Messages in this thread Patch in this message | | | From | Anastasia Belova <> | Subject | [PATCH 5.10 1/1] btrfs: fix region size in count_bitmap_extents | Date | Tue, 31 Oct 2023 15:49:00 +0300 |
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Region size should be calculated by subtracting the end from the beginning.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: dfb79ddb130e ("btrfs: track discardable extents for async discard") Signed-off-by: Anastasia Belova <abelova@astralinux.ru> --- fs/btrfs/free-space-cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 4989c60b1df9..a34e266a0969 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1930,7 +1930,7 @@ static int count_bitmap_extents(struct btrfs_free_space_ctl *ctl, bitmap_for_each_set_region(bitmap_info->bitmap, rs, re, 0, BITS_PER_BITMAP) { - bytes -= (rs - re) * ctl->unit; + bytes -= (re - rs) * ctl->unit; count++; if (!bytes) -- 2.30.2
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