| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 187/187] kprobes/x86: Blacklist non-attachable interrupt functions | Date | Thu, 4 Apr 2019 10:48:44 +0200 |
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4.19-stable review patch. If anyone has any objections, please let me know.
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[ 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@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yonghong Song <yhs@fb.com> Link: http://lkml.kernel.org/r/20181206095648.GA8249@Dell Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.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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