INFO: task syz-executor.1:3743 can't die for more than 143 seconds.
task:syz-executor.1  state:D stack:27792 pid: 3743 ppid:  3631 flags:0x00004004
Call Trace:
 <TASK>
 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
 irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:313
 exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1543
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f956e9460d0
RSP: 002b:00007ffd27767680 EFLAGS: 00010246
RAX: 000000004135a78c RBX: 00007f956eaaaff8 RCX: 0000001b2e520000
RDX: 0000000000000000 RSI: 0000001b2e520014 RDI: 0000000000000022
RBP: 000000004135a78c R08: 000000000000078c R09: 000000004135a790
R10: 00007ffd27767850 R11: 0000000000000246 R12: 00007f956ea9f000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff819ceee6
 </TASK>

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 klogd/2962:
2 locks held by getty/3284:
 #0: ffff88814a9cb098 (&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

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