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-rw-r--r--block/file-posix.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/file-posix.c b/block/file-posix.c
index 0d6e12f..0d85123 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -1573,7 +1573,7 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
int ret;
ret = hdev_get_pdiscard_alignment(&st, &dalign);
- if (ret == 0) {
+ if (ret == 0 && dalign != 0) {
uint32_t ralign = bs->bl.request_alignment;
/* Probably never happens, but handle it just in case */