coredump: use task comm instead of (unknown)

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 <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/fs/exec.c b/fs/exec.c
index 842d5700c15595df6de6508a91a1927fdb462304..a682624de5726bf5921c9dcfe48dbfbf546a2f16 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1657,7 +1657,7 @@ static int cn_print_exe_file(struct core_name *cn)
 
        exe_file = get_mm_exe_file(current->mm);
        if (!exe_file)
-               return cn_printf(cn, "(unknown)");
+               return cn_printf(cn, "%s (path unknown)", current->comm);
 
        pathbuf = kmalloc(PATH_MAX, GFP_TEMPORARY);
        if (!pathbuf) {