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Subject[PATCH v2 2/3] arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler
Date
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Since arm64's do_page_fault() can handle the page fault correctly
than kprobe_fault_handler() according to the context, let it handle
the page fault instead of simply call fixup_exception() in the
kprobe_fault_handler().

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
---
arch/arm64/kernel/probes/kprobes.c | 8 --------
1 file changed, 8 deletions(-)

diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
index c9e4d0720285..d2ae37f89774 100644
--- a/arch/arm64/kernel/probes/kprobes.c
+++ b/arch/arm64/kernel/probes/kprobes.c
@@ -294,14 +294,6 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr)
}

break;
- case KPROBE_HIT_ACTIVE:
- case KPROBE_HIT_SSDONE:
- /*
- * In case the user-specified fault handler returned
- * zero, try to fix up.
- */
- if (fixup_exception(regs))
- return 1;
}
return 0;
}
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