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    Subject[PATCH v2 2/3] coredump: use task comm instead of (unknown)
    Date
    If we don't know the file corresponding to the binary (i.e. exe_file
    is unknown), use "task->comm (path unknown)" instead of simple
    "(unknown)" as suggested by ak.

    The fallback is the same as %e except it will append "(path unknown)".

    Signed-off-by: Jiri Slaby <jslaby@suse.cz>
    Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: Andi Kleen <andi@firstfloor.org>
    Cc: Oleg Nesterov <oleg@redhat.com>
    ---
    fs/exec.c | 7 +++++--
    1 files changed, 5 insertions(+), 2 deletions(-)

    diff --git a/fs/exec.c b/fs/exec.c
    index 155c6d4..8900f61 100644
    --- a/fs/exec.c
    +++ b/fs/exec.c
    @@ -1554,8 +1554,11 @@ static int cn_print_exe_file(struct core_name *cn)
    int ret;

    exe_file = get_mm_exe_file(current->mm);
    - if (!exe_file)
    - return cn_printf(cn, "(unknown)");
    + if (!exe_file) {
    + char comm[TASK_COMM_LEN];
    + return cn_printf(cn, "%s (path unknown)", get_task_comm(comm,
    + current));
    + }

    pathbuf = kmalloc(PATH_MAX, GFP_TEMPORARY);
    if (!pathbuf) {
    --
    1.7.4.2


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