Björn Töpel b2d473a601 riscv, kprobes: Stricter c.jr/c.jalr decoding ... In the compressed instruction extension, c.jr, c.jalr, c.mv, and c.add is encoded the following way (each instruction is 16b): ---+-+-----------+-----------+-- 100 0 rs1[4:0]!=0 00000 10 : c.jr 100 1 rs1[4:0]!=0 00000 10 : c.jalr 100 0 rd[4:0]!=0 rs2[4:0]!=0 10 : c.mv 100 1 rd[4:0]!=0 rs2[4:0]!=0 10 : c.add The following logic is used to decode c.jr and c.jalr: insn & 0xf007 == 0x8002 => instruction is an c.jr insn & 0xf007 == 0x9002 => instruction is an c.jalr When 0xf007 is used to mask the instruction, c.mv can be incorrectly decoded as c.jr, and c.add as c.jalr. Correct the decoding by changing the mask from 0xf007 to 0xf07f. Fixes: c22b0bcb1d ("riscv: Add kprobes supported") Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Guo Ren <guoren@kernel.org> Link: https://lore.kernel.org/r/20230102160748.1307289-1-bjorn@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-01-05 12:30:41 -08:00
..
compat_vdso	riscv: compat: vdso: Add COMPAT_VDSO base code implementation	2022-04-26 13:36:53 -07:00
probes	riscv, kprobes: Stricter c.jr/c.jalr decoding	2023-01-05 12:30:41 -08:00
vdso	riscv: vdso: fix section overlapping under some conditions	2022-11-29 18:45:53 -08:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
alternative.c	riscv: make patch-function pointer more generic in cpu_manufacturer_info struct	2022-06-16 15:47:40 -07:00
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
compat_signal.c	riscv: compat: signal: Add rt_frame implementation	2022-05-17 16:37:21 -07:00
compat_syscall_table.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
cpu_ops_sbi.c	riscv: cpu_ops_sbi: Add 64bit hartid support on RV64	2022-07-19 16:38:58 -07:00
cpu_ops_spinwait.c	RISC-V: cpu_ops_spinwait.c should include head.h	2022-08-11 13:24:16 -07:00
cpu_ops.c	riscv: ensure cpu_ops_sbi is declared	2022-08-11 13:46:51 -07:00
cpu-hotplug.c	riscv: cpu-hotplug: clear cpu from numa map when teardown	2022-02-10 09:16:50 -08:00
cpu.c	RISC-V Patches for the 6.2 Merge Window, Part 1	2022-12-14 15:23:49 -08:00
cpufeature.c	RISC-V: Ensure Zicbom has a valid block size	2022-12-09 19:12:52 -08:00
crash_core.c	RISC-V: Add arch_crash_save_vmcoreinfo support	2022-12-02 16:48:22 -08:00
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	RISC-V: Add PE/COFF header for EFI stub	2020-10-02 14:31:16 -07:00
efi.c	riscv: read-only pages should not be writable	2022-05-28 11:39:31 +02:00
elf_kexec.c	RISC-V: kexec: Fix memory leak of elf header buffer	2022-12-05 10:59:58 -08:00
entry.S	Merge patch series "RISC-V: Align the shadow stack"	2022-12-12 09:30:37 -08:00
fpu.S	riscv: abstract out CSR names for supervisor vs machine mode	2019-11-05 09:20:42 -08:00
ftrace.c	ftrace: Remove return value of ftrace_arch_modify_*()	2022-05-26 21:13:00 -04:00
head.h	RISC-V: Move spinwait booting method to its own config	2022-01-20 09:27:16 -08:00
head.S	riscv: Initialize thread pointer before calling C functions	2022-06-01 21:46:23 -07:00
image-vars.h	efi: libstub: Provide local implementations of strrchr() and memchr()	2022-11-09 12:42:02 +01:00
irq.c	RISC-V: Remove do_IRQ() function	2020-06-09 19:11:24 -07:00
jump_label.c	jump_label: make initial NOP patching the special case	2022-06-24 09:48:55 +02:00
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_file.c	RISC-V: Add kexec_file support	2022-05-19 12:14:18 -07:00
machine_kexec.c	riscv: kexec: Fixup crash_smp_send_stop without multi cores	2022-11-29 21:50:59 -08:00
Makefile	RISC-V: Add arch_crash_save_vmcoreinfo support	2022-12-02 16:48:22 -08:00
mcount-dyn.S	riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT	2021-01-14 15:09:05 -08:00
mcount.S	RISC-V: preserve a1 in mcount	2022-12-02 10:04:37 -08:00
module-sections.c	riscv: add missing header file includes	2019-10-28 00:46:01 -07:00
module.c	riscv: implement module alternatives	2022-05-11 21:36:31 -07:00
patch.c	riscv: patch_text: Fixup last cpu should be master	2022-04-22 08:29:24 -07:00
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	riscv: process: fix kernel info leakage	2022-11-10 13:43:15 -08:00
ptrace.c	riscv: compat: ptrace: Add compat_arch_ptrace implement	2022-05-17 16:37:22 -07:00
reset.c	riscv: Use do_kernel_power_off()	2022-05-19 19:30:30 +02:00
riscv_ksyms.c	riscv: provide memmove implementation	2020-12-10 17:27:54 -08:00
sbi.c	RISC-V: Export sbi_get_mvendorid() and friends	2022-12-07 09:17:38 +05:30
setup.c	riscv: mm: Proper page permissions after initmem free	2022-11-29 18:54:30 -08:00
signal.c	RISC-V: Fix unannoted hardirqs-on in return to userspace slow-path	2022-12-08 15:31:41 -08:00
smp.c	riscv: kexec: Fixup crash_smp_send_stop without multi cores	2022-11-29 21:50:59 -08:00
smpboot.c	riscv: topology: fix default topology reporting	2022-08-15 22:07:34 +01:00
soc.c	riscv: Fix builtin DTB handling	2021-01-07 19:00:50 -08:00
stacktrace.c	riscv: stacktrace: Make walk_stackframe cross pt_regs frame	2022-12-05 18:13:34 -08:00
suspend_entry.S	RISC-V: Split out the XIP fixups into their own file	2022-05-25 14:43:33 -07:00
suspend.c	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
sys_riscv.c	riscv: Allow PROT_WRITE-only mmap()	2022-09-22 09:44:59 -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_misaligned.c	riscv: traps_misaligned: do not duplicate stringify	2022-08-11 08:56:53 -07:00
traps.c	Merge patch series "RISC-V: Align the shadow stack"	2022-12-12 09:30:37 -08:00
vdso.c	vdso/timens: Refactor copy-pasted find_timens_vvar_page() helper into one copy	2022-12-01 11:35:40 +01:00
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