syzbot

 sign-in | mailing list | source | docs
🐞 Open [1229]
≡ Subsystems
🐞 Fixed [5639]
🐞 Invalid [13735]
⬇ Missing Backports [100]
Kernel Health Bugs/Month Bug Lifetimes Fuzzing Crashes
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

kernel BUG at drivers/usb/wusbcore/wusbhc.c:LINE!

Status: fixed on 2019/08/14 02:14
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+fd2bd7df88c606eea4ef@syzkaller.appspotmail.com
Fix commit: f90bf1ece48a usb: wusbcore: fix unbalanced get/put cluster_id
First crash: 1886d, last: 1886d
▶ ▼ Discussions (9)
Title Replies (including bot) Last reply
[PATCH 3.16 00/83] 3.16.78-rc1 review 88 (88) 2019/11/21 21:42
[PATCH 4.9 000/223] 4.9.187-stable review 231 (231) 2019/08/28 03:02
[PATCH 4.19 000/113] 4.19.63-stable review 130 (130) 2019/08/15 07:07
[PATCH 4.4 000/158] 4.4.187-stable review 166 (166) 2019/08/03 15:57
[PATCH 5.2 000/215] 5.2.5-stable review 232 (232) 2019/07/31 09:50
[PATCH 4.14 000/293] 4.14.135-stable review 302 (302) 2019/07/31 09:35
[PATCH] usb: wusbcore: fix unbalanced get/put cluster_id 1 (1) 2019/07/24 02:06
Reminder: 67 open syzbot bugs in usb subsystem 1 (1) 2019/07/24 01:35
kernel BUG at drivers/usb/wusbcore/wusbhc.c:LINE! 0 (1) 2019/07/23 12:48
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2019/07/24 01:19 18m tranmanphong@gmail.com patch https://github.com/google/kasan.git usb-fuzzer-usb-testing-2019.07.11 OK
2019/07/23 18:02 21m tranmanphong@gmail.com patch https://github.com/google/kasan.git usb-fuzzer error

Sample crash report:
usb 1-1: BUG? WUSB host has no security descriptors
hwa-hc 1-1:0.66: Wireless USB HWA host controller
hwa-hc 1-1:0.66: new USB bus registered, assigned bus number 11
hwa-hc 1-1:0.66: Cannot set WUSB Cluster ID to 0xfe: -71
hwa-hc 1-1:0.66: Wireless USB Cluster ID set to 0xfe
------------[ cut here ]------------
kernel BUG at drivers/usb/wusbcore/wusbhc.c:385!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.2.0-rc6+ #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:wusb_cluster_id_put+0x6b/0x80 /drivers/usb/wusbcore/wusbhc.c:385
Code: 7b 9d ce fd 40 84 ed 74 23 e8 41 9c ce fd f0 48 0f b3 1d e8 d6 0e 06 5b 48 c7 c7 60 1b 06 87 5d e9 8a 3c e9 01 e8 25 9c ce fd <0f> 0b e8 1e 9c ce fd 0f 0b eb d4 66 2e 0f 1f 84 00 00 00 00 00 41
RSP: 0018:ffff8881d9eff0e8 EFLAGS: 00010293
RAX: ffff8881d9e36000 RBX: 00000000ffffffff RCX: ffffffff836e3f37
RDX: 0000000000000000 RSI: ffffffff836e3f8b RDI: 0000000000000001
RBP: 00000000000000fe R08: ffff8881d9e36000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffb9
R13: ffff8881d4a52600 R14: ffff8881d0b5d530 R15: 00000000000000fe
FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcea69e000 CR3: 00000001d4f3a000 CR4: 00000000001406e0
Call Trace:
 hwahc_op_start.cold+0x159/0x183 /drivers/usb/host/hwa-hc.c:162
 usb_add_hcd.cold+0xaac/0x15a1 /drivers/usb/core/hcd.c:2887
 hwahc_probe.cold+0xef/0x48b /drivers/usb/host/hwa-hc.c:810
 usb_probe_interface+0x305/0x7a0 /drivers/usb/core/driver.c:361
 really_probe+0x281/0x660 /drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454
 __device_attach+0x217/0x360 /drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514
 device_add+0xae6/0x16f0 /drivers/base/core.c:2111
 usb_set_configuration+0xdf6/0x1670 /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+0x281/0x660 /drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454
 __device_attach+0x217/0x360 /drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514
 device_add+0xae6/0x16f0 /drivers/base/core.c:2111
 usb_new_device.cold+0x6a4/0xe61 /drivers/usb/core/hub.c:2536
 hub_port_connect /drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change /drivers/usb/core/hub.c:5213 [inline]
 port_event /drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1abd/0x3550 /drivers/usb/core/hub.c:5441
 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415
 kthread+0x30b/0x410 /kernel/kthread.c:255
 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 328f1b9a8fbb35b6 ]---
RIP: 0010:wusb_cluster_id_put+0x6b/0x80 /drivers/usb/wusbcore/wusbhc.c:385
Code: 7b 9d ce fd 40 84 ed 74 23 e8 41 9c ce fd f0 48 0f b3 1d e8 d6 0e 06 5b 48 c7 c7 60 1b 06 87 5d e9 8a 3c e9 01 e8 25 9c ce fd <0f> 0b e8 1e 9c ce fd 0f 0b eb d4 66 2e 0f 1f 84 00 00 00 00 00 41
RSP: 0018:ffff8881d9eff0e8 EFLAGS: 00010293
RAX: ffff8881d9e36000 RBX: 00000000ffffffff RCX: ffffffff836e3f37
RDX: 0000000000000000 RSI: ffffffff836e3f8b RDI: 0000000000000001
RBP: 00000000000000fe R08: ffff8881d9e36000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffb9
R13: ffff8881d4a52600 R14: ffff8881d0b5d530 R15: 00000000000000fe
FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcea69e000 CR3: 00000001d4f3a000 CR4: 00000000001406e0

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/07/23 10:53 https://github.com/google/kasan.git usb-fuzzer 6a3599ceaa39 bb071d58 .config console log report syz C ci2-upstream-usb
* Struck through repros no longer work on HEAD.