Periodic crashes in bok

[kheimerl]

Potentially related to sdcch traffic, see matt's email.

[kheimerl]

(gdb) bt full
#0 0xb765245f in ?? ()
No symbol table info available.
#1 0xb3736940 in ?? ()
No symbol table info available.
#2 0x08324f3d in UnixSignal::Handler (this=0x843be80 ,
sig=sig@entry=11) at UnixSignal.cpp:68
buf = "core.openbts", '\000' <repeats 548 times>...
#3 0x083254e2 in _sigHandler (sig=11) at UnixSignal.cpp:49
FUNCTION = "_sigHandler"
#4
No symbol table info available.
#5 0x0831f96b in BitVector::peekField (this=this@entry=0xb3d00468,
readIndex=readIndex@entry=8, length=length@entry=8) at BitVector.cpp:65
i = 0
accum = 0
dp = 0x9 <error: Cannot access memory at address 0x9>
#6 0x081f2288 in GSM::L3Frame::MTI (this=0xb3d00468) at GSMTransfer.cpp:635
mti =
this = 0xb3d00468
#7 0x081f23f0 in GSM::L3Frame::text (this=this@entry=0xb3d00468, os=...)
at GSMTransfer.cpp:56
mtiname = {static npos = ,
_M_dataplus = {std::allocator = {<gnu_cxx::new_allocator<cha---Type to continue, or q to quit---
r>> = {}, },
M_p = 0xb373b148 "\314\vC\b\350\fC\b\305\020\001\264\305\020\001\264\305\020\001\264\304\020\001\264z\021\001\264\304\022\001\264\264\001\267\020"}}
#8 0x081f26c4 in GSM::operator<< (os=..., frame=...) at GSMTransfer.cpp:66
No locals.
#9 0x082ad5b7 in csl3HandleFrame (lch=, frame=)
at L3StateMachine.cpp:606
deleteit =
l3msg =
mmchan =
#10 Control::checkemMessages (dcch=dcch@entry=0x959ee50, delay=delay@entry=100)
at L3StateMachine.cpp:771
l3frame =
FUNCTION = "checkemMessages"
set =
#11 0x082b2968 in L3SDCCHLoop (dcch=) at L3StateMachine.cpp:972
No locals.
#12 Control::L3DCCHLoop (dcch=0x959ee50, frame=0xb3d148b0)
at L3StateMachine.cpp:1003
prim = GSM::L3_ESTABLISH_INDICATION
FUNCTION = "L3DCCHLoop"
PRETTY_FUNCTION = "void Control::L3DCCHLoop(Control::L3LogicalChanne---Type to continue, or q to quit---
l, GSM::L3Frame)"
#13 0x082ed9fc in Control::DCCHDispatcher (DCCH=DCCH@entry=0x959ee50)
at DCCHDispatch.cpp:56
frame =
FUNCTION = "DCCHDispatcher"
#14 0x08329e77 in thread_main (arg=0x9573d58) at Threads.cpp:292
p = 0x9573d58
task = 0x82ed100 Control::DCCHDispatcher(Control::L3LogicalChannel*)
param = 0x959ee50
#15 0xb748ef70 in ?? ()
No symbol table info available.
#16 0x09573d58 in ?? ()
No symbol table info available.
#17 0xb73c5bee in ?? ()
No symbol table info available.

[kheimerl]

Seems like a relatively simple crash actually; we note a frame can't be parsed, we then try to print it by parsing it and it explodes.

[kheimerl]

Fixed in https://github.com/endaga/openbts/tree/bok_l3_segfault, other issues continue.