Commit Graph

4 Commits

Author SHA1 Message Date
Thor Thayer 9bf4f00567 EDAC: Use edac_debugfs_remove_recursive() in edac_debugfs_exit()
debugfs_remove() is used to remove a file or a directory from the
debugfs filesystem on an EDAC device exit. However edac_debugfs might
not be empty. This is similar to

  30f84a891b ("EDAC: Use edac_debugfs_remove_recursive()")

which changed the EDAC MCI code to use edac_debugfs_remove_recursive().

Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1455064165-3816-1-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2016-02-10 10:37:46 +01:00
Tan Xiaojun 30f84a891b EDAC: Use edac_debugfs_remove_recursive()
debugfs_remove() is used to remove a file or a directory from the
debugfs filesystem, but mci->debugfs might not empty.

This can be triggered by the following sequence:

1) Enable CONFIG_EDAC_DEBUG
2) insmod an EDAC module (like i3000_edac or similar)
3) rmmod this module
4) we can see files remaining under <debugfs_mountpoint>/edac/ like
   "fake_inject", for example.

Removing edac_core then, causes a NULL pointer dereference.

Reported-by: Yun Wu (Abel) <wuyun.wu@huawei.com>
Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1444787364-104353-1-git-send-email-tanxiaojun@huawei.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-10-14 18:50:32 +02:00
Borislav Petkov 4397bcb4fa EDAC: Add debugfs wrappers
Later patches will convert EDAC users to those.

Signed-off-by: Borislav Petkov <bp@suse.de>
2015-09-22 18:10:22 +02:00
Borislav Petkov 7ac8bf9bc9 EDAC: Carve out debugfs functionality
... into a separate compilation unit and drop a couple of
CONFIG_EDAC_DEBUG ifdefferies. Rename edac_create_debug_nodes() to
edac_create_debugfs_nodes(), while at it.

No functionality change.

Cc: <linux-edac@vger.kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-09-22 12:29:46 +02:00