• Vakul Garg's avatar
    tls: Do not call sk_memcopy_from_iter with zero length · 65a10e28
    Vakul Garg authored
    In some conditions e.g. when tls_clone_plaintext_msg() returns -ENOSPC,
    the number of bytes to be copied using subsequent function
    sk_msg_memcopy_from_iter() becomes zero. This causes function
    sk_msg_memcopy_from_iter() to fail which in turn causes tls_sw_sendmsg()
    to return failure. To prevent it, do not call sk_msg_memcopy_from_iter()
    when number of bytes to copy (indicated by 'try_to_copy') is zero.
    
    Fixes: d829e9c4 ("tls: convert to generic sk_msg interface")
    Signed-off-by: default avatarVakul Garg <vakul.garg@nxp.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    65a10e28
tls_sw.c 49.6 KB