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| author | Gerald Schaefer <[email protected]> | 2009-10-06 08:34:14 +0000 |
|---|---|---|
| committer | Martin Schwidefsky <[email protected]> | 2009-10-06 08:35:10 +0000 |
| commit | af9d2ff9afaae8040dbf09238b2579f92c93579e (patch) | |
| tree | 61ceddb80062cae529b9c5a34cdf7a07566f1a30 /fs/proc/array.c | |
| parent | [S390] 64-bit register support for 31-bit processes (diff) | |
| download | kernel-af9d2ff9afaae8040dbf09238b2579f92c93579e.tar.gz kernel-af9d2ff9afaae8040dbf09238b2579f92c93579e.zip | |
[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 <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions