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authorGerald Schaefer <gerald.schaefer@de.ibm.com>2009-10-06 08:34:14 (GMT)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2009-10-06 08:35:10 (GMT)
commitaf9d2ff9afaae8040dbf09238b2579f92c93579e (patch)
tree61ceddb80062cae529b9c5a34cdf7a07566f1a30 /drivers/s390
parentea2a4d3a3a929ef494952bba57a0ef1a8a877881 (diff)
downloadlinux-fsl-qoriq-af9d2ff9afaae8040dbf09238b2579f92c93579e.tar.xz
[S390] Add EX_TABLE for addressing exception in usercopy functions.
This patch adds an EX_TABLE entry to mvc{p|s|os} usercopy functions that may be called with KERNEL_DS. In combination with collaborative memory management, kernel pages marked as unused may trigger an adressing exception in the usercopy functions. This fixes an unhandled addressing exception bug where strncpy_from_user() is used with len > strnlen and KERNEL_DS, crossing a page boundary to an unused page. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
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