On 9/28/22 11:01, Kees Cook wrote:
On Wed, Sep 28, 2022 at 10:47:39AM -0700, Florian Fainelli wrote:
From: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
To enable UBSAN on ARM, this patch enables ARCH_HAS_UBSAN_SANITIZE_ALL
from arm confiuration. Basic kernel bootup test is passed on arm with
CONFIG_UBSAN_SANITIZE_ALL enabled.
Signed-off-by: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
[florian: rebased against v6.0-rc7]
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Ah-ha, thanks for testing this. What devices did you check this on? I
know boot-up on arm32 can be very device-specific.
This was tested on an ARCH_BRCMSTB system which is using an ARMv8 CPU booted in AArch32 mode, so virtually equivalent to armv7l. A raspberry Pi 4B is also happily booting with it.
Which UBSAN configs did you try?
All CONFIG_UBSAN_* work with the exception of CONFIG_UBSAN_ALIGNMENT on my ARCH_BRCMSTB system, however it works fine on the Raspberry Pi 4B.
Florian
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature