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QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Peter Maydell 77dc9d662f tests/tcg/multiarch/linux/linux-test: Don't try to test atime update The linux-test test includes an attempt to check the utime and stat syscalls by setting the atime and mtime of a file to specific values, and then calling stat() to check that the values read back correctly. Unfortunately this is flaky, as it will fail if some other process (for instance a virus scanner, backup program, etc) gets in and reads the file between the utime() and stat() call, resulting in a host syscall sequence like this: utimensat(AT_FDCWD, "file2", [{tv_sec=1001, tv_nsec=0} /* 1970-01-01T01:16:41+0100 /, {tv_sec=1000, tv_nsec=0} / 1970-01-01T01:16:40+0100 /], 0) = 0 # successfully set atime to 1001 and mtime to 1000 statx(AT_FDCWD, "file2", AT_STATX_SYNC_AS_STAT\|AT_NO_AUTOMOUNT, STATX_BASIC_STATS, {stx_mask=STATX_BASIC_STATS\|STATX_MNT_ID, stx_blksize=4096, stx_attributes=0, stx_nlink=1, stx_uid=32808, stx_gid=32808, stx_mode=S_IFREG\|0600, stx_ino=21659016, stx_size=100, stx_blocks=8, stx_attributes_mask=STATX_ATTR_COMPRESSED\|STATX_ATTR_IMMUTABLE\| STATX_ATTR_APPEND\|STATX_ATTR_NODUMP\|STATX_ATTR_ENCRYPTED\| STATX_ATTR_AUTOMOUNT\|STATX_ATTR_MOUNT_ROOT\|STATX_ATTR_VERITY\| STATX_ATTR_DAX, stx_atime={tv_sec=1760091862, tv_nsec=63509009} / 2025-10-10T11:24:22.063509009+0100 /, stx_ctime={tv_sec=1760091862, tv_nsec=63509009} / 2025-10-10T11:24:22.063509009+0100 /, stx_mtime={tv_sec=1000, tv_nsec=0} / 1970-01-01T01:16:40+0100 */, stx_rdev_major=0, stx_rdev_minor=0, stx_dev_major=252, stx_dev_minor=0, stx_mnt_id=0x1f}) = 0 # but when we statx the file, we get back an mtime of 1000 # but an atime corresponding to when the other process read it and which will cause the test program to fail with the error message "stat time". In theory we could defend against this by e.g. operating on files in a dummy loopback mount filesystem which we mounted as 'noatime', but this isn't worth the hassle. Just drop the check on atime. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20251016150357.876415-4-alex.bennee@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>		6 months ago
..
linux-madvise.c	tests/tcg: Extend file in linux-madvise.c	2 years ago
linux-shmat-maps.c	tests/tcg: Check that shmat() does not break /proc/self/maps	2 years ago
linux-shmat-null.c	tests/tcg: Test shmat(NULL)	2 years ago
linux-sigrtminmax.c	tests/tcg: Add SIGRTMIN/SIGRTMAX test	1 year ago
linux-test.c	tests/tcg/multiarch/linux/linux-test: Don't try to test atime update	5 months ago
test-vma.c	tests/tcg: mark test-vma as a linux-only test	1 year ago