INFO: task syz.0.5366:26110 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.5366      state:D stack:25672 pid:26110 tgid:26109 ppid:21681  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x125c/0x6730 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0xdd/0x2c0 kernel/sched/core.c:7326
 io_schedule+0x8a/0xf0 kernel/sched/core.c:8154
 folio_wait_bit_common+0x414/0xa70 mm/filemap.c:1323
 folio_lock include/linux/pagemap.h:1157 [inline]
 migrate_folio_unmap mm/migrate.c:1250 [inline]
 migrate_pages_batch+0x7a1/0x45c0 mm/migrate.c:1907
 migrate_pages_sync+0x4db/0x880 mm/migrate.c:2051
 migrate_pages+0x1a83/0x2850 mm/migrate.c:2133
 compact_zone+0x243c/0x4420 mm/compaction.c:2668
 compact_node+0x17f/0x2c0 mm/compaction.c:2937
 compact_nodes mm/compaction.c:2959 [inline]
 sysctl_compaction_handler mm/compaction.c:3010 [inline]
 sysctl_compaction_handler+0x141/0x210 mm/compaction.c:2997
 proc_sys_call_handler+0x47f/0x5a0 fs/proc/proc_sysctl.c:600
 iter_file_splice_write+0x830/0x10b0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x192/0x690 fs/splice.c:1159
 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x174/0x240 fs/splice.c:1228
 do_sendfile+0xadc/0xe20 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1426 [inline]
 __se_sys_sendfile64 fs/read_write.c:1418 [inline]
 __x64_sys_sendfile64+0x154/0x220 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd198b9de99
RSP: 002b:00007fd199a04028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd198e25fa0 RCX: 00007fd198b9de99
RDX: 00002000000000c0 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007fd198c33eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd198e26038 R14: 00007fd198e25fa0 R15: 00007fff40d73558
 </TASK>

Showing all locks held in the system:
1 lock held by ksoftirqd/1/28:
 #0: ffff88806a53b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x140 kernel/sched/core.c:667
1 lock held by khungtaskd/43:
 #0: ffffffff8ebe6180 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8ebe6180 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8ebe6180 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6775
3 locks held by kworker/1:1/50:
 #0: ffff88801bcc7940 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90000a3fd08 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff88802c1a21d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1102 [inline]
 #2: ffff88802c1a21d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x1c0/0x4a60 drivers/usb/core/hub.c:5899
3 locks held by kworker/3:1/60:
 #0: ffff88801bcaa940 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90000adfd08 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff888042585250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1b8/0x6310 drivers/net/netdevsim/fib.c:1490
2 locks held by kworker/u35:0/65:
 #0: ffff888027086940 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90000d37d08 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
4 locks held by sshd-session/5718:
3 locks held by kworker/0:5/5838:
 #0: ffff88801bcaa940 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90004cafd08 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff88805968a250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1b8/0x6310 drivers/net/netdevsim/fib.c:1490
3 locks held by kworker/2:5/7644:
 #0: ffff88801bcaa940 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90004c4fd08 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffffffff8ebf1c28 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x19e/0x3c0 kernel/rcu/tree_exp.h:343
1 lock held by udevd/8920:
 #0: ffff888027f97350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 block/bdev.c:948
2 locks held by kworker/u35:1/11336:
 #0: ffff888027086940 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc9000356fd08 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
2 locks held by kworker/u35:2/22022:
 #0: ffff888027086940 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc900036cfd08 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
2 locks held by getty/25485:
 #0: ffff888022b160a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031982e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
1 lock held by syz.0.5366/26110:
 #0: ffff88805e69e450 (sb_writers#3){.+.+}-{0:0}, at: splice_direct_to_actor+0x345/0xa30 fs/splice.c:1103
2 locks held by syz.5.6604/30879:
1 lock held by syz.4.6769/31542:
 #0: ffffffff8ebf1af8 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x6d0 kernel/rcu/tree.c:3857
1 lock held by rm/31599:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 43 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x21c/0x2a0 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x141/0x190 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xcb1/0x1030 kernel/hung_task.c:561
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1-3:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30517 Comm: syz.3.6506 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:in_softirq_really kernel/kcov.c:171 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data+0x24/0x90 kernel/kcov.c:246
Code: 90 90 90 90 90 90 65 8b 05 d9 ba 59 12 49 89 f8 49 89 f1 49 89 d2 65 48 8b 3d b0 ba 59 12 a9 00 01 ff 00 74 1b f6 c4 01 74 07 <a9> 00 00 ff 00 74 05 c3 cc cc cc cc 8b 87 24 17 00 00 85 c0 74 f1
RSP: 0000:ffffc900006a0b70 EFLAGS: 00000202
RAX: 0000000000000101 RBX: ffff8880587d5d90 RCX: ffffffff89c58e35
RDX: fffffff0a3da8872 RSI: 0000000000000000 RDI: ffff88804486a540
RBP: ffff888039dd1ac0 R08: 0000000000000006 R09: 0000000000000000
R10: fffffff0a3da8872 R11: 0000000000000000 R12: fffffff0a3da8872
R13: 0000000000000000 R14: 0000000000000000 R15: fffffff0a3da8872
FS:  0000000000000000(0000) GS:ffff8880d5ee7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7229ee7000 CR3: 0000000029008000 CR4: 0000000000352ef0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 pie_calculate_probability+0x545/0x990 net/sched/sch_pie.c:392
 fq_pie_timer+0x21a/0x5a0 net/sched/sch_fq_pie.c:402
 call_timer_fn+0x19a/0x610 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1ea/0x9b0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x19e/0x310 kernel/locking/lockdep.c:5893
Code: ff 65 0f c1 05 e3 5d 7e 12 83 f8 01 0f 85 27 01 00 00 9c 58 f6 c4 02 0f 85 12 01 00 00 41 f7 c6 00 02 00 00 0f 85 c8 00 00 00 <48> 8b 44 24 10 65 48 2b 05 ed 16 7e 12 0f 85 4d 01 00 00 48 83 c4
RSP: 0000:ffffc900040e7540 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8ebe6180 RCX: ffffc900040e754c
RDX: 0000000000000000 RSI: ffffffff8e17ea39 RDI: ffffffff8c401280
RBP: ffffffff81b7e6be R08: 0000000000000001 R09: 0000000000000007
R10: 0000000000000200 R11: 00000000000184e3 R12: ffff88804486a540
R13: ffffc900040e75f8 R14: 0000000000000202 R15: 0000000000000001
 rcu_lock_release include/linux/rcupdate.h:310 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
 unwind_next_frame+0x3c3/0x2090 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x162/0x1e0 mm/page_owner.c:165
 __reset_page_owner+0x84/0x190 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_pages_prepare+0x586/0xd80 mm/page_alloc.c:1451
 __free_contig_range_common+0x14f/0x250 mm/page_alloc.c:6897
 __free_contig_range mm/page_alloc.c:6942 [inline]
 free_pages_bulk+0x12a/0x200 mm/page_alloc.c:5257
 vm_area_free_pages+0xad/0x2b0 mm/vmalloc.c:3439
 vfree mm/vmalloc.c:3488 [inline]
 vfree+0x107/0x750 mm/vmalloc.c:3462
 kcov_put kernel/kcov.c:447 [inline]
 kcov_put kernel/kcov.c:443 [inline]
 kcov_close+0x34/0x60 kernel/kcov.c:554
 __fput+0x3ff/0xb50 fs/file_table.c:512
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x951/0x2ae0 kernel/exit.c:1009
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
 arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74be75e6ce
Code: Unable to access opcode bytes at 0x7f74be75e6a4.
RSP: 002b:00007f74bf596f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f74bf5976c0 RCX: 00007f74be75e6ce
RDX: 00007f74bf596fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f74be833eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f74bea26038 R14: 00007f74bea25fa0 R15: 00007ffe6c44dd48
 </TASK>
NMI backtrace for cpu 3
CPU: 3 UID: 0 PID: 30879 Comm: syz.5.6604 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:depot_fetch_stack+0x51/0xb0 lib/stackdepot.c:517
Code: e3 ff ff 01 00 83 eb 01 85 c0 75 2d 44 39 eb 73 44 48 8b 05 d1 22 4c 16 48 63 db 48 8b 04 d8 48 85 c0 74 51 4c 01 e0 8b 50 1c <85> d2 74 4f 5b 5d 41 5c 41 5d c3 cc cc cc cc be ff ff ff ff 48 c7
RSP: 0018:ffffc9000408ee88 EFLAGS: 00000286
RAX: ffff888058aa6ca0 RBX: 000000000000036e RCX: 0000000000000001
RDX: 0000000000008b36 RSI: ffffffff8e17ea39 RDI: ffffffff8c401280
RBP: 000000000594036f R08: 0000000000000003 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000002ca0
R13: 0000000000000a34 R14: 0000000000000000 R15: 000000000594036f
FS:  0000000000000000(0000) GS:ffff8880d60e7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa23a39ee9c CR3: 000000000e992000 CR4: 0000000000352ef0
DR0: 0000000000000002 DR1: 00000000000012ad DR2: 0000000000007611
DR3: 000000000000000a DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dec_stack_record_count mm/page_owner.c:234 [inline]
 __reset_page_owner+0xd7/0x190 mm/page_owner.c:332
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_unref_folios+0xa44/0x1710 mm/page_alloc.c:3011
 folios_put_refs+0x585/0xaa0 mm/swap.c:1057
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x5e5/0x1570 mm/shmem.c:1149
 shmem_truncate_range mm/shmem.c:1277 [inline]
 shmem_evict_inode+0x3a5/0xbe0 mm/shmem.c:1407
 evict+0x3c2/0xad0 fs/inode.c:825
 iput_final fs/inode.c:2019 [inline]
 iput.part.0+0x989/0x1050 fs/inode.c:2068
 iput+0x35/0x40 fs/inode.c:2034
 dentry_unlink_inode+0x284/0x470 fs/dcache.c:479
 dentry_kill+0x25d/0xc20 fs/dcache.c:826
 shrink_kill fs/dcache.c:1275 [inline]
 shrink_dentry_list+0x1e8/0x310 fs/dcache.c:1292
 shrink_dcache_tree+0x201/0x400 fs/dcache.c:1759
 do_one_tree fs/dcache.c:1795 [inline]
 shrink_dcache_for_umount+0x101/0x6c0 fs/dcache.c:1812
 generic_shutdown_super+0x7e/0x360 fs/super.c:625
 kill_anon_super+0x3a/0x60 fs/super.c:1232
 deactivate_locked_super+0xc1/0x1b0 fs/super.c:477
 deactivate_super fs/super.c:510 [inline]
 deactivate_super+0xe7/0x110 fs/super.c:506
 cleanup_mnt+0x21f/0x450 fs/namespace.c:1317
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x951/0x2ae0 kernel/exit.c:1009
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
 arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f299975e6ce
Code: Unable to access opcode bytes at 0x7f299975e6a4.
RSP: 002b:00007f29979f5f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f29979f66c0 RCX: 00007f299975e6ce
RDX: 00007f29979f5fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f2999833eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2999a26038 R14: 00007f2999a25fa0 R15: 00007fff588081f8
 </TASK>
NMI backtrace for cpu 2
CPU: 2 UID: 0 PID: 31600 Comm: rm Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data+0x0/0x90 kernel/kcov.c:246
Code: 6d fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <65> 8b 05 d9 ba 59 12 49 89 f8 49 89 f1 49 89 d2 65 48 8b 3d b0 ba
RSP: 0018:ffffc900044defd8 EFLAGS: 00000206
RAX: ffff88805a6accc0 RBX: 0000000000000008 RCX: ffffffff8bb23c79
RDX: 0000000000000300 RSI: 0000000000000300 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8d4f1de3
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880d5fe7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b0e8c2eb8 CR3: 000000003e6f2000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 mt_locked lib/maple_tree.c:709 [inline]
 mt_slot lib/maple_tree.c:715 [inline]
 mas_slot lib/maple_tree.c:748 [inline]
 mas_validate_parent_slot lib/maple_tree.c:6759 [inline]
 mt_validate+0x999/0x31e0 lib/maple_tree.c:6949
 validate_mm+0xa8/0x4e0 mm/vma.c:652
 __split_vma+0x98e/0xda0 mm/vma.c:570
 vms_gather_munmap_vmas+0x1d2/0x1720 mm/vma.c:1427
 __mmap_setup mm/vma.c:2439 [inline]
 __mmap_region+0x4a7/0x2db0 mm/vma.c:2756
 mmap_region+0x35d/0x620 mm/vma.c:2860
 do_mmap+0xc63/0x12f0 mm/mmap.c:560
 vm_mmap_pgoff+0x29e/0x470 mm/util.c:581
 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:606
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9b0ebad242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007ffd6da2bb98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f9b0e88e000 RCX: 00007f9b0ebad242
RDX: 0000000000000005 RSI: 000000000001c000 RDI: 00007f9b0e88e000
RBP: 0000000000000812 R08: 0000000000000003 R09: 0000000000008000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffd6da2bbe8
R13: 00007f9b0eb82ab0 R14: 00007ffd6da2c010 R15: 00000fffadb45776
 </TASK>