r0 = syz_open_dev$tty1(0xc, 0x4, 0x1)
r1 = syz_open_dev$tty1(0xc, 0x4, 0x4)
ioctl$TIOCSLCKTRMIOS(r1, 0x5457, &(0x7f0000000040))
writev(r0, &(0x7f00000000c0)=[{&(0x7f0000000000)="a20e73f1b1812c8df69b4b", 0xb}], 0x1)
r2 = fork()
ptrace(0x4208, r2)
ptrace$setregs(0xe, r2, 0x0, &(0x7f00000009c0))
ioctl$TIOCGPGRP(r0, 0x540f, &(0x7f0000000080)=<r3=>0x0)
syz_open_procfs(r3, &(0x7f0000000100)='net/dev_mcast\x00')
r4 = fork()
ptrace(0x10, r4)
ptrace$setregs(0xe, r4, 0x0, &(0x7f00000009c0))
ptrace$cont(0x18, r4, 0x5, 0x1)
r5 = fork()
ptrace(0x10, r5)
ptrace$setregs(0x6, r5, 0x5000000000000, &(0x7f0000000140)="da8dd65f4cdbdf383bc5692a72fe73f674a30829f4")