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arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler 

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>
Link: https://lore.kernel.org/r/166994752269.439920.4801339965959400456.stgit@devnote3
Signed-off-by: Will Deacon <will@kernel.org>
pull/520/merge
Masami Hiramatsu (Google) 2022-12-02 11:18:42 +09:00 committed by Will Deacon
parent 0fbcd8abf3
commit 30a4215523
1 changed files with 0 additions and 8 deletions
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8
arch/arm64/kernel/probes/kprobes.c
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@ -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;
}