Kohei Enju 221049874b arm64: RSI: fix field-spanning write warning in attestation token init ...

The challenge is passed in registers a1 through a8. However, copying to
&regs.a1 makes FORTIFY treat the destination as the single a1 field,
resulting in a field-spanning write warning. [1]

Overlay the SMCCC register structure with an RSI-specific argument
layout and copy the challenge into an explicit 64-byte array. This keeps
the existing a1-a8 argument encoding while giving the copy a correctly
sized destination object.

[1]
memcpy: detected field-spanning write (size 64) of single field "&regs.a1" at ./arch/arm64/include/asm/rsi_cmds.h:119 (size 8)
WARNING: ./arch/arm64/include/asm/rsi_cmds.h:119 at rsi_attestation_token_init+0xdc/0xf8 [arm_cca_guest], CPU#0: cat/3314

Fixes: b880a80011 ("arm64: rsi: Add RSI definitions")
Signed-off-by: Kohei Enju <enju.kohei@fujitsu.com>
Signed-off-by: Will Deacon <will@kernel.org>

2026-07-26 14:22:46 +00:00

..

alpha

Merge tag 'pci-v7.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

2026-06-24 12:48:43 -07:00

arc

Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-06-21 13:20:19 -07:00

arm

Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)

2026-07-03 07:38:17 +02:00

arm64

arm64: RSI: fix field-spanning write warning in attestation token init

2026-07-26 14:22:46 +00:00

csky

ring-buffer: Flush and stop persistent ring buffer on panic

2026-05-21 08:20:58 -04:00

hexagon

uaccess: unify inline vs outline copy_{from,to}_user() selection

2026-05-28 21:24:44 -07:00

loongarch

Merge tag 'device-id-rework' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

2026-07-02 20:54:26 -10:00

m68k

m68k: coldfire: fix breakage of missed IO access updates

2026-07-08 22:51:54 +10:00

microblaze

uaccess: unify inline vs outline copy_{from,to}_user() selection

2026-05-28 21:24:44 -07:00

mips

Merge tag 'mips-fixes_7.2_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2026-07-04 06:05:28 -10:00

nios2

uaccess: unify inline vs outline copy_{from,to}_user() selection

2026-05-28 21:24:44 -07:00

openrisc

Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-06-21 13:20:19 -07:00

parisc

Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (headers)

2026-07-03 07:38:16 +02:00

powerpc

Merge tag 'device-id-rework' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

2026-07-02 20:54:26 -10:00

riscv

riscv: defconfig: enable ARCH_ULTRARISC

2026-07-08 10:41:40 -06:00

s390

s390: Add build salt to the vDSO

2026-07-08 17:02:48 +02:00

sh

Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)

2026-07-03 07:38:17 +02:00

sparc

Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)

2026-07-03 07:38:17 +02:00

um

Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-06-21 13:20:19 -07:00

x86

Merge tag 'perf-urgent-2026-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-07-11 10:11:45 -07:00

xtensa

Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-06-21 13:20:19 -07:00

.gitignore

…

Kconfig

Merge tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

2026-06-15 14:21:14 +05:30