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Special Forums IP Networking recvfrom() causes segmentation fault Post 302324261 by fpmurphy on Wednesday 10th of June 2009 10:43:18 AM
Old 06-10-2009
Signal 6 is SIGABRT.

Without seeing your code, it is difficult to tell what actually is causing the core dump.

Have you allocated space for the receive buffer? Is the receive buffer length argument correct? Are you capturing the senders address and, if so, is the address structure and length of address structure arguments correct?
 

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tapset::udp(3stap)														tapset::udp(3stap)

NAME
tapset::udp - systemtap udp tapset DESCRIPTION
This family of probe points is used to probe events that occur in the UDP layer. udp.sendmsg Fires whenever a process sends a UDP message See probe::udp.sendmsg(3stap) for details. udp.sendmsg.return Fires whenever an attempt to send a UDP message is completed See probe::udp.sendmsg.return(3stap) for details. udp.recvmsg Fires whenever a UDP message is received See probe::udp.recvmsg(3stap) for details. udp.recvmsg.return Fires whenever an attempt to receive a UDP message received is completed See probe::udp.recvmsg.return(3stap) for details. udp.disconnect Fires when a process requests for a UDP disconnection See probe::udp.disconnect(3stap) for details. udp.disconnect.return UDP has been disconnected successfully See probe::udp.disconnect.return(3stap) for details. SEE ALSO
probe::udp.sendmsg(3stap), probe::udp.sendmsg.return(3stap), probe::udp.recvmsg(3stap), probe::udp.recvmsg.return(3stap), probe::udp.disconnect(3stap), probe::udp.disconnect.return(3stap), stap(1), stapprobes(3stap) IBM
--- tapset::udp(3stap)
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