1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 ARM Limited
*
* Try to mangle the ucontext from inside a signal handler, toggling
* the execution state bit: 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 */
uc->uc_mcontext.pstate ^= PSR_MODE32_BIT;
return 1;
}
struct tdescr tde = {
.sanity_disabled = true,
.name = "MANGLE_PSTATE_INVALID_STATE_TOGGLE",
.descr = "Mangling uc_mcontext with INVALID STATE_TOGGLE",
.sig_trig = SIGUSR1,
.sig_ok = SIGSEGV,
.run = mangle_invalid_pstate_run,
};
|
