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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2019-07-01 17:03:29 -0400 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2019-07-01 17:11:16 -0400 |
| commit | 91abab83839aa2eba073e4a63c729832fdb27ea1 (patch) | |
| tree | 3a083d68dc7d4fdca445313c74852943fafbf7f4 /lib/test_overflow.c | |
| parent | Linux 5.2-rc7 (diff) | |
| download | wireguard-linux-91abab83839aa2eba073e4a63c729832fdb27ea1.tar.xz wireguard-linux-91abab83839aa2eba073e4a63c729832fdb27ea1.zip | |
XArray: Fix xas_next() with a single entry at 0
If there is only a single entry at 0, the first time we call xas_next(),
we return the entry. Unfortunately, all subsequent times we call
xas_next(), we also return the entry at 0 instead of noticing that the
xa_index is now greater than zero. This broke find_get_pages_contig().
Fixes: 64d3e9a9e0cc ("xarray: Step through an XArray")
Reported-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions