INFO: task syz-executor.1:3636 can't die for more than 143 seconds.
task:syz-executor.1  state:D stack:23632 pid: 3636 ppid:     1 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
 obj_cgroup_charge_pages+0x1e/0x90 mm/memcontrol.c:3018
 obj_cgroup_charge+0xf3/0x280 mm/memcontrol.c:3287
 memcg_slab_pre_alloc_hook mm/slab.h:519 [inline]
 slab_pre_alloc_hook mm/slab.h:744 [inline]
 slab_alloc_node mm/slub.c:3145 [inline]
 slab_alloc mm/slub.c:3239 [inline]
 kmem_cache_alloc+0x92/0x3a0 mm/slub.c:3244
 __d_alloc+0x2a/0x950 fs/dcache.c:1769
 d_alloc+0x4a/0x230 fs/dcache.c:1848
 __lookup_hash+0xc8/0x180 fs/namei.c:1604
 filename_create+0x184/0x480 fs/namei.c:3705
 do_mkdirat+0x94/0x300 fs/namei.c:3948
 __do_sys_mkdir fs/namei.c:3979 [inline]
 __se_sys_mkdir fs/namei.c:3977 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3977
 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: 0033:0x7fe0b0a9afa7
RSP: 002b:00007ffc07494388 EFLAGS: 00000206 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffc07494410 RCX: 00007fe0b0a9afa7
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc07494410
RBP: 00007ffc074943ec R08: 0000000000000000 R09: 0000000000000005
R10: 00007ffc07494125 R11: 0000000000000206 R12: 0000000000000032
R13: 000000000008b49c R14: 0000000000000004 R15: 00007ffc07494450
 </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
1 lock held by syslogd/2955:
 #0: ffff8880b9c39c98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489
1 lock held by klogd/2962:
 #0: ffff8880b9c39c98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489
2 locks held by getty/3282:
 #0: ffff88814af50098 (&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
2 locks held by syz-executor.1/3636:
 #0: ffff88807f7da460 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0xf3/0x480 fs/namei.c:3699
 #1: ffff8880752ddda8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
 #1: ffff8880752ddda8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x158/0x480 fs/namei.c:3704
3 locks held by kworker/u4:15/6981:

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