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| author |   kettenis <kettenis@openbsd.org> | 2016-07-13 17:52:37 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2016-07-13 17:52:37 +0000 |
| commit | 99232cbaa222c3c4476222674bbeb72a7fbe7dfd (patch) | |
| tree | d7f65fa118932820f24b68f1d25b5f1486f578e9 /sys/dev/pv/files.pv | |
| parent | Revert previous; the __MAP_NOFAULT test is inverted and the commit message is (diff) | |
| download | wireguard-openbsd-99232cbaa222c3c4476222674bbeb72a7fbe7dfd.tar.xz wireguard-openbsd-99232cbaa222c3c4476222674bbeb72a7fbe7dfd.zip | |
Since mappings established using __MAP_NOFAULT will be converted into anonymous
memory if the file backing the mapping is truncated, we should check resource
limits. This prevents callers from triggering a kernel panic and a potential
integer overflow in the amap code by forcing the allocation of too many slots.
Based on an analysis from Jesse Hertz and Tim Newsham.
ok deraadt@
Diffstat (limited to 'sys/dev/pv/files.pv')
0 files changed, 0 insertions, 0 deletions