[pve-devel] [RFC pve-kernel 1/2] d/rules: kconfig: disable CONFIG_UBSAN

Stoiko Ivanov s.ivanov at proxmox.com
Mon May 30 20:38:46 CEST 2022


While UBSAN helps in improving the kernel codebase, and with the
current config (CONFIG_UBSAN_TRAP is disabled), UBSAN should only
print warnings and not panic, it still can look scary to users, who
are upgrading from the previous kernel series (5.13/ubuntu-impish had
UBSAN disabled, it got reenabled with 5.15.0-14.14/
ddcf9715e1d13cea21ac90014f848e0c4c0ad23c last December)

based on reports about UBSAN warnings in our community-forum:
https://forum.proxmox.com/threads/.110097/
https://forum.proxmox.com/threads/.109368/

Signed-off-by: Stoiko Ivanov <s.ivanov at proxmox.com>
---
 debian/rules | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index 1ec1147..d6e4fe9 100755
--- a/debian/rules
+++ b/debian/rules
@@ -83,7 +83,8 @@ PVE_CONFIG_OPTS= \
 -d CONFIG_SECURITY_LOCKDOWN_LSM \
 -d CONFIG_SECURITY_LOCKDOWN_LSM_EARLY \
 --set-str CONFIG_LSM yama,integrity,apparmor \
--e CONFIG_PAGE_TABLE_ISOLATION
+-e CONFIG_PAGE_TABLE_ISOLATION \
+-d CONFIG_UBSAN
 
 debian/control: $(wildcard debian/*.in)
 	sed -e 's/@@KVNAME@@/${KVNAME}/g' < debian/pve-kernel.prerm.in > debian/${PVE_KERNEL_PKG}.prerm
-- 
2.30.2





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