Re: [PATCH] 2.5.68-bk1 crash in devfs_remove() for defpts files

[Christoph Hellwig <hch@lst.de>]

On Mon, Apr 21, 2003 at 01:49:18PM -0400, Pavel Roskin wrote:
> This patch
> helps, but it probably shouldn't be applied unless it turns out to be
> correct.

Right, the patch only hides the bug.

> By the way, I wonder why devfs_put(de) is called twice in a row in
> devfs_remove().

Once for the temporary reference we got from _devfs_find_entry,
the second time to actually make it go away.

Could you please try this patch?

--- 1.11/drivers/char/pty.c	Mon Mar 31 03:16:19 2003
+++ edited/drivers/char/pty.c	Mon Apr 21 18:32:46 2003
@@ -459,6 +459,7 @@
 		pts_driver[i].name_base = i*NR_PTYS;
 		pts_driver[i].num = ptm_driver[i].num;
 		pts_driver[i].other = &ptm_driver[i];
+		ptm_driver[i].flags |= TTY_DRIVER_NO_DEVFS;
 		pts_driver[i].table = pts_table[i];
 		pts_driver[i].termios = pts_termios[i];
 		pts_driver[i].termios_locked = pts_termios_locked[i];