Compat function takes msgtyp argument as u32 and passes it down to
do_msgrcv which results in casting to long, thus the sign is lost
and we get a big positive number instead.
Cast the argument to signed type before passing it down.
Signed-off-by: Mateusz Guzik <mgu...@redhat.com>
Reported-by: Gabriellla Schmidt <g...@bruker.de>
Cc: Al Viro <v...@zeniv.linux.org.uk>
---
ipc/compat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ipc/compat.c b/ipc/compat.c
index 892f658..d3b3760 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -381,7 +381,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int,
second,
uptr = compat_ptr(ipck.msgp);
fifth = ipck.msgtyp;
}
- return do_msgrcv(first, uptr, second, fifth, third,
+ return do_msgrcv(first, uptr, second, (s32)fifth, third,
compat_do_msg_fill);
}
case MSGGET:
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
