CVSROOT: /cvs
Module name: src
Changes by: t...@cvs.openbsd.org 2016/07/13 20:56:16
Modified files:
sys/kern : Tag: OPENBSD_5_9 uipc_mbuf.c uipc_socket.c
sys/netinet : Tag: OPENBSD_5_9 tcp_output.c
sys/sys : Tag: OPENBSD_5_9 mbuf.h
Log message:
backport splice loop fix:
On localhost a user program may create a socket splicing loop.
After writing data into this loop, it was spinning forever causing
a kernel hang. Detect the loop by counting how often the same mbuf
is spliced. If that happens 128 times, assume that there is a loop
and abort the splicing with ELOOP.
Bug found by tedu@; OK tedu@ millert@ benno@
