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authorAndrea Righi <righi.andrea@gmail.com>2018-12-06 10:56:48 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-05 22:33:17 +0200
commitd5813e77363cf550d23472aab64b3c9345de5d5c (patch)
tree0e042da6b84d02c58374d8e14238c17b02ad35cf
parente7d26616c92bd96364b45c532b39e455523abb5f (diff)
kprobes/x86: Blacklist non-attachable interrupt functions
[ 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>
-rw-r--r--arch/x86/entry/entry_64.S4
1 files changed, 4 insertions, 0 deletions
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