linux_dsm_epyc7002/security
David Howells ceb73c1204 KEYS: Fix __key_link_end() quota fixup on error
Fix __key_link_end()'s attempt to fix up the quota if an error occurs.

There are two erroneous cases: Firstly, we always decrease the quota if
the preallocated replacement keyring needs cleaning up, irrespective of
whether or not we should (we may have replaced a pointer rather than
adding another pointer).

Secondly, we never clean up the quota if we added a pointer without the
keyring storage being extended (we allocate multiple pointers at a time,
even if we're not going to use them all immediately).

We handle this by setting the bottom bit of the preallocation pointer in
__key_link_begin() to indicate that the quota needs fixing up, which is
then passed to __key_link() (which clears the whole thing) and
__key_link_end().

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 08:58:20 +10:00
..
apparmor Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
integrity/ima ima: fix add LSM rule bug 2011-01-03 16:36:33 -08:00
keys KEYS: Fix __key_link_end() quota fixup on error 2011-01-26 08:58:20 +10:00
selinux selinux: return -ENOMEM when memory allocation fails 2011-01-24 11:35:47 +11:00
smack Merge branch 'master' into next 2011-01-10 09:46:24 +11:00
tomoyo fs: dcache scale d_unhashed 2011-01-07 17:50:21 +11:00
capability.c af_unix: Avoid socket->sk NULL OOPS in stream connect security hooks. 2011-01-05 15:38:53 -08:00
commoncap.c capabilities/syslog: open code cap_syslog logic to fix build failure 2010-11-15 15:40:01 -08:00
device_cgroup.c Merge branch 'master' into next 2010-05-06 10:56:07 +10:00
inode.c convert get_sb_single() users 2010-10-29 04:16:28 -04:00
Kconfig keys: add new key-type encrypted 2010-11-29 08:55:29 +11:00
lsm_audit.c Merge branch 'master' into next 2010-05-06 10:56:07 +10:00
Makefile AppArmor: Enable configuring and building of the AppArmor security module 2010-08-02 15:38:34 +10:00
min_addr.c mmap_min_addr check CAP_SYS_RAWIO only for write 2010-04-23 08:56:31 +10:00
security.c Merge branch 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin 2011-01-07 08:56:33 -08:00