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| author | Laura Abbott <labbott@redhat.com> | 2016-09-21 15:25:04 -0700 |
|---|---|---|
| committer | Sami Tolvanen <samitolvanen@google.com> | 2016-10-05 08:09:19 -0700 |
| commit | 50bad62b51e802b5bd5e731915234905fbe4d4f6 (patch) | |
| tree | 2378053ef59c2a0bc0750d1725c86bb9aaca9491 /net/switchdev/switchdev.c | |
| parent | 1a6c07cf6f2671e1a8a561745bdcc295a7cfeb17 (diff) | |
BACKPORT: arm64: Correctly bounds check virt_addr_valid
virt_addr_valid is supposed to return true if and only if virt_to_page
returns a valid page structure. The current macro does math on whatever
address is given and passes that to pfn_valid to verify. vmalloc and
module addresses can happen to generate a pfn that 'happens' to be
valid. Fix this by only performing the pfn_valid check on addresses that
have the potential to be valid.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 31374226
Change-Id: I75cbeb3edb059f19af992b7f5d0baa283f95991b
(cherry picked from commit ca219452c6b8a6cd1369b6a78b1cf069d0386865)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions