mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy

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commit 6ac1dc736b 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: b920de1b77 ("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: Ben Hutchings <ben@decadent.org.uk>

...

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Eric W. Biederman 2017-08-01 05:02:38 -05:00 • committed by Ben Hutchings

parent 0d519b4a46

commit 085f09ec53

1 changed files with 1 additions and 1 deletions

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arch/mn10300/mm/misalignment.c

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