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f3fbd7ec62
linux/arch/arm/probes/kprobes
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Masami Hiramatsu f3fbd7ec62 arm: kprobes: Allow to handle reentered kprobe on single-stepping 
This is arm port of commit 6a5022a56a ("kprobes/x86: Allow to
handle reentered kprobe on single-stepping")

Since the FIQ handlers can interrupt in the single stepping
(or preparing the single stepping, do_debug etc.), we should
consider a kprobe is hit in the NMI handler. Even in that
case, the kprobe is allowed to be reentered as same as the
kprobes hit in kprobe handlers
(KPROBE_HIT_ACTIVE or KPROBE_HIT_SSDONE).

The real issue will happen when a kprobe hit while another
reentered kprobe is processing (KPROBE_REENTER), because
we already consumed a saved-area for the previous kprobe.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
2017-03-21 16:24:18 +00:00
..
actions-arm.c ARM: kprobes: check register usage for probed instruction. 2015-01-13 16:10:48 +00:00
actions-common.c
actions-thumb.c ARM: kprobes: collects stack consumption for store instructions 2015-01-13 16:10:06 +00:00
checkers-arm.c ARM: kprobes: check register usage for probed instruction. 2015-01-13 16:10:48 +00:00
checkers-common.c ARM: kprobes: collects stack consumption for store instructions 2015-01-13 16:10:06 +00:00
checkers-thumb.c ARM: kprobes: collects stack consumption for store instructions 2015-01-13 16:10:06 +00:00
checkers.h ARM: kprobes: check register usage for probed instruction. 2015-01-13 16:10:48 +00:00
core.c arm: kprobes: Allow to handle reentered kprobe on single-stepping 2017-03-21 16:24:18 +00:00
core.h ARM: kprobes: Fix compilation error caused by superfluous '*' 2015-02-10 15:05:30 +08:00
Makefile ARM: kprobes: enable OPTPROBES for ARM 32 2015-01-13 16:10:17 +00:00
opt-arm.c ARM: optprobes: execute instruction during restoring if possible. 2015-01-14 12:24:52 +00:00
test-arm.c ARM: kprobes: Eliminate test code's use of BX instruction on ARMv4 CPUs 2015-01-20 09:06:04 +00:00
test-core.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
test-core.h ARM: kprobes: Fix unreliable MRS instruction tests 2015-01-13 16:10:17 +00:00
test-thumb.c ARM: kprobes: Fix unreliable MRS instruction tests 2015-01-13 16:10:17 +00:00