rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=c8d/1/0x4000000000000000 softirq=206191/206192 fqs=5212 
	(t=10502 jiffies g=345777 q=438)
NMI backtrace for cpu 1
CPU: 1 PID: 10820 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__might_sleep+0x0/0x150 kernel/sched/core.c:9456
Code: c0 99 2a 90 e8 f1 4b 6e 00 e9 6f fe ff ff 48 c7 c7 80 f1 60 8b e8 f0 4b 6e 00 e9 87 fe ff ff e8 d6 4b 6e 00 e9 ec fe ff ff 90 <48> b8 00 00 00 00 00 fc ff df 41 54 41 89 f4 55 48 89 fd 53 65 48
RSP: 0018:ffffc90018e37988 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000400cc0 RCX: ffffc90018e37918
RDX: 1ffff110035a34ea RSI: 00000000000000e6 RDI: ffffffff8b18a01d
RBP: ffff888010c42640 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a109b640
R13: 0000000000400cc0 R14: 0000000000000020 R15: ffffffff81e32f17
 might_alloc include/linux/sched/mm.h:230 [inline]
 slab_pre_alloc_hook mm/slab.h:492 [inline]
 slab_alloc_node mm/slub.c:3148 [inline]
 slab_alloc mm/slub.c:3242 [inline]
 kmem_cache_alloc_trace+0x25d/0x2c0 mm/slub.c:3259
 kmalloc include/linux/slab.h:590 [inline]
 io_add_buffers fs/io_uring.c:4405 [inline]
 io_provide_buffers fs/io_uring.c:4439 [inline]
 io_issue_sqe+0x2887/0x7010 fs/io_uring.c:6705
 __io_queue_sqe fs/io_uring.c:6974 [inline]
 io_queue_sqe fs/io_uring.c:7016 [inline]
 io_submit_sqe fs/io_uring.c:7219 [inline]
 io_submit_sqes+0x1bca/0x8a20 fs/io_uring.c:7325
 __do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10039
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9bbf12bae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9bbc6a1188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f9bbf23ef60 RCX: 00007f9bbf12bae9
RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003
RBP: 00007f9bbf185f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9bbf772b2f R14: 00007f9bbc6a1300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	90                   	nop
   1:	e8 f1 4b 6e 00       	callq  0x6e4bf7
   6:	e9 6f fe ff ff       	jmpq   0xfffffe7a
   b:	48 c7 c7 80 f1 60 8b 	mov    $0xffffffff8b60f180,%rdi
  12:	e8 f0 4b 6e 00       	callq  0x6e4c07
  17:	e9 87 fe ff ff       	jmpq   0xfffffea3
  1c:	e8 d6 4b 6e 00       	callq  0x6e4bf7
  21:	e9 ec fe ff ff       	jmpq   0xffffff12
  26:	90                   	nop
* 27:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax <-- trapping instruction
  2e:	fc ff df
  31:	41 54                	push   %r12
  33:	41 89 f4             	mov    %esi,%r12d
  36:	55                   	push   %rbp
  37:	48 89 fd             	mov    %rdi,%rbp
  3a:	53                   	push   %rbx
  3b:	65                   	gs
  3c:	48                   	rex.W