tree 8f7d2ba98c216a772b5a0e5ab89708dcaceaa1e3
parent f685ddaf0fc9b9f53eb9346c858664776becf5d9
author Wolfgang Walter <wolfgang.walter@studentenwerk.mhn.de> 1190317906 -0400
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1190319357 -0700

rpc: fix garbage in printk in svc_tcp_accept()

we upgraded the kernel of a nfs-server from 2.6.17.11 to 2.6.22.6. Since
then we get the message

lockd: too many open TCP sockets, consider increasing the number of nfsd threads
lockd: last TCP connect from ^\\236^\É^D

These random characters in the second line are caused by a bug in
svc_tcp_accept.

(Note: there are two previous __svc_print_addr(sin, buf, sizeof(buf))
calls in this function, either of which would initialize buf correctly;
but both are inside "if"'s and are not necessarily executed.  This is
less obvious in the second case, which is inside a dprintk(), which is a
macro which expands to an if statement.)

Signed-off-by: Wolfgang Walter <wolfgang.walter@studentenwerk.mhn.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>