(no subject)
Hi everybody,
The following commands lead the 9.0-CURRENT kernel to crash:
[r...@freebsd /usr/home/int0dh]# ngctl
Available commands:
config get or set configuration of node at path
connectConnects hook peerhook of the node at relpath to hook
debug Get/set debugging verbosity level
dotProduce 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
msgSend 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):
int
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;
SOCKBUF_LOCK_ASSERT(sb);
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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ngctl can crash the kernel
Hi everybody,
The following commands lead the 9.0-CURRENT kernel to crash:
[r...@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):
int
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;
SOCKBUF_LOCK_ASSERT(sb);
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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http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
