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| author | Robert Swiecki <robert@swiecki.net> | 2017-03-06 23:21:55 +0100 |
|---|---|---|
| committer | Robert Swiecki <robert@swiecki.net> | 2017-03-06 23:21:55 +0100 |
| commit | 26753f0b0b17edd26142bbf950ff3030574d4aa6 (patch) | |
| tree | b3bbbc6a19e638623fab62d50e65510c9e52c134 /linux/perf.c | |
| parent | 1163b9bc2319588d7d675d3f471d83580a012543 (diff) | |
| download | honggfuzz-26753f0b0b17edd26142bbf950ff3030574d4aa6.tar.gz | |
linux: map aux buffer as prot_read
Diffstat (limited to 'linux/perf.c')
| -rw-r--r-- | linux/perf.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/linux/perf.c b/linux/perf.c index ef13dbe9..0eb39227 100644 --- a/linux/perf.c +++ b/linux/perf.c @@ -215,7 +215,7 @@ static bool arch_perfCreate(honggfuzz_t * hfuzz, fuzzer_t * fuzzer UNUSED, pid_t pem->aux_offset = pem->data_offset + pem->data_size; pem->aux_size = _HF_PERF_AUX_SZ; fuzzer->linux.perfMmapAux = - mmap(NULL, pem->aux_size, PROT_READ | PROT_WRITE, MAP_SHARED, *perfFd, pem->aux_offset); + mmap(NULL, pem->aux_size, PROT_READ, MAP_SHARED, *perfFd, pem->aux_offset); if (fuzzer->linux.perfMmapAux == MAP_FAILED) { munmap(fuzzer->linux.perfMmapBuf, _HF_PERF_MAP_SZ + getpagesize()); @@ -392,14 +392,10 @@ void arch_perfAnalyze(honggfuzz_t * hfuzz, fuzzer_t * fuzzer) if (fuzzer->linux.perfMmapBuf != NULL) { struct perf_event_mmap_page *pem = (struct perf_event_mmap_page *)fuzzer->linux.perfMmapBuf; - ATOMIC_SET(pem->aux_head, 0); - ATOMIC_SET(pem->aux_tail, 0); - ATOMIC_SET(pem->aux_offset, 0); - ATOMIC_SET(pem->aux_size, 0); ATOMIC_SET(pem->data_head, 0); ATOMIC_SET(pem->data_tail, 0); - ATOMIC_SET(pem->data_offset, 0); - ATOMIC_SET(pem->data_size, 0); + ATOMIC_SET(pem->aux_head, 0); + ATOMIC_SET(pem->aux_tail, 0); } fuzzer->linux.hwCnts.cpuInstrCnt = instrCount; |