Eric W. Biederman ce59791936 sysfs: Complain bitterly about attempts to remove files from nonexistent directories. ... Recently an OOPS was observed from the usb serial io_ti driver when it tried to remove sysfs directories. Upon investigation it turns out this driver was always buggy and that a recent sysfs change had stopped guarding itself against removing attributes from sysfs directories that had already been removed. :( Historically we have been silent about attempting to files from nonexistent sysfs directories and have politely returned error codes. That has resulted in people writing broken code that ignores the error codes. Issue a kernel WARNING and a stack backtrace to make it clear in no uncertain terms that abusing sysfs is not ok, and the callers need to fix their code. This change transforms the io_ti OOPS into a more comprehensible error message and stack backtrace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Reported-by: Wolfgang Frisch <wfpub@roembden.net> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2012-01-24 12:12:32 -08:00
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bin.c	sysfs: only access bin file vm_ops with the active lock	2010-10-22 10:16:43 -07:00
dir.c	sysfs: Make sysfs_rename safe with sysfs_dirents in rbtrees.	2011-11-01 09:16:14 -07:00
file.c	sysfs: Complain bitterly about attempts to remove files from nonexistent directories.	2012-01-24 12:12:32 -08:00
group.c	switch ->is_visible() to returning umode_t	2012-01-03 22:54:55 -05:00
inode.c	sysfs: Complain bitterly about attempts to remove files from nonexistent directories.	2012-01-24 12:12:32 -08:00
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Makefile	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mount.c	Delay struct net freeing while there's a sysfs instance refering to it	2011-06-12 17:45:41 -04:00
symlink.c	sysfs: allow creating symlinks from untagged to tagged directories	2010-07-26 12:02:41 -07:00
sysfs.h	sysfs: propagate umode_t	2012-01-03 22:55:03 -05:00