The shadow_get function does't consider the case that
'shadow is inpace', and after the shadow->data be set to the data,
it will not be the pointer. This patch fix it.
Signed-off-by: Li Bin <huawei.libin@huawei.com>
examples/tcp_cubic-better-follow-cubic-curve-original.patch is the
original patch, combined from two mainline commits (see the description
in the patch). It cannot be used with Kpatch as it is because the
change is in the initialization of a global structure.
examples/tcp_cubic-better-follow-cubic-curve-converted.patch is a
modification of the patch that Kpatch can process. Still, this
modification has its issues, see the description there.
Signed-off-by: Evgenii Shatokhin <eshatokhin@odin.com>
If a static variable is a pointer, it has rela section.
Example:
static int *p = &a;
changed to:
static int *p = &b;
so its rela section has changed.
Then this change of data should be found and report error.
But if we don't correlate its rela section, we won't
find this change.
Signed-off-by: Zhou ChengMing <zhouchengming1@outlook.com>
kpatch-build was failing on centos7 with
mv: cannot stat '/home/vagrant/rpmbuild/BUILD/kernel-*/linux-3.10.0-229.el7.x86_64': No such file or directory
in the error log. This was due to the actual directory being named
linux-3.10.0-229.el7.centos.x86_64. This patch avoids this failure by
adding a wildcard before the arch.
Signed-off-by: Louis Taylor <louis@kragniz.eu>
Change the supported Fedora version to F21 and add a new dependency.
For some reason, numactl-devel is needed by "rpmbuild -bp kernel", but
isn't detected by "yum-builddep kernel".
Remove the dracut support for adding the kpatch modules to the
initramfs. This creates a sizeable delay in installation time and
doesn't offer any added protect over just applying the patches at boot
time using a systemd service. Additional, we are seeing more platforms,
namely atomic and netboot environments, where changing the initramfs
can't be done.
Signed-off-by: Seth Jennings <sjenning@redhat.com>
Adds a new patch module scaffold for use when building against a kernel
with CONFIG_LIVE_PATCHING=y.
Signed-off-by: Seth Jennings <sjenning@redhat.com>
Use "inst" instead of "inst_symlink" for insmod, since insmod might not
necessarily be a symlink on some distros. inst_symlink is functionally
the same as inst, with an additional check to make sure that it's a
symlink (which we don't care about either way).
The "kpatch install" command is broken because the kpatch script has
some missing dependencies in the initramfs. Make sure the new
dependencies (readelf and awk) are added to the initramfs.
Unload of kpatch module (and kpatch_shadow_hash table) before
all shadow variables free requests are processed can lead to
kernel crash.
Add rcu_barrier() to kpatch_exit() to wait for all outstanding
RCU callbacks to complete.
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Bash doesn't correctly format the version string which causes the source
package to not be downloaded correctly.
Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
