| // 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)) |
| 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, |
| }; |