WARNING in ib_umad_kill

WARNING in ib_umad_kill_port
Status: auto-closed as invalid on 2021/04/15 02:29
Reported-by: syzbot+9627a92b1f9262d5d30c@syzkaller.appspotmail.com
First crash: 386d, last: 128d

Sample crash report:

smc: removing ib device sy
------------[ cut here ]------------
sysfs group 'power' not found for kobject 'issm0'
WARNING: CPU: 1 PID: 9912 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 9912 Comm: kworker/u4:6 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound ib_unregister_work
RIP: 0010:sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 e0 ad 5b 89 e8 03 b5 c9 06 <0f> 0b eb 98 e8 01 f3 c9 ff e9 01 ff ff ff 48 89 df e8 f4 f2 c9 ff
RSP: 0018:ffffc90016e97a40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff89b5b860 RCX: 0000000000000000
RDX: ffff888029e1b580 RSI: ffffffff81594d05 RDI: fffff52002dd2f3a
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880b9f308a7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801c26e5d0
R13: ffffffff89b5be00 R14: ffff88805c494000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0009c9000 CR3: 00000000121b0000 CR4: 0000000000350ee0
Call Trace:
 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:837
 device_del+0x20c/0xec0 drivers/base/core.c:3092
 cdev_device_del+0x19/0x100 fs/char_dev.c:573
 ib_umad_kill_port+0x33/0x2b0 drivers/infiniband/core/user_mad.c:1326
 ib_umad_remove_one+0x179/0x280 drivers/infiniband/core/user_mad.c:1411
 remove_client_context+0xbe/0x110 drivers/infiniband/core/device.c:735
 disable_device+0x13b/0x270 drivers/infiniband/core/device.c:1249
 __ib_unregister_device+0x91/0x1a0 drivers/infiniband/core/device.c:1429
 ib_unregister_work+0x15/0x30 drivers/infiniband/core/device.c:1540
 process_one_work+0x933/0x15a0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Crashes (120):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info
ci-upstream-kasan-gce-root	2020/12/16 02:29	upstream	d635a69d	97183ed7	.config	log	report	info
ci-upstream-kasan-gce-root	2020/11/03 20:00	upstream	b7cbaf59	cba33199	.config	log	report	info
ci-upstream-kasan-gce-smack-root	2020/10/03 23:45	upstream	22fbc037	1a3f9408	.config	log	report	info
ci-upstream-kasan-gce-smack-root	2020/08/31 01:14	upstream	dcc5c6f0	d5a3ae1f	.config	log	report
ci-upstream-kasan-gce-smack-root	2020/08/18 02:10	upstream	2cc3c4b3	424dd8e7	.config	log	report
ci-upstream-kasan-gce-smack-root	2020/08/16 04:47	upstream	4b6c093e	424dd8e7	.config	log	report
ci-upstream-kasan-gce-selinux-root	2020/06/08 08:49	upstream	7ae77150	7751efd0	.config	log	report
ci-upstream-net-this-kasan-gce	2020/09/06 05:16	net	cc8e58f8	abf9ba4f	.config	log	report
ci-upstream-net-this-kasan-gce	2020/04/01 19:39	net	304e0242	a34e2c33	.config	log	report
ci-upstream-net-kasan-gce	2020/10/15 08:49	net-next	d25e2e93	63869021	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/12 23:33	net-next	15f5e48f	d32b0bbf	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/12 06:00	net-next	bc081a69	4a77ae0b	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/12 03:28	net-next	bc081a69	4a77ae0b	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/08 14:34	net-next	9faebeb2	92390980	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/04 04:29	net-next	186e26eb	1a3f9408	.config	log	report	info
ci-upstream-net-kasan-gce	2020/10/01 14:58	net-next	f2e83469	a9767fb2	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/26 17:22	net-next	6fba737a	2d5ea0cb	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/26 12:24	net-next	6fba737a	4a006f63	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/26 01:28	net-next	aafe8853	4a006f63	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/24 13:57	net-next	1a26e88d	54289b08	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/21 16:33	net-next	3cec0369	9e1fa68e	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/19 01:53	net-next	1d39cd8c	53ce8104	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/18 20:16	net-next	1d39cd8c	53ce8104	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/17 12:43	net-next	b948577b	8247808b	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/13 00:24	net-next	5a6bd84f	ce441f06	.config	log	report
ci-upstream-net-kasan-gce	2020/09/11 17:03	net-next	9984c0bb	adfb8b4e	.config	log	report
ci-upstream-net-kasan-gce	2020/09/11 16:42	net-next	9984c0bb	adfb8b4e	.config	log	report
ci-upstream-net-kasan-gce	2020/09/09 18:07	net-next	f5499c67	0ea7a887	.config	log	report
ci-upstream-net-kasan-gce	2020/09/07 21:00	net-next	bb1416ad	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/07 16:55	net-next	02a20d4f	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/06 19:41	net-next	be239c4d	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/06 11:13	net-next	447a851b	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/05 06:34	net-next	44a8c4f3	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/04 23:57	net-next	3ab1270b	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/01 02:58	net-next	c30a3c95	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/31 17:05	net-next	0f091e43	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/31 05:51	net-next	0f091e43	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/31 02:31	net-next	0f091e43	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/29 23:10	net-next	0f091e43	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/29 16:07	net-next	0f091e43	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/27 17:57	net-next	f0966581	816e0689	.config	log	report
ci-upstream-net-kasan-gce	2020/08/25 08:47	net-next	85eb5bc3	344da168	.config	log	report
ci-upstream-net-kasan-gce	2020/08/21 21:18	net-next	d0a84e1f	6436ce4b	.config	log	report
ci-upstream-net-kasan-gce	2020/08/20 21:39	net-next	1e76a2ff	1d75fe45	.config	log	report
ci-upstream-net-kasan-gce	2020/08/17 20:08	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/17 12:05	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/17 04:15	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/16 21:32	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/15 17:15	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/15 04:56	net-next	7fca4dee	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/13 14:17	net-next	bfdd5aaa	bc15f7db	.config	log	report
ci-upstream-net-kasan-gce	2020/08/13 11:29	net-next	bfdd5aaa	bc15f7db	.config	log	report
ci-upstream-net-kasan-gce	2020/08/11 19:40	net-next	bfdd5aaa	bacaf5fa	.config	log	report
ci-upstream-net-kasan-gce	2020/08/11 07:43	net-next	bfdd5aaa	7adc7b65	.config	log	report
ci-upstream-linux-next-kasan-gce-root	2020/09/03 22:22	linux-next	7a695657	abf9ba4f	.config	log	report