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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-01-18 04:13:21 +0100 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-01-18 04:33:33 +0100 |
| commit | c44aa5e8ab58b5f4cf473970ec784c3333496a2e (patch) | |
| tree | 1ebdac6c222f65df90b970fa8e6cc160454adfaf /lib/test_xarray.c | |
| parent | XArray: Fix xa_find_after with multi-index entries (diff) | |
| download | linux-c44aa5e8ab58b5f4cf473970ec784c3333496a2e.tar.xz linux-c44aa5e8ab58b5f4cf473970ec784c3333496a2e.zip | |
XArray: Fix xas_find returning too many entries
If you call xas_find() with the initial index > max, it should have
returned NULL but was returning the entry at index.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index c8cc97ded0fa..55c14e8c8859 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -2,6 +2,7 @@ /* * test_xarray.c: Test the XArray API * Copyright (c) 2017-2018 Microsoft Corporation + * Copyright (c) 2019-2020 Oracle * Author: Matthew Wilcox <willy@infradead.org> */ @@ -911,6 +912,7 @@ static noinline void check_multi_find_1(struct xarray *xa, unsigned order) xa_store_order(xa, multi, order, xa_mk_value(multi), GFP_KERNEL); XA_BUG_ON(xa, xa_store_index(xa, next, GFP_KERNEL) != NULL); + XA_BUG_ON(xa, xa_store_index(xa, next + 1, GFP_KERNEL) != NULL); index = 0; XA_BUG_ON(xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) != @@ -923,9 +925,12 @@ static noinline void check_multi_find_1(struct xarray *xa, unsigned order) XA_BUG_ON(xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT) != xa_mk_value(next)); XA_BUG_ON(xa, index != next); + XA_BUG_ON(xa, xa_find_after(xa, &index, next, XA_PRESENT) != NULL); + XA_BUG_ON(xa, index != next); xa_erase_index(xa, multi); xa_erase_index(xa, next); + xa_erase_index(xa, next + 1); XA_BUG_ON(xa, !xa_empty(xa)); #endif } |