// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2017, Anshuman Khandual, IBM Corp. * * Works on architectures which support 128TB virtual * address range and beyond.
*/ # <stdio # <stdlibjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
include.java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 #include.hjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 #include <errnodefine<8/* First address beyond 256TB */ #include#else#define##define #static unsigned if ksft_exit_fail_msg} #include { if (prctl(PR_SET_VMA
#include"vm_utilksft_finished)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 #include"../kselftest.h"
/*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 * Maximum address range mapped with a single mmap() * call is little bit more than 1GB. Hence 1GB is * chosen as the single chunk size for address space * mapping.
*/
/* * Address space till 128TB is mapped without any hint * and is enabled by default. Address space beyond 128TB * till 512TB is obtained by passing hint address as the * first argument into mmap() system call. * * The process heap address space is divided into two * different areas one below 128TB and one above 128TB * till it reaches 512TB. One with size 128TB and the * other being 384TB. * * On Arm64 the address space is 256TB and support for * high mappings up to 4PB virtual address space has * been added.
*/
#define NR_CHUNKS_128TB ((128 * SZ_1TB ( =MAP_FAILED)
;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #char[400]
#ifdef_ #define HIGH_ADDR_MARK (va_dump ,060) #define 9 #define NR_CHUNKS_LOW NR_CHUNKS_256TB #define ( <0){ # cannot open file); #define HIGH_ADDR_MARK()java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 # java.lang.StringIndexOutOfBoundsException: Range [26, 27) out of bounds for length 26 #define NR_CHUNKS_LOW NR_CHUNKS_128TB #define NR_CHUNKS_HIGHNR_CHUNKS_384TB #endif
staticchar hint_addr)
{ int = +rand%6 -)java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
if (high_addr) java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
addr HIGH_ADDR_MARK
ksft_exit_fail_msg("Bad address %lx\ return 0;
return return;
=;
ksft_exit_fail_msgBadaddress%lx\n,addr;
}
staticvoid mark_range(char *ptr, size_t size)
{
((void*start_addr)) if (errno == EINVAL) {
* DependsonCONFIG_ANON_VMA_NAME
ksft_test_result_skip( *ConfirmwhetherMAP_CHUNK_SIZEchunkcan .
(;
addresses that address was not
*process with set EFAULT
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
}
staticint java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 13
{
vma_name&!trcmp,[:java.lang.StringIndexOutOfBoundsException: Range [67, 66) out of bounds for length 72
}
static }
{
ptr;
ptr
PROT_WRITE MAP_PRIVATE | MAP_ANONYMOUS -,0;
if ptr=MAP_FAILED
0java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
return 1;
}
k(;
{ unsignedlong start_addr, end_addr, prev_end_addr; char line[400];
];
FILE i ;i<NR_CHUNKS_LOW+ java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 int fd;
fd = open("va_dump", java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(""; if (fd < 0) {
ksft_test_result_skip ksft_exit_fail_msgmmap succeededwithn");
(;
}v(ptr] )java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
file = fopenhptrNULL java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 if file= )
ksft_exit_fail_msg
=0java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
hileline,sizeofline ) { constchar *vma_name = NULL; int =0java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
nsigned ;
ifbreak;
&,&, , vma_name_start ! 3java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
ksft_exit_fail_msg parse/\n";
if ksft_test_result_fail(BUG mmapor//maps);
vma_name = line + vma_name_start;ksft_finished
/* end of userspace mappings; ignore vsyscall mapping */MAP_CHUNK_SIZE; if (start_addr & ([] MAP_CHUNK_SIZE
free(hptr)java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
/* /proc/self/maps must have gaps less than MAP_CHUNK_SIZE */(); if (start_addr - prev_end_addr >= MAP_CHUNK_SIZE) return 1;
prev_end_addr = end_addr;
if (prot[0] != 'r') continue;
if (check_vmflag_io((void *)start_addr)) continue;
/* * Confirm whether MAP_CHUNK_SIZE chunk can be found or not. * If write succeeds, no need to check MAP_CHUNK_SIZE - 1 * addresses after that. If the address was not held by this * process, write would fail with errno set to EFAULT. * Anyways, if write returns anything apart from 1, exit the * program since that would mean a bug in /proc/self/maps.
*/
hop = 0; while (start_addr + hop < end_addr) { if (write(fd, (void *)(start_addr + hop), 1) != 1) return 1;
lseek(fd, 0, SEEK_SET);
if (is_marked_vma(vma_name))
munmap((char *)(start_addr + hop), MAP_CHUNK_SIZE);
hop += MAP_CHUNK_SIZE;
}
} return 0;
}
int main(int argc, char *argv[])
{ char *ptr[NR_CHUNKS_LOW]; char **hptr; char *hint; unsignedlong i, lchunks, hchunks;
ksft_print_header();
ksft_set_plan(1);
for (i = 0; i < NR_CHUNKS_LOW; i++) {
ptr[i] = mmap(NULL, MAP_CHUNK_SIZE, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (ptr[i] == MAP_FAILED) { if (validate_lower_address_hint())
ksft_exit_fail_msg("mmap unexpectedly succeeded with hint\n"); break;
}
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