Your message dated Sun, 03 May 2026 20:04:04 +0000
with message-id <[email protected]>
and subject line Bug#1108898: fixed in grub2 2.12-9+deb13u2
has caused the Debian Bug report #1108898,
regarding riscv64: Illegal instruction appears when using rdcycle in grub
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1108898: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1108898
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: grub-efi-riscv64-unsigned
User: [email protected]
Usertags: riscv64
X-Debbugs-Cc: [email protected]
X-Debbugs-Cc: [email protected]
Version: 2.12-8
Severity: normal
Tags: upstream
Dear Maintainer,
Illegal instructions will occur when debian riscv64 iso boots to grub.efi.
Because grub uses the rdcycle instruction.
Upstream[1] has fixed this issue and hopes to backport to 2.12.
[1]:
https://cgit.git.savannah.gnu.org/cgit/grub.git/commit/grub-core/kern/riscv/efi/init.c?id=c5ae124e11f28f637cbd38cb4d6c1b9817baa135
sudo qemu-system-riscv64 --enable-kvm -M virt -cpu host -m 2048 -smp 2
-nographic \
-boot d -cdrom debian-testing-riscv64-netinst.iso \
-device virtio-net-device,netdev=eth0 -netdev user,id=eth0 \
-device virtio-rng-pci \
-kernel /usr/lib/u-boot/qemu-riscv64_smode/uboot.elf \
-drive file=debian.qcow2,format=qcow2,if=virtio
U-Boot 2025.01-3 (Apr 08 2025 - 23:07:41 +0000)
CPU: riscv
Model: riscv-virtio,qemu
DRAM: 2 GiB
Core: 28 devices, 13 uclasses, devicetree: board
Flash: 32 MiB
Loading Environment from nowhere... OK
In: serial,usbkbd
Out: serial,vidconsole
Err: serial,vidconsole
No USB controllers found
Net: eth0: virtio-net#0
Working FDT set to feee6c60
Hit any key to stop autoboot: 0
Device 0: unknown device
Device 0: 1af4 VirtIO Block Device
Type: Hard Disk
Capacity: 610.2 MB = 0.5 GB (1249880 x 512)
... is now current device
Scanning virtio 0:2...
Failed to load '/'
Failed to load '/dtb/'
Failed to load EFI variables
Error: writing contents
** Unable to write file ubootefi.var **
Failed to persist EFI variables
Error: writing contents
** Unable to write file ubootefi.var **
Failed to persist EFI variables
Error: writing contents
** Unable to write file ubootefi.var **
Failed to persist EFI variables
Error: writing contents
** Unable to write file ubootefi.var **
Failed to persist EFI variables
Error: writing contents
** Unable to write file ubootefi.var **
Failed to persist EFI variables
Booting: virtio 0
Unhandled exception: Illegal instruction
EPC: 00000000fdc7a0b8 RA: 00000000fdc7a0fa TVAL: 00000000c0002573
EPC: 000000007e7720b8 RA: 000000007e7720fa reloc adjusted
SP: 00000000feee5050 GP: 0000000000000000 TP: 0000000000000000
T0: 00000000000000e0 T1: 00000000fdc6efe8 T2: 00000000000000f0
S0: 00000000feee5160 S1: 00000000feee52b0 A0: 00000000fdc6efa0
A1: 0000000000000000 A2: 00000000fdc6efe8 A3: fffffffffffffff8
A4: ffffffffffffffb8 A5: 0000000000000001 A6: 0000000000000007
A7: 0000000000000000 S2: 00000000fdc7f528 S3: 00000000fdc7f478
S4: 0000000000000000 S5: 00000000ff7f782c S6: 0000000000000000
S7: 00000000fef2fa70 S8: 0000000000000000 S9: 0000000000000001
S10: 0000000000000001 S11: 0000000000000000 T3: 000000000000001f
T4: 0000000000010000 T5: ffffffffffffffff T6: 00000000000000c0
Code: 7d42 7da2 6149 8082 1141 e022 e406 0800 (2573 c000)
UEFI image [0x00000000fdc6f000:0x00000000fdd8efff] pc=0xb0b8
'/\EFI\BOOT\BOOTRISCV64.EFI'
Thanks,
Han
--- End Message ---
--- Begin Message ---
Source: grub2
Source-Version: 2.12-9+deb13u2
Done: Aurelien Jarno <[email protected]>
We believe that the bug you reported is fixed in the latest version of
grub2, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Aurelien Jarno <[email protected]> (supplier of updated grub2 package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Thu, 30 Apr 2026 21:02:01 +0200
Source: grub2
Architecture: source
Version: 2.12-9+deb13u2
Distribution: trixie
Urgency: medium
Maintainer: GRUB Maintainers <[email protected]>
Changed-By: Aurelien Jarno <[email protected]>
Closes: 1108898
Changes:
grub2 (2.12-9+deb13u2) trixie; urgency=medium
.
* Non-maintainer upload.
* Apply patch from upstream to fix an illegal instruction on riscv64 in
grub.efi (Closes: #1108898)
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