INFO: task syz-executor.1:3783 can't die for more than 143 seconds. task:syz-executor.1 state:D stack:27520 pid: 3783 ppid: 3686 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4d90 kernel/sched/core.c:6296 schedule+0xd2/0x260 kernel/sched/core.c:6369 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 reclaim_throttle+0x1ce/0x5e0 mm/vmscan.c:1072 consider_reclaim_throttle mm/vmscan.c:3399 [inline] shrink_zones mm/vmscan.c:3486 [inline] do_try_to_free_pages+0x7cd/0x1620 mm/vmscan.c:3541 try_to_free_mem_cgroup_pages+0x2cd/0x840 mm/vmscan.c:3855 reclaim_high.constprop.0+0x190/0x250 mm/memcontrol.c:2299 mem_cgroup_handle_over_high+0x18c/0x540 mm/memcontrol.c:2483 tracehook_notify_resume include/linux/tracehook.h:198 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x1ab/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f74d469afa7 RSP: 002b:00007ffe06aa0e58 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: 0000000000000000 RBX: 0000000000021000 RCX: 00007f74d469afa7 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f74d3dd0000 RBP: 00007ffe06aa0f30 R08: 00000000ffffffff R09: 00007f74d3def700 R10: 0000000000020022 R11: 0000000000000206 R12: 00007ffe06aa1050 R13: 00007f74d3def700 R14: 0000000000000000 R15: 0000000000022000 INFO: task syz-executor.1:3784 can't die for more than 143 seconds. task:syz-executor.1 state:D stack:27528 pid: 3784 ppid: 3686 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4d90 kernel/sched/core.c:6296 schedule+0xd2/0x260 kernel/sched/core.c:6369 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 reclaim_throttle+0x1ce/0x5e0 mm/vmscan.c:1072 consider_reclaim_throttle mm/vmscan.c:3399 [inline] shrink_zones mm/vmscan.c:3486 [inline] do_try_to_free_pages+0x7cd/0x1620 mm/vmscan.c:3541 try_to_free_mem_cgroup_pages+0x2cd/0x840 mm/vmscan.c:3855 reclaim_high.constprop.0+0x190/0x250 mm/memcontrol.c:2299 mem_cgroup_handle_over_high+0x18c/0x540 mm/memcontrol.c:2483 tracehook_notify_resume include/linux/tracehook.h:198 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x1ab/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f74d469ae99 RSP: 002b:00007f74d3e10168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: 0000000000000000 RBX: 00007f74d47adf60 RCX: 00007f74d469ae99 RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f74d46f5031 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe06aa0ebf R14: 00007f74d3e10300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/26: #0: ffffffff8bb818a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 4 locks held by kworker/0:3/1151: #0: ffff8880b9c39c98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489 #1: ffff8880b9c27988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:891 #2: ffff8880b9c284d8 (&base->lock){..-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946 #3: ffffffff906ab590 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661 1 lock held by klogd/2962: 2 locks held by getty/3288: #0: ffff88807f1d2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077 =============================================