memory leak in rds_send

memory leak in rds_send_probe
Status: upstream: reported C repro on 2019/07/23 16:18
Reported-by: syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com
First crash: 310d, last: 12d

Cause bisection: introduced by (bisect log):

commit af49a63e101eb62376cc1d6bd25b97eb8c691d54
Author: Matthew Wilcox <willy@linux.intel.com>
Date: Sat May 21 00:03:33 2016 +0000

radix-tree: change naming conventions in radix_tree_shrink

Crash: memory leak in next_bio (log)
Repro: C syz .config

Sample crash report:

executing program
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff88811cd29200 (size 512):
  comm "syz-executor884", pid 6606, jiffies 4294945054 (age 13.470s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 08 92 d2 1c 81 88 ff ff  ................
    08 92 d2 1c 81 88 ff ff 18 92 d2 1c 81 88 ff ff  ................
  backtrace:
    [<0000000084457d43>] kmalloc include/linux/slab.h:560 [inline]
    [<0000000084457d43>] kzalloc include/linux/slab.h:669 [inline]
    [<0000000084457d43>] rds_message_alloc+0x37/0xc0 net/rds/message.c:291
    [<00000000c8477fb5>] rds_send_probe.constprop.0+0x42/0x380 net/rds/send.c:1433
    [<00000000b00ea0f6>] rds_recv_incoming+0x485/0x5d0 net/rds/recv.c:343
    [<000000000dcfa192>] rds_loop_xmit+0x7b/0xf0 net/rds/loop.c:96
    [<00000000049ad342>] rds_send_xmit+0x583/0xb00 net/rds/send.c:367
    [<00000000faf71395>] rds_sendmsg+0x1187/0x1430 net/rds/send.c:1381
    [<000000007c53a806>] sock_sendmsg_nosec net/socket.c:652 [inline]
    [<000000007c53a806>] sock_sendmsg+0x4c/0x60 net/socket.c:672
    [<00000000cffb6704>] __sys_sendto+0x11d/0x1c0 net/socket.c:2000
    [<000000004e7d1666>] __do_sys_sendto net/socket.c:2012 [inline]
    [<000000004e7d1666>] __se_sys_sendto net/socket.c:2008 [inline]
    [<000000004e7d1666>] __x64_sys_sendto+0x26/0x30 net/socket.c:2008
    [<000000008fb5f0cb>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295
    [<00000000900fc69e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Crashes (22):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-gce-leak	2020/05/17 00:44	upstream	3d1c1e59	37bccd4e	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/04/07 14:55	upstream	7e634208	99a96044	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/03/19 05:48	upstream	5076190d	0a96a13c	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/03/17 11:57	upstream	fb33c651	749688d2	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/03/14 11:24	upstream	fffb08b3	749688d2	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/03/12 16:49	upstream	e6e6ec48	d850e9d0	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/03/03 06:42	upstream	63623fd4	c88c7b75	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/02/26 17:06	upstream	f8788d86	59b57593	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/02/08 06:01	upstream	41dcd67e	06150bf1	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/01/31 11:16	upstream	9f68e365	5ed23f9a	.config	log	report	syz	C	davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/01/25 03:15	upstream	6381b442	2e95ab33	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/01/10 21:15	upstream	e69ec487	4de4e9f0	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2020/01/10 18:38	upstream	e69ec487	4de4e9f0	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/12/26 13:03	upstream	46cf053e	be5c2c81	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/10/31 17:51	upstream	e472c64a	a41ca8fa	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/10/11 11:43	upstream	9e208aa0	1a3bad90	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/10/04 07:32	upstream	cc3a7bfe	fc17ba49	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/10/04 06:54	upstream	cc3a7bfe	fc17ba49	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/09/03 20:25	upstream	089cf7f6	48448e71	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/08/28 01:16	upstream	6525771f	fd37b39e	.config	log	report	syz	C	davem@davemloft.net, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com
ci-upstream-gce-leak	2019/07/23 11:19	upstream	c6dd78fc	55e0c077	.config	log	report	syz	C
ci-upstream-gce-leak	2020/04/10 23:16	upstream	c0cc2711	a8c6a3f8	.config	log	report	syz		davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com