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Bug #3947
closedkrbd: read zeroing freed bio?
% Done:
0%
Source:
Development
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Backport:
Regression:
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
This happened to me once before but I wasn't sure what
I did. Now I think I do know. This is with the new
request code.
I tried mapping an image and then reading from it. In
zero_bio_chain() called from rbd_osd_read_callback()
it seems to be hitting uninitialized (or freed) memory.
Now while I'm trying to write this up I think I know
the problem. It looks like the object being read is
"image.rbd" and that's a page I/O, not a bio-based I/O.
Good news everyone!
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