[PATCH] fix sysfs oops [1/4]

[PATCH] fix sysfs oops [1/4]

[Greg KH]

This fixes an oops when a kobject is unregistered before it's child is.
The usb-serial devices show this bug very easily (yank out a device
while its port is opened...)

Patch was originally written by Mike Gorse <mgorse@mgorse.dhs.org>


diff -Nru a/fs/sysfs/dir.c b/fs/sysfs/dir.c
--- a/fs/sysfs/dir.c	Mon Dec 22 16:02:07 2003
+++ b/fs/sysfs/dir.c	Mon Dec 22 16:02:07 2003
@@ -83,7 +83,8 @@
 	struct dentry * parent = dget(d->d_parent);
 	down(&parent->d_inode->i_sem);
 	d_delete(d);
-	simple_rmdir(parent->d_inode,d);
+	if (d->d_inode)
+		simple_rmdir(parent->d_inode,d);
 
 	pr_debug(" o %s removing done (%d)\n",d->d_name.name,
 		 atomic_read(&d->d_count));


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[PATCH] some sysfs patches for 2.6.0 [0/4]

[Greg KH]

Here are 4 sysfs related patches for 2.6.0.  They do the following:

  - fix an oops in sysfs when a kobject has been unregistered before
    it's child has.  An example of this is the oops that happens in
    2.6.0 whenever a usb-serial device is removed that has a port open
    by a user (almost all Pilot devices do this by virtue of the
    protocol...)


  - add sysfs support to the following char drivers:
  	- mem devices (/dev/null and friends)
	- misc devices (/dev/psaux and other odd devices)
	- vc devices

Please apply these to 2.6.0 or your -mm tree depending on how
comfortable you are with them.

thanks,

greg k-h
	

[PATCH] fix sysfs oops [1/4]

[Greg KH]

This fixes an oops when a kobject is unregistered before it's child is.
The usb-serial devices show this bug very easily (yank out a device
while its port is opened...)

Patch was originally written by Mike Gorse <mgorse@mgorse.dhs.org>


diff -Nru a/fs/sysfs/dir.c b/fs/sysfs/dir.c
--- a/fs/sysfs/dir.c	Mon Dec 22 16:02:07 2003
+++ b/fs/sysfs/dir.c	Mon Dec 22 16:02:07 2003
@@ -83,7 +83,8 @@
 	struct dentry * parent = dget(d->d_parent);
 	down(&parent->d_inode->i_sem);
 	d_delete(d);
-	simple_rmdir(parent->d_inode,d);
+	if (d->d_inode)
+		simple_rmdir(parent->d_inode,d);
 
 	pr_debug(" o %s removing done (%d)\n",d->d_name.name,
 		 atomic_read(&d->d_count));