• Eric W. Biederman's avatar
    mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy · 6ac1dc73
    Eric W. Biederman authored
    Setting si_code to 0 is the same a setting si_code to SI_USER which is definitely
    not correct.  With si_code set to SI_USER si_pid and si_uid will be copied to
    userspace instead of si_addr.  Which is very wrong.
    So fix this by using a sensible si_code (SEGV_MAPERR) for this failure.
    Cc: stable@vger.kernel.org
    Fixes: b920de1b ("mn10300: add the MN10300/AM33 architecture to the kernel")
    Cc: David Howells <dhowells@redhat.com>
    Cc: Masakazu Urade <urade.masakazu@jp.panasonic.com>
    Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
    Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
misalignment.c 29.3 KB