segmentation fault on shadow demo
certabitmh opened this issue · 2 comments
certabitmh commented
Hi,
when trying to run shadow_demo_main (202211.00) on cross compiled target (host=x86_64-pc-linux-gnu, target=arm-buildroot-linux-gnueabi") , I get a segfault when connecting mqtt:
output on target:
[INFO] [SHADOW_DEMO] [shadow_demo_helpers.c:444] Establishing a TLS session to myendpoint-ats.iot.eu-west-1.amazonaws.com:8883.
gdb output:
Reading symbols from shadow_demo_main...done.
Reading /lib/ld-linux.so.3 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
Reading /lib/ld-linux.so.3 from remote target...
0xb6fce9f0 in _start () from target:/lib/ld-linux.so.3
(gdb) c
Continuing.
Reading /usr/lib/libclock_posix.so from remote target...
Reading /usr/lib/libopenssl_posix.so from remote target...
Reading /usr/lib/libsockets_posix.so from remote target...
Reading /usr/lib/libssl.so.1.1 from remote target...
Reading /usr/lib/libcrypto.so.1.1 from remote target...
Reading /lib/libc.so.6 from remote target...
Reading /lib/libdl.so.2 from remote target...
Reading /lib/libpthread.so.0 from remote target...
Reading /lib/libatomic.so.1 from remote target...
Reading /lib/libnss_files.so.2 from remote target...
Reading /lib/libnss_dns.so.2 from remote target...
Reading /lib/libresolv.so.2 from remote target...
Reading /usr/lib/libz.so from remote target...
Program received signal SIGSEGV, Segmentation fault.
0xb6ff01f4 in ?? ()
Backtrace gives:
(gdb) backtrace
#0 0xb6ff01f4 in ?? ()
#1 0x0001398c in sendMessageVector (pContext=pContext@entry=0x3107c <mqttContext>,
pIoVec=pIoVec@entry=0xbefff8b8, ioVecCount=ioVecCount@entry=5)
at /path-to-sdk/libraries/standard/coreMQTT/source/core_mqtt.c:782
#2 0x0001484c in sendConnectWithoutCopy (remainingLength=<optimized out>, pWillInfo=0x0,
pConnectInfo=0xbefff974, pContext=0x3107c <mqttContext>)
at /path-to-sdk/libraries/standard/coreMQTT/source/core_mqtt.c:2236
#3 MQTT_Connect (pContext=pContext@entry=0x3107c <mqttContext>, pConnectInfo=0xbefff974,
pConnectInfo@entry=0xbefff96c, pWillInfo=pWillInfo@entry=0x0, timeoutMs=timeoutMs@entry=1000,
pSessionPresent=0xbefff94d, pSessionPresent@entry=0xbefff945)
at /path-to-sdk/libraries/standard/coreMQTT/source/core_mqtt.c:2654
#4 0x00012738 in EstablishMqttSession (eventCallback=eventCallback@entry=0x12f50 <eventCallback>)
at /path-to-sdk/demos/shadow/shadow_demo_main/shadow_demo_helpers.c:811
#5 0x00011bc0 in main (argc=<optimized out>, argv=<optimized out>)
at /path-to-sdk/demos/shadow/shadow_demo_main/shadow_demo_main.c:681
(gdb)
rawalexe commented
After researching the problem we found that the TransportInterface_t transport was uninitialized and was causing the segmentation fault. The bug is patched with this pull request