[ 2115.359650] -(1)[106:kswapd0]=================================
[ 2115.359665] -(1)[106:kswapd0][ INFO: inconsistent lock state ]
[ 2115.359684] -(1)[106:kswapd0]4.9.60+ #2 Tainted: G        W  O
[ 2115.359699] -(1)[106:kswapd0]---------------------------------
[ 2115.359715] -(1)[106:kswapd0]inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage.
[ 2115.359732] -(1)[106:kswapd0]kswapd0/106 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 2115.359748] (&sb->s_type->i_mutex_key#9){++++?+}, at: [<ffffff9008470644>] shmem_fallocate+0x104/0x880
[ 2115.359809] -(1)[106:kswapd0]{RECLAIM_FS-ON-W} state was registered at:
[ 2115.359828] -(1)[106:kswapd0]  mark_lock+0x2a4/0x10c0
[ 2115.359845] -(1)[106:kswapd0]  mark_held_locks+0xc0/0x128
[ 2115.359862] -(1)[106:kswapd0]  lockdep_trace_alloc+0x284/0x368
[ 2115.359881] -(1)[106:kswapd0]  kmem_cache_alloc+0x3c/0x368
[ 2115.359900] -(1)[106:kswapd0]  __d_alloc+0x3c/0x7a8
[ 2115.359917] -(1)[106:kswapd0]  d_alloc+0x34/0x140
[ 2115.359934] -(1)[106:kswapd0]  d_alloc_parallel+0xfc/0x1480
[ 2115.359953] -(1)[106:kswapd0]  lookup_open+0x3c4/0x12a8
[ 2115.359971] -(1)[106:kswapd0]  path_openat+0xb40/0x1dc0
[ 2115.359987] -(1)[106:kswapd0]  do_filp_open+0x170/0x258
[ 2115.360006] -(1)[106:kswapd0]  do_sys_open+0x1b8/0x2f0
[ 2115.360023] -(1)[106:kswapd0]  SyS_openat+0x10/0x18
[ 2115.360041] -(1)[106:kswapd0]  el0_svc_naked+0x24/0x28
[ 2115.360056] -(1)[106:kswapd0]irq event stamp: 2437365
[ 2115.360079] -(1)[106:kswapd0]hardirqs last  enabled at (2437365): [<ffffff900a0ec6ec>] mutex_trylock+0x224/0x460
[ 2115.360098] -(1)[106:kswapd0]hardirqs last disabled at (2437364): [<ffffff900a0ec5b0>] mutex_trylock+0xe8/0x460
[ 2115.360116] -(1)[106:kswapd0]softirqs last  enabled at (2436534): [<ffffff90080822a0>] __do_softirq+0xc38/0x1190
[ 2115.360138] -(1)[106:kswapd0]softirqs last disabled at (2436515): [<ffffff90080de05c>] irq_exit+0x1ac/0x228
[ 2115.360153] -(1)[106:kswapd0]\x0aother info that might help us debug this:
[ 2115.360169] -(1)[106:kswapd0] Possible unsafe locking scenario:\x0a
[ 2115.360184] -(1)[106:kswapd0]       CPU0
[ 2115.360198] -(1)[106:kswapd0]       ----
[ 2115.360211] -(1)[106:kswapd0]  lock(&sb->s_type->i_mutex_key#9);
[ 2115.360252] -(1)[106:kswapd0]  <Interrupt>
[ 2115.360265] -(1)[106:kswapd0]    lock(&sb->s_type->i_mutex_key#9);
[ 2115.360304] -(1)[106:kswapd0]\x0a *** DEADLOCK ***\x0a
[ 2115.360322] -(1)[106:kswapd0] #0:  (shrinker_rwsem){++++..}, at: [<ffffff9008459e08>] shrink_slab.part.15.constprop.28+0xb0/0xe10
[ 2115.360382] -(1)[106:kswapd0] #1:  (ashmem_mutex){+.+.+.}, at: [<ffffff90098c4ba0>] ashmem_shrink_scan+0x80/0x308
[ 2115.360439] -(1)[106:kswapd0]\x0astack backtrace:
[ 2115.360462] -(1)[106:kswapd0]CPU: 1 PID: 106 Comm: kswapd0 Tainted: G        W  O    4.9.60+ #2
[ 2115.360478] -(1)[106:kswapd0]Hardware name: MT6765 (DT)
[ 2115.360494] -(1)[106:kswapd0]Call trace:
[ 2115.360515] -(1)[106:kswapd0][<ffffff9008092938>] dump_backtrace+0x0/0x400
[ 2115.360533] -(1)[106:kswapd0][<ffffff900809302c>] show_stack+0x14/0x20
[ 2115.360555] -(1)[106:kswapd0][<ffffff9008988bc0>] dump_stack+0xb0/0xe8
[ 2115.360576] -(1)[106:kswapd0][<ffffff900841e8b0>] print_usage_bug.part.24+0x548/0x568
[ 2115.360595] -(1)[106:kswapd0][<ffffff90082398bc>] mark_lock+0x494/0x10c0
[ 2115.360613] -(1)[106:kswapd0][<ffffff900823bf1c>] __lock_acquire+0xc94/0x58e8
[ 2115.360630] -(1)[106:kswapd0][<ffffff9008241ba0>] lock_acquire+0x1d0/0x708
[ 2115.360650] -(1)[106:kswapd0][<ffffff900a0f27a8>] down_write+0x48/0xd0
[ 2115.360669] -(1)[106:kswapd0][<ffffff9008470644>] shmem_fallocate+0x104/0x880
[ 2115.360688] -(1)[106:kswapd0][<ffffff90098c4cc4>] ashmem_shrink_scan+0x1a4/0x308
[ 2115.360709] -(1)[106:kswapd0][<ffffff900845a088>] shrink_slab.part.15.constprop.28+0x330/0xe10
[ 2115.360729] -(1)[106:kswapd0][<ffffff9008463b34>] shrink_node+0x1b4/0x588
[ 2115.360747] -(1)[106:kswapd0][<ffffff90084655f4>] kswapd+0x774/0x1640
[ 2115.360767] -(1)[106:kswapd0][<ffffff9008128a4c>] kthread+0x28c/0x310
[ 2115.360786] -(1)[106:kswapd0][<ffffff9008083f00>] ret_from_fork+0x10/0x50