debian/patches/bts498183-segfault-madvise

   1 diff a/src/rrd_open.c b/src/rrd_open.c
   2 --- a/src/rrd_open.c
   3 +++ b/src/rrd_open.c
   4 @@ -363,6 +363,8 @@ void rrd_dontneed(
   5              rrd->rra_def[i].row_cnt * rrd->stat_head->ds_cnt *
   6              sizeof(rrd_value_t);
   7      }
   8 +
   9 +    if (dontneed_start < rrd_file->file_len) {
  10  #ifdef USE_MADVISE
  11      madvise(rrd_file->file_start + dontneed_start,
  12              rrd_file->file_len - dontneed_start, MADV_DONTNEED);
  13 @@ -371,6 +373,8 @@ void rrd_dontneed(
  14      posix_fadvise(rrd_file->fd, dontneed_start,
  15                    rrd_file->file_len - dontneed_start, POSIX_FADV_DONTNEED);
  16  #endif
  17 +    }
  18 +
  19  #if defined DEBUG && DEBUG > 1
  20      mincore_print(rrd_file, "after");
  21  #endif