r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x882c2, 0x0)
fallocate(r0, 0x0, 0x0, 0x1000002)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x100000f, 0x1e013, r0, 0x0)
socketpair(0x0, 0x802, 0xb5, &(0x7f0000000180))
read(r0, &(0x7f0000000040)=""/238, 0xffffffff000)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000002480), 0x40002, 0x0)
pwritev(r1, &(0x7f0000001080)=[{&(0x7f0000000000)="b5", 0x1}], 0x1, 0x10001, 0x0)
ioctl$TUNGETDEVNETNS(r0, 0x54e3, 0x0)
syz_open_procfs$userns(0x0, &(0x7f0000000280))