| commit | 064bf225823454be0c9f72ddfca7f7c6cc209cd5 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 30 Apr 2020 08:39:05 +0000 (30 01:39 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 30 Apr 2020 08:39:05 +0000 (30 01:39 -0700) | ||
| tree | 070ef397061100f21c1fc798fa79dc44466fe22d | treesnapshot (tar.gz zip) |
| parent | 965c458c932cc375c59ca2e7eae94f724dd90182 | commitdiff |
libc - Fix a serious memory leak in the nmalloc code
* Fix a bug where mtmagazine_free() would assign mt->newmag without
re-checking its contents, potentially overwriting an assignment
made by _slaballoc(), causing a memory leak.
* This bug generally rears its ugly head in heavily pthreaded programs,
but it can occur under other conditions too.
Reported-by: hsw (irc)
* Fix a bug where mtmagazine_free() would assign mt->newmag without
re-checking its contents, potentially overwriting an assignment
made by _slaballoc(), causing a memory leak.
* This bug generally rears its ugly head in heavily pthreaded programs,
but it can occur under other conditions too.
Reported-by: hsw (irc)
| lib/libc/stdlib/nmalloc.c | diffblobblamehistory |