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authorAl Viro <viro@zeniv.linux.org.uk>2021-05-02 11:57:37 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2021-06-10 11:45:10 -0400
commit8409a0d261e20180361e7afe6d89847d1bad4ce8 (patch)
tree1c489a52514e16da863c535465c2b4206189a4b7 /samples/livepatch
parent185ac4d43669314f31c9c27d1ffc5ebcad791351 (diff)
sanitize iov_iter_fault_in_readable()
1) constify iov_iter argument; we are not advancing it in this primitive. 2) cap the amount requested by the amount of data in iov_iter. All existing callers should've been safe, but the check is really cheap and doing it here makes for easier analysis, as well as more consistent semantics among the primitives. 3) don't bother with iterate_iovec(). Explicit loop is not any harder to follow, and we get rid of standalone iterate_iovec() users - it's only used by iterate_and_advance() and (soon to be gone) iterate_all_kinds(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'samples/livepatch')
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