rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5464/1:b..l
	(detected by 0, t=10502 jiffies, g=18521, q=25 ncpus=2)
task:syz.0.223       state:R  running task     stack:24576 pid:5464  ppid:4252   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:seqcount_lockdep_reader_access+0x17b/0x1c0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 e4 9d 0f 00 eb 15 e8 dd 9d 0f 00 e8 b8 f7 9d 08 4d 85 e4 74 ea e8 ce 9d 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc90004cfed80 EFLAGS: 00000287
RAX: ffffffff81713942 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000cd59000 RSI: 00000000000169a8 RDI: 00000000000169a9
RBP: ffffc90004cfee28 R08: dffffc0000000000 R09: fffffbfff211706d
R10: fffffbfff211706d R11: 1ffffffff211706c R12: 0000000000000200
R13: dffffc0000000000 R14: 1ffff9200099fdb0 R15: dffffc0000000000
 ktime_get+0x31/0x270 kernel/time/timekeeping.c:846
 ktime_get_ns include/linux/timekeeping.h:154 [inline]
 blk_mq_start_request+0x126/0x6b0 block/blk-mq.c:1254
 loop_queue_rq+0x78/0xac0 drivers/block/loop.c:1843
 __blk_mq_issue_directly block/blk-mq.c:2631 [inline]
 __blk_mq_try_issue_directly+0x4ab/0x7a0 block/blk-mq.c:2684
 blk_mq_try_issue_directly+0x28/0x1f0 block/blk-mq.c:2708
 blk_mq_submit_bio+0x1221/0x1f80 block/blk-mq.c:3045
 __submit_bio+0x1a7/0x290 block/blk-core.c:591
 __submit_bio_noacct_mq block/blk-core.c:668 [inline]
 submit_bio_noacct_nocheck+0x7b4/0xa70 block/blk-core.c:697
 submit_bh fs/buffer.c:2707 [inline]
 __bread_slow fs/buffer.c:1177 [inline]
 __bread_gfp+0x1bb/0x330 fs/buffer.c:1370
 sb_bread_unmovable include/linux/buffer_head.h:344 [inline]
 ntfs_bread fs/ntfs3/fsntfs.c:994 [inline]
 ntfs_read_run_nb+0x4c7/0xe00 fs/ntfs3/fsntfs.c:1214
 ntfs_read_bh+0x3c/0x7c0 fs/ntfs3/fsntfs.c:1282
 mi_read+0x1e2/0x590 fs/ntfs3/record.c:133
 mi_format_new+0x1ba/0x5d0 fs/ntfs3/record.c:414
 ntfs_new_inode+0x64/0x100 fs/ntfs3/fsntfs.c:1664
 ntfs_create_inode+0x443/0x3470 fs/ntfs3/inode.c:1304
 ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3482 [inline]
 open_last_lookups fs/namei.c:3550 [inline]
 path_openat+0x1187/0x2e70 fs/namei.c:3780
 do_filp_open+0x1c1/0x3c0 fs/namei.c:3810
 do_sys_openat2+0x142/0x490 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f42a438e969
RSP: 002b:00007f42a518b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f42a45b5fa0 RCX: 00007f42a438e969
RDX: 0000000000000441 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f42a4410ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000014a R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f42a45b5fa0 R15: 00007ffd573f8448
 </TASK>
rcu: rcu_preempt kthread starved for 10550 jiffies! g18521 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27904 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:735