------------[ cut here ]------------ WARNING: CPU: 0 PID: 5953 at kernel/kcov.c:872 kcov_remote_start+0x5d9/0x6f0 kernel/kcov.c:872 Modules linked in: CPU: 0 UID: 0 PID: 5953 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:kcov_remote_start+0x5d9/0x6f0 kernel/kcov.c:872 Code: 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 01 cc bb 02 90 0f 0b 90 e9 62 fa ff ff 90 0f 0b 90 0f b7 83 80 04 00 00 e9 a3 fa ff ff 90 <0f> 0b 90 eb 04 90 0f 0b 90 e8 99 74 03 09 89 c0 48 c7 c7 b8 fb a3 RSP: 0000:ffffc90005fd7748 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff888024b5bc00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8b3dd9c0 RDI: ffffffff8b3dd980 RBP: ffffc90005fd7a50 R08: 0000000000000000 R09: ffffffff8ac4dba1 R10: dffffc0000000000 R11: fffffbfff1dac84f R12: ffff8881457f5000 R13: dffffc0000000000 R14: 0100000000000004 R15: ffff8881457f3000 FS: 0000000000000000(0000) GS:ffff888126de9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c31a7ad CR3: 00000000358b6000 CR4: 00000000003526f0 Call Trace: kcov_remote_start_usb include/linux/kcov.h:55 [inline] hub_event+0x158/0x4a20 drivers/usb/core/hub.c:5888 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245