diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2017-08-01 05:02:38 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-16 20:09:47 +0100 |
| commit | 2dab22193943230c4ff63fd9496b2ed5c044e519 (patch) | |
| tree | cdb0fc7366d3c36b59b0195e85980ff346cf7f62 /kernel/trace/ftrace.c | |
| parent | 3b0104f9e21a49cd03b91c7794b3e3e6cc0bc277 (diff) | |
mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy
commit 6ac1dc736b323011a55ecd1fc5897c24c4f77cbd upstream.
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.
Fixes: b920de1b77b7 ("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: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
0 files changed, 0 insertions, 0 deletions