INFO: task syz-executor.5:19640 can't die for more than 143 seconds.
task:syz-executor.5  state:D stack:25792 pid:19640 ppid:  2465 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
 try_charge_memcg+0x298/0x10f0 mm/memcontrol.c:2598
 try_charge mm/memcontrol.c:2723 [inline]
 mem_cgroup_charge_skmem+0x7d/0x1d0 mm/memcontrol.c:7027
 sock_reserve_memory net/core/sock.c:988 [inline]
 sock_setsockopt+0x22fa/0x2ce0 net/core/sock.c:1444
 __sys_setsockopt+0x4f8/0x610 net/socket.c:2172
 __do_sys_setsockopt net/socket.c:2187 [inline]
 __se_sys_setsockopt net/socket.c:2184 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2184
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7faadcfcce99
RSP: 002b:00007faadb942168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007faadd0dff60 RCX: 00007faadcfcce99
RDX: 0000000000000049 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007faadd027031 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0f666d7f R14: 00007faadb942300 R15: 0000000000022000
 </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
4 locks held by kworker/u4:5/1038:
no locks held by klogd/2963.
2 locks held by getty/3281:
 #0: ffff88814a797098 (&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
1 lock held by syz-executor.5/19640:
 #0: ffff88814a67bfb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1675 [inline]
 #0: ffff88814a67bfb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: sock_setsockopt+0x1e3/0x2ce0 net/core/sock.c:1041

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