kselftest: arm64: fake_sigreturn_misaligned_sp
Add a simple fake_sigreturn testcase which places a valid sigframe on a non-16 bytes aligned SP. Expects a SIGSEGV on test PASS. Reviewed-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
parent
49978aa8f0
commit
3f484ce375
|
@ -0,0 +1,37 @@
|
||||||
|
// SPDX-License-Identifier: GPL-2.0
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2019 ARM Limited
|
||||||
|
*
|
||||||
|
* Place a fake sigframe on the stack at a misaligned SP: 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_misaligned_run(struct tdescr *td,
|
||||||
|
siginfo_t *si, ucontext_t *uc)
|
||||||
|
{
|
||||||
|
/* just to fill the ucontext_t with something real */
|
||||||
|
if (!get_current_context(td, &sf.uc))
|
||||||
|
return 1;
|
||||||
|
|
||||||
|
/* Forcing sigframe on misaligned SP (16 + 3) */
|
||||||
|
fake_sigreturn(&sf, sizeof(sf), 3);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct tdescr tde = {
|
||||||
|
.name = "FAKE_SIGRETURN_MISALIGNED_SP",
|
||||||
|
.descr = "Triggers a sigreturn with a misaligned sigframe",
|
||||||
|
.sig_ok = SIGSEGV,
|
||||||
|
.timeout = 3,
|
||||||
|
.run = fake_sigreturn_misaligned_run,
|
||||||
|
};
|
Loading…
Reference in a new issue