USB: core: replace %p with %pK

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commit 2f964780c0 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>

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Vamsi Krishna Samavedam 2017-05-16 14:38:08 +02:00 • committed by Greg Kroah-Hartman

parent 5d263d94a8

commit 3888f62943

3 changed files with 10 additions and 10 deletions

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14

drivers/usb/core/devio.c

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4

drivers/usb/core/hcd.c

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2

drivers/usb/core/urb.c

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