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| author |   Matthew Wilcox <willy@infradead.org> | 2019-04-05 14:02:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-14 10:00:04 -0700 |
| commit | 15fab63e1e57be9fdb5eec1bbc5916e9825e9acb (patch) | |
| tree | 1353971310401012cf4b108a375e525065d8bec0 /mm | |
| parent | mm: prevent get_user_pages() from overflowing page refcount (diff) | |
| download | linux-dev-15fab63e1e57be9fdb5eec1bbc5916e9825e9acb.tar.xz linux-dev-15fab63e1e57be9fdb5eec1bbc5916e9825e9acb.zip | |
fs: prevent page refcount overflow in pipe_buf_get
Change pipe_buf_get() to return a bool indicating whether it succeeded
in raising the refcount of the page (if the thing in the pipe is a page).
This removes another mechanism for overflowing the page refcount. All
callers converted to handle a failure.
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions