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    SubjectRe: [PATCH 1/1] coredump: use task comm instead of (unknown)
    (Cc John)

    On Fri, 6 May 2011 21:26:39 +0900
    Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> wrote:

    > Andrew Morton wrote:
    > > Direct access to current->comm is racy since we added
    > > prctl(PR_SET_NAME).
    >
    > A passer-by's question. Did we change below one
    >
    > char *get_task_comm(char *buf, struct task_struct *tsk)
    > {
    > /* buf must be at least sizeof(tsk->comm) in size */
    > task_lock(tsk);
    > strncpy(buf, tsk->comm, sizeof(tsk->comm));
    > task_unlock(tsk);
    > return buf;
    > }
    >
    > since some archs may do like
    >
    > char *strncpy(char *dest, const char *src, size_t n)
    > {
    > size_t len = __strnend(src, n) - src;
    > __builtin_memset(dest + len, 0, n - len);
    > __builtin_memcpy(dest, src, len);
    > return dest;
    > }
    >
    > ( arch/s390/lib/string.c ) after adding prctl(PR_SET_NAME)?

    I don't understand what you're asking, sorry.


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