On Tue, Mar 25, 2025 at 12:40:16AM -0700, Nicolin Chen wrote: > > On Tue, Mar 25, 2025 at 05:39:39AM +0000, Borah, Chaitanya Kumar wrote: > > Hello Nicolin, > > > > Hope you are doing well. I am Chaitanya from the linux graphics team in > > Intel. > > > > This mail is regarding a regression we are seeing in our CI runs[1] on > > linux-next repository. > > > > Since the version next-20250321 [2], we are seeing the following regression > > > > ````````````````````````````````````````````````````````````````````````````````` > > <4>[ 0.226495] Unpatched return thunk in use. This should not happen! > > <4>[ 0.226502] WARNING: CPU: 0 PID: 1 at arch/x86/kernel/cpu/bugs.c:3107 > > __warn_thunk+0x62/0x70 > > Hmm....I wonder why x86 can be affected...
I wonder if this is realted to the objtool warning Steven reported: https://lore.kernel.org/linux-next/[email protected]/ vmlinux.o: warning: objtool: iommu_dma_get_msi_page() falls through to next function __iommu_dma_unmap() I have no idea what either error means or how to fix it. AFAICT there is nothing special about this patch to trigger this? +Peter & Josh Jason
