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    SubjectRe: problem with kmemleak
    From
    help~~~:) please !thx!!

    On Thu, May 12, 2011 at 10:06 AM, ttlxzz ccc <boyzccc@gmail.com> wrote:
    > Hi, all:
    >
    >
    >
    > I just want to use kmemleak, so I make the CONFIG_DEBUG_KMEMLEAK and
    > CONFIG_DEBUG_FS on, mount the debugfs.
    >
    > But when I insmod mm/kmemleak-test.ko, echo scan >
    > /sys/kernel/debug/kmemleak and cat /sys/kernel/debug/kmemleak. I just
    > see this:
    >
    > unreferenced object 0xffffc90012d21000 (size 64):
    >
    >  comm "insmod", pid 13092, jiffies 4298369684
    >
    >  hex dump (first 32 bytes):
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >  backtrace:
    >
    >    [<ffffffffffffffff>] 0xffffffffffffffff
    >
    > unreferenced object 0xffffc90012d24000 (size 64):
    >
    >  comm "insmod", pid 13092, jiffies 4298369684
    >
    >  hex dump (first 32 bytes):
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >  backtrace:
    >
    >    [<ffffffffffffffff>] 0xffffffffffffffff
    >
    > unreferenced object 0xffffc90012d27000 (size 64):
    >
    >  comm "insmod", pid 13092, jiffies 4298369684
    >
    >  hex dump (first 32 bytes):
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    >
    >  backtrace:
    >
    >    [<ffffffffffffffff>] 0xffffffffffffffff
    >
    > There is no other backtrace except [<ffffffffffffffff>]
    > 0xffffffffffffffff. Then I read the mm/kmemleak.c. In
    > kmemleak_seq_show(), I find that the object->trace_len is 1.
    >
    >
    >
    > How can I get the full backtrace?
    >
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