[PATCH 0/3] arm64: kprobes: Fix blacklist checking on arm64
From: Masami Hiramatsu
Date: Mon Dec 17 2018 - 01:40:46 EST
Here is a short series about fixing kprobe blacklist checking on
I found that some blacklist checking code were mis-placed in
arch_prepare_kprobe() and arch_within_kprobe_blacklist().
Some sub-function (instruction-level) accept/decline check
should be done in arch_prepare_kprobe() and that should not
be in the blacklist. Also, all function (symbol) level check
must be done by blacklist.
For arm64, it checks the extable entry address in blacklist
and exception/irqentry function in arch_prepare_kprobe().
Moreover, RODATA check is unneeded since kernel/kprobes.c
already ensures the probe address is in kernel-text area.
Masami Hiramatsu (3):
arm64: kprobes: Move extable address check into arch_prepare_kprobe()
arm64: kprobes: Remove unneeded RODATA check
arm64: kprobes: Move exception_text check in blacklist
arch/arm64/kernel/probes/kprobes.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)