3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mateusz Guzik <mgu...@redhat.com>
commit e7ca2552369c1dfe0216c626baf82c3d83ec36bb upstream.
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>
Cc: Davidlohr Bueso <davidl...@hp.com>
Cc: Manfred Spraul <manf...@colorfullife.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Cc: Masanari Iida <standby2...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
ipc/compat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -381,7 +381,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, i
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:
--
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/
