Hello,
syzbot found the following issue on:
HEAD commit: 6e2fd6534337 Linux 5.15.213
git tree: linux-5.15.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=148a4bb9580000
kernel config:
https://syzkaller.appspot.com/x/.config?x=f161cbc9aef65db0
dashboard link:
https://syzkaller.appspot.com/bug?extid=f62394b2df7895a14882
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image:
https://storage.googleapis.com/syzbot-assets/d7b46606b13d/disk-6e2fd653.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/da120fdeb081/vmlinux-6e2fd653.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/3c2643457e3f/bzImage-6e2fd653.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+f62394...@syzkaller.appspotmail.com
------------[ cut here ]------------
URB ffff88801e8fe700 submitted while active
WARNING: CPU: 0 PID: 4258 at drivers/usb/core/urb.c:378 usb_submit_urb+0xfba/0x18d0 drivers/usb/core/urb.c:378
Modules linked in:
CPU: 0 PID: 4258 Comm: kworker/0:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0xfba/0x18d0 drivers/usb/core/urb.c:378
Code: c5 8a 44 89 ea e8 c6 d8 d6 03 e9 f3 fb ff ff e8 5c c9 96 fb c6 05 e5 22 95 07 01 48 c7 c7 20 37 c5 8a 48 89 de e8 66 f6 d2 03 <0f> 0b e9 bc f0 ff ff e8 3a c9 96 fb eb 1f e8 33 c9 96 fb 44 8b 64
RSP: 0018:ffffc900031deda0 EFLAGS: 00010246
RAX: 3ed29b0288069e00 RBX: ffff88801e8fe700 RCX: 0000000000100000
RDX: ffffc90013ef9000 RSI: 000000000001476a RDI: 000000000001476b
RBP: 1ffff1100c08130a R08: ffffc900031de8c7 R09: 1ffff9200063bd18
R10: dffffc0000000000 R11: fffff5200063bd19 R12: 0000000000000cc0
R13: 1ffff1100c081309 R14: ffff88801e8fe708 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd2649a58 CR3: 000000002371e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
port100_send_frame_async drivers/nfc/port100.c:783 [inline]
port100_send_cmd_async+0x81c/0xc60 drivers/nfc/port100.c:879
port100_send_cmd_sync drivers/nfc/port100.c:919 [inline]
port100_set_command_type+0x1c4/0x380 drivers/nfc/port100.c:990
port100_probe+0x9ea/0xdb0 drivers/nfc/port100.c:1570
usb_probe_interface+0x5be/0xae0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x276/0xc70 drivers/base/dd.c:595
__driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775
driver_probe_device+0x4f/0x420 drivers/base/dd.c:805
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:927
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a7/0x480 drivers/base/dd.c:999
bus_probe_device+0xba/0x1d0 drivers/base/bus.c:489
device_add+0xbcf/0x1050 drivers/base/core.c:3427
usb_set_configuration+0x19d5/0x2030 drivers/usb/core/message.c:2223
usb_generic_driver_probe+0x89/0x150 drivers/usb/core/generic.c:238
usb_probe_device+0x126/0x250 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x276/0xc70 drivers/base/dd.c:595
__driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775
driver_probe_device+0x4f/0x420 drivers/base/dd.c:805
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:927
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a7/0x480 drivers/base/dd.c:999
bus_probe_device+0xba/0x1d0 drivers/base/bus.c:489
device_add+0xbcf/0x1050 drivers/base/core.c:3427
usb_new_device+0x9f6/0x15d0 drivers/usb/core/hub.c:2632
hub_port_connect drivers/usb/core/hub.c:5497 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5637 [inline]
port_event drivers/usb/core/hub.c:5799 [inline]
hub_event+0x2b8d/0x5260 drivers/usb/core/hub.c:5881
process_one_work+0x867/0xff0 kernel/workqueue.c:2310
worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
kthread+0x42e/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
---
This report is generated by a bot. It may contain errors.
See
https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at
syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup