From: Vamsi Krishna Samavedam <vskrishn@codeaurora.org>
Date: Tue, 16 May 2017 12:38:08 +0000 (+0200)
Subject: USB: core: replace %p with %pK
X-Git-Tag: v3.2.93~95
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=057747d4f85d37025224b302ec5ac3057b473f22;p=pandora-kernel.git

USB: core: replace %p with %pK

commit 2f964780c03b73de269b08d12aff96a9618d13f3 upstream.

Format specifier %p can leak kernel addresses while not valuing the
kptr_restrict system settings. When kptr_restrict is set to (1), kernel
pointers printed using the %pK format specifier will be replaced with
Zeros. Debugging Note : &pK prints only Zeros as address. If you need
actual address information, write 0 to kptr_restrict.

echo 0 > /proc/sys/kernel/kptr_restrict

[Found by poking around in a random vendor kernel tree, it would be nice
if someone would actually send these types of patches upstream - gkh]

Signed-off-by: Vamsi Krishna Samavedam <vskrishn@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: drop changes in proc_reapurb*(), usbdev_do_ioctl(),
 usb_submit_urb()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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