We are developing project on Android 9 which used kernel 4.14.133
version.
And while normal using device, we have a issue device freezing and
reboot after few minute.
I checked the log and saw kernel hung on filesystem as below:

10-02 20:34:17.585  2461  2461 I Kernel  : [15159.873020] sysrq: SysRq : Show Blocked State
10-02 20:34:17.586  2461  2461 I Kernel  : [15159.873071]   task                        PC stack   pid father
10-02 20:34:17.586  2461  2461 I Kernel  : [15159.873148] jbd2/xvda3-8    D    0  2085      2 0x00000020
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873157] Call trace:
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873177] [<000000005e1d80e5>] __switch_to+0x94/0xd8
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873186] [<00000000a85c7184>] __schedule+0x274/0x940
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873190] [<00000000c9c2c8f0>] schedule+0x40/0xa8
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873197] [<00000000a97520e1>] io_schedule+0x20/0x40
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873206] [<000000001d0a54c7>] wait_on_page_bit+0x144/0x218
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873210] [<00000000a2541efa>] __filemap_fdatawait_range+0xd4/0x150
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873213] [<0000000035aea854>] filemap_fdatawait_keep_errors+0x28/0x58
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873223] [<0000000084ab312f>] jbd2_journal_commit_transaction+0x6bc/0x1838
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873228] [<000000007e52cd07>] kjournald2+0xd8/0x268
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873234] [<00000000f46ec2f2>] kthread+0x138/0x140
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873238] [<000000009e914ea4>] ret_from_fork+0x10/0x1c
10-02 20:34:17.586  2461  2461 I Kernel  : [15159.873274] HwBinder:2156_3 D    0  4116      1 0x00000000
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873279] Call trace:
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873282] [<000000005e1d80e5>] __switch_to+0x94/0xd8
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873286] [<00000000a85c7184>] __schedule+0x274/0x940
10-02 20:34:17.586  2461  2461 W Kernel  : [15159.873288] [<00000000c9c2c8f0>] schedule+0x40/0xa8
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873292] [<00000000228469bd>] schedule_timeout+0x204/0x430
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873295] [<000000006c4e1588>] wait_for_common+0xbc/0x178
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873298] [<0000000085ed017c>] wait_for_completion+0x28/0x38
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873303] [<00000000ce130c93>] flush_work+0x134/0x220
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873309] [<00000000cd75762d>] drm_mode_rmfb+0x130/0x1a8
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873317] [<000000002c2f9c43>] drm_ioctl_kernel+0x70/0xd0
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873320] [<000000005902551e>] drm_ioctl+0x1e4/0x450
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873327] [<00000000d4238d57>] do_vfs_ioctl+0xc4/0xb40
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873330] [<0000000003b80d06>] SyS_ioctl+0x8c/0xa8
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873334] Exception stack(0xffff00000fc13ec0 to 0xffff00000fc14000)
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873340] 3ec0: 0000000000000003 00000000c00464af 0000fe8cb41ee684 0000000000000001
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873344] 3ee0: 000000000000002c 0000fe8cb4c630c0 000000090000001e 0000000007800000
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873348] 3f00: 000000000000001d 0000fe8cb41ee5f8 0000fe8cb41ee5f8 0000fe8cb41ee640
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873352] 3f20: 000000000000000c 0000000000000001 0000000000000000 fffffffffffffff0
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873356] 3f40: 0000fe8cb5c6fd90 0000fe8cb51e90e0 0000fe8cb4c630c0 0000fe8cb41ef588
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873360] 3f60: 00000000c00464af 0000000000000003 0000fe8cb4446960 0000fe8cb41ee89c
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873364] 3f80: 0000c04ee2bd66c5 0000c04ee2bd74f3 00000000000000ff 00000000ffffffff
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873368] 3fa0: 0000fe8cb4c2b540 0000fe8cb41ee630 0000fe8cb51e916c 0000fe8cb41ee540
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873372] 3fc0: 0000fe8cb522f758 00000000a0000000 0000000000000003 000000000000001d
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873376] 3fe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
10-02 20:34:17.587  2461  2461 W Kernel  : [15159.873381] [<000000008094bac4>] el0_svc_naked+0x34/0x38
10-02 20:34:17.588  2461  2461 I Kernel  : [15159.873452] PackageManager  D    0  2657   2121 0x00000009
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873457] Call trace:
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873461] [<000000005e1d80e5>] __switch_to+0x94/0xd8
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873464] [<00000000a85c7184>] __schedule+0x274/0x940
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873467] [<00000000c9c2c8f0>] schedule+0x40/0xa8
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873472] [<00000000d3740507>] jbd2_log_wait_commit+0xc0/0x158
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873477] [<0000000036159c5c>] jbd2_complete_transaction+0x90/0xc0
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873483] [<0000000019ee473a>] ext4_sync_file+0x440/0x488
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873490] [<00000000665d0f69>] vfs_fsync_range+0x64/0xc0
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873493] [<0000000035c0b348>] do_fsync+0x48/0x88
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873496] [<000000006f18433e>] SyS_fsync+0x24/0x38
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873499] Exception stack(0xffff00000b01bec0 to 0xffff00000b01c000)
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873503] bec0: 00000000000000fb 0000e6a41540bb64 000000006f4c7d34 0000000000000000
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873507] bee0: 00000000137c08e4 000000000000216e 0000216e0000216e 000000000000216e
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873511] bf00: 0000000000000052 d4d524bf9be44442 0000000000430000 0000e6a42f7e0688
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873515] bf20: 0000000077ef52e8 0000000000000000 000000006f71f9d8 0000000000003f0d
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873519] bf40: 0000e6a429b23e30 0000e6a4b1eb2c00 0000000077ef52e8 00000000000000fb
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873523] bf60: 00000000ffffffff 00000000137c08d0 0000000000e60ce4 0000000000e60ce4
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873527] bf80: 00000000137c01e8 00000000137c03a8 00000000137c0850 00000000137c08e0
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873531] bfa0: 00000000137c2908 0000e6a41540bb20 0000e6a429b076b4 0000e6a41540bb10
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873535] bfc0: 0000e6a4b1eb2c08 0000000060000000 00000000000000fb 0000000000000052
10-02 20:34:17.588  2461  2461 W Kernel  : [15159.873539] bfe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873542] [<000000008094bac4>] el0_svc_naked+0x34/0x38
10-02 20:34:17.589  2461  2461 I Kernel  : [15159.873869] Thread-52       D    0  4475   2121 0x00000008
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873874] Call trace:
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873878] [<000000005e1d80e5>] __switch_to+0x94/0xd8
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873882] [<00000000a85c7184>] __schedule+0x274/0x940
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873885] [<00000000c9c2c8f0>] schedule+0x40/0xa8
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873889] [<00000000d3740507>] jbd2_log_wait_commit+0xc0/0x158
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873892] [<0000000036159c5c>] jbd2_complete_transaction+0x90/0xc0
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873896] [<0000000019ee473a>] ext4_sync_file+0x440/0x488
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873901] [<00000000665d0f69>] vfs_fsync_range+0x64/0xc0
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873903] [<0000000035c0b348>] do_fsync+0x48/0x88
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873906] [<000000006f18433e>] SyS_fsync+0x24/0x38
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873909] Exception stack(0xffff00002228bec0 to 0xffff00002228c000)
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873913] bec0: 000000000000001e 0000e6a404184824 000000006f4c7d34 0000000077f8f00c
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873918] bee0: 0000000000000002 00000000000000a9 0000e6a4b5237000 0000000000729bee
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873922] bf00: 0000000000000052 d4d524bf9be44442 0000000000430000 0000e6a42f7e0688
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873926] bf20: 0000000000000018 00000003e8000000 002e5f5680000000 0000474a00000000
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873930] bf40: 0000e6a429b23e30 0000e6a4b1eb2c00 0000000077f7e15e 000000000000001e
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873934] bf60: 00000000ffffffff 0000000013049b60 0000000013207c88 0000000013049ae0
10-02 20:34:17.589  2461  2461 W Kernel  : [15159.873938] bf80: 00000000000001b4 00000000000001b0 0000000013207d30 0000018af09743e6
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.873942] bfa0: 0000e6a42f70ac23 0000e6a4041847e0 0000e6a429b076b4 0000e6a4041847d0
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.873946] bfc0: 0000e6a4b1eb2c08 0000000060000000 000000000000001e 0000000000000052
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.873950] bfe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.873952] [<000000008094bac4>] el0_svc_naked+0x34/0x38
10-02 20:34:17.590  2461  2461 I Kernel  : [15159.874135] kworker/u12:3   D    0  9578      2 0x00000020
10-02 20:34:17.590  2461  2461 I Kernel  : [15159.874149] Workqueue: writeback wb_workfn (flush-202:3)
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874154] Call trace:
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874157] [<000000005e1d80e5>] __switch_to+0x94/0xd8
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874161] [<00000000a85c7184>] __schedule+0x274/0x940
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874163] [<00000000c9c2c8f0>] schedule+0x40/0xa8
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874167] [<00000000a97520e1>] io_schedule+0x20/0x40
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874175] [<000000008d5c36d0>] blk_mq_get_tag+0x194/0x340
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874178] [<00000000f97393cb>] blk_mq_get_request+0x164/0x3b0
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874181] [<00000000e69c8e58>] blk_mq_make_request+0xc8/0x6f8
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874187] [<00000000e88e7453>] generic_make_request+0xf4/0x288
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874190] [<0000000016cf2add>] submit_bio+0x5c/0x1d0
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874196] [<0000000097be4708>] ext4_io_submit+0x54/0x68
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874199] [<00000000e9c80f00>] ext4_bio_write_page+0x1b0/0x528
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874202] [<000000009bf94bad>] mpage_submit_page+0x60/0x90
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874205] [<00000000da1a9585>] mpage_map_and_submit_buffers+0x138/0x238
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874208] [<00000000c84c3e14>] ext4_writepages+0x8dc/0xe08
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874214] [<000000007a345b10>] do_writepages+0x5c/0x108
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874217] [<00000000ef1a522d>] __writeback_single_inode+0x48/0x4f8
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874220] [<00000000aeac1ba5>] writeback_sb_inodes+0x1c0/0x470
10-02 20:34:17.590  2461  2461 W Kernel  : [15159.874223] [<00000000f7f818b4>] __writeback_inodes_wb+0x78/0xc8
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874225] [<00000000ae30bb56>] wb_writeback+0x24c/0x3d8
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874228] [<00000000b489a91f>] wb_workfn+0x1c4/0x490
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874233] [<000000004df896a9>] process_one_work+0x1d8/0x498
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874236] [<00000000d7fa6dd7>] worker_thread+0x4c/0x478
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874240] [<00000000f46ec2f2>] kthread+0x138/0x140
10-02 20:34:17.591  2461  2461 W Kernel  : [15159.874243] [<000000009e914ea4>] ret_from_fork+0x10/0x1c


The issue happen one time, And I can't reproduce it

Thank you