Re: Linux-2.4.5, reiserfs, Oops!

[Alexander Viro]

On Sat, 26 May 2001, Chris Rankin wrote:

> Linux 2.4.5, SMP, devfs, < 1 GB memory, compiled with gcc-2.95.3
 
> drive. I didn't do anything clever with parameters or anything; just
> "mkreisferfs /dev/sda1", mounted it and then unmounted it again. And
> the kernel oopsed on me.

Bloody hell. 
--- fs/super.c       Fri May 25 21:51:14 2001
+++ fs/super.c.new     Sun May 27 00:21:53 2001
@@ -873,6 +873,7 @@
        }
        spin_unlock(&dcache_lock);
        down_write(&sb->s_umount);
+       lock_kernel();
        sb->s_root = NULL;
        /* Need to clean after the sucker */
        if (fs->fs_flags & FS_LITTER)
@@ -901,6 +902,7 @@
        put_filesystem(fs);
        sb->s_type = NULL;
        unlock_super(sb);
+       unlock_kernel();
        up_write(&sb->s_umount);
        if (bdev) {
                blkdev_put(bdev, BDEV_FS);