Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Mon, 17 Dec 2018 10:19:30 -0800 | From | tip-bot for Masami Hiramatsu <> | Subject | [tip:perf/core] kprobes/x86: Show x86-64 specific blacklisted symbols correctly |
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Commit-ID: fe6e65615415987629a2dda583b4495677d8c388 Gitweb: https://git.kernel.org/tip/fe6e65615415987629a2dda583b4495677d8c388 Author: Masami Hiramatsu <mhiramat@kernel.org> AuthorDate: Mon, 17 Dec 2018 17:21:24 +0900 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 17 Dec 2018 17:48:39 +0100
kprobes/x86: Show x86-64 specific blacklisted symbols correctly
Show x86-64 specific blacklisted symbols in debugfs.
Since x86-64 prohibits probing on symbols which are in entry text, those should be shown.
Tested-by: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> 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: 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/154503488425.26176.17136784384033608516.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/kprobes/core.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index c33b06f5faa4..6011a4a90f0a 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -1034,6 +1034,12 @@ bool arch_within_kprobe_blacklist(unsigned long addr) addr < (unsigned long)__entry_text_end); } +int __init arch_populate_kprobe_blacklist(void) +{ + return kprobe_add_area_blacklist((unsigned long)__entry_text_start, + (unsigned long)__entry_text_end); +} + int __init arch_init_kprobes(void) { return 0;
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