pipe2(&(0x7f0000000000)={<r0=>0x0, <r1=>0x0}, 0x0)
writev(r1, &(0x7f00000001c0)=[{&(0x7f0000000040)="b1", 0x1}], 0x1)
fcntl$setpipe(r1, 0x407, 0x0)
vmsplice(r1, &(0x7f00000003c0)=[{&(0x7f0000000300)='\b', 0x1}], 0x100000000000000f, 0x0)
vmsplice(r0, &(0x7f0000000340)=[{&(0x7f0000000200)='u', 0x1}], 0x1, 0x0)