diff options
| author | Alan Wu <[email protected]> | 2024-11-11 13:27:28 -0500 |
|---|---|---|
| committer | Alan Wu <[email protected]> | 2024-11-11 16:35:57 -0500 |
| commit | 821a5b966fbc2926dc3bf88b6ba09879fa35318e () | |
| tree | 0c29a821afdec04a5bf2ab19f016e57247e62245 | |
| parent | 1d1c80e6443e21a7e10d9d4987b0deb1ef8ec374 (diff) | |
YJIT: Probe away from the heap when requesting exec memory
I was looking at some crash reports and noticed that many have a line like the following for YJIT code memory: <addr>-<addr> r-xp 00000000 00:00 0 [heap] I guess YJIT confused the kernel into thinking this region is from sbrk(). While this seems to have no consequences beyond mislabeling, it's still a little concerning. Probe downwards instead.
Notes: Merged: https://.com/ruby/ruby/pull/12058
| -rw-r--r-- | yjit.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -294,8 +294,11 @@ rb_yjit_reserve_addr_space(uint32_t mem_size) break; } - // +4MB - req_addr += 4 * 1024 * 1024; } while (req_addr < probe_region_end); // On MacOS and other platforms |