newfstatat(0xffffffffffffff9c, 0x0, &(0x7f0000002640)={0x0, 0x0, 0x0, 0x0, <r0=>0x0}, 0x1100)
setresuid(0x0, r0, 0x0)
r1 = add_key$keyring(&(0x7f0000000500), &(0x7f0000000540)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
r2 = add_key$user(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x2}, &(0x7f00000001c0)="91", 0x1, r1)
keyctl$chown(0x4, r2, 0x0, 0x0)