Liao Chang b7fb4d78a6 RISC-V: use memcpy for kexec_file mode ... The pointer to buffer loading kernel binaries is in kernel space for kexec_fil mode, When copy_from_user copies data from pointer to a block of memory, it checkes that the pointer is in the user space range, on RISCV-V that is: static inline bool __access_ok(unsigned long addr, unsigned long size) { return size <= TASK_SIZE && addr <= TASK_SIZE - size; } and TASK_SIZE is 0x4000000000 for 64-bits, which now causes copy_from_user to reject the access of the field 'buf' of struct kexec_segment that is in range [CONFIG_PAGE_OFFSET - VMALLOC_SIZE, CONFIG_PAGE_OFFSET), is invalid user space pointer. This patch fixes this issue by skipping access_ok(), use mempcy() instead. Signed-off-by: Liao Chang <liaochang1@huawei.com> Link: https://lore.kernel.org/r/20220408100914.150110-3-lizhengyu3@huawei.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2022-05-19 11:53:41 -07:00
..
probes	ftrace: disable preemption when recursion locked	2021-10-27 11:21:49 -04:00
vdso	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
asm-offsets.c	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
cacheinfo.c	drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()	2021-09-01 10:29:10 +02:00
cpu-hotplug.c	riscv: cpu-hotplug: clear cpu from numa map when teardown	2022-02-10 09:16:50 -08:00
cpu.c	riscv: cpu.c: don't use kernel-doc markers for comments	2022-03-31 15:42:46 -07:00
cpu_ops.c	RISC-V: Move spinwait booting method to its own config	2022-01-20 09:27:16 -08:00
cpu_ops_sbi.c	RISC-V: Declare per cpu boot data as static	2022-03-31 12:44:32 -07:00
cpu_ops_spinwait.c	RISC-V: Use __cpu_up_stack/task_pointer only for spinwait method	2022-01-20 09:27:08 -08:00
cpufeature.c	RISC-V: Add sscofpmf extension support	2022-03-21 15:01:09 -07:00
crash_dump.c	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
crash_save_regs.S	RISC-V: Add kdump support	2021-04-26 08:25:23 -07:00
efi-header.S	RISC-V: Add PE/COFF header for EFI stub	2020-10-02 14:31:16 -07:00
efi.c	RISC-V: Add EFI runtime services	2020-10-02 14:31:28 -07:00
entry.S	RISC-V Patches for the 5.18 Merge Window, Part 1	2022-03-25 10:11:38 -07:00
fpu.S
ftrace.c	ftrace: Cleanup ftrace_dyn_arch_init()	2021-10-08 19:41:39 -04:00
head.h	RISC-V: Move spinwait booting method to its own config	2022-01-20 09:27:16 -08:00
head.S	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
image-vars.h	arch/riscv:fix typo in a comment in arch/riscv/kernel/image-vars.h	2021-02-18 23:18:00 -08:00
irq.c	RISC-V: Remove do_IRQ() function	2020-06-09 19:11:24 -07:00
jump_label.c	riscv: Add jump-label implementation	2020-07-30 11:37:43 -07:00
kexec_relocate.S	riscv: Don't use va_pa_offset on kdump	2022-01-09 10:38:06 -08:00
kgdb.c	riscv: Fix "no previous prototype" compile warning in kgdb.c file	2020-07-09 20:09:30 -07:00
machine_kexec.c	RISC-V: use memcpy for kexec_file mode	2022-05-19 11:53:41 -07:00
Makefile	RISC-V CPU Idle Support	2022-03-30 16:17:54 -07:00
mcount-dyn.S	riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT	2021-01-14 15:09:05 -08:00
mcount.S	riscv: Workaround mcount name prior to clang-13	2021-04-26 08:25:01 -07:00
module-sections.c
module.c	RISC-V: module: fix apply_r_riscv_rcv_branch_rela typo	2022-03-31 13:20:11 -07:00
patch.c	riscv: Fixup compile error BUILD_BUG_ON failed	2021-01-14 15:09:01 -08:00
perf_callchain.c	riscv: Fix fill_callchain return value	2022-03-30 23:01:42 -07:00
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
process.c	RISC-V: Enable CPU_IDLE drivers	2022-03-10 09:29:21 -08:00
ptrace.c	ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h	2022-03-10 13:35:08 -06:00
reset.c	riscv: set default pm_power_off to NULL	2021-10-04 14:16:57 -07:00
riscv_ksyms.c	riscv: provide memmove implementation	2020-12-10 17:27:54 -08:00
sbi.c	RISC-V: Fix IPI/RFENCE hmask on non-monotonic hartid ordering	2022-02-14 12:27:45 -08:00
setup.c	drivers/base/node: consolidate node device subsystem initialization in node_dev_init()	2022-03-22 15:57:10 -07:00
signal.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
smp.c	RISC-V: Use common riscv_cpuid_to_hartid_mask() for both SMP=y and SMP=n	2022-01-09 12:13:31 -08:00
smpboot.c	RISC-V: Do not use cpumask data structure for hartid bitmap	2022-01-20 09:27:22 -08:00
soc.c	riscv: Fix builtin DTB handling	2021-01-07 19:00:50 -08:00
stacktrace.c	riscv: Rename "sp_in_global" to "current_stack_pointer"	2022-03-30 15:15:27 -07:00
suspend.c	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
suspend_entry.S	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
sys_riscv.c	RISC-V: Don't allow write+exec only page mapping request in mmap	2020-06-18 17:28:53 -07:00
syscall_table.c	riscv/vdso: Refactor asm/vdso.h	2021-10-02 13:42:23 -07:00
time.c	RISC-V Patches for the 5.13 Merge Window, Part 1	2021-05-06 09:24:18 -07:00
trace_irq.c	riscv: fix oops caused by irqsoff latency tracer	2022-02-24 20:30:30 -08:00
trace_irq.h	riscv: fix oops caused by irqsoff latency tracer	2022-02-24 20:30:30 -08:00
traps.c	exit: Add and use make_task_dead.	2021-12-13 12:04:45 -06:00
traps_misaligned.c	riscv: Unaligned load/store handling for M_MODE	2020-04-03 10:45:33 -07:00
vdso.c	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
vmlinux-xip.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove .fixup section	2022-01-05 17:53:37 -08:00
vmlinux.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove .fixup section	2022-01-05 17:53:37 -08:00