3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mateusz Guzik <mguzik@xxxxxxxxxx> 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 <mguzik@xxxxxxxxxx> Reported-by: Gabriellla Schmidt <gsc@xxxxxxxxx> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Cc: Davidlohr Bueso <davidlohr@xxxxxx> Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Masanari Iida <standby24x7@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html