android_kernel_samsung_msm8976/security
Eric Biggers 6ecf74942f KEYS: allow reaching the keys quotas exactly
commit a08bf91ce28ed3ae7b6fef35d843fef8dc8c2cd9 upstream.

If the sysctl 'kernel.keys.maxkeys' is set to some number n, then
actually users can only add up to 'n - 1' keys.  Likewise for
'kernel.keys.maxbytes' and the root_* versions of these sysctls.  But
these sysctls are apparently supposed to be *maximums*, as per their
names and all documentation I could find -- the keyrings(7) man page,
Documentation/security/keys/core.rst, and all the mentions of EDQUOT
meaning that the key quota was *exceeded* (as opposed to reached).

Thus, fix the code to allow reaching the quotas exactly.

Fixes: 0b77f5bfb4 ("keys: make the keyring quotas controllable through /proc/sys")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-27 22:08:29 +02:00
..
apparmor
integrity
keys KEYS: allow reaching the keys quotas exactly 2019-07-27 22:08:29 +02:00
mstdrv
sdp
selinux selinux: fix GPF on invalid policy 2019-07-27 21:53:36 +02:00
smack
tima_uevent
tomoyo
tz_iccc
yama
capability.c
commoncap.c
device_cgroup.c
inode.c
Kconfig
lsm_audit.c
Makefile
min_addr.c
security.c