Your message dated Tue, 14 Apr 2026 03:13:06 +0000
with message-id <[email protected]>
and subject line Bug#1131431: fixed in linux 7.0-1~exp1
has caused the Debian Bug report #1131431,
regarding linux: loong64 KVM warnings (memcpy + UBSAN out-of-bounds)
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.
(NB: If you are a system administrator and have no idea what this
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--
1131431: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1131431
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: linux
Version: 6.19.8-1
Severity: normal
Tags: upstream
X-Debbugs-Cc: [email protected], [email protected]
User: [email protected]
Usertags: loong64
Hi,
DSA reinstalled a loong64 physical machine (previously using the
debian-ports archive, now running latest sid), and we started observing
kernel warnings when starting a VM using KVM.
First warning:
| [ 2050.507635] ------------[ cut here ]------------
| [ 2050.507662] memcpy: detected field-spanning write (size 4) of single field
"p" at arch/loongarch/kvm/intc/eiointc.c:520 (size 0)
| [ 2050.507682] WARNING: arch/loongarch/kvm/intc/eiointc.c:520 at
kvm_eiointc_regs_access.isra.0+0x354/0x3c0, CPU#6: qemu-system-loo/16813
| [ 2050.507697] Modules linked in: bridge stp llc nls_ascii nls_cp437 vfat fat
snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core ast snd_hwdep
drm_client_lib snd_pcm drm_shmem_helper sg drm_kms_helper snd_timer snd
i2c_algo_bit evdev soundcore ip6t_REJECT nf_reject_ipv6 ip6table_filter
ip6_tables xt_hashlimit ipt_REJECT nf_reject_ipv4 xt_NFLOG nfnetlink_log
xt_multiport xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
drm iptable_filter ip_tables x_tables dm_snapshot dm_bufio vhost_net vhost tun
vhost_iotlb tap sch_fq tcp_bbr zlib_deflate configfs nfnetlink autofs4 ext4
crc16 mbcache jbd2 crc32c_cryptoapi raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor raid6_pq raid0 dm_mod raid1 md_mod
sd_mod cdc_ether usbnet mii ahci libahci xhci_pci ohci_pci xhci_hcd libata
ehci_pci dwmac_loongson ehci_hcd stmmac_libpci megaraid_sas ohci_hcd stmmac
usbcore scsi_mod r8169 pcs_xpcs realtek phylink scsi_common usb_common efivarfs
| [ 2050.507873] CPU: 6 UID: 0 PID: 16813 Comm: qemu-system-loo Not tainted
6.19.8+deb14-loong64 #1 PREEMPTLAZY Debian 6.19.8-1
| [ 2050.507879] Hardware name: LOONGSON Dabieshan/Loongson-LS2C50C6, BIOS
Loongson UEFI (3C50007A2000_C6) V4.3.0-Dual 05/21/25 09:17:40
| [ 2050.507883] pc 9000000000280d74 ra 9000000000280d74 tp 900000010faac000 sp
900000010faafb20
| [ 2050.507887] a0 0000000000000074 a1 0000000000000000 a2 900000010faaf920 a3
900000010faaf918
| [ 2050.507890] a4 0000000000000000 a5 9000000001a8d960 a6 203a7970636d656d a7
293020657a697328
| [ 2050.507894] t0 6d08ee86308d20d5 t1 6d08ee86308d20d5 t2 90000000017e8000 t3
0000000000000001
| [ 2050.507897] t4 fffffffffffffffe t5 00000000ffffdfff t6 900010207ff04000 t7
0000000000000000
| [ 2050.507900] t8 0000000000000000 u0 900000011ad00050 s9 900000010faafec0 s0
900000010faafb90
| [ 2050.507903] s1 900000011ad00000 s2 900000011ad00050 s3 0000000000000000 s4
00007ffffbf39830
| [ 2050.507906] s5 000000000000002f s6 000055556b5480d0 s7 0000555559d0be48 s8
0000000000000000
| [ 2050.507910] ra: 9000000000280d74
kvm_eiointc_regs_access.isra.0+0x354/0x3c0
| [ 2050.507914] ERA: 9000000000280d74
kvm_eiointc_regs_access.isra.0+0x354/0x3c0
| [ 2050.507918] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
| [ 2050.507932] PRMD: 00000000 (PPLV0 -PIE -PWE)
| [ 2050.507940] EUEN: 00000007 (+FPE +SXE +ASXE -BTE)
| [ 2050.507948] ECFG: 00071c1d (LIE=0,2-4,10-12 VS=7)
| [ 2050.507956] ESTAT: 000c0000 [BRK] (IS= ECode=12 EsubCode=0)
| [ 2050.507962] PRID: 0014c011 (Loongson-64bit, Loongson-3C5000)
| [ 2050.507966] CPU: 6 UID: 0 PID: 16813 Comm: qemu-system-loo Not tainted
6.19.8+deb14-loong64 #1 PREEMPTLAZY Debian 6.19.8-1
| [ 2050.507970] Hardware name: LOONGSON Dabieshan/Loongson-LS2C50C6, BIOS
Loongson UEFI (3C50007A2000_C6) V4.3.0-Dual 05/21/25 09:17:40
| [ 2050.507972] Stack : 900000010faaf7f8 0000000000000000 9000000000238828
900000010faac000
| [ 2050.507978] 900000010faaf740 900000010faaf748 0000000000000000
900000010faaf888
| [ 2050.507983] 900000010faaf880 900000010faaf880 900010207ff19b40
6572617764726148
| [ 2050.507987] 203a656d616e2065 900000010faaf748 6d08ee86308d20d5
900000012859c840
| [ 2050.507992] 900000010faac000 90000000015c8868 00000000ffffdfff
900010207ff04000
| [ 2050.507997] 0000000000000000 0000000000000000 000000207b878000
900000010faafec0
| [ 2050.508002] 0000000000000000 90000000017e8000 0000000000000000
90000000015c8868
| [ 2050.508006] 0000000000000208 0000000000000009 000055556b5480d0
0000555559d0be48
| [ 2050.508011] 0000000000000000 0000000000000000 9000000000238844
000055556bcb67e8
| [ 2050.508016] 00000000000000b0 0000000000000000 0000000000000007
0000000000071c1d
| [ 2050.508020] ...
| [ 2050.508023] Call Trace:
| [ 2050.508026] [<9000000000238844>] show_stack+0x64/0x190
| [ 2050.508037] [<9000000000230fc8>] dump_stack_lvl+0x70/0x9c
| [ 2050.508041] [<9000000000289630>] __warn+0xa0/0x1b0
| [ 2050.508046] [<90000000012358e8>] __report_bug+0xa8/0x1c0
| [ 2050.508052] [<9000000001235af0>] report_bug+0x40/0xd0
| [ 2050.508055] [<90000000012791f4>] do_bp+0x254/0x420
| [ 2050.508066] [<0000000000000000>] 0x0
| [ 2050.508070] [<9000000000280d74>] kvm_eiointc_regs_access.isra.0+0x354/0x3c0
| [ 2050.508073] [<90000000002812bc>] kvm_eiointc_set_attr+0x34c/0x770
| [ 2050.508076] [<9000000000262f04>] kvm_device_ioctl+0x264/0x3a0
| [ 2050.508082] [<900000000075f09c>] sys_ioctl+0x52c/0x1150
| [ 2050.508089] [<9000000001279804>] do_syscall+0xc4/0x320
| [ 2050.508094] ---[ end trace 0000000000000000 ]---
This warning could have been introduced by the following upstream
commit:
commit 01a8e68396a6d51f5ba92021ad1a4b8eaabdd0e7
Author: Bibo Mao <[email protected]>
Date: Thu Sep 18 19:44:22 2025 +0800
LoongArch: KVM: Avoid copy_*_user() with lock hold in
kvm_eiointc_sw_status_access()
The second one:
| [ 2050.508176] ------------[ cut here ]------------
| [ 2050.508179] UBSAN: array-index-out-of-bounds in
/build/reproducible-path/linux-6.19.8/arch/loongarch/kvm/vcpu.c:569:20
| [ 2050.508234] index -1 is out of range for type 'kvm_phyid_info [256]'
| [ 2050.508248] CPU: 6 UID: 0 PID: 16813 Comm: qemu-system-loo Tainted: G
W 6.19.8+deb14-loong64 #1 PREEMPTLAZY Debian 6.19.8-1
| [ 2050.508253] Tainted: [W]=WARN
| [ 2050.508254] Hardware name: LOONGSON Dabieshan/Loongson-LS2C50C6, BIOS
Loongson UEFI (3C50007A2000_C6) V4.3.0-Dual 05/21/25 09:17:40
| [ 2050.508256] Stack : 900000010faaf8f8 0000000000000000 9000000000238828
900000010faac000
| [ 2050.508261] 900000010faaf840 900000010faaf848 0000000000000000
900000010faaf988
| [ 2050.508266] 900000010faaf980 900000010faaf980 900010207ff1a3f0
6572617764726148
| [ 2050.508271] 203a656d616e2065 900000010faaf848 6d08ee86308d20d5
900000012859c840
| [ 2050.508275] 900000010faac000 90000000015c8868 00000000ffffdfff
900010207ff04000
| [ 2050.508280] 0000000000000000 0000000000000000 000000207b878000
0000000000000000
| [ 2050.508284] 0000000000000000 90000000017e8000 0000000000000000
90000000015c8868
| [ 2050.508289] 0000000000000003 ffffffffffffffff 900000011ad020b8
0000000000000000
| [ 2050.508293] 900000011ad00000 0000000000000000 9000000000238844
000055556bcb67e8
| [ 2050.508298] 00000000000000b0 0000000000000007 0000000000000007
0000000000071c1d
| [ 2050.508302] ...
| [ 2050.508304] Call Trace:
| [ 2050.508306] [<9000000000238844>] show_stack+0x64/0x190
| [ 2050.508310] [<9000000000230fc8>] dump_stack_lvl+0x70/0x9c
| [ 2050.508314] [<900000000022bc60>] ubsan_epilogue+0xc/0x3c
| [ 2050.508318] [<9000000000bc61c4>] __ubsan_handle_out_of_bounds+0xa4/0xb0
| [ 2050.508322] [<900000000027a6c0>] kvm_get_vcpu_by_cpuid+0xb0/0xc0
| [ 2050.508326] [<90000000002813b8>] kvm_eiointc_set_attr+0x448/0x770
| [ 2050.508329] [<9000000000262f04>] kvm_device_ioctl+0x264/0x3a0
| [ 2050.508334] [<900000000075f09c>] sys_ioctl+0x52c/0x1150
| [ 2050.508338] [<9000000001279804>] do_syscall+0xc4/0x320
| [ 2050.508343] ---[ end trace ]---
The problem was not present when running kernel 6.17.7+deb14-loong64, so
it seems to be a relatively recent regression. Despite the warnings,
things seems to work relatively well.
Regards
Aurelien
--- End Message ---
--- Begin Message ---
Source: linux
Source-Version: 7.0-1~exp1
Done: Ben Hutchings <[email protected]>
We believe that the bug you reported is fixed in the latest version of
linux, 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.
Ben Hutchings <[email protected]> (supplier of updated linux 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: Mon, 13 Apr 2026 18:00:30 +0200
Source: linux
Architecture: source
Version: 7.0-1~exp1
Distribution: experimental
Urgency: medium
Maintainer: Debian Kernel Team <[email protected]>
Changed-By: Ben Hutchings <[email protected]>
Closes: 1113728 1113996 1122357 1127612 1130971 1131166 1131431 1131546 1132155
1132201 1132622 1132796 1132814
Changes:
linux (7.0-1~exp1) experimental; urgency=medium
.
* New upstream release: https://kernelnewbies.org/Linux_7.0
- [amd64] platform/x86: hp-bioscfg: Support allocations of larger data
(Closes: #1127612)
- [amd64] crypto: padlock-sha - Disable for Zhaoxin processor
(Closes: #1113996)
- iommu: Fix mapping check for 0x0 to avoid re-mapping it (Closes:
#1130971)
- bpf: Fix constant blinding for PROBE_MEM32 stores (CVE-2026-23417)
(Closes: #1132622)
- [loong64] KVM: Fix undefined behaviour found by UBSAN (Closes: #1131431):
+ Make kvm_get_vcpu_by_cpuid() more robust
+ Handle the case that EIOINTC's coremap is empty
+ Fix base address calculation in kvm_eiointc_regs_access()
.
[ Bastian Blank ]
* Merge kernel-wedge. This takes over maintenance of this code from the
installer team.
* Use non-aliases paths in udebs. (closes: #1122357)
.
[ Han Gao ]
* [riscv64] Enable RTC_DRV_EFI as module
* [riscv64] Enable SENSORS_PWM_FAN as module for Sophgo SG2042
* [riscv64] Enable SENSORS_MR75203 as module for THEAD TH1520
* [riscv64] Enable POWER_SEQUENCING as module for THEAD TH1520
* [riscv64] Enable POWER_SEQUENCING_TH1520_GPU as module for THEAD TH1520
* [riscv64] Enable SND_SOC_K1_I2S as module for Spacemit K1
* [riscv64] Enable CONFIG_PWM_TH1520 for THEAD TH1520
.
[ Salvatore Bonaccorso ]
* [amd64] drivers/platform/x86/uniwill: Enable X86_PLATFORM_DRIVERS_UNIWILL
* [amd64] drivers/platform/x86/uniwill: Enable UNIWILL_LAPTOP as module
(Closes: #1131166)
* [amd64] drivers/media/i2c: Enable VIDEO_OV02E10 as module (Closes:
#1132201)
* [amd64] drivers/staging/media/ipu7: Enable VIDEO_INTEL_IPU7 as module
(Closes: #1132814)
.
[ Ben Hutchings ]
* Fix ordering of kernel version strings for multiple Debian revisions
(Closes: #1113728)
* d/b/test-patches: Expect debian/control-real target to return 0
* d/b/test-patches: Disable signing so we build linux-image packages again
(Closes: #1131546)
* kernel-wedge: Fix find-dups to not look for kernel-image-di
* kernel-wedge: Remove handling of unset $SOURCEDIR
* kernel-wedge: Remove support for non-Linux kernels
* kernel-wedge: Remove support for separate config directories
* kernel-wedge: Remove support for non-modular kernel
* kernel-wedge: Remove support for exclude-packages
* kernel-wedge: Use cpio instead of tar in copy-files
* kernel-wedge: Rewrite copy-files in Perl
* kernel-wedge: Fix copy-files to skip softdeps in depmod output
* kernel-wedge: Combine gen-deps with copy-files
* kernel-wedge, udeb: Define which packages to build through package-list
* [mips*,sh4] udeb: Remove minix-modules package
* [mips*] udeb: Remove affs-modules package
* udeb: Build {jfs,loop,ppp,squashfs,uinput,xfs}-modules everywhere we can
(Closes: #1132155)
.
[ Aurelien Jarno ]
* [riscv64] Enable SPACEMIT_K3_CCU
* [riscv64] Enable PINCTRL_PIC64GX and PINCTRL_POLARFIRE_SOC
* [riscv64] Enable CV1800_MBOX, SND_SOC_CV1800B_TDM,
SND_SOC_CV1800B_ADC_CODEC and SND_SOC_CV1800B_DAC_CODEC as modules
.
[ Morgwai Kotarbinski ]
* linux-kbuild: Include scripts/gen-btf.sh (Closes: #1132796)
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