lib/vsprintf: Require exact hash_pointers mode matches

hash_pointers= accepts a small set of mode strings, but the parser uses
strncmp() with the length of each valid mode.  That accepts values with
trailing garbage, such as hash_pointers=autobots or
hash_pointers=nevermind, as valid aliases for auto and never.

Use strcmp() so that only the documented mode strings are accepted.
Invalid values will continue to fall back to auto through the existing
unknown-mode path.

Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20260519130117.48097-1-kaitao.cheng@linux.dev
Signed-off-by: Petr Mladek <pmladek@suse.com>

0 files changed, 0 insertions, 0 deletions