prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f0000000000))
msgctl$IPC_SET(0x0, 0x1, 0x0)
msgsnd(0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="e4"], 0x1008, 0x0)
msgrcv(0x0, &(0x7f0000001040)={0x0, ""/247}, 0xff, 0x0, 0x3000)