QNX port of Bird 1.4.5, corrupt linked lists?
Pendzik, Edward
ependzik at harris.com
Thu Dec 11 07:48:10 CET 2014
Thu Dec 11 01:46:41 EST 2014
Hello.
I am working on porting bird 1.4.5 to QNX SP1 (QNX OS service pack 1).
QNX is actually close to BSD and there have been very few changes to the code.
I have bird built but I get a core dump on initialization.
I was hoping that someone could give me some specific ideas on
exactly where to look while debugging. I have many years of writing and debugging
Linux and Solaris drivers and networking code, but I am not yet familiar
with the bird internal data structures.
I tried building with and without pthreads.
I get a core dump both ways, in different spots,
both when calling WALK_LIST() with a list.
// with pthreads
#0 0x00111460 in if_notify_change (c=1, i=0x187050) at ../../nest/iface.c:218
218 WALK_LIST(p, active_proto_list)
// without pthreads
if_start_update () at ../../nest/iface.c:338
338 WALK_LIST(i, iface_list)
I also turned off the '#define POISON' in lib/slab.c,
and on a different run did a bzero() instead of a memset(POISON).
Neither changed the results.
Attached find my bird.conf
Any hints would be appreciated.
PS
Something else weird. I get an error when bird starts up and parses bird.conf.
'protocol device' rejects 'interface "en0";', even though en0 is the correct name
of my ethernet interface, and ifconfig shows it exists and is up with an ipaddr.
protocol device {
interface "en0";
}
% ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33192
inet 127.0.0.1 netmask 0xff000000
wip0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
address: 01
en0: flags=80008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,SHIM> mtu 1500
address: 00:80:0f:9e:08:74
media: Ethernet 100baseTX full-duplex
status: active
inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
Thanks,
Ed Pendzik
ependzik at harris.com
//------------------------------------------------------------
btop="/fs"
confopts="\
--sysconfdir=$btop \
--localstatedir=$btop \
--prefix=$btop \
CC=$HOME/qccbird \
CFLAGS=-V4.4.2,gcc_ntoarmle \
--disable-pthreads \
--build=i686-pc-linux-gnu \
--host=arm-unknown-nto-qnx6.5.0 \
--with-sysconfig=qnx \
--with-protocols=ospf,pipe,static,bfd,rip \
--enable-debug \
--disable-client \
"
./configure $confopts
//------------------------------------------------------------
// WITH PTHREADS (--enable-pthreads)
// console output
117.localhost_root 2014-12-11 06:10:06 <TRACE> direct1: Initializing
2014-12-11 06:10:06 <TRACE> kernel1: Initializing
2014-12-11 06:10:06 <TRACE> device1: Initializing
2014-12-11 06:10:06 <TRACE> ospf1: Initializing
2014-12-11 06:10:06 <TRACE> device1: Starting
2014-12-11 06:10:06 <TRACE> device1: Scanning interfaces
@@@ if_notify_change: this is debug()
@@@ if_notify_change: this is DBG()
Interface change notification (1) for lo0
IF1: lo0 UP LINK-UP MA LOOP IGN MTU=33192
127.0.0.1, net 127.0.0.0/8 bc 0.0.0.0 -> 0.0.0.0 DOWN
unlinking old /fs/coredumps/bird.core
dumping to /fs/coredumps/bird.core
thread 1.flags is 0x1
thread 1 is was SIGNALLED
thread 1.why is 0x1
ldd mapinfos:
Thread 1's SP is at 0xff7d4
Adjusting 24576 bytes @ 0xfa000->0x100000 to 4096 bytes @ 0xff000->0x100000
thread 1 is current thread!
blanking 24576 bytes of stack memory at 0xff000
max=0x6000, min = 0x5000 (0xff000->0x100000)
dumping 483328 bytes of memory at 0x100000
dumping 8192 bytes of memory at 0x176000
dumping 4096 bytes of memory at 0x178000
dumping 135168 bytes of memory at 0x179000
dumping 471040 bytes of memory at 0x1000000
dumping 16384 bytes of memory at 0x1073000
dumping 4096 bytes of memory at 0x1077000
dumping 172032 bytes of memory at 0x78000000
dumping 24576 bytes of memory at 0x7802a000
ntoarm-gdb bird bird.core
GNU gdb 6.8 qnx-nto (rev. 506)
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-unknown-nto-qnx6.5.0"...
Reading symbols from /home2/opt/qnx650sp1/target/qnx6/armle/lib/libsocket.so.3...done.
Loaded symbols for /home2/opt/qnx650sp1/target/qnx6/armle/lib/libsocket.so.3
Reading symbols from /home2/opt/qnx650sp1/target/qnx6/armle/lib/libc.so.3...done.
Loaded symbols for /home2/opt/qnx650sp1/target/qnx6/armle/lib/libc.so.3
Program terminated with signal 10, Bus error.
[New pid 1708126 tid 1]
#0 0x00111460 in if_notify_change (c=1, i=0x187050) at ../../nest/iface.c:218
218 WALK_LIST(p, active_proto_list)
(gdb) whete
Undefined command: "whete". Try "help".
(gdb) where
#0 0x00111460 in if_notify_change (c=1, i=0x187050) at ../../nest/iface.c:218
#1 0x00111624 in if_change_flags (i=0x187050, flags=1073742306) at ../../nest/iface.c:254
#2 0x00111988 in if_end_partial_update (i=0x187050) at ../../nest/iface.c:350
#3 0x00111a34 in if_end_update () at ../../nest/iface.c:368
#4 0x0015a184 in kif_do_scan (p=0x18a528) at krt-sock.c:894
#5 0x0015ab0c in kif_scan (t=0x1860d0) at krt.c:98
#6 0x0015af64 in kif_start (P=0x18a528) at krt.c:191
#7 0x0010e22c in proto_rethink_goal (p=0x18a528) at ../../nest/proto.c:632
#8 0x0010dff0 in protos_commit (new=0x18f9a8, old=0x0, force_reconfig=0, type=1) at ../../nest/proto.c:580
#9 0x00151df0 in config_do_commit (c=0x18f9a8, type=1) at conf.c:255
#10 0x00152030 in config_commit (c=0x18f9a8, type=1, timeout=0) at conf.c:348
#11 0x0015f788 in main (argc=2, argv=0xff944) at main.c:822
(gdb)
//------------------------------------------------------------
// WITHOUT PTHREADS (--disable-pthreads)
// console output
128.localhost_root 2014-12-11 06:15:41 <TRACE> direct1: Initializing
2014-12-11 06:15:41 <TRACE> kernel1: Initializing
2014-12-11 06:15:41 <TRACE> device1: Initializing
2014-12-11 06:15:41 <TRACE> ospf1: Initializing
2014-12-11 06:15:41 <TRACE> device1: Starting
2014-12-11 06:15:41 <TRACE> device1: Scanning interfaces
dumping to /fs/coredumps/bird.core
thread 1.flags is 0x1
thread 1 is was SIGNALLED
thread 1.why is 0x1
ldd mapinfos:
Thread 1's SP is at 0xff828
Adjusting 24576 bytes @ 0xfa000->0x100000 to 4096 bytes @ 0xff000->0x100000
thread 1 is current thread!
blanking 24576 bytes of stack memory at 0xff000
max=0x6000, min = 0x5000 (0xff000->0x100000)
dumping 483328 bytes of memory at 0x100000
dumping 8192 bytes of memory at 0x176000
dumping 4096 bytes of memory at 0x178000
dumping 98304 bytes of memory at 0x179000
dumping 471040 bytes of memory at 0x1000000
dumping 16384 bytes of memory at 0x1073000
dumping 4096 bytes of memory at 0x1077000
dumping 172032 bytes of memory at 0x78000000
dumping 24576 bytes of memory at 0x7802a000
ntoarm-gdb bird bird.core
GNU gdb 6.8 qnx-nto (rev. 506)
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-unknown-nto-qnx6.5.0"...
warning: Host file /home2/opt/qnx650sp1/target/qnx6/armle/lib/libsocket.so.3 does not match target file.
warning: Host file /home2/opt/qnx650sp1/target/qnx6/armle/lib/libc.so.3 does not match target file.
Reading symbols from /home2/opt/qnx650sp1/target/qnx6/armle/lib/libsocket.so.3...done.
Loaded symbols for /home2/opt/qnx650sp1/target/qnx6/armle/lib/libsocket.so.3
Reading symbols from /home2/opt/qnx650sp1/target/qnx6/armle/lib/libc.so.3...done.
Loaded symbols for /home2/opt/qnx650sp1/target/qnx6/armle/lib/libc.so.3
Program terminated with signal 11, Segmentation fault.
[New pid 2158686 tid 1]
#0 0x001118c0 in if_start_update () at ../../nest/iface.c:338
338 WALK_LIST(i, iface_list)
(gdb) bt
#0 0x001118c0 in if_start_update () at ../../nest/iface.c:338
#1 0x0015a0fc in kif_do_scan (p=0x18a528) at krt-sock.c:892
#2 0x0015aa9c in kif_scan (t=0x1860d0) at krt.c:98
#3 0x0015aef4 in kif_start (P=0x18a528) at krt.c:191
#4 0x0010e1bc in proto_rethink_goal (p=0x18a528) at ../../nest/proto.c:632
#5 0x0010df80 in protos_commit (new=0x18f9a8, old=0x0, force_reconfig=0, type=1) at ../../nest/proto.c:580
#6 0x00151d80 in config_do_commit (c=0x18f9a8, type=1) at conf.c:255
#7 0x00151fc0 in config_commit (c=0x18f9a8, type=1, timeout=0) at conf.c:348
#8 0x0015f6cc in main (argc=2, argv=0xff944) at main.c:822
(gdb)
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