Created attachment 1155149 [details]
Crash

Description of problem:
While larger object size, seeing a crash

Version-Release number of selected component (if applicable):
10.0.2.1

How reproducible:
Always

Steps to Reproduce:
1. Create a RBD Image enabling all the features.
rbd image 'testing3':
        size 102400 MB in 25600 objects
        order 22 (4096 kB objects)
        block_name_prefix: rbd_data.128b238e1f29
        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten, journaling
        flags: 
        journal: 128b238e1f29
        mirroring state: disabled

2. Write ~90M of data (PFA the script)
3. Seeing a crash

Actual results:
There should not be any crash

Expected results:
Seeing a crash

Additional info:
Log attached.

<rados.Ioctx object at 0x7f1ae13a3520>
107374182400
99429910
librbd/AioCompletion.cc: In function 'void librbd::AioCompletion::fail(CephContext*, int)' thread 7f1aba364700 time 2016-05-08 19:02:46.422238
librbd/AioCompletion.cc: 142: FAILED assert(pending_count == 0)
 ceph version 10.2.0-1.el7cp (3a9fba20ec743699b69bd0181dd6c54dc01c64b9)
 1: (()+0x2765b5) [0x7f1ad043d5b5]
 2: (()+0x749b7) [0x7f1ad023b9b7]
 3: (()+0xe8253) [0x7f1ad02af253]
 4: (()+0x721f9) [0x7f1ad02391f9]
 5: (()+0xa2ac4) [0x7f1ad0269ac4]
 6: (()+0x26713e) [0x7f1ad042e13e]
 7: (()+0x268010) [0x7f1ad042f010]
 8: (()+0x7dc5) [0x7f1ae0d10dc5]
 9: (clone()+0x6d) [0x7f1ae033528d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.