Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 05/24] kprobes/x86-64: Fix to move common_interrupt to .kprobes.text | Date | Tue, 22 Sep 2009 21:38:03 +0200 |
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From: Masami Hiramatsu <mhiramat@redhat.com>
Since nmi, debug and int3 returns to irq_return inside common_interrupt, probing this function will cause int3-loop, so it should be marked as __kprobes.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20090827172325.8246.40000.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> --- arch/x86/kernel/entry_64.S | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index c251be7..36e2ef5 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -809,6 +809,10 @@ END(interrupt) call \func .endm +/* + * Interrupt entry/exit should be protected against kprobes + */ + .pushsection .kprobes.text, "ax" /* * The interrupt stubs push (~vector+0x80) onto the stack and * then jump to common_interrupt. @@ -947,6 +951,10 @@ ENTRY(retint_kernel) CFI_ENDPROC END(common_interrupt) +/* + * End of kprobes section + */ + .popsection /* * APIC interrupts. -- 1.6.2.3
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