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: 455d, last: 47d

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
BUG: memory leak
unreferenced object 0xffff888118d67400 (size 512):
  comm "kworker/u4:4", pid 1025, jiffies 4294943540 (age 13.100s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 08 74 d6 18 81 88 ff ff  .........t......
    08 74 d6 18 81 88 ff ff 18 74 d6 18 81 88 ff ff  .t.......t......
  backtrace:
    [<00000000be0b1a35>] kmalloc include/linux/slab.h:559 [inline]
    [<00000000be0b1a35>] kzalloc include/linux/slab.h:666 [inline]
    [<00000000be0b1a35>] rds_message_alloc+0x34/0xc0 net/rds/message.c:291
    [<00000000218d4a2e>] rds_send_probe.constprop.0+0x42/0x370 net/rds/send.c:1434
    [<000000008591c0af>] rds_recv_incoming+0x487/0x5c0 net/rds/recv.c:343
    [<000000001ba8e34f>] rds_loop_xmit+0x7b/0xf0 net/rds/loop.c:96
    [<0000000075481b68>] rds_send_xmit+0x594/0xb90 net/rds/send.c:367
    [<000000000334f859>] rds_send_worker+0x36/0x150 net/rds/threads.c:200
    [<0000000010085b4b>] process_one_work+0x213/0x4d0 kernel/workqueue.c:2269
    [<00000000b5591fdc>] worker_thread+0x58/0x4b0 kernel/workqueue.c:2415
    [<00000000ac31f234>] kthread+0x164/0x190 kernel/kthread.c:292
    [<000000009480c3c0>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

BUG: memory leak
unreferenced object 0xffff88811d045a00 (size 512):
  comm "syz-executor710", pid 6505, jiffies 4294944086 (age 7.640s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 08 5a 04 1d 81 88 ff ff  .........Z......
    08 5a 04 1d 81 88 ff ff 18 5a 04 1d 81 88 ff ff  .Z.......Z......
  backtrace:
    [<00000000be0b1a35>] kmalloc include/linux/slab.h:559 [inline]
    [<00000000be0b1a35>] kzalloc include/linux/slab.h:666 [inline]
    [<00000000be0b1a35>] rds_message_alloc+0x34/0xc0 net/rds/message.c:291
    [<00000000218d4a2e>] rds_send_probe.constprop.0+0x42/0x370 net/rds/send.c:1434
    [<000000008591c0af>] rds_recv_incoming+0x487/0x5c0 net/rds/recv.c:343
    [<000000001ba8e34f>] rds_loop_xmit+0x7b/0xf0 net/rds/loop.c:96
    [<0000000075481b68>] rds_send_xmit+0x594/0xb90 net/rds/send.c:367
    [<0000000092f8efc0>] rds_sendmsg+0x129e/0x1440 net/rds/send.c:1382
    [<00000000d81a0e7a>] sock_sendmsg_nosec net/socket.c:651 [inline]
    [<00000000d81a0e7a>] sock_sendmsg+0x4c/0x60 net/socket.c:671
    [<000000002ddefa1f>] __sys_sendto+0x11d/0x1c0 net/socket.c:1992
    [<00000000e7fb4961>] __do_sys_sendto net/socket.c:2004 [inline]
    [<00000000e7fb4961>] __se_sys_sendto net/socket.c:2000 [inline]
    [<00000000e7fb4961>] __x64_sys_sendto+0x26/0x30 net/socket.c:2000
    [<00000000c99b5c84>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<00000000980075a0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Crashes (24):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-gce-leak	2020/09/04 00:36	upstream	e28f0104	abf9ba4f	.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	2020/07/04 10:30	upstream	7cc2a8ea	51095195	.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	2020/05/17 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