ngctl can crash the kernel
sdrhodus at gmail.com
Fri Nov 5 23:54:13 UTC 2010
Same panic here...
Also the MPD2 port is broken, I'm guessing a netgraph problem too.
2010/11/5 sdfsdf rwerwer <freebsd-tracker-int0dh at mail.ru>:
> Hi everybody,
> The following commands lead the 9.0-CURRENT kernel to crash:
> [root at freebsd /usr/home/int0dh]# ngctl
> Available commands:
> config get or set configuration of node at <path>
> connect Connects hook <peerhook> of the node at <relpath> to <hook>
> debug Get/set debugging verbosity level
> dot Produce a GraphViz (.dot) of the entire netgraph.
> help Show command summary or get more help on a specific command
> list Show information about all nodes
> mkpeer Create and connect a new node to the node at "path"
> msg Send a netgraph control message to the node at "path"
> name Assign name <name> to the node at <path>
> read Read and execute commands from a file
> rmhook Disconnect hook "hook" of the node at "path"
> show Show information about the node at <path>
> shutdown Shutdown the node at <path>
> status Get human readable status information from the node at <path>
> types Show information about all installed node types
> write Send a data packet down the hook named by "hook".
> quit Exit program
> + mkpeer ksocket myhook inet/stream/tcp
> + msg .:myhook connect inet/127.0.0.1:22
> After last command the kernel panics.
> Any listening TCP port can be used instead of 22.
> The panic occurs here (sys/kern/uipc_sockbuf.c):
> sbappendaddr_locked(struct sockbuf *sb, const struct sockaddr *asa,
> struct mbuf *m0, struct mbuf *control)
> struct mbuf *m, *n, *nlast;
> int space = asa->sa_len;
> if (m0 && (m0->m_flags & M_PKTHDR) == 0)
> panic("sbappendaddr_locked" ;
> I`ve tried with the custom kernel only, but I think that issue can be reproduced with GENERIC too.
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