git@vger.kernel.org list mirror (unofficial, one of many)
 help / color / mirror / code / Atom feed
* [PATCH] maintenance: fix two memory leaks
@ 2021-05-09 22:16 Lénaïc Huard
  2021-05-10  6:34 ` Junio C Hamano
                   ` (2 more replies)
  0 siblings, 3 replies; 10+ messages in thread
From: Lénaïc Huard @ 2021-05-09 22:16 UTC (permalink / raw)
  To: git; +Cc: Junio C Hamano, Derrick Stolee, Eric Sunshine, Lénaïc Huard

Fixes two memory leaks when running `git maintenance start` or `git
maintenance stop` in `update_background_schedule`:

$ valgrind --leak-check=full ~/git/bin/git maintenance start
==76584== Memcheck, a memory error detector
==76584== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==76584== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info
==76584== Command: /home/lenaic/git/bin/git maintenance start
==76584==
==76584==
==76584== HEAP SUMMARY:
==76584==     in use at exit: 34,880 bytes in 252 blocks
==76584==   total heap usage: 820 allocs, 568 frees, 146,414 bytes allocated
==76584==
==76584== 65 bytes in 1 blocks are definitely lost in loss record 17 of 39
==76584==    at 0x483E6AF: malloc (vg_replace_malloc.c:306)
==76584==    by 0x3DC39C: xrealloc (wrapper.c:126)
==76584==    by 0x3992CC: strbuf_grow (strbuf.c:98)
==76584==    by 0x39A473: strbuf_vaddf (strbuf.c:392)
==76584==    by 0x39BC54: xstrvfmt (strbuf.c:979)
==76584==    by 0x39BD2C: xstrfmt (strbuf.c:989)
==76584==    by 0x18451B: update_background_schedule (gc.c:1977)
==76584==    by 0x1846F6: maintenance_start (gc.c:2011)
==76584==    by 0x1847B4: cmd_maintenance (gc.c:2030)
==76584==    by 0x127A2E: run_builtin (git.c:453)
==76584==    by 0x127E81: handle_builtin (git.c:704)
==76584==    by 0x128142: run_argv (git.c:771)
==76584==
==76584== 240 bytes in 1 blocks are definitely lost in loss record 29 of 39
==76584==    at 0x4840D7B: realloc (vg_replace_malloc.c:834)
==76584==    by 0x491CE5D: getdelim (in /usr/lib/libc-2.33.so)
==76584==    by 0x39ADD7: strbuf_getwholeline (strbuf.c:635)
==76584==    by 0x39AF31: strbuf_getdelim (strbuf.c:706)
==76584==    by 0x39B064: strbuf_getline_lf (strbuf.c:727)
==76584==    by 0x184273: crontab_update_schedule (gc.c:1919)
==76584==    by 0x184678: update_background_schedule (gc.c:1997)
==76584==    by 0x1846F6: maintenance_start (gc.c:2011)
==76584==    by 0x1847B4: cmd_maintenance (gc.c:2030)
==76584==    by 0x127A2E: run_builtin (git.c:453)
==76584==    by 0x127E81: handle_builtin (git.c:704)
==76584==    by 0x128142: run_argv (git.c:771)
==76584==
==76584== LEAK SUMMARY:
==76584==    definitely lost: 305 bytes in 2 blocks
==76584==    indirectly lost: 0 bytes in 0 blocks
==76584==      possibly lost: 0 bytes in 0 blocks
==76584==    still reachable: 34,575 bytes in 250 blocks
==76584==         suppressed: 0 bytes in 0 blocks
==76584== Reachable blocks (those to which a pointer was found) are not shown.
==76584== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==76584==
==76584== For lists of detected and suppressed errors, rerun with: -s
==76584== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)

Signed-off-by: Lénaïc Huard <lenaic@lhuard.fr>
---
 builtin/gc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/builtin/gc.c b/builtin/gc.c
index ef7226d7bc..2574068ae2 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -1947,6 +1947,7 @@ static int crontab_update_schedule(int run_maintenance, int fd, const char *cmd)
 		fprintf(cron_in, "\n%s\n", END_LINE);
 	}
 
+	strbuf_release(&line);
 	fflush(cron_in);
 	fclose(cron_in);
 	close(crontab_edit.in);
@@ -1999,6 +2000,7 @@ static int update_background_schedule(int enable)
 		die("unknown background scheduler: %s", scheduler);
 
 	rollback_lock_file(&lk);
+	free(lock_path);
 	free(testing);
 	return result;
 }
-- 
2.31.1


^ permalink raw reply	[flat|nested] 10+ messages in thread
* Re: Re: [PATCH] maintenance: fix two memory leaks
@ 2021-05-10 11:47 Оксана Алексеева
  0 siblings, 0 replies; 10+ messages in thread
From: Оксана Алексеева @ 2021-05-10 11:47 UTC (permalink / raw)
  To: lilinchao; +Cc: dstolee, git, gitster, lenaic, sunshine



Отправлено с iPhone

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2021-05-11 15:13 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-05-09 22:16 [PATCH] maintenance: fix two memory leaks Lénaïc Huard
2021-05-10  6:34 ` Junio C Hamano
2021-05-10  6:38 ` lilinchao
2021-05-10  7:11   ` Junio C Hamano
     [not found]   ` <0c04f7c2b15f11eb82baa4badb2c2b1178978@pobox.com>
2021-05-10  7:50     ` lilinchao
2021-05-10 19:59 ` [PATCH v2 0/1] " Lénaïc Huard
2021-05-10 19:59   ` [PATCH v2 1/1] " Lénaïc Huard
2021-05-11 15:13     ` Derrick Stolee
2021-05-11  3:29   ` [PATCH v2 0/1] " Junio C Hamano
2021-05-10 11:47 Re: [PATCH] " Оксана Алексеева

Code repositories for project(s) associated with this inbox:

	https://80x24.org/mirrors/git.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).