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/*
* Copyright (c) 2014 HockeyApp, Bit Stadium GmbH.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#import "CRLCrashNXPage.h"
#import <sys/mman.h>
@implementation CRLCrashNXPage
- (NSString *)category { return @"SIGSEGV"; }
- (NSString *)title { return @"Jump into an NX page"; }
- (NSString *)desc { return @"Call a function pointer to memory in a non-executable page."; }
static void __attribute__((noinline)) real_NXcrash(void)
{
void *ptr = mmap(NULL, (size_t)getpagesize(), PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
if (ptr != MAP_FAILED) {
((void (*)(void))ptr)();
}
munmap(ptr, (size_t)getpagesize());
}
- (void)crash
{
real_NXcrash();
}
@end