diff --git a/0001-file-Add-debugging-if-sync_file_range-posix_fadvise-.patch b/0001-file-Add-debugging-if-sync_file_range-posix_fadvise-.patch
new file mode 100644
index 0000000..57a1009
--- /dev/null
+++ b/0001-file-Add-debugging-if-sync_file_range-posix_fadvise-.patch
@@ -0,0 +1,41 @@
+From 96315050f6683c8834f8ac3ccaea33e8e58fb183 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Fri, 28 Mar 2025 20:32:46 +0000
+Subject: [PATCH] file: Add debugging if sync_file_range / posix_fadvise fails
+
+These are advisory hints, but add some debugging so we know if these
+calls are failing.  The errors are ignored so there is no behaviour
+change.
+
+Thanks: Eric Sandeen
+(cherry picked from commit feb22cfc85b0750a4e4bfbc5fe56636883599feb)
+---
+ plugins/file/file.c | 12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/plugins/file/file.c b/plugins/file/file.c
+index 52396bb2..77de1cc8 100644
+--- a/plugins/file/file.c
++++ b/plugins/file/file.c
+@@ -125,11 +125,13 @@ evict_writes (int fd, uint64_t offset, size_t len)
+ 
+   /* Evict the oldest window from the page cache. */
+   if (window[0].len > 0) {
+-    sync_file_range (window[0].fd, window[0].offset, window[0].len,
+-                     SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|
+-                     SYNC_FILE_RANGE_WAIT_AFTER);
+-    posix_fadvise (window[0].fd, window[0].offset, window[0].len,
+-                   POSIX_FADV_DONTNEED);
++    if (sync_file_range (window[0].fd, window[0].offset, window[0].len,
++                         SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|
++                         SYNC_FILE_RANGE_WAIT_AFTER) == -1)
++      nbdkit_debug ("sync_file_range: wait: (ignored): %m");
++    if (posix_fadvise (window[0].fd, window[0].offset, window[0].len,
++                       POSIX_FADV_DONTNEED) == -1)
++      nbdkit_debug ("posix_fadvise: POSIX_FADV_DONTNEED: (ignored): %m");
+   }
+ 
+   /* Move the Nth window to N-1. */
+-- 
+2.47.1
+
diff --git a/0001-rust-Disable-clippy-warnings-unless-enable-gcc-warni.patch b/0001-rust-Disable-clippy-warnings-unless-enable-gcc-warni.patch
deleted file mode 100644
index a8092e1..0000000
--- a/0001-rust-Disable-clippy-warnings-unless-enable-gcc-warni.patch
+++ /dev/null
@@ -1,92 +0,0 @@
-From 19c46bafab94716141a8e2ec9ade2f7dd47a6384 Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Wed, 5 Mar 2025 11:31:10 +0000
-Subject: [PATCH] rust: Disable clippy warnings unless --enable-gcc-warnings is
- used
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Turn ./configure --enable-gcc-warnings into a general "enable compiler
-warnings" option (we'll probably need to change the name of it later).
-Then use this option to control whether Rust clippy warnings are
-enabled or not.
-
-Note that CI generally enables this option so we should still see Rust
-errors in CI.
-
-Reported-by: Thomas Weißschuh
-(cherry picked from commit aa6b3a9954418659c5d27aae3ef3fe9005961510)
----
- configure.ac             | 14 +++++++++-----
- plugins/rust/Makefile.am |  5 ++++-
- 2 files changed, 13 insertions(+), 6 deletions(-)
-
-diff --git a/configure.ac b/configure.ac
-index c3ef3aff..ff4a4049 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -225,17 +225,20 @@ AS_IF([$CXX --version >&AS_MESSAGE_LOG_FD 2>&1],[have_cxx=yes],[have_cxx=no])
- AC_MSG_RESULT([$have_cxx])
- AM_CONDITIONAL([HAVE_CXX], [test "$have_cxx" = "yes"])
- 
-+dnl If --enable-gcc-warnings is used, then compiler warnings are
-+dnl turned on.  Despite the name this applies to GCC, Clang and
-+dnl Rust (clippy) warnings.
- AC_ARG_ENABLE([gcc-warnings],
-     [AS_HELP_STRING([--enable-gcc-warnings],
--                    [turn on lots of GCC warnings (for developers)])],
-+                    [turn on compiler warnings (for developers)])],
-      [case $enableval in
-       yes|no) ;;
-       *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
-       esac
--      gcc_warnings=$enableval],
--      [gcc_warnings=no]
-+      compiler_warnings=$enableval],
-+      [compiler_warnings=no]
- )
--if test "x$gcc_warnings" = "xyes"; then
-+if test "x$compiler_warnings" = "xyes"; then
-     WARNINGS_CFLAGS="-Wall -Wshadow -Wvla -Werror"
-     AC_SUBST([WARNINGS_CFLAGS])
- 
-@@ -251,8 +254,8 @@ if test "x$gcc_warnings" = "xyes"; then
-       [AC_MSG_RESULT([no])]
-     )
-     AC_SUBST([WARNINGS_MODULE_CXXFLAGS])
--
- fi
-+AM_CONDITIONAL([COMPILER_WARNINGS], [test "$compiler_warnings" = "yes"])
- 
- dnl Check if the compiler supports -std=c90 flag.  This is only used
- dnl during a test.  OpenBSD GCC does not support this flag so we skip
-@@ -1818,6 +1821,7 @@ echo
- echo "Other optional features:"
- echo
- feature "allocator=zstd"      test "x$HAVE_LIBZSTD_TRUE" = "x"
-+feature "compiler warnings"   test "x$COMPILER_WARNINGS_TRUE" = "x"
- feature "tests using libguestfs" \
-                               test "x$HAVE_LIBGUESTFS_TRUE" = "x" && \
-                               test "x$USE_LIBGUESTFS_FOR_TESTS_TRUE" = "x"
-diff --git a/plugins/rust/Makefile.am b/plugins/rust/Makefile.am
-index dc774e11..33f13107 100644
---- a/plugins/rust/Makefile.am
-+++ b/plugins/rust/Makefile.am
-@@ -81,9 +81,12 @@ endif
- TESTS = \
- 	cargo-tests.sh \
- 	test-ramdisk.sh \
--	clippy.sh \
- 	$(NULL)
- 
-+if COMPILER_WARNINGS
-+TESTS += clippy.sh
-+endif
-+
- if HAVE_POD
- 
- man_MANS = nbdkit-rust-plugin.3
--- 
-2.47.1
-
diff --git a/0002-file-If-sync_file_range-fails-to-start-don-t-add-win.patch b/0002-file-If-sync_file_range-fails-to-start-don-t-add-win.patch
new file mode 100644
index 0000000..ea2b05a
--- /dev/null
+++ b/0002-file-If-sync_file_range-fails-to-start-don-t-add-win.patch
@@ -0,0 +1,82 @@
+From 93e3804d42b5e6f4afcd7524eb07d776b56c883d Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Fri, 28 Mar 2025 20:35:54 +0000
+Subject: [PATCH] file: If sync_file_range fails to start, don't add window to
+ list
+
+When starting the process of writing out the newest range, we
+previously didn't check if sync_file_range succeeded or failed.  But
+if it failed there's no reason to add it to the list of windows.  Also
+debug any failures.
+
+This shouldn't change any semantics as far as we're aware.
+
+Thanks: Eric Sandeen
+(cherry picked from commit d35f0636373e6a58c8f3fcfcf505af248e27c574)
+---
+ plugins/file/file.c | 48 ++++++++++++++++++++++++++-------------------
+ 1 file changed, 28 insertions(+), 20 deletions(-)
+
+diff --git a/plugins/file/file.c b/plugins/file/file.c
+index 77de1cc8..0271a56b 100644
+--- a/plugins/file/file.c
++++ b/plugins/file/file.c
+@@ -123,27 +123,35 @@ evict_writes (int fd, uint64_t offset, size_t len)
+ {
+   ACQUIRE_LOCK_FOR_CURRENT_SCOPE (&window_lock);
+ 
+-  /* Evict the oldest window from the page cache. */
+-  if (window[0].len > 0) {
+-    if (sync_file_range (window[0].fd, window[0].offset, window[0].len,
+-                         SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|
+-                         SYNC_FILE_RANGE_WAIT_AFTER) == -1)
+-      nbdkit_debug ("sync_file_range: wait: (ignored): %m");
+-    if (posix_fadvise (window[0].fd, window[0].offset, window[0].len,
+-                       POSIX_FADV_DONTNEED) == -1)
+-      nbdkit_debug ("posix_fadvise: POSIX_FADV_DONTNEED: (ignored): %m");
+-  }
+-
+-  /* Move the Nth window to N-1. */
+-  memmove (&window[0], &window[1], sizeof window[0] * (NR_WINDOWS-1));
+-
+-  /* Set up the current window and tell Linux to start writing it out
+-   * to disk (asynchronously).
++  /* Tell Linux to start writing the current range out to disk
++   * (asynchronously).
+    */
+-  sync_file_range (fd, offset, len, SYNC_FILE_RANGE_WRITE);
+-  window[NR_WINDOWS-1].fd = fd;
+-  window[NR_WINDOWS-1].offset = offset;
+-  window[NR_WINDOWS-1].len = len;
++  if (sync_file_range (fd, offset, len, SYNC_FILE_RANGE_WRITE) == -1) {
++    /* sync_file_range to start the write failed */
++    nbdkit_debug ("sync_file_range: write: (ignored): %m");
++  }
++  else {
++    /* sync_file_range to start the write succeeded, so
++     * evict the oldest window from the page cache.
++     */
++    if (window[0].len > 0) {
++      if (sync_file_range (window[0].fd, window[0].offset, window[0].len,
++                           SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|
++                           SYNC_FILE_RANGE_WAIT_AFTER) == -1)
++        nbdkit_debug ("sync_file_range: wait: (ignored): %m");
++      if (posix_fadvise (window[0].fd, window[0].offset, window[0].len,
++                         POSIX_FADV_DONTNEED) == -1)
++        nbdkit_debug ("posix_fadvise: POSIX_FADV_DONTNEED: (ignored): %m");
++    }
++
++    /* Move the Nth window to N-1. */
++    memmove (&window[0], &window[1], sizeof window[0] * (NR_WINDOWS-1));
++
++    /* Add the range to the newest end of the list of windows. */
++    window[NR_WINDOWS-1].fd = fd;
++    window[NR_WINDOWS-1].offset = offset;
++    window[NR_WINDOWS-1].len = len;
++  }
+ }
+ 
+ /* When we close the handle we must remove any windows which are still
+-- 
+2.47.1
+
diff --git a/0003-tests-Add-tests-of-file-plugin-cache-none.patch b/0003-tests-Add-tests-of-file-plugin-cache-none.patch
new file mode 100644
index 0000000..606ba90
--- /dev/null
+++ b/0003-tests-Add-tests-of-file-plugin-cache-none.patch
@@ -0,0 +1,254 @@
+From ecd719d5ab101e54cab496085b827a485c9398e6 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Sat, 29 Mar 2025 10:01:05 +0000
+Subject: [PATCH] tests: Add tests of file plugin cache=none
+
+These are based on the tests which were done in the commit message
+when the feature was first added in commit aa5a2183a6, but cleaned up
+and modernised a little.
+
+It is likely that these tests would fail under memory pressure (since
+they test that the page cache is used vs not used).  Making them more
+robust left as an exercise for the future.
+
+(cherry picked from commit 6017ba21aeeb3d7ad85925e78dba85a005194dee)
+---
+ README.md                           |  1 +
+ tests/Makefile.am                   |  4 ++
+ tests/test-file-cache-none-read.sh  | 90 ++++++++++++++++++++++++++++
+ tests/test-file-cache-none-write.sh | 92 +++++++++++++++++++++++++++++
+ 4 files changed, 187 insertions(+)
+ create mode 100755 tests/test-file-cache-none-read.sh
+ create mode 100755 tests/test-file-cache-none-write.sh
+
+diff --git a/README.md b/README.md
+index 5d61e786..2f5123c9 100644
+--- a/README.md
++++ b/README.md
+@@ -179,6 +179,7 @@ To test for memory leaks (`make check-valgrind`):
+ 
+ For non-essential enhancements to the test suite:
+ 
++* cachedel, cachestats (from https://github.com/Feh/nocache)
+ * expect
+ * fdisk, sfdisk (from util-linux)
+ * flake8
+diff --git a/tests/Makefile.am b/tests/Makefile.am
+index 7376c948..e8003c1c 100644
+--- a/tests/Makefile.am
++++ b/tests/Makefile.am
+@@ -899,6 +899,8 @@ TESTS += \
+ 	test-file-extents.sh \
+ 	test-file-dir.sh \
+ 	test-file-dirfd.sh \
++	test-file-cache-none-read.sh \
++	test-file-cache-none-write.sh \
+ 	$(NULL)
+ EXTRA_DIST += \
+ 	test-file.sh \
+@@ -908,6 +910,8 @@ EXTRA_DIST += \
+ 	test-file-extents.sh \
+ 	test-file-dir.sh \
+ 	test-file-dirfd.sh \
++	test-file-cache-none-read.sh \
++	test-file-cache-none-write.sh \
+ 	$(NULL)
+ LIBGUESTFS_TESTS += test-file-block
+ LIBNBD_TESTS += test-file-block-nbd
+diff --git a/tests/test-file-cache-none-read.sh b/tests/test-file-cache-none-read.sh
+new file mode 100755
+index 00000000..c9831b43
+--- /dev/null
++++ b/tests/test-file-cache-none-read.sh
+@@ -0,0 +1,90 @@
++#!/usr/bin/env bash
++# nbdkit
++# Copyright Red Hat
++#
++# Redistribution and use in source and binary forms, with or without
++# modification, are permitted provided that the following conditions are
++# met:
++#
++# * Redistributions of source code must retain the above copyright
++# notice, this list of conditions and the following disclaimer.
++#
++# * Redistributions in binary form must reproduce the above copyright
++# notice, this list of conditions and the following disclaimer in the
++# documentation and/or other materials provided with the distribution.
++#
++# * Neither the name of Red Hat nor the names of its contributors may be
++# used to endorse or promote products derived from this software without
++# specific prior written permission.
++#
++# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
++# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
++# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
++# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++# SUCH DAMAGE.
++
++# Test the file plugin, reading with cache=none.
++
++source ./functions.sh
++set -e
++set -x
++
++# Makes no sense to run this test under valgrind.
++skip_if_valgrind
++
++requires_plugin file
++requires_run
++requires_nbdcopy
++requires $TRUNCATE --version
++requires test -r /dev/urandom
++requires dd --version
++requires $SED --version
++
++# Requires the cachestats tool from https://github.com/Feh/nocache
++# It doesn't support --version or --help, so use 'type' instead.
++requires type cachestats
++requires type cachedel
++
++inp=file-cache-none-read.in
++stats1=file-cache-none-read.s1
++stats2=file-cache-none-read.s2
++rm -f $inp $stats1 $stats2
++cleanup_fn rm -f $inp $stats1 $stats2
++
++# Create a large random file as input.
++dd if=/dev/urandom of=$inp bs=1024k count=1024
++
++# Drop the input file from the page cache and read it out with nbdkit.
++# We expect to see the input file mostly or completely in cache after.
++cachedel $inp
++nbdkit file $inp --run 'nbdcopy "$uri" null:'
++cachestats $inp > $stats1
++cat $stats1
++
++# The same, with cache=none.
++# We expect to see the input file not cached after.
++cachedel $inp
++nbdkit file $inp --run 'nbdcopy "$uri" null:' cache=none
++cachestats $inp > $stats2
++cat $stats2
++
++# The output of cachestats looks like this:
++# pages in cache: 262144/262144 (100.0%)  [filesize=1048576.0K, pagesize=4K]
++# We want to check that % pages in cache using cache=none is much
++# lower than the default case.
++pic1="$($SED 's,pages in cache: [0-9/]* (\([0-9]*\)\.[0-9]*%).*,\1,' \
++             < $stats1)"
++pic2="$($SED 's,pages in cache: [0-9/]* (\([0-9]*\)\.[0-9]*%).*,\1,' \
++             < $stats2)"
++
++# Test before is > 10%
++test "$pic1" -gt 10
++# Test after is < 10%
++test "$pic2" -lt 10
+diff --git a/tests/test-file-cache-none-write.sh b/tests/test-file-cache-none-write.sh
+new file mode 100755
+index 00000000..2041a5cd
+--- /dev/null
++++ b/tests/test-file-cache-none-write.sh
+@@ -0,0 +1,92 @@
++#!/usr/bin/env bash
++# nbdkit
++# Copyright Red Hat
++#
++# Redistribution and use in source and binary forms, with or without
++# modification, are permitted provided that the following conditions are
++# met:
++#
++# * Redistributions of source code must retain the above copyright
++# notice, this list of conditions and the following disclaimer.
++#
++# * Redistributions in binary form must reproduce the above copyright
++# notice, this list of conditions and the following disclaimer in the
++# documentation and/or other materials provided with the distribution.
++#
++# * Neither the name of Red Hat nor the names of its contributors may be
++# used to endorse or promote products derived from this software without
++# specific prior written permission.
++#
++# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
++# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
++# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
++# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++# SUCH DAMAGE.
++
++# Test the file plugin, writing with cache=none.
++
++source ./functions.sh
++set -e
++set -x
++
++# Makes no sense to run this test under valgrind.
++skip_if_valgrind
++
++requires_plugin file
++requires_run
++requires_nbdcopy
++requires $TRUNCATE --version
++requires test -r /dev/urandom
++requires dd --version
++requires $SED --version
++
++# Requires the cachestats tool from https://github.com/Feh/nocache
++# It doesn't support --version or --help, so use 'type' instead.
++requires type cachestats
++
++inp=file-cache-none-write.in
++out=file-cache-none-write.out
++stats1=file-cache-none-write.s1
++stats2=file-cache-none-write.s2
++rm -f $inp $out $stats1 $stats2
++cleanup_fn rm -f $inp $out $stats1 $stats2
++
++# Create a large random file as input.
++dd if=/dev/urandom of=$inp bs=1024k count=1024
++
++# Copy to output using cache=default and collect the stats.
++# We expect to see the output file mostly or completely in cache after.
++rm -f $out; truncate -r $inp $out
++export inp
++nbdkit file $out --run 'nbdcopy $inp "$uri"' cache=default
++cachestats $out > $stats1
++cat $stats1
++
++# The same, with cache=none.
++# We expect to see the output file not cached after.
++rm -f $out; truncate -r $inp $out
++export inp
++nbdkit file $out --run 'nbdcopy $inp "$uri"' cache=none
++cachestats $out > $stats2
++cat $stats2
++
++# The output of cachestats looks like this:
++# pages in cache: 262144/262144 (100.0%)  [filesize=1048576.0K, pagesize=4K]
++# We want to check that % pages in cache using cache=none is much
++# lower than the default case.
++pic1="$($SED 's,pages in cache: [0-9/]* (\([0-9]*\)\.[0-9]*%).*,\1,' \
++             < $stats1)"
++pic2="$($SED 's,pages in cache: [0-9/]* (\([0-9]*\)\.[0-9]*%).*,\1,' \
++             < $stats2)"
++
++# Test before is > 10%
++test "$pic1" -gt 10
++# Test after is < 10%
++test "$pic2" -lt 10
+-- 
+2.47.1
+
diff --git a/nbdkit.spec b/nbdkit.spec
index 8e2487e..49f1144 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -54,7 +54,7 @@
 %global source_directory 1.42-stable
 
 Name:           nbdkit
-Version:        1.42.1
+Version:        1.42.2
 Release:        1%{?dist}
 Summary:        NBD server
 
@@ -80,7 +80,9 @@ Source3:        copy-patches.sh
 # https://gitlab.com/nbdkit/nbdkit/-/commits/rhel-10.1/
 
 # Patches.
-Patch0001:     0001-rust-Disable-clippy-warnings-unless-enable-gcc-warni.patch
+Patch0001:     0001-file-Add-debugging-if-sync_file_range-posix_fadvise-.patch
+Patch0002:     0002-file-If-sync_file_range-fails-to-start-don-t-add-win.patch
+Patch0003:     0003-tests-Add-tests-of-file-plugin-cache-none.patch
 
 # For automatic RPM Provides generation.
 # See: https://rpm-software-management.github.io/rpm/manual/dependency_generators.html
@@ -1523,12 +1525,14 @@ fi
 
 
 %changelog
-* Mon Mar 10 2025 Richard W.M. Jones <rjones@redhat.com> - 1.42.1-1
-- Rebase to nbdkit 1.42.1
+* Mon Mar 31 2025 Richard W.M. Jones <rjones@redhat.com> - 1.42.2-1
+- Rebase to nbdkit 1.42.2
 - Synch the spec file with Fedora Rawhide.
 - nbdkit-ondemand-plugin moves into a new subpackage.
 - New nbdkit-time-limit-filter.
-- resolves: RHEL-78830
+  resolves: RHEL-78830
+- Add extra system call checking and debugging to nbdkit-file-plugin
+  resolves: RHEL-85515
 
 * Mon Jan 06 2025 Richard W.M. Jones <rjones@redhat.com> - 1.40.4-3
 - vddk: Avoid reading partial chunk beyond the end of the disk
diff --git a/sources b/sources
index 84f3c10..cf82f3e 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.42.1.tar.gz) = ff6b171c6e73eb9bec70ef0f565dc16add72dfbef29db147fa639fd0b443a9fe0f72d5f832b1eb8f397d62d66660fb825e29b0314ec9d6670aa1a7aa9c1dbc3d
-SHA512 (nbdkit-1.42.1.tar.gz.sig) = 20e1059cdb0d53aeac066e81ee92c49c58cec65dce928f3e11c0213c4e7a9700fa73f2b990efa974be5afc877d2082f85e40e511001ba5e971faa51c9247ec2b
+SHA512 (nbdkit-1.42.2.tar.gz) = 007040b1a6e4653353305646af784aece194d6e8b66ce645774015a72ffb8863e70919fc13ec2b66bb762d7c963d5cbed02ac26b803b1202eff1a4183470ada3
+SHA512 (nbdkit-1.42.2.tar.gz.sig) = 8d356481c1005dc9d566e3de1ff9b695ae1c50182ebf4913476a6a15e7ad6ae2f529caef712b2a4156eda539236ba8f20896c335de27c91ef734d83ccc132050