Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | David Howells <> | Subject | [PATCH] CRED: Fix commit_creds() on a process that has no mm | Date | Thu, 08 Jan 2009 11:18:31 +0000 |
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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> ---
kernel/cred.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/kernel/cred.c b/kernel/cred.c index ff7bc07..480a61a 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(); }
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