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| author | Guillermo Julián Moreno <guillermo.julian@naudit.es> | 2016-06-03 14:55:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-06-03 15:06:22 -0700 |
| commit | 65ee03c4b9f89e1b088defd97273be6da169d798 (patch) | |
| tree | ca5bd05b3bc29cf2a5a07f083fd80221049aa06e /Documentation/kdump | |
| parent | 4340fa55298d17049e71c7a34e04647379c269f3 (diff) | |
mm: fix overflow in vm_map_ram()
When remapping pages accounting for 4G or more memory space, the
operation 'count << PAGE_SHIFT' overflows as it is performed on an
integer. Solution: cast before doing the bitshift.
[akpm@linux-foundation.org: fix vm_unmap_ram() also]
[akpm@linux-foundation.org: fix vmap() as well, per Guillermo]
Link: http://lkml.kernel.org/r/etPan.57175fb3.7a271c6b.2bd@naudit.es
Signed-off-by: Guillermo Julián Moreno <guillermo.julian@naudit.es>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/kdump')
0 files changed, 0 insertions, 0 deletions