INFO: task syz.8.364:5968 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.364 state:D stack:0 pid:5968 tgid:5968 ppid:5487 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x5e4/0xb74 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1e0c/0x38cc kernel/sched/core.c:7277 __schedule_loop kernel/sched/core.c:7354 [inline] schedule+0x1b4/0x274 kernel/sched/core.c:7369 schedule_timeout+0x68/0x1e4 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common kernel/sched/completion.c:121 [inline] wait_for_common kernel/sched/completion.c:132 [inline] wait_for_completion+0x1b8/0x414 kernel/sched/completion.c:153 __synchronize_srcu+0x1c8/0x208 kernel/rcu/srcutree.c:1477 synchronize_srcu+0x668/0x8dc kernel/rcu/srcutree.c:-1 mmu_notifier_unregister+0x33c/0x444 mm/mmu_notifier.c:877 kvm_destroy_vm virt/kvm/kvm_main.c:1277 [inline] kvm_put_kvm+0x69c/0xbbc virt/kvm/kvm_main.c:1332 kvm_vm_release+0x58/0x78 virt/kvm/kvm_main.c:1355 __fput+0x4ac/0x978 fs/file_table.c:512 ____fput+0x20/0x30 fs/file_table.c:540 task_work_run+0x1b8/0x250 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x110/0x188 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] arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:108 [inline] el0_svc+0x18c/0x240 arch/arm64/kernel/entry-common.c:759 el0t_64_sync_handler+0x68/0xdc arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 Showing all locks held in the system: locks held by khungtaskd/26: 1, last CPU#0: #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6871 locks held by klogd/3187: 1, last CPU#0: #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: sock_def_readable+0xd4/0x7f0 net/core/sock.c:3658 locks held by getty/3252: 2, on CPU#0: #0: 65f00000123e20a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: 9dff80008cd2b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x314/0x11f8 drivers/tty/n_tty.c:2211 locks held by syz-executor/3382: 2, last CPU#0: #0: 96f00000156461f8 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline] #0: 96f00000156461f8 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0xf4/0xb64 mm/mmap.c:1299 #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x50/0x22c mm/pgtable-generic.c:290 locks held by kworker/u4:7/3492: 3, last CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff8000a3857ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff8000a3857ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: d9f00000262a8a58 (&devlink->lock_key#4){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by kworker/u4:0/4188: 2, on CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008f947ce8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008f947ce8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 locks held by kworker/u4:4/4628: 3, last CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008f0c7ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008f0c7ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: 53f0000026538258 (&devlink->lock_key#8){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by kworker/u4:3/5070: 3, last CPU#0: #0: a6f000000d033d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: a6f000000d033d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008f7a7ce8 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008f7a7ce8 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by kworker/u4:10/5084: 2, on CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008e157ce8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008e157ce8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 locks held by kworker/u4:13/5587: 3, last CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008ef27ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008ef27ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: caf0000027666a58 (&devlink->lock_key#9){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by kworker/u4:9/5824: 3, last CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008f887ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008f887ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: 50f000001ee95258 (&devlink->lock_key#3){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by syz.7.363/5959: 2, last CPU#0: #0: ffff80008801bf70 (srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline] #0: ffff80008801bf70 (srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline] #0: ffff80008801bf70 (srcu){.+.+}-{0:0}, at: mmu_notifier_unregister+0xdc/0x444 mm/mmu_notifier.c:855 #1: 31f000001fe5b530 (&kvm->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline] #1: 31f000001fe5b530 (&kvm->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline] #1: 31f000001fe5b530 (&kvm->srcu){.+.+}-{0:0}, at: kvm_mmu_notifier_release+0x50/0xc4 virt/kvm/kvm_main.c:874 locks held by kworker/u4:11/5966: 3, last CPU#0: #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: eef000000d034140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008fc57ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008fc57ce8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 #2: 50f000001ee95258 (&devlink->lock_key#3){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:314 locks held by kworker/u4:14/6029: 2, last CPU#0: #0: a6f000000d033d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: a6f000000d033d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0xadc/0x16b4 kernel/workqueue.c:3479 #1: ffff80008fdf7ce8 ((gc_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline] #1: ffff80008fdf7ce8 ((gc_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xafc/0x16b4 kernel/workqueue.c:3479 locks held by rm/6139: 2, last CPU#0: #0: 1df00000267ef6f8 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline] #0: 1df00000267ef6f8 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x12c/0x3cc mm/util.c:579 #1: 7df000000db7f578 (&mapping->i_mmap_rwsem){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:507 [inline] #1: 7df000000db7f578 (&mapping->i_mmap_rwsem){++++}-{4:4}, at: vma_prepare+0x88/0x5b4 mm/vma.c:346 locks held by modprobe/6141: 4, last CPU#0: #0: d8f0000027bdea88 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x150/0x41c mm/mmap_lock.c:310 #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: do_fault_around mm/memory.c:5957 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: do_read_fault mm/memory.c:5991 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: do_fault mm/memory.c:6134 [inline] #1: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: do_pte_missing+0xcac/0x38cc mm/memory.c:4700 #2: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffff800087fce618 (rcu_read_lock){....}-{1:3}, at: filemap_map_pages+0x154/0x2478 mm/filemap.c:3921 #3: fff0000074cccea0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:677 [inline] #3: fff0000074cccea0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1678 [inline] #3: fff0000074cccea0 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:2016 [inline] #3: fff0000074cccea0 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x364/0x38cc kernel/sched/core.c:7151 =============================================