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| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2019-03-07 16:40:48 +0000 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2019-03-07 16:46:02 +0000 |
| commit | 7632dede7b9b3b2be609866c6f814ae4d3aa079b (patch) | |
| tree | 92c3e7757690a8b6a96d35c753fff7979cc102ca | |
| parent | gtest: build fix for NetBSD (diff) | |
| download | monero-7632dede7b9b3b2be609866c6f814ae4d3aa079b.tar.xz | |
crypto: fix PaX issue on NetBSD with CNv4 JIT
| -rw-r--r-- | src/crypto/CryptonightR_JIT.c | 13 | ||||
| -rw-r--r-- | src/crypto/slow-hash.c | 20 |
2 files changed, 24 insertions, 9 deletions
diff --git a/src/crypto/CryptonightR_JIT.c b/src/crypto/CryptonightR_JIT.c index 68258a959..ee8f3f36f 100644 --- a/src/crypto/CryptonightR_JIT.c +++ b/src/crypto/CryptonightR_JIT.c @@ -4,6 +4,9 @@ #include <string.h> #include <stdio.h> #include <unistd.h> +#if !(defined(_MSC_VER) || defined(__MINGW32__)) +#include <sys/mman.h> +#endif #include "int-util.h" #include "hash-ops.h" @@ -58,6 +61,11 @@ int v4_generate_JIT_code(const struct V4_Instruction* code, v4_random_math_JIT_f uint8_t* JIT_code = (uint8_t*) buf; const uint8_t* JIT_code_end = JIT_code + buf_size; +#if !(defined(_MSC_VER) || defined(__MINGW32__)) + if (mprotect((void*)buf, buf_size, PROT_READ | PROT_WRITE)) + return 1; +#endif + APPEND_CODE(prologue, sizeof(prologue)); uint32_t prev_rot_src = 0xFFFFFFFFU; @@ -101,6 +109,11 @@ int v4_generate_JIT_code(const struct V4_Instruction* code, v4_random_math_JIT_f APPEND_CODE(epilogue, sizeof(epilogue)); +#if !(defined(_MSC_VER) || defined(__MINGW32__)) + if (mprotect((void*)buf, buf_size, PROT_READ | PROT_EXEC)) + return 1; +#endif + __builtin___clear_cache((char*)buf, (char*)JIT_code); return 0; diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c index 6bdc1b28c..a9c776be5 100644 --- a/src/crypto/slow-hash.c +++ b/src/crypto/slow-hash.c @@ -756,10 +756,10 @@ void slow_hash_allocate_state(void) #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \ defined(__DragonFly__) || defined(__NetBSD__) hp_state = mmap(0, MEMORY, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANON, 0, 0); + MAP_PRIVATE | MAP_ANON, -1, 0); #else hp_state = mmap(0, MEMORY, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, 0, 0); + MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0); #endif if(hp_state == MAP_FAILED) hp_state = NULL; @@ -778,11 +778,16 @@ void slow_hash_allocate_state(void) #else #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \ defined(__DragonFly__) || defined(__NetBSD__) - hp_jitfunc_memory = mmap(0, 4096 + 4095, PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_PRIVATE | MAP_ANON, 0, 0); +#ifdef __NetBSD__ +#define RESERVED_FLAGS PROT_MPROTECT(PROT_EXEC) #else - hp_jitfunc_memory = mmap(0, 4096 + 4095, PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); +#define RESERVED_FLAGS 0 +#endif + hp_jitfunc_memory = mmap(0, 4096 + 4096, PROT_READ | PROT_WRITE | RESERVED_FLAGS, + MAP_PRIVATE | MAP_ANON, -1, 0); +#else + hp_jitfunc_memory = mmap(0, 4096 + 4096, PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); #endif if(hp_jitfunc_memory == MAP_FAILED) hp_jitfunc_memory = NULL; @@ -794,9 +799,6 @@ void slow_hash_allocate_state(void) hp_jitfunc_memory = malloc(4096 + 4095); } hp_jitfunc = (v4_random_math_JIT_func)((size_t)(hp_jitfunc_memory + 4095) & ~4095); -#if !(defined(_MSC_VER) || defined(__MINGW32__)) - mprotect(hp_jitfunc, 4096, PROT_READ | PROT_WRITE | PROT_EXEC); -#endif } /** |