[openssl-users] Issue with DTLS for UDP

Grace Priscilla Jero grace.priscilla at gmail.com
Tue Oct 24 10:25:49 UTC 2017

Hi All,

We are currently facing an issue while initiating DTLS for UDP conenctions.
Below is the backtrace for the coredump.

Program terminated with signal 11, Segmentation fault.

#0  0x00007fdf1825c760 in BIO_method_type () from

(gdb) bt

#0  0x00007fdf1825c760 in BIO_method_type () from

#1  0x00007fdf18260459 in BIO_dgram_is_sctp () from

#2  0x00007fdf1865da66 in state_machine () from

#3  0x00007fdf18653f63 in SSL_do_handshake () from

#4  0x00007fdf1a4a4f98 in FI_sip_dtls_accept (AP_server=0x2323b98) at

#5  0x00007fdf1a5c8a83 in FI_check_scrutation_list (AI_nb=1) at

#6  0x00007fdf1a5c9c7a in FP_scrutation_thread (AP_param=0x0) at

#7  0x00007fdf19605bb8 in _tbx_thr_start (params=<value optimized out>) at

#8  0x00007fdf1c020b50 in start_thread () from

#9  0x00007fdf1af5efbd in clone () from /lib/x86_64-linux-gnu/libc.so.6

#10 0x0000000000000000 in ?? ()

We are using SSL_accept to accept the connection for which we see the
failure. Please let know if you have any thoughts.

We are debugging to see why it crashes. The issue is seen only with DTLS
over UDP.


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