buffer layer error at fs/buffer.c:395
Pass this trace through ksymoops for reporting
Call Trace: [__buffer_error+51/56]  [__find_get_block_slow+126/176]  [unmap_underlying_metadata+18/72]  [__block_prepare_write+374/
1056]  [__block_commit_write+114/156]  [block_prepare_write+33/56]  [ext2_get_bl
ock+0/744]  [ext2_prepare_write+25/32]  [ext2_get_block+0/744]  [generic_file_ai
o_write_nolock+1527/2536]  [generic_commit_write+51/92]  [unlock_page+10/60]  [g
eneric_file_write_nolock+111/140]  [do_lookup+24/148]  [link_path_walk+1499/1884
]  [permission+43/56]  [may_open+99/376]  [open_namei+672/944]  [generic_file_wr
ite+72/96]  [vfs_write+165/268]  [sys_write+42/60]  [syscall_call+7/11] 
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