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Bug #12775
closedcommon: do not insert emtpy ptr when rebuild emtpy bufferlist
Status:
Resolved
Priority:
Urgent
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Community (dev)
Tags:
Backport:
hammer
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
when bufferlist len is 0, rebuild would new a prt with len 0 and insert into bufferlist.
The follow test case would assert.
bufferlist bl;
char t1[] = "X";
bufferlist a2;
a2.append(t1, 1);
bl.rebuild(); // this would insert new ptr with len 0
bl.append(a2);
bufferlist::iterator p = bl.begin();
char dst1;
p.copy(1, dst); // assert
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