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| author |   Jordan Niethe <jniethe5@gmail.com> | 2020-05-06 13:40:32 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:10:37 +1000 |
| commit | f8faaffaa7d99028e457ef2d1dcb43a98f736938 (patch) | |
| tree | 0e987e7b6862e3412816dec98b222f036931cdc8 /arch/powerpc/kernel/uprobes.c | |
| parent | powerpc: Use a datatype for instructions (diff) | |
| download | linux-dev-f8faaffaa7d99028e457ef2d1dcb43a98f736938.tar.xz linux-dev-f8faaffaa7d99028e457ef2d1dcb43a98f736938.zip | |
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.c | 2 |
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; |