Unverified Commit c9093486 authored Jun 21, 2019 by Anshuman Khandual Committed by Paul Burton Jul 03, 2019

mips/kprobes: Export kprobe_fault_handler()



Generic kprobe_page_fault() calls into kprobe_fault_handler() which must be
available with and without CONFIG_KPROBES. There is one stub implementation
for !CONFIG_KPROBES. For CONFIG_KPROBES all subscribing archs must provide
a kprobe_fault_handler() definition. Currently mips has an implementation
which is defined as 'static inline'. Make it available for generic kprobes
to comply with the above new requirement.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-mm@kvack.org

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 773734b44557 ("mm, kprobes: generalize and rename notify_page_fault() as kprobe_page_fault()")
Cc: linux-kernel@vger.kernel.org

parent a4e5914a

arch/mips/include/asm/kprobes.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -53,6 +53,7 @@ do { \
		#define kretprobe_blacklist_size 0

		void arch_remove_kprobe(struct kprobe *p);
		int kprobe_fault_handler(struct pt_regs *regs, int trapnr);

		/* Architecture specific copy of original instruction*/
		struct arch_specific_insn {

arch/mips/kernel/kprobes.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -410,7 +410,7 @@ out:
		return 1;
		}

		static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
		int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
		{
		struct kprobe *cur = kprobe_running();
		struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();

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