Hi Jovi, (2013/12/19 18:37), Jovi Zhangwei wrote: > Hi Masami, > > On Thu, Dec 19, 2013 at 5:04 PM, Masami Hiramatsu > <masami.hiramatsu.pt@xxxxxxxxxxx> wrote: >> memcpy/memset functions are fundamental functions and >> those are involved in kprobe's exception handling. >> Prohibit probing on them to avoid kernel crash. >> > Would you please let me know the LKML link of that bugfix, I cannot > find it in my LKML fold. Yeah, that was found in my testing environment. > No objection on this patch. :) just want to know more, It seems there > have no problem to probe memcpy in my box, maybe I didn't hit the > crash code path. Ah, I see. Originally the problem happened when I put a probe on __memcpy. And it looks the instances of memcpy and __memcpy are same on x86-64. Thus I decided to blacklist both. (memset/__memset too) Have you ever tried to probe __memcpy on your box? Thank you, -- Masami HIRAMATSU IT Management Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@xxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
