hrtimer: interrupt took 77600 ns
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=4145, q=15)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295020982-4295010480), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor660 R  running task    27200  8104   8100 0x00000000
Call Trace:
 <IRQ>
 sched_show_task.cold+0x332/0x396 kernel/sched/core.c:5337
 print_other_cpu_stall kernel/rcu/tree.c:1430 [inline]
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0xb37/0xe19 kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1650
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1465 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1527
 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_release+0xe/0x8b0 kernel/locking/lockdep.c:3917
Code: 8b 4c 24 10 e9 9f fd ff ff 48 c7 c7 40 f7 36 8d e8 e7 17 4d 00 e9 dc fd ff ff 66 90 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 <41> 55 49 89 d5 41 54 55 48 89 fd 53 48 83 ec 78 48 c7 44 24 18 b3
RSP: 0018:ffff88808d1f72e8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff817c4c87
RDX: ffffffff817c4afd RSI: 0000000000000001 RDI: ffffffff89f85fa0
RBP: ffffea0002192f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea0002192f80 R14: ffff8880b547fc58 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:247 [inline]
 rcu_read_unlock include/linux/rcupdate.h:681 [inline]
 find_get_entry+0x4f4/0x8a0 mm/filemap.c:1491
 pagecache_get_page+0x56/0xd50 mm/filemap.c:1564
 grab_cache_page_write_begin+0x6a/0xa0 mm/filemap.c:3120
 ext4_da_write_begin+0x2ba/0x10e0 fs/ext4/inode.c:3075
 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
 ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272
 call_write_iter include/linux/fs.h:1821 [inline]
 do_iter_readv_writev+0x668/0x790 fs/read_write.c:681
 do_iter_write+0x182/0x5d0 fs/read_write.c:960
 vfs_iter_write+0x70/0xa0 fs/read_write.c:973
 iter_file_splice_write+0x60d/0xbb0 fs/splice.c:750
 do_splice_from fs/splice.c:852 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1025
 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980
 do_splice_direct+0x1a7/0x270 fs/splice.c:1068
 do_sendfile+0x550/0xc30 fs/read_write.c:1447
 __do_sys_sendfile64 fs/read_write.c:1502 [inline]
 __se_sys_sendfile64+0xc4/0x160 fs/read_write.c:1494
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc26a3a76b9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe71fb5248 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc26a3a76b9
RDX: 00000000200001c0 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe71fb5270 R09: 00007ffe71fb5270
R10: 000000000200a198 R11: 0000000000000246 R12: 00007ffe71fb526c
R13: 0000000000000000 R14: 00007ffe71fb5280 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10502 jiffies! g4145 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29208    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x4cf/0xfe0 kernel/time/timer.c:1818
 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415