On 5/22/21 12:08 PM, Hritik Vijay wrote: > Hello all > > I've been trying to compile and run 5.13.0-rc2-next-20210521 from > linux-next. It compiles successfully but when I boot it, I get an error > saying "failed to start load kernel modules". At this point, the > keyboard becomes unresponsive so I am unable to dig any further. > I used the config that comes with Archlinux kernel plus the default > choice to any new option. I've attached it to this mail. > I generated the initramfs using mkinitcpio (30-1) script, the configuration to > which I've attached as well. > My host computer has an encrypted luks volume which contains lvm which > in turn contains all the filesystems (including /). > The kernel boot options I used to boot my system is: > initrd /initramfs.img > initrd /intel-ucode.img > options rd.luks.name=500ac0a9-69ab-48f4-ab29-26328b206a7f=sherlocked root=/dev/sherlock/root rootflags=discard intel_iommu=on iommu=pt vfio-pci.ids=8086:3166,8086:4210 > > The same configuration works perfectly with the stable kernel. > > In order to investigate further, I booted the same kernel image inside a > virtual machine. I used the same initramfs and copied over /lib/modules/5.13.0-rc2-next-20210521 > in the virtual machine. This time I was able to interact with the > initramfs shell using the serial console. > Here is the dmesg from inside the virtual machine: > > [rootfs ]# dmesg [snip] > [ 0.703422] Run /init as init process > [ 0.703424] with arguments: > [ 0.703425] /init > [ 0.703425] \\vmlinuz > [ 0.703426] with environment: > [ 0.703427] HOME=/ > [ 0.703427] TERM=linux > [ 0.703428] serial=tty0 > [ 0.745097] BPF: type_id=29677 offset=170152 size=4 > [ 0.745744] BPF: > [ 0.745995] BPF:Invalid offset > [ 0.746382] BPF: > [ 0.746382] > [ 0.746803] failed to validate module [jbd2] BTF: -22 > [ 0.810494] failed to validate module [crc32c_intel] BTF: -22 > [ 0.895810] failed to validate module [crc32c_generic] BTF: -22 > [ 0.975781] failed to validate module [libcrc32c] BTF: -22 > [ 1.149204] failed to validate module [serio] BTF: -22 > [ 1.165209] failed to validate module [serio] BTF: -22 > [ 1.165321] failed to validate module [xhci_pci_renesas] BTF: -22 > [ 1.168234] failed to validate module [crc32c_intel] BTF: -22 > [ 33.222665] random: fast init done > [ 55.452163] failed to validate module [crc32c_intel] BTF: -22 > [ 55.493354] failed to validate module [crc32c_generic] BTF: -22 > [ 55.576653] failed to validate module [libcrc32c] BTF: -22 > [ 61.671703] failed to validate module [jbd2] BTF: -22 > > > The status of systemd-modules-load.service was: > > systemd-modules-load.service - Load Kernel Modules > Loaded: loaded (/usr/local/lib/systemd/system/systemd-modules-load.service; > static) > Active: failed (Result: exit-code) since Thu 2021-05-20 01:05:41 UTC; 3min > 48s ago > Docs: man:systemd-modules-load.service(8) > man:modules-load.d(5) > Process: 93 ExecStart=/usr/lib/systemd/systemd-modules-load (code=exited, st > atus=1/FAILURE) > Main PID: 93 (code=exited, status=1/FAILURE) > CPU: 24ms > > May 20 01:05:41 archlinux systemd-modules-load[93]: Failed to insert module 'ext > 4': Invalid argument > May 20 01:05:41 archlinux systemd-modules-load[93]: Failed to insert module 'xfs > ': Invalid argument > May 20 01:05:41 archlinux systemd[1]: systemd-modules-load.service: Main process > exited, code=exited, status=1/FAILURE > May 20 01:05:41 archlinux systemd[1]: systemd-modules-load.service: Failed with > result 'exit-code'. > May 20 01:05:41 archlinux systemd[1]: Failed to start Load Kernel Modules. > Notice: journal has been rotated since unit was started, output may be incomplet > e. > > > I would also like to mention that I tried both 5.13.0-rc2-next-20210520 > and 5.13.0-rc2-next-20210521 without any change in the errors. > Also, I generated initramfs based systemd and busybox both. The dmesg > output is from the busybox version and the systemd-modules-load.service > output is from the systemd version. > > Further, I took the same config and ran `make mod2yesconfig` in > order to eliminate the module based errors entirely. > This time the kernel failed to compile (perhaps due to low memory) > dmesg contains the lines > > [17742.379990] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/session-5.scope,task=pahole,pid=292673,uid=1000 > [17742.380003] Out of memory: Killed process 292673 (pahole) total-vm:12034912kB, anon-rss:4269536kB, file-rss:4kB, shmem-rss:0kB, UID:1000 pgtables:23612kB oom_score_adj:0 > [17743.802356] oom_reaper: reaped process 292673 (pahole), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB > > and the output to `make -j16 all` is > DESCEND objtool > DESCEND bpf/resolve_btfids > CALL scripts/atomic/check-atomics.sh > CALL scripts/checksyscalls.sh > CHK include/generated/compile.h > CHK kernel/kheaders_data.tar.xz > GEN .version > CHK include/generated/compile.h > UPD include/generated/compile.h > CC init/version.o > AR init/built-in.a > LD vmlinux.o > MODPOST vmlinux.symvers > MODINFO modules.builtin.modinfo > GEN modules.builtin > LD .tmp_vmlinux.btf > BTF .btf.vmlinux.bin.o > btf_elf__write: failed to add .BTF section to '.tmp_vmlinux.btf': 2! > Failed to encode BTF > LD .tmp_vmlinux.kallsyms1 > KSYMS .tmp_vmlinux.kallsyms1.S > AS .tmp_vmlinux.kallsyms1.S > LD .tmp_vmlinux.kallsyms2 > KSYMS .tmp_vmlinux.kallsyms2.S > AS .tmp_vmlinux.kallsyms2.S > LD vmlinux > BTFIDS vmlinux > FAILED: load BTF from vmlinux: No such file or directory > make: *** [Makefile:1275: vmlinux] Error 255 > make: *** Deleting file 'vmlinux' > > I captured the above output in my 3rd attempt to compile the kernel > after mod2yesconfig as the previous two attempts crashed Xorg itself. > > Can someone please let me know what's wrong here? > I would happily provide more logs if it is required. > > Hrtk > Hi, Here is a reply to a similar message/problem: https://lore.kernel.org/lkml/CAEf4BzZuU2TYMapSy7s3=D8iYtVw_N+=hh2ZMGG9w6N0G1HvbA@xxxxxxxxxxxxxx/ so it looks like Andrii is still debugging this problem. -- ~Randy
