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11b767d110
When spawning a new container (via clone()) we allocate stack for
lxcContainerChild(). So far, we allocate 4 pages for the stack
and this used to be enough until we started rewriting everything
to glib. With glib we switched to g_strerror() which localizes
errno strings and thus increases stack usage, while the
previously used strerror_r() was more compact.
Fortunately, the solution is easy - just increase how much stack
the child can use (16 pages ought to be enough for anybody).
And while at it, lets use mmap() for allocation which offer some
nice features:
MAP_STACK - align allocation to be suitable for stack (even
though, currently ignored on Linux),
MAP_GROWSDOWN - kernel guards out of bounds access from child
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/511
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
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| .. | ||
| libvirtd_lxc.aug | ||
| lxc_cgroup.c | ||
| lxc_cgroup.h | ||
| lxc_conf.c | ||
| lxc_conf.h | ||
| lxc_container.c | ||
| lxc_container.h | ||
| lxc_controller.c | ||
| lxc_domain.c | ||
| lxc_domain.h | ||
| lxc_driver.c | ||
| lxc_driver.h | ||
| lxc_fuse.c | ||
| lxc_fuse.h | ||
| lxc_hostdev.c | ||
| lxc_hostdev.h | ||
| lxc_monitor_protocol.x | ||
| lxc_monitor.c | ||
| lxc_monitor.h | ||
| lxc_native.c | ||
| lxc_native.h | ||
| lxc_process.c | ||
| lxc_process.h | ||
| lxc.conf | ||
| meson.build | ||
| test_libvirtd_lxc.aug.in | ||
| virtlxcd.init.in | ||
| virtlxcd.service.in | ||