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| author |   Grazvydas Ignotas <notasas@gmail.com> | 2015-02-12 15:00:19 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 18:54:11 -0800 |
| commit | 9cb12d7b4ccaa976f97ce0c5fd0f1b6a83bc2a75 (patch) | |
| tree | e0a8e02b5cb9296e057f68b4cb8a53398345e189 /mm/page_alloc.c | |
| parent | kernel/cpuset.c: Mark cpuset_init_current_mems_allowed as __init (diff) | |
| download | linux-dev-9cb12d7b4ccaa976f97ce0c5fd0f1b6a83bc2a75.tar.xz linux-dev-9cb12d7b4ccaa976f97ce0c5fd0f1b6a83bc2a75.zip | |
mm/memory.c: actually remap enough memory
For whatever reason, generic_access_phys() only remaps one page, but
actually allows to access arbitrary size. It's quite easy to trigger
large reads, like printing out large structure with gdb, which leads to a
crash. Fix it by remapping correct size.
Fixes: 28b2ee20c7cb ("access_process_vm device memory infrastructure")
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions