Re: Oops in 2.4.7-pre9.

[Andrew Morton]

Niels Kristian Bech Jensen wrote:
> 
> I get this oops while booting 2.4.7-pre9:

Kernel is trying to read /proc/pid entries for a kernel thread
which has called daemonize().  It has a null task_struct.mm.

I tested various other possible problems, such as making
/sbin/hotplug an elf executable and it looks OK, apart from
the /proc problem.

--- linux-2.4.7-pre9/fs/proc/base.c	Fri Jul 20 15:39:12 2001
+++ linux-akpm/fs/proc/base.c	Fri Jul 20 16:43:02 2001
@@ -670,7 +670,7 @@ static struct inode *proc_pid_make_inode
 	inode->u.proc_i.task = task;
 	inode->i_uid = 0;
 	inode->i_gid = 0;
-	if (ino == PROC_PID_INO || task->mm->dumpable) {
+	if (ino == PROC_PID_INO || (task->mm && task->mm->dumpable)) {
 		inode->i_uid = task->euid;
 		inode->i_gid = task->egid;
 	}