// SPDX-License-Identifier: GPL-2.0
|
/*
|
* Copyright (C) 2019 ARM Limited
|
*
|
* Try to mangle the ucontext from inside a signal handler, mangling the
|
* DAIF bits in an illegal manner: this attempt must be spotted by Kernel
|
* and the test case is expected to be terminated via SEGV.
|
*
|
*/
|
|
#include "test_signals_utils.h"
|
#include "testcases.h"
|
|
static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si,
|
ucontext_t *uc)
|
{
|
ASSERT_GOOD_CONTEXT(uc);
|
|
/*
|
* This config should trigger a SIGSEGV by Kernel when it checks
|
* the sigframe consistency in valid_user_regs() routine.
|
*/
|
uc->uc_mcontext.pstate |= PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT;
|
|
return 1;
|
}
|
|
struct tdescr tde = {
|
.sanity_disabled = true,
|
.name = "MANGLE_PSTATE_INVALID_DAIF_BITS",
|
.descr = "Mangling uc_mcontext with INVALID DAIF_BITS",
|
.sig_trig = SIGUSR1,
|
.sig_ok = SIGSEGV,
|
.run = mangle_invalid_pstate_run,
|
};
|
