WARNING in hso

WARNING in hso_probe
Status: upstream: reported C repro on 2019/09/27 17:19
Reported-by: syzbot+f00009d1881ba5ac45f8@syzkaller.appspotmail.com
First crash: 143d, last: 75d

duplicates (1):
Title	Repro	Bisected	Count	Last	Reported	Patched	Status
KASAN: use-after-free Read in hso_probe			26	4d16h	139d	0/16	closed as dup on 2019/11/19 14:43

Sample crash report:

sysfs group 'power' not found for kobject 'ttyHS0'
WARNING: CPU: 1 PID: 17 at fs/sysfs/group.c:278 sysfs_remove_group fs/sysfs/group.c:278 [inline]
WARNING: CPU: 1 PID: 17 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 panic+0x2aa/0x6e1 kernel/panic.c:221
 __warn.cold+0x2f/0x30 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:sysfs_remove_group fs/sysfs/group.c:278 [inline]
RIP: 0010:sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269
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 41 48 8b 33 48 c7 c7 e0 ba d0 85 e8 73 1f 87 ff <0f> 0b eb 95 e8 22 d4 d9 ff e9 d2 fe ff ff 48 89 df e8 15 d4 d9 ff
RSP: 0018:ffff8881da6670f8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffffff85f34ac0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8128ebcd RDI: ffffed103b4cce11
RBP: 0000000000000000 R08: ffff8881da64b100 R09: fffffbfff11aeca6
R10: fffffbfff11aeca5 R11: ffffffff88d7652f R12: ffff8881cf8e3000
R13: ffffffff85f35060 R14: ffff8881cf8e4000 R15: ffff8881cf8e1070
 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:741
 device_del+0x18b/0xd30 drivers/base/core.c:2641
 device_unregister drivers/base/core.c:2696 [inline]
 device_destroy+0x96/0xe0 drivers/base/core.c:3275
 tty_unregister_device+0x7e/0x1a0 drivers/tty/tty_io.c:3190
 hso_serial_tty_unregister drivers/net/usb/hso.c:2232 [inline]
 hso_create_bulk_serial_device drivers/net/usb/hso.c:2678 [inline]
 hso_probe.cold+0x6e/0x14c drivers/net/usb/hso.c:2944
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0x1480/0x1c20 drivers/base/core.c:2487
 usb_set_configuration+0xe67/0x1740 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0x1480/0x1c20 drivers/base/core.c:2487
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537
 hub_port_connect drivers/usb/core/hub.c:5184 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5324 [inline]
 port_event drivers/usb/core/hub.c:5470 [inline]
 hub_event+0x1e59/0x3860 drivers/usb/core/hub.c:5552
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (7):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci2-upstream-usb	2019/12/03 19:37	https://github.com/google/kasan.git usb-fuzzer	1f22d15c	0ecb9746	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/11/16 14:11	https://github.com/google/kasan.git usb-fuzzer	46178223	cdac920b	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/11/15 07:04	https://github.com/google/kasan.git usb-fuzzer	3183c037	79248ee8	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/10/13 05:28	https://github.com/google/kasan.git usb-fuzzer	58d5f26a	426631dd	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/10/08 21:05	https://github.com/google/kasan.git usb-fuzzer	58d5f26a	b1ebbfef	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/09/26 22:21	https://github.com/google/kasan.git usb-fuzzer	2994c077	2f1548bc	.config	log	report	syz	C	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org
ci2-upstream-usb	2019/11/05 01:16	https://github.com/google/kasan.git usb-fuzzer	16bfd2ae	76630fc9	.config	log	report			gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org