================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
ksoftirqd/1/24 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff88804ba728e8 ((wq_completion)bond9#2){+.?.}-{0:0}, at: spin_lock include/linux/spinlock.h:347 [inline]
ffff88804ba728e8 ((wq_completion)bond9#2){+.?.}-{0:0}, at: tcp_tsq_handler+0x29/0x200 net/ipv4/tcp_output.c:1291
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5908
  process_one_work kernel/workqueue.c:3362 [inline]
  process_scheduled_works+0xbe1/0x1630 kernel/workqueue.c:3470
  worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551
  kthread+0x38b/0x480 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
irq event stamp: 3161590
hardirqs last  enabled at (3161590): [<ffffffff8a49b29d>] tcp_tsq_workfn+0x20d/0x410 net/ipv4/tcp_output.c:1315
hardirqs last disabled at (3161589): [<ffffffff8a49b17b>] tcp_tsq_workfn+0xeb/0x410 net/ipv4/tcp_output.c:1313
softirqs last  enabled at (3161580): [<ffffffff81890dd6>] run_ksoftirqd+0x36/0x60 kernel/softirq.c:1108
softirqs last disabled at (3161585): [<ffffffff81890dd6>] run_ksoftirqd+0x36/0x60 kernel/softirq.c:1108

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock((wq_completion)bond9#2);
  <Interrupt>
    lock((wq_completion)bond9#2);

 *** DEADLOCK ***

locks held by ksoftirqd/1/24: 2, last CPU#1:
 #0: ffff88801b02d540 ((wq_completion)events_bh){+.-.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff88801b02d540 ((wq_completion)events_bh){+.-.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff88801b02d540 ((wq_completion)events_bh){+.-.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
 #0: ffff88801b02d540 ((wq_completion)events_bh){+.-.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
 #1: ffffc900001e7b80 ((work_completion)(&tsq->work)){+.-.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc900001e7b80 ((work_completion)(&tsq->work)){+.-.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc900001e7b80 ((work_completion)(&tsq->work)){+.-.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
 #1: ffffc900001e7b80 ((work_completion)(&tsq->work)){+.-.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470

stack backtrace:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_usage_bug+0x28c/0x2e0 kernel/locking/lockdep.c:4058
 valid_state+0xbe/0xf0 kernel/locking/lockdep.c:4072
 mark_lock_irq+0x36/0x380 kernel/locking/lockdep.c:4283
 mark_lock+0x117/0x190 kernel/locking/lockdep.c:4769
 mark_usage kernel/locking/lockdep.c:-1 [inline]
 __lock_acquire+0x6b7/0x2e50 kernel/locking/lockdep.c:5208
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5908
 __raw_spin_lock include/linux/spinlock_api_smp.h:190 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:173
 spin_lock include/linux/spinlock.h:347 [inline]
 tcp_tsq_handler+0x29/0x200 net/ipv4/tcp_output.c:1291
 tcp_tsq_workfn+0x384/0x410 net/ipv4/tcp_output.c:1325
 process_one_work kernel/workqueue.c:3387 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470
 bh_worker+0x451/0x870 kernel/workqueue.c:3773
 tasklet_action+0xc/0x70 kernel/softirq.c:997
 handle_softirqs+0x226/0x860 kernel/softirq.c:645
 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1108
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x480 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
 </TASK>
EXT4-fs (loop3): error count since last fsck: 1
EXT4-fs (loop3): initial error at time 1786514420: ext4_mb_mark_diskspace_used:4223
EXT4-fs (loop3): last error at time 1786514420: ext4_mb_mark_diskspace_used:4223