Hello, Il giorno ven, 21/08/2020 alle 16.03 +0200, Christophe Leroy ha scritto: [...] > Thanks. > > The Oops in the video shows that the issue is at 0x1bcac and msr > value > shows that Instruction MMU is disabled. So this corresponds to > address > 0xc001bcac. In the vmlinux you sent me this address is in > power_save_ppc32_restore() > > This issue is fixed by > https://patchwork.ozlabs.org/project/linuxppc-dev/patch/7bce32ccbab3ba3e3e0f27da6961bf6313df97ed.1581663140.git.christophe.le...@c-s.fr/ > > > You also said in a previous mail that your original issue also > happens > when CONFIG_VMAP_STACK is not selected. The above bug being linked > to > CONFIG_VMAP_STACK, maybe it would be easier to bisect with > CONFIG_VMAP_STACK unselected.
I rebuilt the same kernel that I would otherwise have skipped because of the other bug, and it worked, indeed. I will continue my "bisect quest" unselecting VMAP_STACK in order to speed up the bisecting. Thank you very much, Giuseppe