------------[ cut here ]------------ WARNING: CPU: 0 PID: 9 at kernel/kcov.c:872 kcov_remote_start+0x5d9/0x6f0 kernel/kcov.c:872 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 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 41 93 ba 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 39 ab 01 09 89 c0 48 c7 c7 b8 fb a2 RSP: 0018:ffffc900000e7748 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff88801b2c8000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8b3ddd40 RDI: ffffffff8b3ddd00 RBP: ffffc900000e7a50 R08: 0000000000000000 R09: ffffffff8ac2ab41 R10: dffffc0000000000 R11: fffffbfff1dac5ef R12: ffff8880278ca000 R13: dffffc0000000000 R14: 0100000000000009 R15: ffff8880278a7000 FS: 0000000000000000(0000) GS:ffff888126df9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8e041256c0 CR3: 000000005b692000 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