scm: fix a typo in put_cmsg() · tjh.dev/kernel@e7ad33f

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

scm: fix a typo in put_cmsg()

We need to store cmlen instead of len in cm->cmsg_len.

Fixes: 38ebcf5096a8 ("scm: optimize put_cmsg()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

authored by

Eric Dumazet and committed by

David S. Miller 5 years ago e7ad33fa 392c36e5

+1 -1

1 changed file

expand all

net

core

scm.c

+1 -1

net/core/scm.c

··· 232 232 if (!user_write_access_begin(cm, cmlen)) 233 233 goto efault; 234 234 235 - unsafe_put_user(len, &cm->cmsg_len, efault_end); 235 + unsafe_put_user(cmlen, &cm->cmsg_len, efault_end); 236 236 unsafe_put_user(level, &cm->cmsg_level, efault_end); 237 237 unsafe_put_user(type, &cm->cmsg_type, efault_end); 238 238 unsafe_copy_to_user(CMSG_USER_DATA(cm), data,