------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff81a0443b>] prepare_to_swait_event+0x1fb/0x350 kernel/sched/swait.c:118
WARNING: kernel/sched/core.c:9191 at __might_sleep+0x92/0xf0 kernel/sched/core.c:9187, CPU#1: rcu_exp_gp_kthr/19
Modules linked in:
CPU: 1 UID: 0 PID: 19 Comm: rcu_exp_gp_kthr Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__might_sleep+0xac/0xf0 kernel/sched/core.c:9187
Code: 00 00 48 89 3c 24 41 89 f5 4c 8d 35 ce c0 e6 0f 43 80 3c 3c 00 74 08 48 89 df e8 af 3f a2 00 48 8b 0b 4c 89 f7 89 ee 48 89 ca <67> 48 0f b9 3a 44 89 ee 48 8b 3c 24 eb b5 44 89 f1 80 e1 07 80 c1
RSP: 0018:ffffc90000a18c08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88801f2db7f0 RCX: ffffffff81a0443b
RDX: ffffffff81a0443b RSI: 0000000000000002 RDI: ffffffff917d7090
RBP: 0000000000000002 R08: 0000000000000100 R09: 1ffffffff22f4e2f
R10: dffffc0000000000 R11: fffffbfff22f4e30 R12: 1ffff11003e5b6fe
R13: 00000000000011d1 R14: ffffffff917d7090 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0788bf2078 CR3: 000000007e212000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4561
 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700
 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386
 run_timer_base kernel/time/timer.c:2395 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
 handle_softirqs+0x226/0x860 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:221
Code: f7 e8 4d bf b8 f5 f7 c3 00 02 00 00 74 05 e8 40 0e e5 f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 84 bc a9 f5 65 48 8b 05 0c c0 aa 08 48 85 c0 74 18 5b 41 5e e9
RSP: 0018:ffffc90000187ba8 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000286 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e46914c RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff917a717f R09: 1ffffffff22f4e2f
R10: dffffc0000000000 R11: fffffbfff22f4e30 R12: ffff88801f2d9f40
R13: 1ffff92000030f95 R14: ffffffff8fd62d20 R15: ffffffff8fd62d60
 prepare_to_swait_event+0x322/0x350 kernel/sched/swait.c:120
 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:545 [inline]
 synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:664 [inline]
 rcu_exp_wait_wake kernel/rcu/tree_exp.h:695 [inline]
 rcu_exp_sel_wait_wake+0x820/0x1170 kernel/rcu/tree_exp.h:731
 kthread_worker_fn+0x4eb/0xb20 kernel/kthread.c:1025
 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>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 89 3c 24          	mov    %rdi,(%rsp)
   6:	41 89 f5             	mov    %esi,%r13d
   9:	4c 8d 35 ce c0 e6 0f 	lea    0xfe6c0ce(%rip),%r14        # 0xfe6c0de
  10:	43 80 3c 3c 00       	cmpb   $0x0,(%r12,%r15,1)
  15:	74 08                	je     0x1f
  17:	48 89 df             	mov    %rbx,%rdi
  1a:	e8 af 3f a2 00       	call   0xa23fce
  1f:	48 8b 0b             	mov    (%rbx),%rcx
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	89 ee                	mov    %ebp,%esi
  27:	48 89 ca             	mov    %rcx,%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	44 89 ee             	mov    %r13d,%esi
  32:	48 8b 3c 24          	mov    (%rsp),%rdi
  36:	eb b5                	jmp    0xffffffed
  38:	44 89 f1             	mov    %r14d,%ecx
  3b:	80 e1 07             	and    $0x7,%cl
  3e:	80                   	.byte 0x80
  3f:	c1                   	.byte 0xc1