"Read attempted past buffer limit" error while reindexing #6492

issue laanwj opened this issue on July 29, 2015

laanwj commented at 6:23 PM on July 29, 2015: member
It is possible that this is caused by local corruption, although this is not a system that is known to corrupt data:
```
2015-07-29 18:13:35 Reindexing block file blk00201.dat...
2015-07-29 18:13:38 LoadExternalBlockFile: Deserialize or I/O error - Read attempted past buffer limitReindexing block file blk00202.dat...
```
At the least the fatal error should probably cancel the reindexing process (and be terminated with a newline).

I'll try running the troubleshooting tool on the block files and db tomorrow.
laanwj added the label Bug on Jul 29, 2015

laanwj commented at 2:32 PM on July 31, 2015: member

It shows two overlapping blocks:

01400bb0-0142dd55 01400bb8 0000000000000000007a68c90b1926ff42418c73d7862dd8ac157ecc107105e5 332363 
01427437-01449430 0142743f 00000000000000000e1fc013481b1d4c700f856d90efaa4982675a728eb9fb32 332197 Overlap with last block (01400bb0,0142dd55)
01449430-014c6a68 01449438 000000000000000013c7ec167fb6346ea04bff43a2679abf9566df0773a92b36 332198

This is quite an old blocks directory so it's possible that this happened due to the reindex issue solved by #5864.

laanwj closed this on Jul 31, 2015
laanwj referenced this in commit 5d7fc47cf6 on Jul 31, 2015
laanwj cross-referenced this on Jul 31, 2015 from issue Make sure LogPrintf strings are line-terminated by laanwj
laanwj referenced this in commit f18b8ec7cf on Aug 3, 2015
luke-jr referenced this in commit abbb3bf75d on Sep 20, 2015
luke-jr referenced this in commit ac9cb8e950 on Sep 20, 2015
luke-jr referenced this in commit bc59522175 on Sep 21, 2015
luke-jr referenced this in commit 7ff9d122e4 on Sep 22, 2015
prairiefalcon cross-referenced this on Mar 7, 2021 from issue Reindex subtly corrupts blknnnnn.dat files and causes subsequent deserialization errors by prairiefalcon
bitcoin locked this on Sep 8, 2021

Contributors

laanwj

Labels

Bug

Linked (view graph)

#5864 fix possible block db breakage during re-index #6497 Make sure LogPrintf strings are line-terminated #21379 Reindex subtly corrupts blknnnnn.dat files and causes subsequent deserialization errors