On 10/09/23 08:04, Mike Kravetz wrote: > On 10/09/23 12:11, Konrad Dybcio wrote: > > On 9.10.2023 05:29, Mike Kravetz wrote: > > > On 10/06/23 15:35, Mike Kravetz wrote: > > >> On 10/06/23 23:39, Konrad Dybcio wrote: > > >>> On 6.10.2023 05:08, Mike Kravetz wrote: > > >>>> On 10/02/23 11:57, Konrad Dybcio wrote: > > >>>>> On 9/29/23 22:57, Mike Kravetz wrote: > > >>>>>> On 09/27/23 13:26, Konrad Dybcio wrote: > > >>>>>>> On 26.09.2023 01:48, Mike Kravetz wrote: > > > > I managed to get a boot log: > > > > https://pastebin.com/GwurpCw9 > > > > This is using arch/arm64/boot/dts/qcom/sm8550-mtp.dts for reference > > > > Early on in boot log before the panic, I see this in the log: > > [ 0.000000] efi: UEFI not found. > [ 0.000000] [Firmware Bug]: Kernel image misaligned at boot, please fix your bootloader! > > Isn't that misalignment pretty serious? Or, is is possible to run with that? > > There are no hugetlb pages allocated at boot time: > > [ 0.000000] Kernel command line: PMOS_NO_OUTPUT_REDIRECT console=ttyMSM0 earlycon clk_ignore_unused pd_ignore_unused androidboot.bootdevice=1d84000.ufshc androidboot.fstab_suffix=default androidboot.boot_devices=soc/1d84000.ufshc androidboot.serialno=ab855d8d androidboot.baseband=msm > > So, the routine where we are panic'ing (gather_bootmem_prealloc) should be a > noop. The first thing it does is: > list_for_each_entry(m, &huge_boot_pages, list) { > ... > } > > However, huge_boot_pages should be empty as initialized here: > __initdata LIST_HEAD(huge_boot_pages); > > At the end of the routine, we call prep_and_add_bootmem_folios to > process the local list created withing that above loop: > > LIST_HEAD(folio_list); > > This should also be empty and a noop. > > Is it possible that the misaligned kernel image could make these lists > appear as non-empty? Actually, just saw this: https://lore.kernel.org/linux-mm/20231009145605.2150897-1-usama.arif@xxxxxxxxxxxxx/ Will take a look, although as mentioned above prep_and_add_bootmem_folios on an empty list should be a noop. -- Mike Kravetz
