r0 = fork()
r1 = fork()
ptrace(0x10, r1)
ptrace$setsig(0x4203, r1, 0x1, &(0x7f0000000880)={0x1e, 0x4, 0x8})
ptrace(0x2, r1)
ptrace(0x10, r0)
ptrace$setsig(0x4203, r0, 0x0, &(0x7f0000000180)={0x19, 0x6, 0x1})
setpriority(0x2, r0, 0x0)
ioctl$TIOCSPGRP(0xffffffffffffffff, 0x5410, &(0x7f0000000140)=r0)
waitid$P_PIDFD(0x3, 0xffffffffffffffff, &(0x7f0000000200), 0x40000000, 0x0)
openat$procfs(0xffffffffffffff9c, &(0x7f0000000080)='/proc/keys\x00', 0x0, 0x0)