romenskiy2012/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-07-05 13:27:19 +03:00
Code Issues Projects Releases Packages Wiki Activity

Fix "prof.reset" mallctl-related corruption.

Browse source 
Fix heap profiling to distinguish among otherwise identical sample sites
with interposed resets (triggered via the "prof.reset" mallctl).  This
bug could cause data structure corruption that would most likely result
in a segfault.
This commit is contained in:
Jason Evans 2015-09-09 23:16:10 -07:00
parent a306a60651
commit a00b10735a
4 changed files with 84 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/jemalloc/internal/prof.h
View file

@ -90,10 +90,11 @@ struct prof_tctx_s {
prof_tdata_t *tdata;
/*
* Copy of tdata->thr_uid, necessary because tdata may be defunct during
* teardown.
* Copy of tdata->thr_{uid,discrim}, necessary because tdata may be
* defunct during teardown.
*/
uint64_t thr_uid;
uint64_t thr_discrim;
/* Profiling counters, protected by tdata->lock. */
prof_cnt_t cnts;