io_uring: fix fdinfo sqe offsets calculation

Only with the big sqe feature they take 128 bytes per entry, but we unconditionally advance by 128B. Fix it by using sq_shift. Fixes: 3b8fdd1 ("io_uring/fdinfo: fix sqe dumping for IORING_SETUP_SQE128") Reported-and-tested-by: [email protected] Signed-off-by: Pavel Begunkov <[email protected]> Link: https://lore.kernel.org/r/8b41287cb75d5efb8fcb5cccde845ddbbadd8372.1665449983.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <[email protected]>
josf · Oct 12, 2022 · 0092793 · 0092793
1 parent c86416c
commit 0092793
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/io_uring/fdinfo.c b/io_uring/fdinfo.c
@@ -94,7 +94,7 @@ static __cold void __io_uring_show_fdinfo(struct io_ring_ctx *ctx,
 		sq_idx = READ_ONCE(ctx->sq_array[entry & sq_mask]);
 		if (sq_idx > sq_mask)
 			continue;
-		sqe = &ctx->sq_sqes[sq_idx << 1];
+		sqe = &ctx->sq_sqes[sq_idx << sq_shift];
 		seq_printf(m, "%5u: opcode:%s, fd:%d, flags:%x, off:%llu, "
 			      "addr:0x%llx, rw_flags:0x%x, buf_index:%d "
 			      "user_data:%llu",