diff options
| author | David Howells <dhowells@redhat.com> | 2009-01-08 11:18:31 +0000 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-01-08 23:13:56 +1100 |
| commit | b9456371a73871d001e67b5f4eac118c2c278e1c (patch) | |
| tree | 1bfe87d83dc3d7f34b9d7edf9a9ef3a693afcf29 /kernel/cred.c | |
| parent | 9e42d0cf5020aaf217433cad1a224745241d212a (diff) | |
| download | lwn-b9456371a73871d001e67b5f4eac118c2c278e1c.tar.gz lwn-b9456371a73871d001e67b5f4eac118c2c278e1c.zip | |
CRED: Fix commit_creds() on a process that has no mm
Fix commit_creds()'s handling of a process that has no mm (such as one that is
calling or has called daemonize()). commit_creds() should check to see if
task->mm is not NULL before calling set_dumpable() on it.
Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'kernel/cred.c')
| -rw-r--r-- | kernel/cred.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/cred.c b/kernel/cred.c index ff7bc071991c..480a61aec805 100644 --- a/kernel/cred.c +++ b/kernel/cred.c @@ -372,7 +372,8 @@ int commit_creds(struct cred *new) old->fsuid != new->fsuid || old->fsgid != new->fsgid || !cap_issubset(new->cap_permitted, old->cap_permitted)) { - set_dumpable(task->mm, suid_dumpable); + if (task->mm) + set_dumpable(task->mm, suid_dumpable); task->pdeath_signal = 0; smp_wmb(); } |