diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-08-27 04:04:46 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-08-27 04:04:46 +0200 |
| commit | d25ca13ed8acdf609329055ef9c36d0f3fae9503 (patch) | |
| tree | 2d935119e40f2eac523bf07149bc7ebd4a74a23e | |
| parent | 1e773c97e79d74983edd9b46694956f76b0c7fd5 (diff) | |
kernel: make user stack segment non-executable
| -rw-r--r-- | sys/src/9/port/sysproc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/9/port/sysproc.c b/sys/src/9/port/sysproc.c index 56dc793d6..259b2d891 100644 --- a/sys/src/9/port/sysproc.c +++ b/sys/src/9/port/sysproc.c @@ -429,7 +429,7 @@ sysexec(va_list list) if(tstk <= USTKSIZE) error(Enovmem); } while((s = isoverlap(tstk-USTKSIZE, USTKSIZE)) != nil); - up->seg[ESEG] = newseg(SG_STACK, tstk-USTKSIZE, USTKSIZE/BY2PG); + up->seg[ESEG] = newseg(SG_STACK | SG_NOEXEC, tstk-USTKSIZE, USTKSIZE/BY2PG); /* * Args: pass 2: assemble; the pages will be faulted in |