| Message ID | 20210409094247.2129234-1-kleber.souza@canonical.com |
|---|---|
| Headers | show |
| Series | Fix boot failure on ppc64el (LP: #1922997) | expand |
Acked-by: Tim Gardner <tim.gardner@canonical.com> On 4/9/21 3:42 AM, Kleber Sacilotto de Souza wrote: > BugLink: https://bugs.launchpad.net/bugs/1922997 > > [Impact] > Enabling CONFIG_MODVERSIONS on xenial/linux-hwe (via rebase on bionic/linux, see > bug 1898716) is causing the kernel to fail booting on ppc64el as the modules > can't be loaded because of the mismatch of the module_layout symbol. > > [ 7.635173] raid0: disagrees about version of symbol module_layout > > [Fix] > The proposed fix is to disable CONFIG_MODVERSIONS and unset > CONFIG_SYSTEM_TRUSTED_KEYS via the 'local-mangle' script which gets called by > the 'open' script after the rebase. Making the changes directly on the config or > annotations file is not persistent as these files are synced from master. > > This is a temporary fix until the root cause can be found. > > [Test case] > Boot the kernel on a xenial ppc64el system. > > [Regression potential] > This config option has been enabled on Bionic to support rebuilding the lrm > modules without the need to rebuild the kernel. There are no lrm modules in > Xenial, so it should be safe to keep it disabled. > > Kleber Sacilotto de Souza (1): > UBUNTU: [Packaging] HWE: disable CONFIG_MODVERSIONS > > debian.hwe/scripts/helpers/local-mangle | 9 +++++++++ > 1 file changed, 9 insertions(+) > > --- > v2: > - Also unset CONFIG_SYSTEM_TRUSTED_KEYS > - Rework the sed regex'es to be less prolix and more robust >
On 09.04.21 11:42, Kleber Sacilotto de Souza wrote: > BugLink: https://bugs.launchpad.net/bugs/1922997 > > [Impact] > Enabling CONFIG_MODVERSIONS on xenial/linux-hwe (via rebase on bionic/linux, see > bug 1898716) is causing the kernel to fail booting on ppc64el as the modules > can't be loaded because of the mismatch of the module_layout symbol. > > [ 7.635173] raid0: disagrees about version of symbol module_layout > > [Fix] > The proposed fix is to disable CONFIG_MODVERSIONS and unset > CONFIG_SYSTEM_TRUSTED_KEYS via the 'local-mangle' script which gets called by > the 'open' script after the rebase. Making the changes directly on the config or > annotations file is not persistent as these files are synced from master. > > This is a temporary fix until the root cause can be found. > > [Test case] > Boot the kernel on a xenial ppc64el system. > > [Regression potential] > This config option has been enabled on Bionic to support rebuilding the lrm > modules without the need to rebuild the kernel. There are no lrm modules in > Xenial, so it should be safe to keep it disabled. > > Kleber Sacilotto de Souza (1): > UBUNTU: [Packaging] HWE: disable CONFIG_MODVERSIONS > > debian.hwe/scripts/helpers/local-mangle | 9 +++++++++ > 1 file changed, 9 insertions(+) > > --- > v2: > - Also unset CONFIG_SYSTEM_TRUSTED_KEYS > - Rework the sed regex'es to be less prolix and more robust > Applied to xenial/linux-hwe. Thanks, Kleber