memory leak in tipc_group_create

memory leak in tipc_group_create_member
Status: fixed on 2020/10/10 01:52
Reported-by: syzbot+f95d90c454864b3b5bc9@syzkaller.appspotmail.com
Fix commit: bb3a420d47ab tipc: Fix memory leak in tipc_group_create_member()
First crash: 863d, last: 451d

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2020/09/11 15:08	15m	yepeilin.cs@gmail.com	patch	upstream	OK

Sample crash report:

executing program
executing program
BUG: memory leak
unreferenced object 0xffff8881193c8100 (size 128):
  comm "syz-executor700", pid 6476, jiffies 4294941677 (age 13.410s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 18 81 3c 19 81 88 ff ff  ..........<.....
  backtrace:
    [<00000000702f1ba3>] kmalloc include/linux/slab.h:554 [inline]
    [<00000000702f1ba3>] kzalloc include/linux/slab.h:666 [inline]
    [<00000000702f1ba3>] tipc_group_create_member+0x38/0x180 net/tipc/group.c:306
    [<0000000028fc9b98>] tipc_nametbl_build_group+0x90/0xe0 net/tipc/name_table.c:714
    [<00000000f3b75b67>] tipc_sk_join net/tipc/socket.c:3065 [inline]
    [<00000000f3b75b67>] tipc_setsockopt+0x262/0x5d0 net/tipc/socket.c:3171
    [<000000003469b055>] __sys_setsockopt+0x14b/0x270 net/socket.c:2132
    [<00000000151f710f>] __do_sys_setsockopt net/socket.c:2143 [inline]
    [<00000000151f710f>] __se_sys_setsockopt net/socket.c:2140 [inline]
    [<00000000151f710f>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
    [<000000005081c26e>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000005b8f78c5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811ae5ad00 (size 128):
  comm "syz-executor700", pid 6477, jiffies 4294942233 (age 7.850s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 18 ad e5 1a 81 88 ff ff  ................
  backtrace:
    [<00000000702f1ba3>] kmalloc include/linux/slab.h:554 [inline]
    [<00000000702f1ba3>] kzalloc include/linux/slab.h:666 [inline]
    [<00000000702f1ba3>] tipc_group_create_member+0x38/0x180 net/tipc/group.c:306
    [<0000000028fc9b98>] tipc_nametbl_build_group+0x90/0xe0 net/tipc/name_table.c:714
    [<00000000f3b75b67>] tipc_sk_join net/tipc/socket.c:3065 [inline]
    [<00000000f3b75b67>] tipc_setsockopt+0x262/0x5d0 net/tipc/socket.c:3171
    [<000000003469b055>] __sys_setsockopt+0x14b/0x270 net/socket.c:2132
    [<00000000151f710f>] __do_sys_setsockopt net/socket.c:2143 [inline]
    [<00000000151f710f>] __se_sys_setsockopt net/socket.c:2140 [inline]
    [<00000000151f710f>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
    [<000000005081c26e>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000005b8f78c5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Crashes (32):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci-upstream-gce-leak	2020/09/12 16:18	upstream	729e3d091984	ce441f06	.config	log	report	syz	C
ci-upstream-gce-leak	2020/09/12 00:12	upstream	e8878ab82545	79fb24e2	.config	log	report	syz	C
ci-upstream-gce-leak	2020/09/09 11:53	upstream	34d4ddd359db	0ea7a887	.config	log	report	syz	C
ci-upstream-gce-leak	2020/08/26 10:50	upstream	abb3438d69fb	344da168	.config	log	report	syz	C
ci-upstream-gce-leak	2020/08/25 14:27	upstream	6a9dc5fd6170	344da168	.config	log	report	syz	C
ci-upstream-gce-leak	2020/08/07 05:06	upstream	47ec5303d73e	1f122f88	.config	log	report	syz	C
ci-upstream-gce-leak	2020/07/28 13:55	upstream	92ed30191993	cb93dc6a	.config	log	report	syz	C
ci-upstream-gce-leak	2020/07/11 19:27	upstream	a581387e415b	18d18b59	.config	log	report	syz	C
ci-upstream-gce-leak	2020/07/02 23:49	upstream	cd77006e01b3	bed10395	.config	log	report	syz	C
ci-upstream-gce-leak	2020/06/04 14:20	upstream	cb8e59cc8720	b0d1c0d5	.config	log	report	syz	C
ci-upstream-gce-leak	2020/06/03 10:05	upstream	194098915ac7	f3ba1b5b	.config	log	report	syz	C
ci-upstream-gce-leak	2020/05/29 01:52	upstream	75caf310d16c	0d951763	.config	log	report	syz	C
ci-upstream-gce-leak	2020/05/22 06:14	upstream	d2f8825ab78e	5afa2ddd	.config	log	report	syz	C
ci-upstream-gce-leak	2020/05/19 10:03	upstream	642b151f45dd	684d3606	.config	log	report	syz	C
ci-upstream-gce-leak	2020/05/03 14:24	upstream	f66ed1ebbfde	5457883a	.config	log	report	syz	C
ci-upstream-gce-leak	2020/04/13 04:03	upstream	4f8a3cc1183c	36b0b050	.config	log	report	syz	C
ci-upstream-gce-leak	2020/04/10 23:03	upstream	c0cc271173b2	a8c6a3f8	.config	log	report	syz	C
ci-upstream-gce-leak	2020/03/25 20:23	upstream	e2cf67f6689a	41f049cc	.config	log	report	syz	C
ci-upstream-gce-leak	2020/03/08 05:00	upstream	c20037652700	2e9971bb	.config	log	report	syz	C
ci-upstream-gce-leak	2020/03/07 22:59	upstream	63849c8f4107	2e9971bb	.config	log	report	syz	C
ci-upstream-gce-leak	2020/02/24 09:53	upstream	d2eee25858f2	d801cb02	.config	log	report	syz	C
ci-upstream-gce-leak	2020/02/06 22:50	upstream	4c46bef2e96a	c91cbc9d	.config	log	report	syz	C
ci-upstream-gce-leak	2020/01/23 07:26	upstream	dbab40bdb42c	3334d684	.config	log	report	syz	C
ci-upstream-gce-leak	2020/01/09 16:03	upstream	b07f636fca1c	ddc3e859	.config	log	report	syz	C
ci-upstream-gce-leak	2019/11/23 06:40	upstream	a6b0373ffcd8	598ca6c8	.config	log	report	syz	C
ci-upstream-gce-leak	2019/10/21 07:00	upstream	4fe34d61a3a9	8c88c9c1	.config	log	report	syz	C
ci-upstream-gce-leak	2019/10/12 07:52	upstream	9892f9f6cf83	426631dd	.config	log	report	syz	C
ci-upstream-gce-leak	2019/10/10 08:44	upstream	8a8c600de5dc	c4b9981b	.config	log	report	syz	C
ci-upstream-gce-leak	2019/09/06 08:22	upstream	3b47fd5ca9ea	040fda58	.config	log	report	syz	C
ci-upstream-gce-leak	2019/07/29 01:08	upstream	a9815a4fa2fd	c85e1c5b	.config	log	report	syz	C
ci-upstream-gce-leak	2020/03/20 19:34	upstream	6c90b86a745a	2c31c529	.config	log	report	syz
ci-upstream-gce-leak	2019/11/13 06:40	upstream	eb094f06963b	048f2d49	.config	log	report	syz