On Sun, Jan 17, 2021 at 12:52:28PM +0800, menglong8.dong@gmail.com wrote:
From: Menglong Dong dong.menglong@zte.com.cn
'format_corename()' will splite 'core_pattern' on spaces when it is in pipe mode, and take helper_argv[0] as the path to usermode executable. It works fine in most cases.
However, if there is a space between '|' and '/file/path', such as '| /usr/lib/systemd/systemd-coredump %P %u %g', then helper_argv[0] will be parsed as '', and users will get a 'Core dump to | disabled'.
It is not friendly to users, as the pattern above was valid previously. Fix this by ignoring the spaces between '|' and '/file/path'.
Fixes: 315c69261dd3 ("coredump: split pipe command whitespace before expanding template") Signed-off-by: Menglong Dong dong.menglong@zte.com.cn Signed-off-by: Andrew Morton akpm@linux-foundation.org Cc: Paul Wise pabs3@bonedaddy.net Cc: Jakub Wilk jwilk@jwilk.net [https://bugs.debian.org/924398] Cc: Neil Horman nhorman@tuxdriver.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/5fb62870.1c69fb81.8ef5d.af76@mx.google.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org
fs/coredump.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
What is the git commit id of this, and what stable trees do you want it merged to?