------------[ cut here ]------------ in_task() && kcov_mode_enabled(mode) WARNING: kernel/kcov.c:894 at kcov_remote_start+0x5bb/0x6f0 kernel/kcov.c:894, CPU#0: kworker/0:7/5888 Modules linked in: CPU: 0 UID: 0 PID: 5888 Comm: kworker/0:7 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:kcov_remote_start+0x5bb/0x6f0 kernel/kcov.c:894 Code: 03 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 fc 93 eb 02 90 0f 0b 90 eb d1 90 0f 0b 90 0f b7 83 c0 04 00 00 e9 b7 fa ff ff 90 <0f> 0b 90 eb 04 90 0f 0b 90 e8 47 f9 6a 09 89 c0 48 c7 c7 c0 52 75 RSP: 0018:ffffc90005cc7868 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff888031f0be00 RCX: 0000000080000001 RDX: 0000000000000000 RSI: ffffffff8baa4c60 RDI: ffffffff8baa4c20 RBP: ffffc90005cc7b70 R08: ffffffff8b325920 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8dfc3040 R12: 1ffff110063e1858 R13: dffffc0000000000 R14: 0100000000000003 R15: ffff88802a454000 FS: 0000000000000000(0000) GS:ffff888125ed4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f885653cff8 CR3: 000000005f2c0000 CR4: 00000000003526f0 Call Trace: kcov_remote_start_usb include/linux/kcov.h:53 [inline] hub_event+0x15d/0x4cf0 drivers/usb/core/hub.c:5889 process_one_work+0x93a/0x12b0 kernel/workqueue.c:3326 process_scheduled_works kernel/workqueue.c:3409 [inline] worker_thread+0xb05/0x10d0 kernel/workqueue.c:3490 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245