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* [PATCH] kprobes: x86_64: blacklist non-attachable interrupt functions
@ 2018-12-06  9:56 Andrea Righi
  2018-12-06 16:39 ` [tip:perf/urgent] kprobes/x86: Blacklist " tip-bot for Andrea Righi
  2018-12-07 14:47 ` [PATCH] kprobes: x86_64: blacklist " Masami Hiramatsu
  0 siblings, 2 replies; 11+ messages in thread
From: Andrea Righi @ 2018-12-06  9:56 UTC (permalink / raw)
  To: Naveen N. Rao, Anil S Keshavamurthy, David S. Miller, Masami Hiramatsu
  Cc: Yonghong Song, Andy Lutomirski, Thomas Gleixner, Ingo Molnar,
	Borislav Petkov, H. Peter Anvin, x86, linux-kernel

These interrupt functions are already non-attachable by kprobes.
Blacklist them explicitly so that they can show up in
/sys/kernel/debug/kprobes/blacklist and tools like BCC can use this
additional information.

Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
---
 arch/x86/entry/entry_64.S | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index ce25d84023c0..1f0efdb7b629 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -566,6 +566,7 @@ ENTRY(interrupt_entry)
 
 	ret
 END(interrupt_entry)
+_ASM_NOKPROBE(interrupt_entry)
 
 
 /* Interrupt entry/exit. */
@@ -766,6 +767,7 @@ native_irq_return_ldt:
 	jmp	native_irq_return_iret
 #endif
 END(common_interrupt)
+_ASM_NOKPROBE(common_interrupt)
 
 /*
  * APIC interrupts.
@@ -780,6 +782,7 @@ ENTRY(\sym)
 	call	\do_sym	/* rdi points to pt_regs */
 	jmp	ret_from_intr
 END(\sym)
+_ASM_NOKPROBE(\sym)
 .endm
 
 /* Make sure APIC interrupt handlers end up in the irqentry section: */
@@ -960,6 +963,7 @@ ENTRY(\sym)
 
 	jmp	error_exit
 	.endif
+_ASM_NOKPROBE(\sym)
 END(\sym)
 .endm
 
-- 
2.17.1

^ permalink raw reply	[flat|nested] 11+ messages in thread

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Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
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2018-12-06  9:56 [PATCH] kprobes: x86_64: blacklist non-attachable interrupt functions Andrea Righi
2018-12-06 16:39 ` [tip:perf/urgent] kprobes/x86: Blacklist " tip-bot for Andrea Righi
2018-12-07 14:47 ` [PATCH] kprobes: x86_64: blacklist " Masami Hiramatsu
2018-12-07 16:01   ` Masami Hiramatsu
2018-12-07 17:00     ` Andrea Righi
2018-12-08  3:42       ` Masami Hiramatsu
2018-12-08  7:07         ` Andrea Righi
2018-12-07 17:58     ` Andrea Righi
2018-12-08  3:48       ` Masami Hiramatsu
2018-12-08  7:09         ` Andrea Righi
2018-12-16 16:07           ` Masami Hiramatsu

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