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| author | Matthew Wilcox | 2019-04-05 23:02:10 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2019-04-14 19:00:04 +0200 |
| commit | 15fab63e1e57be9fdb5eec1bbc5916e9825e9acb (patch) | |
| tree | 1353971310401012cf4b108a375e525065d8bec0 /mm/gup.c | |
| parent | mm: prevent get_user_pages() from overflowing page refcount (diff) | |
| download | kernel-qcow2-linux-15fab63e1e57be9fdb5eec1bbc5916e9825e9acb.tar.gz kernel-qcow2-linux-15fab63e1e57be9fdb5eec1bbc5916e9825e9acb.tar.xz kernel-qcow2-linux-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/gup.c')
0 files changed, 0 insertions, 0 deletions