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Date: Thu, 4 Apr 2019 10:48:44 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Andrea Righi <righi.andrea@...il.com>,
Andy Lutomirski <luto@...nel.org>,
Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
Borislav Petkov <bp@...en8.de>,
"David S. Miller" <davem@...emloft.net>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Yonghong Song <yhs@...com>, Ingo Molnar <mingo@...nel.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 187/187] kprobes/x86: Blacklist non-attachable interrupt functions
4.19-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit a50480cb6d61d5c5fc13308479407b628b6bc1c5 ]
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@...il.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: David S. Miller <davem@...emloft.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Yonghong Song <yhs@...com>
Link: http://lkml.kernel.org/r/20181206095648.GA8249@Dell
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
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 f95dcb209fdf..617df50a11d9 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -627,6 +627,7 @@ ENTRY(interrupt_entry)
ret
END(interrupt_entry)
+_ASM_NOKPROBE(interrupt_entry)
/* Interrupt entry/exit. */
@@ -826,6 +827,7 @@ native_irq_return_ldt:
jmp native_irq_return_iret
#endif
END(common_interrupt)
+_ASM_NOKPROBE(common_interrupt)
/*
* APIC interrupts.
@@ -840,6 +842,7 @@ 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: */
@@ -984,6 +987,7 @@ ENTRY(\sym)
jmp error_exit
.endif
+_ASM_NOKPROBE(\sym)
END(\sym)
.endm
--
2.19.1
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