[17055.104277] ------------[ cut here ]------------
[17055.104354] WARNING: CPU: 0 PID: 2164 at fs/f2fs/segment.c:718 update_sit_entry+0x220/0x264()
[17055.104370] Modules linked in: arc4 ecb md4 md5 hmac nls_utf8 cifs bnep bluetooth cfg80211 rfkill pl2303 usbserial snd_bcm2835 snd_pcm snd_timer snd i2c_bcm2708 bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
[17055.104491] CPU: 0 PID: 2164 Comm: kworker/u2:2 Not tainted 4.4.35+ #931
[17055.104506] Hardware name: BCM2708
[17055.104543] Workqueue: writeback wb_workfn (flush-179:0)
[17055.104611] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
[17055.104650] [<c0013c20>] (show_stack) from [<c02e43bc>] (dump_stack+0x20/0x28)
[17055.104688] [<c02e43bc>] (dump_stack) from [<c0021ef4>] (warn_slowpath_common+0x8c/0xc4)
[17055.104718] [<c0021ef4>] (warn_slowpath_common) from [<c0021fe8>] (warn_slowpath_null+0x2c/0x34)
[17055.104749] [<c0021fe8>] (warn_slowpath_null) from [<c0284d88>] (update_sit_entry+0x220/0x264)
[17055.104783] [<c0284d88>] (update_sit_entry) from [<c02862f4>] (refresh_sit_entry+0x70/0xc8)
[17055.104813] [<c02862f4>] (refresh_sit_entry) from [<c0287440>] (allocate_data_block+0x200/0x340)
[17055.104841] [<c0287440>] (allocate_data_block) from [<c0287750>] (do_write_page+0x1d0/0x2a4)
[17055.104867] [<c0287750>] (do_write_page) from [<c02878ec>] (write_node_page+0x50/0x58)
[17055.104897] [<c02878ec>] (write_node_page) from [<c027fc14>] (f2fs_write_node_page+0x11c/0x2a4)
[17055.104925] [<c027fc14>] (f2fs_write_node_page) from [<c0281c00>] (sync_node_pages+0x3e4/0x5cc)
[17055.104951] [<c0281c00>] (sync_node_pages) from [<c027737c>] (write_checkpoint+0x1c0/0xe40)
[17055.104993] [<c027737c>] (write_checkpoint) from [<c0271578>] (f2fs_sync_fs+0x6c/0xd0)
[17055.105025] [<c0271578>] (f2fs_sync_fs) from [<c0285d30>] (f2fs_balance_fs_bg+0x88/0xf4)
[17055.105054] [<c0285d30>] (f2fs_balance_fs_bg) from [<c0281e18>] (f2fs_write_node_pages+0x30/0x108)
[17055.105085] [<c0281e18>] (f2fs_write_node_pages) from [<c00e62e8>] (do_writepages+0x34/0x48)
[17055.105118] [<c00e62e8>] (do_writepages) from [<c0157390>] (__writeback_single_inode+0x40/0x2ac)
[17055.105152] [<c0157390>] (__writeback_single_inode) from [<c0157a78>] (writeback_sb_inodes+0x1bc/0x3d8)
[17055.105182] [<c0157a78>] (writeback_sb_inodes) from [<c0157d20>] (__writeback_inodes_wb+0x8c/0xd0)
[17055.105209] [<c0157d20>] (__writeback_inodes_wb) from [<c0157f48>] (wb_writeback+0x1e4/0x258)
[17055.105236] [<c0157f48>] (wb_writeback) from [<c0158740>] (wb_workfn+0x320/0x43c)
[17055.105266] [<c0158740>] (wb_workfn) from [<c00376a4>] (process_one_work+0x11c/0x39c)
[17055.105294] [<c00376a4>] (process_one_work) from [<c0037964>] (worker_thread+0x40/0x4d0)
[17055.105328] [<c0037964>] (worker_thread) from [<c003d2e8>] (kthread+0xdc/0xf8)
[17055.105362] [<c003d2e8>] (kthread) from [<c000f8a8>] (ret_from_fork+0x14/0x2c)
[17055.105379] ---[ end trace e82d0dd03e6937e9 ]---
[17055.105452] ------------[ cut here ]------------