syzbot

BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 15, name: ksoftirqd/0
preempt_count: 0, expected: 0
RCU nest depth: 2, expected: 2
INFO: lockdep is turned off.
irq event stamp: 2518
hardirqs last  enabled at (2517): [<ffffffff8190cba6>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline]
hardirqs last  enabled at (2517): [<ffffffff8190cba6>] finish_lock_switch kernel/sched/core.c:5105 [inline]
hardirqs last  enabled at (2517): [<ffffffff8190cba6>] finish_task_switch+0x266/0x950 kernel/sched/core.c:5223
hardirqs last disabled at (2518): [<ffffffff8af6f880>] __schedule+0x300/0x4c20 kernel/sched/core.c:6845
softirqs last  enabled at (2514): [<ffffffff8185046e>] ksoftirqd_run_end kernel/softirq.c:282 [inline]
softirqs last  enabled at (2514): [<ffffffff8185046e>] run_ksoftirqd+0xce/0x210 kernel/softirq.c:969
softirqs last disabled at (2508): [<ffffffff818e81ff>] smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Tainted: G        W           syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 __might_resched+0x44b/0x5d0 kernel/sched/core.c:8957
 __rt_spin_lock kernel/locking/spinlock_rt.c:48 [inline]
 rt_spin_lock+0xc7/0x2c0 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:44 [inline]
 kcov_remote_start+0x92/0x460 kernel/kcov.c:865
 kcov_remote_start_usb include/linux/kcov.h:55 [inline]
 kcov_remote_start_usb_softirq include/linux/kcov.h:89 [inline]
 __usb_hcd_giveback_urb+0x427/0x710 drivers/usb/core/hcd.c:1662
 usb_giveback_urb_bh+0x296/0x420 drivers/usb/core/hcd.c:1697
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 bh_worker+0x2b1/0x600 kernel/workqueue.c:3579
 tasklet_action+0xc/0x70 kernel/softirq.c:854
 handle_softirqs+0x22c/0x710 kernel/softirq.c:579
 run_ksoftirqd+0xac/0x210 kernel/softirq.c:968
 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>