SIGSEGV,
.timeout = 3,
.run = fake_sigreturn_duplicated_fpsimd_run,
};
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