Comment 5 for bug 934377

Seen in Percona-Server-5.5.28-rel29.1-359.Linux.x86_64

121204 10:02:19 InnoDB: Assertion failure in thread 320534848 in file buf0flu.c line 542
InnoDB: Failing assertion: (buf_pool->flush_list).count > 0

+thread 24
[Switching to thread 24 (LWP 18474)]
#0 0x00000038e260bd72 in pthread_kill () from /lib64/libpthread.so.0
(gdb) bt
+bt
#0 0x00000038e260bd72 in pthread_kill () from /lib64/libpthread.so.0
#1 0x0000000000695e23 in handle_fatal_signal (sig=6) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/sql/signal_h
andler.cc:249
#2 <signal handler called>
#3 0x00000038e1630285 in raise () from /lib64/libc.so.6
#4 0x00000038e1631d30 in abort () from /lib64/libc.so.6
#5 0x000000000087bf6c in buf_flush_remove (bpage=0x6282940) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/stora
ge/innobase/buf/buf0flu.c:542
#6 0x000000000087bfad in buf_flush_write_complete (bpage=0x4814) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/
storage/innobase/buf/buf0flu.c:655
#7 0x00000000008794a4 in buf_page_io_complete (bpage=0x6282940) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/s
torage/innobase/buf/buf0buf.c:4158
#8 0x00000000008b1f88 in fil_aio_wait (segment=6) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/storage/innobas
e/fil/fil0fil.c:5587
#9 0x00000000008286e0 in io_handler_thread (arg=<optimized out>) at /home/jenkins/workspace/percona-server-5.5-nigthly-binaries/label_exp/centos5-64/Percona-Server-5.5.28-rel29.1/
storage/innobase/srv/srv0start.c:485
#10 0x00000038e260677d in start_thread () from /lib64/libpthread.so.0
#11 0x00000038e16d3c1d in clone () from /lib64/libc.so.6
#12 0x0000000000000000 in ?? ()