rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=00e/1/0x4000000000000002 softirq=26917/26926 fqs=5235 
	(t=10500 jiffies g=36945 q=49296)
NMI backtrace for cpu 0
CPU: 0 PID: 26996 Comm: syz-executor.2 Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2736 [inline]
 rcu_sched_clock_irq.cold+0x4dd/0xc13 kernel/rcu/tree.c:2183
 update_process_times+0x32/0x80 kernel/time/timer.c:1639
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1296
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1106 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1131
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:199
Code: c0 60 f4 d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 75 de 94 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 b2 ab 10 fa 65 8b 05 03 e8 c3 78 85 c0 74 06 41
RSP: 0018:ffff88804f526028 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a5e8c RBX: ffff88804f5266c0 RCX: 1ffffffff134b5ce
RDX: dffffc0000000000 RSI: ffffffff8177f1ae RDI: ffffffff873e15c8
RBP: ffff88804f526030 R08: ffff88808f6f4600 R09: ffffed1025ffff71
R10: ffffed1025ffff70 R11: ffff88812ffffb83 R12: ffff88812ffffb80
R13: 000000000000001d R14: 000000000000001b R15: ffff88812ffffb80
 spin_unlock_irq include/linux/spinlock.h:388 [inline]
 shrink_inactive_list+0x452/0xe30 mm/vmscan.c:1991
 shrink_list mm/vmscan.c:2231 [inline]
 shrink_node_memcg+0x621/0x1430 mm/vmscan.c:2496
 shrink_node+0x294/0x16b0 mm/vmscan.c:2711
 shrink_zones mm/vmscan.c:2942 [inline]
 do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3000
 try_to_free_mem_cgroup_pages+0x314/0xa80 mm/vmscan.c:3300
 try_charge+0x602/0x1440 mm/memcontrol.c:2436
 mem_cgroup_try_charge+0x136/0x590 mm/memcontrol.c:6205
 __add_to_page_cache_locked+0x43f/0xec0 mm/filemap.c:857
 add_to_page_cache_lru+0x1d8/0x790 mm/filemap.c:934
 ext4_mpage_readpages+0x40b/0x1c70 fs/ext4/readpage.c:134
 ext4_readpages+0xe7/0x130 fs/ext4/inode.c:3388
 read_pages+0x108/0x540 mm/readahead.c:126
 __do_page_cache_readahead+0x4e0/0x5d0 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 ondemand_readahead+0x561/0xd40 mm/readahead.c:492
 page_cache_async_readahead mm/readahead.c:574 [inline]
 page_cache_async_readahead+0x43c/0x7c0 mm/readahead.c:547
 generic_file_buffered_read mm/filemap.c:2079 [inline]
 generic_file_read_iter+0x1239/0x1ce0 mm/filemap.c:2344
 ext4_file_read_iter fs/ext4/file.c:77 [inline]
 ext4_file_read_iter+0x1d6/0x420 fs/ext4/file.c:65
 call_read_iter include/linux/fs.h:1864 [inline]
 new_sync_read+0x4d7/0x800 fs/read_write.c:414
 __vfs_read+0xe1/0x110 fs/read_write.c:427
 integrity_kernel_read+0x157/0x210 security/integrity/iint.c:200
 ima_calc_file_hash_tfm+0x2e3/0x3e0 security/integrity/ima/ima_crypto.c:352
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:381 [inline]
 ima_calc_file_hash+0x1aa/0x570 security/integrity/ima/ima_crypto.c:446
 ima_collect_measurement+0x50f/0x5c0 security/integrity/ima/ima_api.c:239
 process_measurement+0xcc9/0x16a0 security/integrity/ima/ima_main.c:311
 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:422
 do_last fs/namei.c:3420 [inline]
 path_openat+0x1142/0x4630 fs/namei.c:3533
 do_filp_open+0x1a1/0x280 fs/namei.c:3563
 do_sys_open+0x3fe/0x5d0 fs/open.c:1089
 __do_sys_open fs/open.c:1107 [inline]
 __se_sys_open fs/open.c:1102 [inline]
 __x64_sys_open+0x7e/0xc0 fs/open.c:1102
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc085152c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc0851536d4
R13: 00000000004f907f R14: 00000000004dac90 R15: 00000000ffffffff