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4d330fe54145ecfbb657ac01a554fdedf3c1927e
linux/arch/riscv/kernel
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Breno Leitao 95c54cd9c7 riscv: kexec: Initialize kexec_buf struct 
The kexec_buf structure was previously declared without initialization.
commit bf454ec31a ("kexec_file: allow to place kexec_buf randomly")
added a field that is always read but not consistently populated by all
architectures. This un-initialized field will contain garbage.

This is also triggering a UBSAN warning when the uninitialized data was
accessed:

	------------[ cut here ]------------
	UBSAN: invalid-load in ./include/linux/kexec.h:210:10
	load of value 252 is not a valid value for type '_Bool'

Zero-initializing kexec_buf at declaration ensures all fields are
cleanly set, preventing future instances of uninitialized memory being
used.

Fixes: bf454ec31a ("kexec_file: allow to place kexec_buf randomly")
Signed-off-by: Breno Leitao <leitao@debian.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250827-kbuf_all-v1-2-1df9882bb01a@debian.org
Signed-off-by: Paul Walmsley <pjw@kernel.org>
2025-09-05 15:31:28 -06:00
..
compat_vdso
Makefile: remove redundant tool coverage variables
2024-05-14 23:35:48 +09:00
pi
stackleak: Rename STACKLEAK to KSTACK_ERASE
2025-07-21 21:35:01 -07:00
probes
riscv: uprobes: Add missing fence.i after building the XOL buffer
2025-04-24 13:20:02 -07:00
tests
treewide: replace or remove redundant def_bool in Kconfig files
2024-02-20 20:47:45 +09:00
vdso
riscv: vdso: Exclude .rodata from the PT_DYNAMIC segment
2025-06-10 13:06:48 -07:00
vendor_extensions
riscv: Fix sparse warning in vendor_extensions/sifive.c
2025-06-23 15:57:59 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
acpi_numa.c
ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
2024-09-20 01:31:26 -07:00
acpi.c
mm/ioremap: pass pgprot_t to ioremap_prot() instead of unsigned long
2025-03-16 22:06:23 -07:00
alternative.c
asm-generic: introduce text-patching.h
2024-11-07 14:25:15 -08:00
asm-offsets.c
riscv: uaccess: Only restore the CSR_STATUS SUM bit
2025-06-05 14:03:17 -07:00
bugs.c
riscv: Add ghostwrite vulnerability
2025-01-18 12:33:39 -08:00
cacheinfo.c
riscv: cacheinfo: Use of_property_present() for non-boolean properties
2025-02-14 13:04:20 -08:00
cfi.c
cfi: Move BPF CFI types and helpers to generic code
2025-07-31 18:23:53 -07:00
compat_signal.c
riscv: compat: signal: Add rt_frame implementation
2022-05-17 16:37:21 -07:00
compat_syscall_table.c
riscv: convert to generic syscall table
2024-07-10 14:23:38 +02:00
copy-unaligned.h
RISC-V: Report vector unaligned access speed hwprobe
2024-10-18 12:38:34 -07:00
copy-unaligned.S
riscv: Use SYM_*() assembly macros instead of deprecated ones
2023-11-06 09:42:47 -08:00
cpu_ops_sbi.c
riscv: cpu_ops_sbi: Use static array for boot_data
2025-06-30 06:58:11 +00:00
cpu_ops_spinwait.c
riscv: prevent pt_regs corruption for secondary idle threads
2024-05-30 09:42:51 -07:00
cpu_ops.c
riscv: Use the same CPU operations for all CPUs
2024-01-04 15:03:07 -08:00
cpu-hotplug.c
riscv: Use '%u' to format the output of 'cpu'
2024-10-25 06:18:40 -07:00
cpu.c
riscv: Add vendor extensions to /proc/cpuinfo
2024-07-22 15:36:55 -07:00
cpufeature.c
riscv: Add support for Zicbop
2025-06-05 11:09:37 -07:00
crash_dump.c
vmcore: convert copy_oldmem_page() to take an iov_iter
2022-04-29 14:37:59 -07:00
crash_save_regs.S
RISC-V: Fixup get incorrect user mode PC for kernel mode regs
2022-08-11 08:54:40 -07:00
efi-header.S
include: pe.h: Fix PE definitions
2025-05-21 16:46:37 +02:00
efi.c
riscv: Use accessors to page table entries instead of direct dereference
2023-12-20 10:48:15 -08:00
entry.S
riscv: use lw when reading int cpu in new_vmalloc_check
2025-09-05 15:30:45 -06:00
fpu.S
RISC-V: Replace RISCV_MISALIGNED with RISCV_SCALAR_MISALIGNED
2024-10-18 12:38:32 -07:00
ftrace.c
riscv: ftrace: Properly acquire text_mutex to fix a race condition
2025-07-16 08:21:47 -07:00
head.h
riscv: entry: Convert to generic entry
2023-03-23 08:47:00 -07:00
head.S
RISC-V: KVM: Remove scounteren initialization
2025-05-21 09:34:55 +05:30
hibernate-asm.S
riscv: Use SYM_*() assembly macros instead of deprecated ones
2023-11-06 09:42:47 -08:00
hibernate.c
riscv: hibernate: remove WARN_ON in save_processor_state
2023-06-23 10:06:22 -07:00
image-vars.h
efi: move screen_info into efi init code
2023-10-17 16:33:39 +02:00
irq.c
riscv: Helper to parse hart index
2025-06-26 16:06:40 +02:00
jump_label.c
riscv: Move nop definition to insn-def.h
2025-03-20 09:14:42 +00:00
kernel_mode_fpu.c
riscv: add support for kernel-mode FPU
2024-05-19 14:36:19 -07:00
kernel_mode_vector.c
riscv: vector: Support xtheadvector save/restore
2025-01-18 12:33:33 -08:00
kexec_elf.c
riscv: kexec: Initialize kexec_buf struct
2025-09-05 15:31:28 -06:00
kexec_image.c
riscv: kexec: Initialize kexec_buf struct
2025-09-05 15:31:28 -06:00
kexec_relocate.S
riscv: kexec: Cleanup riscv_kexec_relocate
2023-09-20 02:53:29 -07:00
kgdb.c
riscv: KGDB: Remove ".option norvc/.option rvc" for kgdb_compiled_break
2025-04-16 07:29:34 -07:00
machine_kexec_file.c
riscv: kexec: Initialize kexec_buf struct
2025-09-05 15:31:28 -06:00
machine_kexec.c
kexec: Consolidate machine_kexec_mask_interrupts() implementation
2024-12-11 20:32:34 +01:00
Makefile
Merge tag 'kbuild-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2025-06-07 10:05:35 -07:00
Makefile.syscalls
syscalls: fix syscall macros for newfstat/newfstatat
2024-08-02 15:20:47 +02:00
mcount-dyn.S
riscv: ftrace: support direct call using call_ops
2025-06-05 11:09:31 -07:00
mcount.S
riscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler
2025-03-19 12:03:25 +00:00
module-sections.c
riscv: module: Optimize PLT/GOT entry counting
2025-06-05 11:09:43 -07:00
module.c
riscv: module: Fix out-of-bounds relocation access
2025-04-14 13:07:07 +00:00
paravirt.c
RISC-V: KVM: Rename the SBI_STA_SHMEM_DISABLE to a generic name
2024-04-22 11:13:52 +05:30
patch.c
asm-generic: introduce text-patching.h
2024-11-07 14:25:15 -08:00
perf_callchain.c
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2024-11-23 16:00:50 -08:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
process.c
Merge tag 'riscv-for-linus-6.16-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
2025-06-06 18:05:18 -07:00
ptrace.c
riscv: ptrace: Use USER_REGSET_NOTE_TYPE() to specify regset note names
2025-07-14 22:27:48 -07:00
reset.c
riscv: Use do_kernel_power_off()
2022-05-19 19:30:30 +02:00
return_address.c
riscv: add CALLER_ADDRx support
2024-02-22 12:17:47 -08:00
riscv_ksyms.c
riscv: Omit optimized string routines when using KASAN
2024-09-19 01:10:00 -07:00
sbi_ecall.c
riscv: Fix RISCV_ALTERNATIVE_EARLY
2024-09-03 07:57:55 -07:00
sbi-ipi.c
RISC-V: Enable the IPI before workqueue_online_cpu()
2024-08-01 07:15:43 -07:00
sbi.c
riscv: sbi: add SBI FWFT extension calls
2025-06-04 15:11:02 -07:00
setup.c
riscv: optimize gcd() performance on RISC-V without Zbb extension
2025-07-19 19:08:28 -07:00
signal.c
riscv: signal: fix signal frame size
2025-02-14 13:06:44 -08:00
smp.c
riscv: print hartid on bringup
2025-04-01 07:03:03 +00:00
smpboot.c
riscv: print hartid on bringup
2025-04-01 07:03:03 +00:00
soc.c
riscv: Fix builtin DTB handling
2021-01-07 19:00:50 -08:00
stacktrace.c
riscv: remove useless pc check in stacktrace handling
2025-03-18 09:06:21 +00:00
suspend_entry.S
riscv: Use SYM_*() assembly macros instead of deprecated ones
2023-11-06 09:42:47 -08:00
suspend.c
riscv: Add stimecmp save and restore
2025-03-18 12:59:03 +00:00
sys_hwprobe.c
Merge tag 'riscv-mw1-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux into for-next
2025-06-05 12:26:06 -07:00
sys_riscv.c
syscalls: mmap(): use unsigned offset type consistently
2024-06-25 15:57:38 +02:00
syscall_table.c
riscv: convert to generic syscall table
2024-07-10 14:23:38 +02:00
time.c
RISC-V: paravirt: Add skeleton for pv-time support
2023-12-30 11:25:03 +05:30
traps_misaligned.c
riscv: traps_misaligned: properly sign extend value in misaligned load handler
2025-07-16 09:05:39 -07:00
traps.c
riscv: Enable interrupt during exception handling
2025-07-16 09:05:26 -07:00
unaligned_access_speed.c
riscv: misaligned: request misaligned exception from SBI
2025-06-04 15:11:03 -07:00
vdso.c
riscv: enable mseal sysmap for RV64
2025-06-05 14:03:08 -07:00
vec-copy-unaligned.S
riscv: Fix the __riscv_copy_vec_words_unaligned implementation
2025-03-18 13:37:27 +00:00
vector.c
Merge tag 'riscv-for-linus-6.14-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
2025-01-31 15:13:25 -08:00
vendor_extensions.c
riscv: Add SiFive xsfvqmaccdod and xsfvqmaccqoq vendor extensions
2025-05-08 11:01:43 -07:00
vmcore_info.c
riscv: don't export va_kernel_pa_offset in vmcoreinfo for XIP kernel
2024-09-12 07:22:56 -07:00
vmlinux-xip.lds.S
riscv: remove limit on the size of read-only section for XIP kernel
2024-09-12 07:23:02 -07:00
vmlinux.lds.S
riscv: Add runtime constant support
2025-03-20 09:15:03 +00:00