On Fri, 2025-02-21 at 21:03 +0100, Salvatore Bonaccorso wrote: > > > > > Essentially this has to do with ftrace and weak functions. > > As I understand this is still an issue in 6.12.15-1. >
That's correct; 6.12.15 should still be impacted, as long as CONFIG_X86_KERNEL_IBT is set. CONFIG_X86_KERNEL_IBT changes the function prologue in a way that causes this issue when combined with an certain fentry bug. I confirmed this issue is fixed with this patch series: https://lore.kernel.org/bpf/20250218195918.255228...@goodmis.org/ Since that fixes the underlying fentry bug. I would guess that series will merge into 6.15, but we'll have to see.
