INFO: task syz-executor.1:3692 can't die for more than 143 seconds. task:syz-executor.1 state:D stack:23712 pid: 3692 ppid: 1 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: 0033:0x7f8e2eda29d8 RSP: 002b:00007fff1e782200 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: 0000000000000003 RBX: 000000000000611f RCX: 00007f8e2eda29d8 RDX: 0000000000090800 RSI: 00007f8e2edfc216 RDI: 00000000ffffff9c RBP: 00007fff1e7822cc R08: 0000000000090800 R09: 00007f8e2edfc216 R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000 R13: 000000000012696e R14: 0000000000000009 R15: 00007fff1e782330 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb818a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by getty/3280: #0: ffff88802369d098 (&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 =============================================