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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
30f84a891bf6 ("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>
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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>
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Later patches will convert EDAC users to those.
Signed-off-by: Borislav Petkov <bp@suse.de>
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... 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>
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Thor Thayer
Tan Xiaojun
Borislav Petkov