Accepting request 236915 from home:jeff_mahoney:branches:Base:System
- Add option to warn if unsupported modules are added to the initramfs
- Enable this option for 'make install' when a kernel with
CONFIG_SUSE_KERNEL_SUPPORTED enabled is used. (bnc#882332)
- Add dracut-check-supported.patch
OBS-URL: https://build.opensuse.org/request/show/236915
OBS-URL: https://build.opensuse.org/package/show/Base:System/dracut?expand=0&rev=159
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Hannes Reinecke
Git OBS Bridge
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113
dracut-check-supported.patch
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113
dracut-check-supported.patch
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@ -0,0 +1,113 @@
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From: Jeff Mahoney <jeffm@suse.com>
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Subject: dracut: add warning when including unsupported modules
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References: bnc#882332
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Patch-mainline: probably never
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With self-built kernels (often used for debugging by both internal and
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external development), it's a common mistake to not set up
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Module.supported properly. As a result, modules can end up without the
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supported tag. "make install" will happily build an initramfs, via
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dracut, that will not boot due to the kernel refusing to load the
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unsupported modules.
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This patch adds a --check-supported option to check whether all modules
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added to the initramfs are marked supported and warn if they are not.
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It will not cause the initramfs creation to fail.
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The option is intended to be called via /sbin/installkernel, which will
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check to see if the kernel has CONFIG_SUSE_KERNEL_SUPPORTED before using
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the option.
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Signed-off-by: Jeff Mahoney <jeffm@suse.com>
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---
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dracut-functions.sh | 21 +++++++++++++++++++++
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dracut.8 | 5 +++++
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dracut.sh | 5 +++++
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3 files changed, 31 insertions(+)
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--- a/dracut-functions.sh
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+++ b/dracut-functions.sh
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@@ -1400,6 +1400,17 @@ for_each_module_dir() {
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done
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}
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+check_supported_kmod() {
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+ kmod=$1
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+ supported=$(modinfo -k $kernel -F supported $kmod 2>/dev/null)
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+ case "$supported" in
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+ yes|external) ;;
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+ *) dwarn "Module \"$(basename $kmod)\" is unsupported. This may cause" \
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+ "problems while booting." ;;
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+ esac
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+}
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+
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+
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# Install a single kernel module along with any firmware it may require.
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# $1 = full path to kernel module to install
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install_kmod_with_fw() {
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@@ -1462,6 +1473,10 @@ install_kmod_with_fw() {
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fi
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fi
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done
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+
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+ if [[ "$check_supported" = "yes" ]]; then
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+ check_supported_kmod $1
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+ fi
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return 0
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}
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@@ -1508,6 +1523,12 @@ dracut_kernel_post() {
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inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
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done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
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fi
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+
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+ if [[ $check_supported ]]; then
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+ while read _modpath; do
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+ check_supported_kmod $_modpath
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+ done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
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+ fi
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) &
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_pid=$(jobs -p | while read a ; do printf ":$a";done)
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_pid=${_pid##*:}
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--- a/dracut.8
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+++ b/dracut.8
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@@ -1855,6 +1855,11 @@ Print out the module install size
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.RS 4
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Regenerate all initramfs images at the default location with the kernel versions found on the system\&. Additional parameters are passed through\&.
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.RE
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+.PP
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+\fB\-\-check\-supported\fR
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+.RS 4
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+The kernel may be configured to check whether a module is supported by the vendor before allowing it to be loaded. On these systems, it's possible to generate an initramfs image that will fail to boot due to unsupported modules being refused. This option enables a check that will issue a warning if a module built without the support option enabled is encountered while building the image. Use of this option assumes that the kernel requires supported modules and will issue a warning on every module if used otherwise.
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+.RE
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.SH "FILES"
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.PP
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\fI/var/log/dracut\&.log\fR
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--- a/dracut.sh
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+++ b/dracut.sh
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@@ -193,6 +193,9 @@ Creates initial ramdisk images for prelo
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--printsize Print out the module install size
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--sshkey [SSHKEY] Add ssh key to initramfs (use with ssh-client module)
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--logfile [FILE] Logfile to use (overrides configuration setting)
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+ --check-supported Check to ensure that modules are marked supported when
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+ using a kernel that is configured to check the
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+ support status of a module before loading.
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If [LIST] has multiple arguments, then you have to put these in quotes.
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@@ -374,6 +377,7 @@ rearrange_params()
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--long noimageifnotneeded \
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--long early-microcode \
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--long no-early-microcode \
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+ --long check-supported \
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-- "$@")
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if (( $? != 0 )); then
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@@ -557,6 +561,7 @@ while :; do
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--printsize) printsize="yes";;
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--regenerate-all) regenerate_all="yes";;
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--noimageifnotneeded) noimageifnotneeded="yes";;
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+ --check-supported) check_supported="yes" ;;
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--) shift; break;;
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@ -63,6 +63,14 @@ fi
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cp -fp $BOOTIMAGE $INSTALL_PATH/$BOOTFILE-$KERNEL_VERSION
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cp -fp $MAPFILE $INSTALL_PATH/System.map-$KERNEL_VERSION
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CONFIG=$(dirname $MAPFILE)/.config
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CHECK_SUPPORTED=
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if [ -e "$CONFIG" ]; then
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if grep -q "^CONFIG_SUSE_KERNEL_SUPPORTED=y" $CONFIG ; then
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CHECK_SUPPORTED="--check-supported"
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fi
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fi
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KERNTYPES=$(dirname $MAPFILE)/init/kerntypes.o
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if [ -e $KERNTYPES ]; then
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cp -fp $KERNTYPES $INSTALL_PATH/Kerntypes-$KERNEL_VERSION
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@ -85,8 +93,8 @@ esac
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# Generate initial ramdisk
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#
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if [ -x /usr/bin/dracut -a -d /lib/modules/$KERNEL_VERSION ]; then
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/usr/bin/dracut --hostonly --force $INSTALL_PATH/initrd-$KERNEL_VERSION \
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$KERNEL_VERSION
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/usr/bin/dracut --hostonly --force $CHECK_SUPPORTED \
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$INSTALL_PATH/initrd-$KERNEL_VERSION $KERNEL_VERSION
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else
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echo "You may need to create an initial ramdisk now."
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fi
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@ -1,3 +1,11 @@
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-------------------------------------------------------------------
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Wed Jun 11 18:17:34 UTC 2014 - jeffm@suse.com
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- Add option to warn if unsupported modules are added to the initramfs
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- Enable this option for 'make install' when a kernel with
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CONFIG_SUSE_KERNEL_SUPPORTED enabled is used. (bnc#882332)
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- Add dracut-check-supported.patch
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-------------------------------------------------------------------
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Wed Jun 11 12:49:44 UTC 2014 - meissner@suse.com
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@ -82,8 +82,8 @@ Patch53: 0053-01fips-fixup-loading-issues.patch
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Patch54: 0054-95iscsi-update-commandline-printing.patch
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Patch55: 0055-95fcoe-Only-install-fcoe-module-if-required.patch
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Patch56: 0056-81cio_ignore-handle-cio_ignore-commandline.patch
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Patch57: more-fips-adjustments.patch
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Patch58: dracut-check-supported.patch
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BuildRequires: asciidoc
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BuildRequires: bash
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@ -182,6 +182,7 @@ and its cryptography during startup.
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%patch55 -p1
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%patch56 -p1
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%patch57 -p1
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%patch58 -p1
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%build
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%configure\
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