Comment 0 for bug 1448758

From a user of my program I have been submitted a database created by sqlite3 3.8.2-1ubuntu2 64bit in Trusty 14.04 that will also crash sqlite3. The error message varies a bit. Here is a selection of them:

*** Error in `sqlite3': malloc(): memory corruption: 0x00007f913a81fb60 ***
---
sqlite3: malloc.c:2372: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 *(sizeof(size_t))) - 1)) & ~((2 *(sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long) old_end & pagemask) == 0)' failed.
---
*** Error in `sqlite3': free(): invalid pointer: 0x00007f418d724150 ***
---
*** Error in `sqlite3': double free or corruption (out): 0x00007fa10c80e570 ***

The crash is easy to reproduce as it happens straight away when querying a specific table. The database works fine with the 32 bit version of 3.8.2, and it also works if I run it with the 64 bit version in Vivid, so I don't think it is corrupt. I can send you the database if you provide an email to send it to.

Here is what Valgrind has to say about it:

sqlite> select count(id) from files;
==4839== Invalid write of size 8
==4839== at 0x4E6FDCF: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E6FE01: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E6FE01: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E6FE01: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E6FE01: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E700D4: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E87264: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E8BB65: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E9E6FC: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA13EE: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA1A21: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA1CD4: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== Address 0x5dd58d8 is 0 bytes after a block of size 1,016 alloc'd
==4839== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==4839== by 0x4E6ACF6: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E45559: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E4DC37: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E4DD55: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E4DD8C: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E8681C: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E8BB65: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4E9E6FC: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA13EE: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA1A21: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839== by 0x4EA1CD4: ??? (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==4839==