syzbot


ID Workflow Result Correct Bug Created Started Finished Revision Error
93e37b80-d120-4c81-b06a-172c93ddde62 patching 🏃 WARNING in smsusb_start_streaming/usb_submit_urb 2026/02/04 11:39 2026/02/04 11:43 a8a5086b62a3e3675c060a37e770833456f40888

Crash report:
usb 1-1: Manufacturer: syz
usb 1-1: config 0 descriptor??
smsusb:smsusb_probe: board id=9, interface number 0
smsusb:siano_media_device_register: media controller created
------------[ cut here ]------------
usb 1-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 0 PID: 922 at drivers/usb/core/urb.c:504 usb_submit_urb+0xc82/0x1890 drivers/usb/core/urb.c:503
Modules linked in:
CPU: 0 UID: 0 PID: 922 Comm: kworker/0:2 Not tainted 6.16.0-rc6-syzkaller-00279-gbf61759db409 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0xc82/0x1890 drivers/usb/core/urb.c:503
Code: 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 6d 08 00 00 45 8b 04 24 48 c7 c7 c0 31 34 8c 4c 89 f6 4c 89 fa e8 3f 42 64 fa 90 <0f> 0b 90 90 44 0f b6 64 24 48 4c 89 e7 48 c7 c6 b0 18 de 8e e8 05
RSP: 0018:ffffc90003a96ad0 EFLAGS: 00010246
RAX: 185a2cb325878d00 RBX: ffff888020297d00 RCX: ffff88802566bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfaa6c R12: ffffffff8c342fac
R13: dffffc0000000000 R14: ffffffff8c349aa0 R15: ffff8880206e72a0
FS:  0000000000000000(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056273673bcf8 CR3: 0000000077fe4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 smsusb_start_streaming+0x22/0x340 drivers/media/usb/siano/smsusb.c:197
 smsusb_init_device drivers/media/usb/siano/smsusb.c:477 [inline]
 smsusb_probe+0x18f6/0x2060 drivers/media/usb/siano/smsusb.c:575
 usb_probe_interface+0x641/0xbc0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9a0 drivers/base/dd.c:657
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1029
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3692
 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9a0 drivers/base/dd.c:657
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1029
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3692
 usb_new_device+0xa39/0x16c0 drivers/usb/core/hub.c:2694
 hub_port_connect drivers/usb/core/hub.c:5566 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5866 [inline]
 hub_event+0x2941/0x4a00 drivers/usb/core/hub.c:5948
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Trajectory:
Seq Timestamp Type Name Duration
0/0 2026/02/04 11:43 flow patching
1/1 2026/02/04 11:43 action base-commit-picker
0m Results:
map[KernelBranch:master KernelCommit:18f7fcd5e69a04df57b563360b88be72471d6b62 KernelRepo:git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git]

2/1 2026/02/04 11:43 action kernel-checkouter
0m Results:
map[KernelSrc:/usr/local/google/home/dvyukov/syzkaller/agent/workdir/cache/src/442656ac8be766ac08d507e9d55d7e172d7ca2ec]

3/1 2026/02/04 11:43 action kernel-builder
LLM Calls Summary:
Total Calls Total Tokens Avg Tokens Total Duration (Seconds) Avg Duration (Seconds)
Tool Calls Summary:
Total Calls Total Duration (Seconds) Avg Duration (Seconds)