rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=7997, q=431)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955456-4294944953), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.0  R  running task    22320  8726   8664 0x80004002
Call Trace:
 <IRQ>
 sched_show_task.cold.99+0x2ee/0x35d kernel/sched/core.c:5954
 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:558 [inline]
 rcu_pending kernel/rcu/tree.c:3030 [inline]
 rcu_sched_clock_irq.cold.86+0xb55/0xc8b kernel/rcu/tree.c:2276
 update_process_times+0x23/0x50 kernel/time/timer.c:1726
 tick_sched_handle+0x77/0x140 kernel/time/tick-sched.c:171
 tick_sched_timer+0x43/0x100 kernel/time/tick-sched.c:1314
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x32f/0xb50 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x163/0x5f0 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_clear_bit_unlock_is_negative_byte arch/x86/include/asm/bitops.h:101 [inline]
RIP: 0010:clear_bit_unlock_is_negative_byte include/asm-generic/bitops/instrumented-lock.h:75 [inline]
RIP: 0010:unlock_page+0xe8/0x1a0 mm/filemap.c:1294
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 9d 00 00 00 49 8b 04 24 a8 01 74 5d be 08 00 00 00 48 89 df e8 68 97 1a 00 <f0> 80 23 fe 78 07 5b 41 5c 41 5d 5d c3 48 89 df 31 f6 e8 61 fc ff
RSP: 0018:ffffc90002c65db0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffffea000195f600 RCX: ffffffff818555e8
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffea000195f600
RBP: ffffc90002c65dc8 R08: fffff9400032bec1 R09: fffff9400032bec1
R10: fffff9400032bec0 R11: ffffea000195f607 R12: ffffea000195f600
R13: ffffea000195f608 R14: ffffea000195f600 R15: dffffc0000000000
 shrink_page_list+0x1541/0x3890 mm/vmscan.c:1429
 shrink_inactive_list+0x44f/0xc70 mm/vmscan.c:1945
 shrink_list mm/vmscan.c:2164 [inline]
 shrink_lruvec+0x702/0xf20 mm/vmscan.c:2482
 shrink_node_memcgs mm/vmscan.c:2671 [inline]
 shrink_node+0x356/0x1670 mm/vmscan.c:2777
 shrink_zones mm/vmscan.c:2980 [inline]
 do_try_to_free_pages+0x352/0x1330 mm/vmscan.c:3033
 try_to_free_mem_cgroup_pages+0x2a3/0x850 mm/vmscan.c:3355
 try_charge+0x5b0/0x1310 mm/memcontrol.c:2455
 mem_cgroup_try_charge+0x137/0x590 mm/memcontrol.c:6367
 __add_to_page_cache_locked+0x306/0xa40 mm/filemap.c:844
 add_to_page_cache_lru+0x153/0x580 mm/filemap.c:921
 ext4_mpage_readpages+0x3bd/0x1c70 fs/ext4/readpage.c:259
 ext4_readpages+0xc8/0xf0 fs/ext4/inode.c:3245
 read_pages+0xed/0x510 mm/readahead.c:126
 __do_page_cache_readahead+0x411/0x520 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 ondemand_readahead+0x428/0xbe0 mm/readahead.c:492
 page_cache_async_readahead+0x2ff/0x5a0 mm/readahead.c:574
 generic_file_buffered_read mm/filemap.c:2037 [inline]
 generic_file_read_iter+0xf15/0x15a0 mm/filemap.c:2302
 ext4_file_read_iter+0x194/0x540 fs/ext4/file.c:131
 call_read_iter include/linux/fs.h:1895 [inline]
 new_sync_read+0x3fa/0x7d0 fs/read_write.c:414
 __vfs_read+0x94/0x110 fs/read_write.c:427
 integrity_kernel_read+0x13a/0x1f0 security/integrity/iint.c:200
 ima_calc_file_hash_tfm+0x280/0x360 security/integrity/ima/ima_crypto.c:360
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:391 [inline]
 ima_calc_file_hash+0x170/0x460 security/integrity/ima/ima_crypto.c:456
 ima_collect_measurement+0x3f6/0x4f0 security/integrity/ima/ima_api.c:249
 process_measurement+0x955/0x16f0 security/integrity/ima/ima_main.c:326
 ima_file_check+0xc8/0x110 security/integrity/ima/ima_main.c:442
 do_last fs/namei.c:3494 [inline]
 path_openat+0x949/0x2d40 fs/namei.c:3607
 do_filp_open+0x171/0x240 fs/namei.c:3637
 do_sys_openat2+0x2e0/0x510 fs/open.c:1149
 do_sys_open+0x90/0xe0 fs/open.c:1165
 ksys_open include/linux/syscalls.h:1386 [inline]
 __do_sys_open fs/open.c:1171 [inline]
 __se_sys_open fs/open.c:1169 [inline]
 __x64_sys_open+0x79/0xb0 fs/open.c:1169
 do_syscall_64+0xca/0x5f0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a9e9
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fce0243bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a9e9
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000100
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce0243c6d4
R13: 00000000004fe41f R14: 00000000004df4a8 R15: 00000000ffffffff
rcu: rcu_preempt kthread starved for 10597 jiffies! g7997 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29360    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3386 [inline]
 __schedule+0x8a9/0x1970 kernel/sched/core.c:4082
 schedule+0xc3/0x2b0 kernel/sched/core.c:4156
 schedule_timeout+0x38b/0xad0 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1658 [inline]
 rcu_gp_kthread+0x9f2/0x1890 kernel/rcu/tree.c:1818
 kthread+0x331/0x3f0 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
sched: RT throttling activated