On Tue, Aug 02, 2022 at 05:13:26PM +0200, Jason A. Donenfeld wrote: > Hi Xiaoyao, > > On Tue, Aug 2, 2022 at 5:06 PM Jason A. Donenfeld <ja...@zx2c4.com> wrote: > > > > Hi Xiaoyao, > > > > On Tue, Aug 02, 2022 at 10:53:07PM +0800, Xiaoyao Li wrote: > > > yes, with >= 7.1, pcmc->legacy_no_rng_seed = false by default, and RNG > > > seed is used. > > > > This is intended behavior. Being on by default is basically the whole > > point of it. Otherwise it's useless. > > > > > > > > > Either way, this shouldn't cause boot failures. > > > > > > It does fail booting OVMF with #PF. Below diff can fix the #PF for me. > > > > Huh, interesting. Sounds like maybe there's a bug I need to fix. Can you > > send me some repro instructions, and I'll look into it right away. > > I just tried booting Fedora using OVMF and didn't have any problems. I > used this command line:
I managed to reproduce on a Fedora 36 host, using QEMU git master from today. $ git clone https://gitlab.com/berrange/tiny-vm-tools $ cd tiny-vm-tools $ ./make-tiny-image.py --run date date tiny-initrd.img Copy lib /lib/ld-musl-x86_64.so.1 -> /tmp/make-tiny-imagebcuv8i_b/lib/ld-musl-x86_64.so.1 Copy bin /usr/bin/date -> /tmp/make-tiny-imagebcuv8i_b/bin/date Copy lib /lib64/libc.so.6 -> /tmp/make-tiny-imagebcuv8i_b/lib64/libc.so.6 Copy lib /lib64/ld-linux-x86-64.so.2 -> /tmp/make-tiny-imagebcuv8i_b/lib64/ld-linux-x86-64.so.2 $ cp /usr/share/edk2/ovmf/OVMF_VARS.fd vars.fd $ ~/src/virt/qemu.git/build/qemu-system-x86_64 \ -blockdev node-name=file_ovmf_code,driver=file,filename=/usr/share/edk2/ovmf/OVMF_CODE.fd,auto-read-only=on,discard=unmap \ -blockdev node-name=drive_ovmf_code,driver=raw,read-only=on,file=file_ovmf_code \ -blockdev node-name=file_ovmf_vars,driver=file,filename=vars.fd,auto-read-only=on,discard=unmap \ -blockdev node-name=drive_ovmf_vars,driver=raw,read-only=off,file=file_ovmf_vars \ -machine pc-q35-7.1,pflash0=drive_ovmf_code,pflash1=drive_ovmf_vars \ -kernel /boot/vmlinuz-5.18.5-200.fc36.x86_64 \ -initrd tiny-initrd.img \ -m 8000 \ -display none \ -nodefaults \ -serial stdio \ -append 'console=ttyS0 quiet' It results in OVMF crashing and displaying this dump on console: !!!! X64 Exception Type - 0D(#GP - General Protection) CPU Apic ID - 00000000 !!!! ExceptionData - 0000000000000000 RIP - 0000000077EA6BBE, CS - 0000000000000038, RFLAGS - 0000000000000206 RAX - 28006E6F69746163, RCX - 0000000000000000, RDX - 41CBF4FA982C298B RBX - 000000007D9C3000, RSP - 000000007FEDF8E0, RBP - 0000000000000000 RSI - 0000000000000000, RDI - 000000007D9C3000 R8 - 000000007D9C2F18, R9 - 000000007FEDF980, R10 - 0000000000000000 R11 - 0000000000000006, R12 - 28006E6F69746163, R13 - 000000007FEDF980 R14 - 000000007734F000, R15 - 000000007FEDFD01 DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030 GS - 0000000000000030, SS - 0000000000000030 CR0 - 0000000080010033, CR2 - 0000000000000000, CR3 - 000000007FC01000 CR4 - 0000000000000668, CR8 - 0000000000000000 DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000 DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400 GDTR - 000000007F9DE000 0000000000000047, LDTR - 0000000000000000 IDTR - 000000007F40F018 0000000000000FFF, TR - 0000000000000000 FXSAVE_STATE - 000000007FEDF540 !!!! Find image based on IP(0x77EA6BBE) (No PDB) (ImageBase=000000007734F000, EntryPoint=0000000077EA65FC) !!!! Changing to pc-q35-7.0 makes it work and prints current 'date' output before shutting down. Similarly adding 'pcmc->legacy_no_rng_seed = true;' for 7.1 machine type also makes it work. Turning on isa-debugcon for OVMF doesn't show anything especially unsual - just a slightly different kernel image size, due to the RNG seed having been added. With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
