From e7eadbb29fc54d8f450d3b0bc51814e9948a0e0d Mon Sep 17 00:00:00 2001 From: Collin Funk Date: Sat, 27 Sep 2025 17:28:47 -0700 Subject: [PATCH] Linux: Fix tst-copy_file_range-large test on recent kernels [BZ #33498] Instead of a negative return value the fixed FUSE copy_file_range will silently truncate the size to UINT_MAX & PAGE_MASK [1]. Allow that value to be returned as well. [1] https://github.com/torvalds/linux/commit/1e08938c3694f707bb165535df352ac97a8c75c9 Reviewed-by: H.J. Lu --- sysdeps/unix/sysv/linux/tst-copy_file_range-large.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c b/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c index 14fdf82953..9eafb8c425 100644 --- a/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c +++ b/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c @@ -170,7 +170,13 @@ test_size (struct support_fuse *f, off64_t size) FAIL_UNSUPPORTED ("copy_file_range not supported"); } - TEST_COMPARE (copied, size); + /* To avoid the negative return value in Linux versions 6.18 the size is + silently clamped to UINT_MAX & PAGE_MASK. Accept that return value + too. See: + . + */ + if (copied != size) + TEST_COMPARE (copied, UINT_MAX & ~(getpagesize () - 1)); xclose (dest_fd); xclose (source_fd); -- 2.47.3