Bug #62492: libcephsqlite: short reads fill 0s at beginning of buffer - cephsqlite - Ceph

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Bug #62492

closed

libcephsqlite: short reads fill 0s at beginning of buffer

Added by Patrick Donnelly 9 months ago. Updated 6 months ago.

Status:

Resolved

Priority:

Immediate

Assignee:

Patrick Donnelly

Target version:

Ceph - v19.0.0

% Done:

Source:

Development

Tags:

backport_processed

Backport:

reef,quincy,pacific

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

53053

Crash signature (v1):

Crash signature (v2):

Description

"If xRead() returns SQLITE_IOERR_SHORT_READ it must also fill in the unread portions of the buffer with zeros. A VFS that fails to zero-fill short reads might seem to work. However, failure to zero-fill short reads will eventually lead to database corruption. "

https://www.sqlite.org/c3ref/io_methods.html

https://github.com/ceph/ceph/blob/dd5f8e078fe1235d25c9aca356bdd3eb2a9ed6b4/src/libcephsqlite.cc#L356

Related issues 3 (0 open — 3 closed)