r0 = openat$sr(0xffffffffffffff9c, &(0x7f0000000000), 0x20901, 0x0)
pwritev2(r0, &(0x7f0000000080)=[{&(0x7f0000000100)=',', 0x1}], 0x1, 0x0, 0x0, 0x300)