[lttng-dev] Getting SIGBUS in babeltrace - occasionally

Amit Margalit AMITM at il.ibm.com
Wed Jul 24 05:09:21 EDT 2013


I am getting occasional SIGBUS inside _aligned_integer_read() in 

Here is the backtrace, maybe someone could take a look and suggest 
#0  _aligned_integer_read (definition=0x954320, ppos=0x106e028) at 
#1  ctf_integer_read (ppos=0x106e028, definition=0x954320) at 
#2  0x00007ffff070e36e in generic_rw (definition=<optimized out>, 
pos=0x106e028) at ../include/babeltrace/types.h:133
#3  bt_struct_rw (ppos=0x106e028, definition=0x9542e0) at struct.c:56
#4  0x00007ffff13f7fda in generic_rw (definition=<optimized out>, 
pos=0x106e028) at ../../include/babeltrace/types.h:133
#5  ctf_packet_seek (stream_pos=0x106e028, index=<optimized out>, 
whence=<optimized out>) at ctf.c:860
#6  0x00007ffff070a3f1 in seek_file_stream_by_timestamp 
(cfs=cfs at entry=0x106cf90, timestamp=timestamp at entry=1374636821498972926) 
at iterator.c:141
#7  0x00007ffff070aa96 in seek_ctf_trace_by_timestamp 
(stream_heap=0x176d310, timestamp=1374636821498972926, tin=<optimized 
out>) at iterator.c:188
#8  bt_iter_set_pos (iter=iter at entry=0xfdafa0, iter_pos=0x2bf59f0) at 
#9  0x00007ffff1624f01 in _wrap__bt_iter_set_pos (self=<optimized out>, 
args=<optimized out>) at babeltrace_wrap.c:3805
#10 0x00007ffff7b28c0c in call_function (oparg=<optimized out>, 
pp_stack=<optimized out>) at Python/ceval.c:3679
#11 PyEval_EvalFrameEx (f=0x1c243c0, throwflag=<optimized out>) at 
#12 0x00007ffff7b2e0d2 in PyEval_EvalCodeEx (co=0xa8e5d0, 
globals=<optimized out>, locals=<optimized out>, args=0x2088cc8, 
argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0)
    at Python/ceval.c:2942

Any suggestions are welcome.

Amit Margalit
IBM XIV - Storage Reinvented
XIV-NAS Development Team
Tel. 03-689-7774
Fax. 03-689-7230
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