From: Jens Axboe <axboe@kernel.dk>
Date: Tue, 14 Mar 2023 19:58:13 +0000 (-0600)
Subject: t/io_uring: avoid truncation of offset on 32-bit builds
X-Git-Tag: fio-3.35~56
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=4d9521fd4d679f914ccf425f6c06864484352fea;p=fio.git

t/io_uring: avoid truncation of offset on 32-bit builds

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/t/io_uring.c b/t/io_uring.c
index 1ea0a9da..d39d7924 100644
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -530,8 +530,11 @@ static unsigned long long get_offset(struct submitter *s, struct file *f)
 	long r;
 
 	if (random_io) {
+		unsigned long long block;
+
 		r = __rand64(&s->rand_state);
-		offset = (r % (f->max_blocks - 1)) * bs;
+		block = r % f->max_blocks;
+		offset = block * (unsigned long long) bs;
 	} else {
 		offset = f->cur_off;
 		f->cur_off += bs;