linux/security/apparmor
John Johansen 2e680dd61e apparmor: fix IRQ stack overflow during free_profile
BugLink: http://bugs.launchpad.net/bugs/1056078

Profile replacement can cause long chains of profiles to build up when
the profile being replaced is pinned. When the pinned profile is finally
freed, it puts the reference to its replacement, which may in turn nest
another call to free_profile on the stack. Because this may happen for
each profile in the replacedby chain this can result in a recusion that
causes the stack to overflow.

Break this nesting by directly walking the chain of replacedby profiles
(ie. use iteration instead of recursion to free the list). This results
in at most 2 levels of free_profile being called, while freeing a
replacedby chain.

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-10-25 02:12:50 +11:00
..
include userns: Convert apparmor to use kuid and kgid where appropriate 2012-09-21 03:13:21 -07:00
.gitignore AppArmor: remove af_names.h from .gitignore 2012-09-01 08:35:34 -07:00
Kconfig
Makefile apparmor: fix apparmor OOPS in audit_log_untrustedstring+0x1c/0x40 2012-10-17 16:29:46 -07:00
apparmorfs.c AppArmor: export known rlimit names/value mappings in securityfs 2012-02-27 11:38:19 -08:00
audit.c apparmor: move task from common_audit_data to apparmor_audit_data 2012-04-09 12:23:02 -04:00
capability.c LSM: do not initialize common_audit_data to 0 2012-04-09 12:23:04 -04:00
context.c
domain.c userns: Convert apparmor to use kuid and kgid where appropriate 2012-09-21 03:13:21 -07:00
file.c userns: Convert apparmor to use kuid and kgid where appropriate 2012-09-21 03:13:21 -07:00
ipc.c LSM: do not initialize common_audit_data to 0 2012-04-09 12:23:04 -04:00
lib.c LSM: do not initialize common_audit_data to 0 2012-04-09 12:23:04 -04:00
lsm.c userns: Teach security_path_chown to take kuids and kgids 2012-09-21 03:13:25 -07:00
match.c AppArmor: Update dfa matching routines. 2012-03-14 06:15:24 -07:00
path.c apparmor: fix long path failure due to disconnected path 2012-05-18 11:09:52 -07:00
policy.c apparmor: fix IRQ stack overflow during free_profile 2012-10-25 02:12:50 +11:00
policy_unpack.c LSM: do not initialize common_audit_data to 0 2012-04-09 12:23:04 -04:00
procattr.c apparmor: sparse fix: include procattr.h in procattr.c 2011-09-09 16:56:29 -07:00
resource.c LSM: do not initialize common_audit_data to 0 2012-04-09 12:23:04 -04:00
sid.c