diff options
| author | Aleksandr Nogikh <nogikh@google.com> | 2021-08-26 14:34:47 +0000 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2021-08-26 19:29:53 +0200 |
| commit | b318694d0fc0781d0bc1e3aebfb916aa36731024 (patch) | |
| tree | bbb634683d76354341bebb3c1c464b9d01c052d9 /executor/executor_linux.h | |
| parent | b599f2fcc734e2183016a340d4f6fc2891d8e41f (diff) | |
executor: fix remote coverage collection
Currently the data_offset field of cover_t is only initialized for
per-syscall coverage collection. As a result, remote coverage is read
from an invalid location, fails to pass sanity checks and is not
returned to syzkaller.
Fix the initialization of cover_t fields.
Diffstat (limited to 'executor/executor_linux.h')
| -rw-r--r-- | executor/executor_linux.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/executor/executor_linux.h b/executor/executor_linux.h index 3a0620fcd..ed3cbafb3 100644 --- a/executor/executor_linux.h +++ b/executor/executor_linux.h @@ -91,6 +91,8 @@ static void cover_open(cover_t* cov, bool extra) if (cov->data == MAP_FAILED) fail("cover mmap failed"); cov->data_end = cov->data + mmap_alloc_size; + cov->data_offset = is_kernel_64_bit ? sizeof(uint64_t) : sizeof(uint32_t); + cov->pc_offset = 0; } static void cover_protect(cover_t* cov) |