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authorCatalin Marinas <catalin.marinas@arm.com>2015-03-20 16:48:13 +0000
committerDavid S. Miller <davem@davemloft.net>2015-03-20 16:31:09 -0400
commit91edd096e224941131f896b86838b1e59553696a (patch)
tree42508ea8f958c83cacba4a44efe46e096840a272 /net/caif
parentde58a6da852da52b4feb862c69aa4ace6d5be352 (diff)
net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour
Commit db31c55a6fb2 (net: clamp ->msg_namelen instead of returning an error) introduced the clamping of msg_namelen when the unsigned value was larger than sizeof(struct sockaddr_storage). This caused a msg_namelen of -1 to be valid. The native code was subsequently fixed by commit dbb490b96584 (net: socket: error on a negative msg_namelen). In addition, the native code sets msg_namelen to 0 when msg_name is NULL. This was done in commit (6a2a2b3ae075 net:socket: set msg_namelen to 0 if msg_name is passed as NULL in msghdr struct from userland) and subsequently updated by 08adb7dabd48 (fold verify_iovec() into copy_msghdr_from_user()). This patch brings the get_compat_msghdr() in line with copy_msghdr_from_user(). Fixes: db31c55a6fb2 (net: clamp ->msg_namelen instead of returning an error) Cc: David S. Miller <davem@davemloft.net> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/caif')
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