https://github.com/torvalds/linux
Revision c86a32c09f8ced67971a2310e3b0dda4d1749007 authored by Masami Hiramatsu on 18 January 2018, 16:15:20 UTC, committed by Thomas Gleixner on 19 January 2018, 15:31:29 UTC
Since indirect jump instructions will be replaced by jump to __x86_indirect_thunk_*, those jmp instruction must be treated as an indirect jump. Since optprobe prohibits to optimize probes in the function which uses an indirect jump, it also needs to find out the function which jump to __x86_indirect_thunk_* and disable optimization. Add a check that the jump target address is between the __indirect_thunk_start/end when optimizing kprobe. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <dwmw@amazon.co.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/151629212062.10241.6991266100233002273.stgit@devbox
1 parent c1804a2
Tip revision: c86a32c09f8ced67971a2310e3b0dda4d1749007 authored by Masami Hiramatsu on 18 January 2018, 16:15:20 UTC
kprobes/x86: Disable optimizing on the function jumps to indirect thunk
kprobes/x86: Disable optimizing on the function jumps to indirect thunk
Tip revision: c86a32c
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Kconfig | -rw-r--r-- | 3.4 KB |
Makefile | -rw-r--r-- | 5.1 KB |
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