------------[ cut here ]------------ in_task() && kcov_mode_enabled(mode) WARNING: kernel/kcov.c:884 at kcov_remote_start+0x5d8/0x710 kernel/kcov.c:884, CPU#1: kworker/1:0/32 Modules linked in: CPU: 1 UID: 0 PID: 32 Comm: kworker/1:0 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:kcov_remote_start+0x5d8/0x710 kernel/kcov.c:884 Code: 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 f2 f8 e5 02 90 0f 0b 90 e9 62 fa ff ff 90 0f 0b 90 0f b7 83 c0 04 00 00 e9 a3 fa ff ff 90 <0f> 0b 90 eb 04 90 0f 0b 90 e8 aa c4 63 09 89 c0 48 c7 c7 90 a2 70 RSP: 0018:ffffc90000a6f828 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff88801deadc40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8ba85b40 RDI: ffffffff8ba85b00 RBP: ffffc90000a6fb30 R08: ffffffff8b2ad9d0 R09: ffffffff8dfc8240 R10: dffffc0000000000 R11: fffffbfff1f1597f R12: ffff888029ff0000 R13: dffffc0000000000 R14: 0100000000000002 R15: ffff888029898000 FS: 0000000000000000(0000) GS:ffff88812601f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3a8e184ff8 CR3: 0000000031f66000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: kcov_remote_start_usb include/linux/kcov.h:55 [inline] hub_event+0x150/0x4f60 drivers/usb/core/hub.c:5889 process_one_work+0x98b/0x1630 kernel/workqueue.c:3306 process_scheduled_works kernel/workqueue.c:3389 [inline] worker_thread+0xb49/0x1140 kernel/workqueue.c:3470 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