------------[ cut here ]------------ URB ffff888034109e00 submitted while active WARNING: drivers/usb/core/urb.c:380 at usb_submit_urb+0x7b/0x18b0 drivers/usb/core/urb.c:380, CPU#1: kworker/1:2/798 Modules linked in: CPU: 1 UID: 0 PID: 798 Comm: kworker/1:2 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Workqueue: events wdm_rxwork RIP: 0010:usb_submit_urb+0x7e/0x18b0 drivers/usb/core/urb.c:380 Code: 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 17 aa ef fa 49 83 3e 00 74 40 e8 4c 92 85 fa 48 8d 3d 25 2c 00 09 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 31 92 85 fa eb 05 e8 2a 92 RSP: 0018:ffffc90003d87a70 EFLAGS: 00010293 RAX: ffffffff87405bb4 RBX: ffff888034109e00 RCX: ffff888026131e40 RDX: 0000000000000000 RSI: ffff888034109e00 RDI: ffffffff904087e0 RBP: 0000000000000001 R08: ffffffff903352b7 R09: 1ffffffff2066a56 R10: dffffc0000000000 R11: fffffbfff2066a57 R12: 0000000000000cc0 R13: 1ffff11004475512 R14: ffff888034109e08 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125116000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b334fd000 CR3: 000000006b6c2000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: wdm_rxwork+0x101/0x1e0 drivers/usb/class/cdc-wdm.c:995 process_one_work+0x949/0x1650 kernel/workqueue.c:3279 process_scheduled_works kernel/workqueue.c:3362 [inline] worker_thread+0xb46/0x1140 kernel/workqueue.c:3443 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 89 f0 mov %esi,%eax 2: 48 c1 e8 03 shr $0x3,%rax 6: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) b: 74 08 je 0x15 d: 4c 89 f7 mov %r14,%rdi 10: e8 17 aa ef fa call 0xfaefaa2c 15: 49 83 3e 00 cmpq $0x0,(%r14) 19: 74 40 je 0x5b 1b: e8 4c 92 85 fa call 0xfa85926c 20: 48 8d 3d 25 2c 00 09 lea 0x9002c25(%rip),%rdi # 0x9002c4c 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: b8 f0 ff ff ff mov $0xfffffff0,%eax 34: eb 11 jmp 0x47 36: e8 31 92 85 fa call 0xfa85926c 3b: eb 05 jmp 0x42 3d: e8 .byte 0xe8 3e: 2a .byte 0x2a 3f: 92 xchg %eax,%edx