================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
kworker/1:17/4460 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff888077a18648 ((work_completion)(&(&host->detect)->work)){+.?.}-{0:0}, at: __flush_work+0x109/0xac0 kernel/workqueue.c:3072
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x1bc/0x4a0 kernel/locking/lockdep.c:5790
  process_one_work+0x7ec/0x1160 kernel/workqueue.c:2268
  worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
  kthread+0x29d/0x330 kernel/kthread.c:376
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
irq event stamp: 186810
hardirqs last  enabled at (186810): [<ffffffff815474ea>] __cancel_work_timer+0x36a/0x560 kernel/workqueue.c:3156
hardirqs last disabled at (186809): [<ffffffff81543e7a>] try_to_grab_pending+0xfa/0x890 kernel/workqueue.c:1267
softirqs last  enabled at (174726): [<ffffffff814f4aab>] __do_softirq kernel/softirq.c:630 [inline]
softirqs last  enabled at (174726): [<ffffffff814f4aab>] invoke_softirq kernel/softirq.c:470 [inline]
softirqs last  enabled at (174726): [<ffffffff814f4aab>] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
softirqs last disabled at (186745): [<ffffffff814f4aab>] __do_softirq kernel/softirq.c:630 [inline]
softirqs last disabled at (186745): [<ffffffff814f4aab>] invoke_softirq kernel/softirq.c:470 [inline]
softirqs last disabled at (186745): [<ffffffff814f4aab>] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679

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

       CPU0
       ----
  lock((work_completion)(&(&host->detect)->work));
  <Interrupt>
    lock((work_completion)(&(&host->detect)->work));

 *** DEADLOCK ***

4 locks held by kworker/1:17/4460:
 #0: ffff888018471938 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #1: ffffc90003397d00 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #2: ffffffff8d92d8a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #2: ffffffff8d92d8a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #2: ffffffff8d92d8a0 (rcu_read_lock){....}-{1:2}, at: gc_worker+0x25b/0x13d0 net/netfilter/nf_conntrack_core.c:1529
 #3: ffffc900001e0bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xcf/0x670 kernel/time/timer.c:1698

stack backtrace:
CPU: 1 PID: 4460 Comm: kworker/1:17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events_power_efficient gc_worker
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:4041
 mark_lock_irq+0xa9/0x900 kernel/locking/lockdep.c:4244
 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4706
 mark_usage kernel/locking/lockdep.c:-1 [inline]
 __lock_acquire+0xdf3/0x7ea0 kernel/locking/lockdep.c:5125
 lock_acquire+0x1bc/0x4a0 kernel/locking/lockdep.c:5790
 __flush_work+0x122/0xac0 kernel/workqueue.c:3072
 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3163
 mmc_free_host+0x15/0x40 drivers/mmc/core/host.c:672
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:189 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:241 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x32/0x80 kernel/kcov.c:309
Code: 54 25 80 7e 65 8b 0d 55 25 80 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 8a f8 15 00 00 <83> f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003397ad8 EFLAGS: 00000246
RAX: ffffffff887849ab RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880286c0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003397c30 R08: ffffffff919342d7 R09: 1ffffffff232685a
R10: dffffc0000000000 R11: fffffbfff232685b R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000040000 R15: 000000000001adde
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:359 [inline]
 gc_worker+0x31b/0x13d0 net/netfilter/nf_conntrack_core.c:1531
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
BUG: sleeping function called from invalid context at kernel/workqueue.c:3013
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4460, name: kworker/1:17
preempt_count: 100, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffffffff814f404d>] softirq_handle_begin kernel/softirq.c:434 [inline]
[<ffffffff814f404d>] handle_softirqs+0xfd/0x910 kernel/softirq.c:572
CPU: 1 PID: 4460 Comm: kworker/1:17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events_power_efficient gc_worker
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 __might_resched+0x489/0x5f0 kernel/sched/core.c:9970
 start_flush_work kernel/workqueue.c:3013 [inline]
 __flush_work+0x142/0xac0 kernel/workqueue.c:3075
 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3163
 mmc_free_host+0x15/0x40 drivers/mmc/core/host.c:672
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:189 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:241 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x32/0x80 kernel/kcov.c:309
Code: 54 25 80 7e 65 8b 0d 55 25 80 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 8a f8 15 00 00 <83> f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003397ad8 EFLAGS: 00000246
RAX: ffffffff887849ab RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880286c0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003397c30 R08: ffffffff919342d7 R09: 1ffffffff232685a
R10: dffffc0000000000 R11: fffffbfff232685b R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000040000 R15: 000000000001adde
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:359 [inline]
 gc_worker+0x31b/0x13d0 net/netfilter/nf_conntrack_core.c:1531
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
ODEBUG: object ffffc900001e09a0 is NOT on stack ffffc90003390000, but annotated.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4460 at lib/debugobjects.c:558 debug_object_is_on_stack lib/debugobjects.c:-1 [inline]
WARNING: CPU: 1 PID: 4460 at lib/debugobjects.c:558 lookup_object_or_alloc lib/debugobjects.c:591 [inline]
WARNING: CPU: 1 PID: 4460 at lib/debugobjects.c:558 __debug_object_init+0x18e/0x440 lib/debugobjects.c:672
Modules linked in:
CPU: 1 PID: 4460 Comm: kworker/1:17 Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events_power_efficient gc_worker
RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:558 [inline]
RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:591 [inline]
RIP: 0010:__debug_object_init+0x18e/0x440 lib/debugobjects.c:672
Code: 24 04 74 2f 41 ff c6 44 89 35 3e 36 bf 13 48 c7 c1 00 7a df 8a 48 c7 c7 60 7a df 8a 84 c0 48 0f 45 f9 48 89 de e8 f2 9a 0d 06 <0f> 0b eb 05 4c 8b 7c 24 18 4d 8d 65 10 4d 89 e6 49 c1 ee 03 41 0f
RSP: 0018:ffffc900001e0908 EFLAGS: 00010046
RAX: 0000000000000050 RBX: ffffc900001e09a0 RCX: aed1d9d973462600
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc900001e0587 R09: 1ffff9200003c0b0
R10: dffffc0000000000 R11: fffff5200003c0b1 R12: ffff8880286c0020
R13: ffff88807ead0620 R14: 0000000000000001 R15: ffffffff8a8d32c0
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14871a8286 CR3: 000000002a58b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __synchronize_srcu+0x227/0x350 kernel/rcu/srcutree.c:1241
 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline]
 wakeup_source_unregister+0x112/0x190 drivers/base/power/wakeup.c:242
 mmc_host_classdev_release+0x43/0xf0 drivers/mmc/core/host.c:77
 device_release+0x92/0x1c0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:681 [inline]
 kobject_release lib/kobject.c:712 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x217/0x450 lib/kobject.c:729
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:189 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:241 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x32/0x80 kernel/kcov.c:309
Code: 54 25 80 7e 65 8b 0d 55 25 80 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 8a f8 15 00 00 <83> f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003397ad8 EFLAGS: 00000246
RAX: ffffffff887849ab RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880286c0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003397c30 R08: ffffffff919342d7 R09: 1ffffffff232685a
R10: dffffc0000000000 R11: fffffbfff232685b R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000040000 R15: 000000000001adde
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:359 [inline]
 gc_worker+0x31b/0x13d0 net/netfilter/nf_conntrack_core.c:1531
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	54                   	push   %rsp
   1:	25 80 7e 65 8b       	and    $0x8b657e80,%eax
   6:	0d 55 25 80 7e       	or     $0x7e802555,%eax
   b:	81 e1 00 01 ff 00    	and    $0xff0100,%ecx
  11:	74 11                	je     0x24
  13:	81 f9 00 01 00 00    	cmp    $0x100,%ecx
  19:	75 5b                	jne    0x76
  1b:	83 ba 1c 16 00 00 00 	cmpl   $0x0,0x161c(%rdx)
  22:	74 52                	je     0x76
  24:	8b 8a f8 15 00 00    	mov    0x15f8(%rdx),%ecx
* 2a:	83 f9 03             	cmp    $0x3,%ecx <-- trapping instruction
  2d:	75 47                	jne    0x76
  2f:	48 8b 8a 00 16 00 00 	mov    0x1600(%rdx),%rcx
  36:	44 8b 8a fc 15 00 00 	mov    0x15fc(%rdx),%r9d
  3d:	49                   	rex.WB
  3e:	c1                   	.byte 0xc1
  3f:	e1                   	.byte 0xe1