diff options
author | van Hauser <vh@thc.org> | 2021-01-18 20:18:18 +0100 |
---|---|---|
committer | van Hauser <vh@thc.org> | 2021-01-18 20:18:18 +0100 |
commit | 0b545aaeb45141e91273f2358ec457293c341c92 (patch) | |
tree | 1daa2eef3c079df2a737832d92a02ff05bb56c96 | |
parent | 94a15b8ca790a87d88c7513282250257f32a48c0 (diff) | |
download | afl++-0b545aaeb45141e91273f2358ec457293c341c92.tar.gz |
use enums, support cmplog map collisions
-rw-r--r-- | include/cmplog.h | 8 | ||||
-rw-r--r-- | include/config.h | 2 | ||||
-rw-r--r-- | include/types.h | 47 | ||||
-rw-r--r-- | instrumentation/afl-compiler-rt.o.c | 201 | ||||
-rw-r--r-- | instrumentation/cmplog-instructions-pass.cc | 4 | ||||
-rw-r--r-- | instrumentation/llvm-ngram-coverage.h | 2 | ||||
-rw-r--r-- | src/afl-fuzz-redqueen.c | 129 |
7 files changed, 276 insertions, 117 deletions
diff --git a/include/cmplog.h b/include/cmplog.h index 6392c503..878ed60c 100644 --- a/include/cmplog.h +++ b/include/cmplog.h @@ -38,17 +38,17 @@ #define SHAPE_BYTES(x) (x + 1) -#define CMP_TYPE_INS 0 -#define CMP_TYPE_RTN 1 +#define CMP_TYPE_INS 1 +#define CMP_TYPE_RTN 2 struct cmp_header { unsigned hits : 24; unsigned id : 24; unsigned shape : 5; - unsigned type : 1; + unsigned type : 2; unsigned attribute : 4; - unsigned reserved : 6; + unsigned reserved : 5; } __attribute__((packed)); diff --git a/include/config.h b/include/config.h index c0cd0ef1..c9c4a677 100644 --- a/include/config.h +++ b/include/config.h @@ -23,8 +23,6 @@ #ifndef _HAVE_CONFIG_H #define _HAVE_CONFIG_H -#include "types.h" - /* Version string: */ // c = release, d = volatile github dev, e = experimental branch diff --git a/include/types.h b/include/types.h index d5c31597..7b94fb83 100644 --- a/include/types.h +++ b/include/types.h @@ -25,12 +25,15 @@ #include <stdint.h> #include <stdlib.h> +#include "config.h" -typedef uint8_t u8; -typedef uint16_t u16; -typedef uint32_t u32; +typedef uint8_t u8; +typedef uint16_t u16; +typedef uint32_t u32; +#ifdef WORD_SIZE_64 typedef unsigned __int128 uint128_t; typedef uint128_t u128; +#endif /* Extended forkserver option values */ @@ -59,12 +62,14 @@ typedef uint128_t u128; typedef unsigned long long u64; -typedef int8_t s8; -typedef int16_t s16; -typedef int32_t s32; -typedef int64_t s64; +typedef int8_t s8; +typedef int16_t s16; +typedef int32_t s32; +typedef int64_t s64; +#ifdef WORD_SIZE_64 typedef __int128 int128_t; typedef int128_t s128; +#endif #ifndef MIN #define MIN(a, b) \ @@ -119,19 +124,21 @@ typedef int128_t s128; }) // It is impossible to define 128 bit constants, so ... -#define SWAPN(_x, _l) \ - ({ \ - \ - u128 _res = (_x), _ret; \ - char *d = (char *)&_ret, *s = (char *)&_res; \ - int i; \ - for (i = 0; i < 16; i++) \ - d[15 - i] = s[i]; \ - u32 sr = 128U - ((_l) << 3U); \ - (_ret >>= sr); \ - (u128) _ret; \ - \ - }) +#ifdef WORD_SIZE_64 + #define SWAPN(_x, _l) \ + ({ \ + \ + u128 _res = (_x), _ret; \ + char *d = (char *)&_ret, *s = (char *)&_res; \ + int i; \ + for (i = 0; i < 16; i++) \ + d[15 - i] = s[i]; \ + u32 sr = 128U - ((_l) << 3U); \ + (_ret >>= sr); \ + (u128) _ret; \ + \ + }) +#endif #define SWAPNN(_x, _y, _l) \ ({ \ diff --git a/instrumentation/afl-compiler-rt.o.c b/instrumentation/afl-compiler-rt.o.c index edb635ae..0ce96673 100644 --- a/instrumentation/afl-compiler-rt.o.c +++ b/instrumentation/afl-compiler-rt.o.c @@ -1218,15 +1218,22 @@ void __cmplog_ins_hook1(uint8_t arg1, uint8_t arg2, uint8_t attr) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; + + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; - // if (!__afl_cmp_map->headers[k].cnt) - // __afl_cmp_map->headers[k].cnt = __afl_cmp_counter++; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 0; - __afl_cmp_map->headers[k].shape = 0; + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = arg1; @@ -1242,13 +1249,28 @@ void __cmplog_ins_hook2(uint16_t arg1, uint16_t arg2, uint8_t attr) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - __afl_cmp_map->headers[k].shape = 1; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 1; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (!__afl_cmp_map->headers[k].shape) { + + __afl_cmp_map->headers[k].shape = 1; + + } + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = arg1; @@ -1266,13 +1288,28 @@ void __cmplog_ins_hook4(uint32_t arg1, uint32_t arg2, uint8_t attr) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; + + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { + + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 3; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].shape < 3) { - __afl_cmp_map->headers[k].shape = 3; + __afl_cmp_map->headers[k].shape = 3; + + } + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = arg1; @@ -1282,7 +1319,7 @@ void __cmplog_ins_hook4(uint32_t arg1, uint32_t arg2, uint8_t attr) { void __cmplog_ins_hook8(uint64_t arg1, uint64_t arg2, uint8_t attr) { - fprintf(stderr, "hook8 arg0=%lx arg1=%lx attr=%u\n", arg1, arg2, attr); + // fprintf(stderr, "hook8 arg0=%lx arg1=%lx attr=%u\n", arg1, arg2, attr); if (unlikely(!__afl_cmp_map || arg1 == arg2)) return; @@ -1290,13 +1327,28 @@ void __cmplog_ins_hook8(uint64_t arg1, uint64_t arg2, uint8_t attr) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - __afl_cmp_map->headers[k].shape = 7; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 7; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (__afl_cmp_map->headers[k].shape < 7) { + + __afl_cmp_map->headers[k].shape = 7; + + } + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = arg1; @@ -1304,6 +1356,7 @@ void __cmplog_ins_hook8(uint64_t arg1, uint64_t arg2, uint8_t attr) { } +#ifdef WORD_SIZE_64 // support for u24 to u120 via llvm _ExitInt(). size is in bytes minus 1 void __cmplog_ins_hookN(uint128_t arg1, uint128_t arg2, uint8_t attr, uint8_t size) { @@ -1318,13 +1371,28 @@ void __cmplog_ins_hookN(uint128_t arg1, uint128_t arg2, uint8_t attr, k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - __afl_cmp_map->headers[k].shape = size; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = size; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (__afl_cmp_map->headers[k].shape < size) { + + __afl_cmp_map->headers[k].shape = size; + + } + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = (u64)arg1; @@ -1347,13 +1415,28 @@ void __cmplog_ins_hook16(uint128_t arg1, uint128_t arg2, uint8_t attr) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; - __afl_cmp_map->headers[k].attribute = attr; + u32 hits; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - __afl_cmp_map->headers[k].shape = 15; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 15; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (__afl_cmp_map->headers[k].shape < 15) { + + __afl_cmp_map->headers[k].shape = 15; + + } + + } + + __afl_cmp_map->headers[k].attribute = attr; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = (u64)arg1; @@ -1363,6 +1446,8 @@ void __cmplog_ins_hook16(uint128_t arg1, uint128_t arg2, uint8_t attr) { } +#endif + #if defined(__APPLE__) #pragma weak __sanitizer_cov_trace_const_cmp1 = __cmplog_ins_hook1 #pragma weak __sanitizer_cov_trace_const_cmp2 = __cmplog_ins_hook2 @@ -1384,8 +1469,10 @@ void __sanitizer_cov_trace_const_cmp4(uint32_t arg1, uint32_t arg2) __attribute__((alias("__cmplog_ins_hook4"))); void __sanitizer_cov_trace_const_cmp8(uint64_t arg1, uint64_t arg2) __attribute__((alias("__cmplog_ins_hook8"))); + #ifdef WORD_SIZE_64 void __sanitizer_cov_trace_const_cmp16(uint128_t arg1, uint128_t arg2) __attribute__((alias("__cmplog_ins_hook16"))); + #endif void __sanitizer_cov_trace_cmp1(uint8_t arg1, uint8_t arg2) __attribute__((alias("__cmplog_ins_hook1"))); @@ -1395,8 +1482,10 @@ void __sanitizer_cov_trace_cmp4(uint32_t arg1, uint32_t arg2) __attribute__((alias("__cmplog_ins_hook4"))); void __sanitizer_cov_trace_cmp8(uint64_t arg1, uint64_t arg2) __attribute__((alias("__cmplog_ins_hook8"))); + #ifdef WORD_SIZE_64 void __sanitizer_cov_trace_cmp16(uint128_t arg1, uint128_t arg2) __attribute__((alias("__cmplog_ins_hook16"))); + #endif #endif /* defined(__APPLE__) */ void __sanitizer_cov_trace_switch(uint64_t val, uint64_t *cases) { @@ -1409,12 +1498,28 @@ void __sanitizer_cov_trace_switch(uint64_t val, uint64_t *cases) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + u32 hits; - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { - __afl_cmp_map->headers[k].shape = 7; + __afl_cmp_map->headers[k].type = CMP_TYPE_INS; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 7; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (__afl_cmp_map->headers[k].shape < 7) { + + __afl_cmp_map->headers[k].shape = 7; + + } + + } + + __afl_cmp_map->headers[k].attribute = 1; hits &= CMP_MAP_H - 1; __afl_cmp_map->log[k][hits].v0 = val; @@ -1448,12 +1553,26 @@ void __cmplog_rtn_hook(u8 *ptr1, u8 *ptr2) { k = (k >> 4) ^ (k << 8); k &= CMP_MAP_W - 1; - __afl_cmp_map->headers[k].type = CMP_TYPE_RTN; + u32 hits; + + if (__afl_cmp_map->headers[k].type != CMP_TYPE_INS) { + + __afl_cmp_map->headers[k].type = CMP_TYPE_RTN; + hits = 0; + __afl_cmp_map->headers[k].hits = 1; + __afl_cmp_map->headers[k].shape = 31; + + } else { + + hits = __afl_cmp_map->headers[k].hits++; + + if (__afl_cmp_map->headers[k].shape < 31) { - u32 hits = __afl_cmp_map->headers[k].hits; - __afl_cmp_map->headers[k].hits = hits + 1; + __afl_cmp_map->headers[k].shape = 31; - __afl_cmp_map->headers[k].shape = 31; + } + + } hits &= CMP_MAP_RTN_H - 1; __builtin_memcpy(((struct cmpfn_operands *)__afl_cmp_map->log[k])[hits].v0, diff --git a/instrumentation/cmplog-instructions-pass.cc b/instrumentation/cmplog-instructions-pass.cc index a74fb6c8..6ce1832f 100644 --- a/instrumentation/cmplog-instructions-pass.cc +++ b/instrumentation/cmplog-instructions-pass.cc @@ -420,6 +420,7 @@ bool CmpLogInstructions::hookInstrs(Module &M) { IRB.CreateCall(cmplogHookIns8, args); break; case 128: +#ifdef WORD_SIZE_64 if (max_size == 128) { IRB.CreateCall(cmplogHookIns16, args); @@ -430,6 +431,9 @@ bool CmpLogInstructions::hookInstrs(Module &M) { } +#endif + break; + default: break; } diff --git a/instrumentation/llvm-ngram-coverage.h b/instrumentation/llvm-ngram-coverage.h index 12b666e9..666839c8 100644 --- a/instrumentation/llvm-ngram-coverage.h +++ b/instrumentation/llvm-ngram-coverage.h @@ -1,7 +1,7 @@ #ifndef AFL_NGRAM_CONFIG_H #define AFL_NGRAM_CONFIG_H -#include "../config.h" +#include "types.h" #if (MAP_SIZE_POW2 <= 16) typedef u16 PREV_LOC_T; diff --git a/src/afl-fuzz-redqueen.c b/src/afl-fuzz-redqueen.c index fe98f031..56022fa6 100644 --- a/src/afl-fuzz-redqueen.c +++ b/src/afl-fuzz-redqueen.c @@ -33,7 +33,26 @@ #define CMPLOG_INTROSPECTION //#define ARITHMETIC_LESSER_GREATER -///// Colorization +// CMP attribute enum +enum { + + IS_EQUAL = 1, + IS_GREATER = 2, + IS_LESSER = 4, + IS_FP = 8, + IS_FP_MOD = 16, + IS_INT_MOD = 32 + +}; + +// CMPLOG LVL +enum { + + LVL1 = 1, + LVL2 = 2, + LVL3 = 4 + +}; struct range { @@ -545,8 +564,8 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, unsigned long long unum; long long num; - // reverse atoi()/strnu?toll() is expensive, so we only to it in lvl == 3 - if (lvl & 4) { + // reverse atoi()/strnu?toll() is expensive, so we only to it in lvl 3 + if (lvl & LVL3) { if (afl->queue_cur->is_ascii) { @@ -618,7 +637,8 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, // we only allow this for ascii2integer (above) if (unlikely(pattern == o_pattern)) { return 0; } - if ((lvl & 1) || ((lvl & 2) && (attr >= 8 && attr <= 15)) || attr >= 16) { + if ((lvl & LVL1) || ((lvl & LVL2) && (attr >= IS_FP && attr < IS_FP_MOD)) || + attr >= IS_FP_MOD) { if (SHAPE_BYTES(h->shape) >= 8 && *status != 1) { @@ -632,8 +652,8 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, // if this is an fcmp (attr & 8 == 8) then do not compare the patterns - // due to a bug in llvm dynamic float bitcasts do not work :( // the value 16 means this is a +- 1.0 test case - if (its_len >= 8 && - ((*buf_64 == pattern && *o_buf_64 == o_pattern) || attr >= 16)) { + if (its_len >= 8 && ((*buf_64 == pattern && *o_buf_64 == o_pattern) || + attr >= IS_FP_MOD)) { u64 tmp_64 = *buf_64; *buf_64 = repl; @@ -674,7 +694,7 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, if (its_len >= 4 && ((*buf_32 == (u32)pattern && *o_buf_32 == (u32)o_pattern) || - attr >= 16)) { + attr >= IS_FP_MOD)) { u32 tmp_32 = *buf_32; *buf_32 = (u32)repl; @@ -708,7 +728,7 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, if (its_len >= 2 && ((*buf_16 == (u16)pattern && *o_buf_16 == (u16)o_pattern) || - attr >= 16)) { + attr >= IS_FP_MOD)) { u16 tmp_16 = *buf_16; *buf_16 = (u16)repl; @@ -738,7 +758,7 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, if (*status != 1) { // u8 - // if (its_len >= 1 && (attr <= 1 || attr >= 8)) + // if (its_len >= 1) // fprintf(stderr, // "TestU8: %u>=1 (idx=%u attr=%u) %x==%x %x==%x <= %x<-%x\n", // its_len, idx, attr, *buf_8, (u8)pattern, *o_buf_8, @@ -746,7 +766,7 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, if (its_len >= 1 && ((*buf_8 == (u8)pattern && *o_buf_8 == (u8)o_pattern) || - attr >= 16)) { + attr >= IS_FP_MOD)) { u8 tmp_8 = *buf_8; *buf_8 = (u8)repl; @@ -769,10 +789,11 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, // in original buffer) #ifdef ARITHMETIC_LESSER_GREATER - if (lvl < 4) { return 0; } + if (lvl < LVL3) { return 0; } // lesser/greater FP comparison - if ((attr & 6) && (attr >= 8 && attr < 16)) { + if ((attr & (IS_LESSER + IS_GREATER)) && + (attr >= IS_FP && attr < IS_FP_MOD)) { u64 repl_new; if (SHAPE_BYTES(h->shape) == 4 && its_len >= 4) { @@ -869,7 +890,7 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, } - } else if ((attr & 6) && attr < 8) { + } else if ((attr & (IS_LESSER + IS_GREATER)) && attr < IS_FP) { // lesser/greater integer comparison @@ -903,6 +924,8 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h, } +#ifdef WORD_SIZE_64 + static u8 cmp_extend_encodingN(afl_state_t *afl, struct cmp_header *h, u128 pattern, u128 repl, u128 o_pattern, u128 changed_val, u8 attr, u32 idx, @@ -917,15 +940,15 @@ static u8 cmp_extend_encodingN(afl_state_t *afl, struct cmp_header *h, u8 backup[16]; u32 its_len = MIN(len - idx, taint_len); u32 shape = h->shape + 1; -#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) + #if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) size_t off = 0; -#else + #else size_t off = 16 - shape; -#endif + #endif if (its_len >= shape) { -#ifdef _DEBUG + #ifdef _DEBUG // fprintf(stderr, "TestUN: %u>=%u (len=%u idx=%u attr=%u off=%lu) (%u) ", // its_len, shape, len, idx, attr, off, do_reverse); u32 i; @@ -948,7 +971,7 @@ static u8 cmp_extend_encodingN(afl_state_t *afl, struct cmp_header *h, for (i = 0; i < shape; i++) fprintf(stderr, "%02x", o_r[off + i]); fprintf(stderr, "\n"); -#endif + #endif if (!memcmp(ptr, p + off, shape) && !memcmp(o_ptr, o_p + off, shape)) { @@ -957,15 +980,15 @@ static u8 cmp_extend_encodingN(afl_state_t *afl, struct cmp_header *h, if (unlikely(its_fuzz(afl, buf, len, status))) { return 1; } -#ifdef COMBINE + #ifdef COMBINE if (*status == 1) { memcpy(cbuf + idx, r, shape); } -#endif + #endif memcpy(ptr, backup, shape); -#ifdef _DEBUG + #ifdef _DEBUG fprintf(stderr, "Status=%u\n", *status); -#endif + #endif } @@ -990,6 +1013,8 @@ static u8 cmp_extend_encodingN(afl_state_t *afl, struct cmp_header *h, } +#endif + static void try_to_add_to_dict(afl_state_t *afl, u64 v, u8 shape) { u8 *b = (u8 *)&v; @@ -1040,21 +1065,22 @@ static void try_to_add_to_dict(afl_state_t *afl, u64 v, u8 shape) { } +#ifdef WORD_SIZE_64 static void try_to_add_to_dictN(afl_state_t *afl, u128 v, u8 size) { u8 *b = (u8 *)&v; u32 k; u8 cons_ff = 0, cons_0 = 0; -#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) + #if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) u32 off = 0; for (k = 0; k < size; ++k) { -#else - u32 off = 16 - size; + #else + u32 off = 16 - size; for (k = 16 - size; k < 16; ++k) { -#endif + #endif if (b[k] == 0) { ++cons_0; @@ -1077,6 +1103,8 @@ static void try_to_add_to_dictN(afl_state_t *afl, u128 v, u8 size) { } +#endif + static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, u32 len, u32 lvl, struct tainted *taint) { @@ -1091,11 +1119,13 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, u8 found_one = 0; /* loop cmps are useless, detect and ignore them */ +#ifdef WORD_SIZE_64 u128 s128_v0 = 0, s128_v1 = 0, orig_s128_v0 = 0, orig_s128_v1 = 0; - u64 s_v0, s_v1; - u8 s_v0_fixed = 1, s_v1_fixed = 1; - u8 s_v0_inc = 1, s_v1_inc = 1; - u8 s_v0_dec = 1, s_v1_dec = 1; +#endif + u64 s_v0, s_v1; + u8 s_v0_fixed = 1, s_v1_fixed = 1; + u8 s_v0_inc = 1, s_v1_inc = 1; + u8 s_v0_dec = 1, s_v1_dec = 1; switch (SHAPE_BYTES(h->shape)) { @@ -1110,7 +1140,7 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, } // FP handling only from lvl 2 onwards - if ((h->attribute & 8) && lvl < 2) return 0; + if ((h->attribute & IS_FP) && lvl < LVL2) return 0; for (i = 0; i < loggeds; ++i) { @@ -1162,6 +1192,7 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, } +#ifdef WORD_SIZE_64 if (unlikely(is_n)) { s128_v0 = ((u128)o->v0) + (((u128)o->v0_128) << 64); @@ -1171,6 +1202,8 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, } +#endif + for (idx = 0; idx < len; ++idx) { if (have_taint) { @@ -1195,6 +1228,7 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, status = 0; +#ifdef WORD_SIZE_64 if (is_n) { // _ExtInt special case including u128 if (s128_v0 != orig_s128_v0 && orig_s128_v0 != orig_s128_v1) { @@ -1239,11 +1273,13 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, } +#endif + // even for u128 and _ExtInt we do cmp_extend_encoding() because // if we got here their own special trials failed and it might just be // a cast from e.g. u64 to u128 from the input data. - if ((o->v0 != orig_o->v0 || lvl >= 4) && orig_o->v0 != orig_o->v1) { + if ((o->v0 != orig_o->v0 || lvl >= LVL3) && orig_o->v0 != orig_o->v1) { if (unlikely(cmp_extend_encoding( afl, h, o->v0, o->v1, orig_o->v0, orig_o->v1, h->attribute, idx, @@ -1263,7 +1299,7 @@ static u8 cmp_fuzz(afl_state_t *afl, u32 key, u8 *orig_buf, u8 *buf, u8 *cbuf, } status = 0; - if ((o->v1 != orig_o->v1 || lvl >= 4) && orig_o->v0 != orig_o->v1) { + if ((o->v1 != orig_o->v1 || lvl >= LVL3) && orig_o->v0 != orig_o->v1) { if (unlikely(cmp_extend_encoding( afl, h, o->v1, o->v0, orig_o->v1, orig_o->v0, h->attribute, idx, @@ -1521,13 +1557,6 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { } - // do it manually, forkserver clear only afl->fsrv.trace_bits - memset(afl->shm.cmp_map->headers, 0, sizeof(afl->shm.cmp_map->headers)); - - if (unlikely(common_fuzz_cmplog_stuff(afl, buf, len))) { return 1; } - - memcpy(afl->orig_cmp_map, afl->shm.cmp_map, sizeof(struct cmp_map)); - struct tainted *taint = NULL; if (!afl->queue_cur->taint || !afl->queue_cur->cmplog_colorinput) { @@ -1562,8 +1591,6 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { buf = afl->queue_cur->cmplog_colorinput; taint = afl->queue_cur->taint; - // reget the cmplog information - if (unlikely(common_fuzz_cmplog_stuff(afl, buf, len))) { return 1; } } @@ -1583,9 +1610,13 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { u32 cmp_locations = 0; #endif - // do it manually, forkserver clear only afl->fsrv.trace_bits - memset(afl->shm.cmp_map->headers, 0, sizeof(afl->shm.cmp_map->headers)); - + // Generate the cmplog data + // manually clear the full cmp_map + memset(afl->shm.cmp_map, 0, sizeof(struct cmp_map)); + if (unlikely(common_fuzz_cmplog_stuff(afl, orig_buf, len))) { return 1; } + memcpy(afl->orig_cmp_map, afl->shm.cmp_map, sizeof(struct cmp_map)); + // manually clear just the headers + memset(afl->shm.cmp_map->headers, 0, sizeof(struct cmp_header)); if (unlikely(common_fuzz_cmplog_stuff(afl, buf, len))) { return 1; } u64 orig_hit_cnt, new_hit_cnt; @@ -1602,7 +1633,7 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { u32 cmplog_lvl = afl->cmplog_lvl; if (!cmplog_done) { - lvl = 1; + lvl = LVL1; } else { @@ -1610,8 +1641,8 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { } - if (cmplog_lvl >= 2 && cmplog_done < 2) { lvl += 2; } - if (cmplog_lvl >= 3 && cmplog_done < 3) { lvl += 4; } + if (cmplog_lvl >= 2 && cmplog_done < 2) { lvl += LVL2; } + if (cmplog_lvl >= 3 && cmplog_done < 3) { lvl += LVL3; } #ifdef COMBINE u8 *cbuf = afl_realloc((void **)&afl->in_scratch_buf, len + 128); @@ -1668,7 +1699,7 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len) { } - } else if (lvl & 1) { + } else if (lvl & LVL1) { if (unlikely(rtn_fuzz(afl, k, orig_buf, buf, cbuf, len, taint))) { |