uml: boot broken due to buffer overrun

mconsole_init() passed 256 bytes as length in os_create_unix_socket, while
the sizeof UNIX_PATH_MAX is 108. This patch fixes that problem and avoids
a big overrun bug reported on UML bootup.

sockaddr_un.sun_path is UNIX_PATH_MAX long which causes the problem.
Reported-by: Vikas K Managutte <[email protected]>
Reported-by: Sarvesh Kumar Lal Das <[email protected]>
Signed-off-by: Balbir Singh <[email protected]>
Reviewed-by: Pekka Enberg <[email protected]>
Reviewed-by: WANG Cong <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: <[email protected]>		[please check with Jeff]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
1 file changed