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authorJordan Niethe <jniethe5@gmail.com>2020-05-06 06:40:32 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2020-05-18 17:10:37 +0300
commitf8faaffaa7d99028e457ef2d1dcb43a98f736938 (patch)
tree0e987e7b6862e3412816dec98b222f036931cdc8 /arch/powerpc/kernel/uprobes.c
parent94afd069d937d84fb4f696eb9a78db4084e43d21 (diff)
downloadlinux-f8faaffaa7d99028e457ef2d1dcb43a98f736938.tar.xz
powerpc: Use a function for reading instructions
Prefixed instructions will mean there are instructions of different length. As a result dereferencing a pointer to an instruction will not necessarily give the desired result. Introduce a function for reading instructions from memory into the instruction data type. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Alistair Popple <alistair@popple.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-13-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/uprobes.c')
-rw-r--r--arch/powerpc/kernel/uprobes.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/uprobes.c b/arch/powerpc/kernel/uprobes.c
index 31c870287f2b..6893d40a48c5 100644
--- a/arch/powerpc/kernel/uprobes.c
+++ b/arch/powerpc/kernel/uprobes.c
@@ -174,7 +174,7 @@ bool arch_uprobe_skip_sstep(struct arch_uprobe *auprobe, struct pt_regs *regs)
* emulate_step() returns 1 if the insn was successfully emulated.
* For all other cases, we need to single-step in hardware.
*/
- ret = emulate_step(regs, auprobe->insn);
+ ret = emulate_step(regs, ppc_inst_read(&auprobe->insn));
if (ret > 0)
return true;