coredump: kill cn_escape(), introduce cn_esc_printf()

The usage of cn_escape() looks really annoying, imho this sequence needs a
wrapper.  And it is buggy.  If cn_printf() does expand_corename()
cn_escape() writes to the freed memory.

Introduce cn_esc_printf() which hopefully does this all right.  It records
the index before cn_vprintf(), not "char *" which is no longer valid (in
general) after krealloc().

Signed-off-by: Oleg Nesterov <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Colin Walters <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Lennart Poettering <[email protected]>
Cc: Lucas De Marchi <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions