syzbot


WARNING in smsusb_term_device

Status: upstream: reported C repro on 2025/06/30 17:38
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+420b1c24d8512ae0410c@syzkaller.appspotmail.com
First crash: 15d, last: 5d09h
Bug presence (1)
Date Name Commit Repro Result
2025/07/06 upstream (ToT) 1f988d0788f5 C [report] WARNING in usb_free_urb
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in smsusb_term_device -1 C done 131 728d 849d 3/3 fixed on 2023/09/27 12:10
upstream WARNING in smsusb_term_device usb media -1 C done 983 724d 874d 0/29 auto-obsoleted due to no activity on 2023/09/30 04:06
linux-5.15 WARNING in smsusb_term_device -1 C error 124 724d 849d 0/3 auto-obsoleted due to no activity on 2023/09/30 15:31

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8 at kernel/workqueue.c:668 set_work_data kernel/workqueue.c:668 [inline]
WARNING: CPU: 0 PID: 8 at kernel/workqueue.c:668 clear_work_data kernel/workqueue.c:731 [inline]
WARNING: CPU: 0 PID: 8 at kernel/workqueue.c:668 __cancel_work_timer+0x4e2/0x520 kernel/workqueue.c:3519
Modules linked in:
CPU: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.6.95-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:set_work_data kernel/workqueue.c:668 [inline]
RIP: 0010:clear_work_data kernel/workqueue.c:731 [inline]
RIP: 0010:__cancel_work_timer+0x4e2/0x520 kernel/workqueue.c:3519
Code: 41 5c 41 5d 41 5e 41 5f 5d c3 e8 39 f4 2e 00 0f 0b e9 ed fd ff ff e8 2d f4 2e 00 e8 b8 c5 0f 09 e9 8e fe ff ff e8 1e f4 2e 00 <0f> 0b 43 80 3c 2e 00 0f 85 04 ff ff ff e9 07 ff ff ff e8 97 c4 0f
RSP: 0018:ffffc900000d6b40 EFLAGS: 00010293
RAX: ffffffff8156a242 RBX: ffff888144ba0448 RCX: ffff88801a645a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000d6c58 R08: ffff888144ba044f R09: 1ffff11028974089
R10: dffffc0000000000 R11: ffffed102897408a R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff11028974089 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056236a514e20 CR3: 0000000026190000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:183 [inline]
 smsusb_term_device+0xcb/0x220 drivers/media/usb/siano/smsusb.c:345
 smsusb_init_device drivers/media/usb/siano/smsusb.c:491 [inline]
 smsusb_probe+0x1708/0x1da0 drivers/media/usb/siano/smsusb.c:569
 usb_probe_interface+0x5a4/0xb00 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x25b/0xb40 drivers/base/dd.c:658
 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:800
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:830
 __device_attach_driver+0x2ca/0x520 drivers/base/dd.c:958
 bus_for_each_drv+0x24b/0x2d0 drivers/base/bus.c:459
 __device_attach+0x2b5/0x400 drivers/base/dd.c:1030
 bus_probe_device+0x180/0x260 drivers/base/bus.c:534
 device_add+0x85b/0xc20 drivers/base/core.c:3683
 usb_set_configuration+0x1a79/0x20c0 drivers/usb/core/message.c:2207
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x13d/0x280 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x25b/0xb40 drivers/base/dd.c:658
 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:800
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:830
 __device_attach_driver+0x2ca/0x520 drivers/base/dd.c:958
 bus_for_each_drv+0x24b/0x2d0 drivers/base/bus.c:459
 __device_attach+0x2b5/0x400 drivers/base/dd.c:1030
 bus_probe_device+0x180/0x260 drivers/base/bus.c:534
 device_add+0x85b/0xc20 drivers/base/core.c:3683
 usb_new_device+0xa31/0x1630 drivers/usb/core/hub.c:2632
 hub_port_connect drivers/usb/core/hub.c:5501 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5641 [inline]
 port_event drivers/usb/core/hub.c:5801 [inline]
 hub_event+0x2957/0x49c0 drivers/usb/core/hub.c:5883
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/03 02:59 linux-6.6.y 3f5b4c104b7d bc80e4f0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/07/10 16:33 linux-6.6.y 59a2de10b81a 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/07/04 14:59 linux-6.6.y 3f5b4c104b7d d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/07/02 00:13 linux-6.6.y 3f5b4c104b7d 091a06cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/07/02 00:08 linux-6.6.y 3f5b4c104b7d 091a06cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/06/30 17:37 linux-6.6.y 3f5b4c104b7d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
2025/06/30 17:37 linux-6.6.y 3f5b4c104b7d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in smsusb_term_device
* Struck through repros no longer work on HEAD.